Merge tag 'drm-misc-next-2024-09-20' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for v6.12:

UAPI Changes:
- Add panthor/DEV_QUERY_TIMESTAMP_INFO query.

Cross-subsystem Changes:
- Updated dt bindings.
- Add documentation explaining default errnos for fences.
- Mark dma-buf heaps creation functions as __init.

Core Changes:
- Split DSC helpers from DP helpers.
- Clang build fixes for drm/mm test.
- Remove simple pipeline support for gem-vram,
no longer any users left after converting bochs.
- Add erno to drm_sched_start to distinguish between GPU and queue
reset.
- Add drm_framebuffer testcases.
- Fix uninitialized spinlock acquisition with CONFIG_DRM_PANIC=n.
- Use read_trylock instead of read_lock in dma_fence_begin_signalling to
quiesce lockdep.

Driver Changes:
- Assorted small fixes and updates for tegra, host1x, imagination,
nouveau, panfrost, panthor, panel/ili9341, mali, exynos,
panel/samsung-s6e3fa7, ast, bridge/ti-sn65dsi86, panel/himax-hx83112a,
bridge/tc358767, bridge/imx8mp-hdmi-tx, panel/khadas-ts050,
panel/nt36523, panel/sony-acx565akm, kmb, accel/qaic, omap, v3d.
- Add bridge/TI TDP158.
- Assorted documentation updates.
- Convert bochs from simple drm to gem shmem, and check modes
against available memory.
- Many VC4 fixes, most related to scaling and YUV support.
- Convert some drivers to use SYSTEM_SLEEP_PM_OPS and RUNTIME_PM_OPS.
- Rockchip 4k@60 support.

Signed-off-by: Dave Airlie <[e-mail]>
From: Maarten Lankhorst <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

Documentation/devicetree/bindings/display/bridge/ti,tdp158.yaml

···
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/ti,tdp158.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI TDP158 HDMI to TMDS Redriver
+
+maintainers:
+  - Arnaud Vrac <[e-mail]>
+  - Pierre-Hugues Husson <[e-mail]>
+
+properties:
+  compatible:
+    const: ti,tdp158
+
+# The reg property is required if and only if the device is connected
+# to an I2C bus. In pin strap mode, reg must not be specified.
+  reg:
+    description: I2C address of the device
+
+# Pin 36 = Operation Enable / Reset Pin
+# OE = L: Power Down Mode
+# OE = H: Normal Operation
+# Internal weak pullup - device resets on H to L transitions
+  enable-gpios:
+    description: GPIO controlling bridge enable
+
+  vcc-supply:
+    description: Power supply 3.3V
+
+  vdd-supply:
+    description: Power supply 1.1V
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Bridge input
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Bridge output
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - vcc-supply
+  - vdd-supply
+  - ports
+
+additionalProperties: false

Documentation/devicetree/bindings/display/imx/fsl-imx-drm.txt

···
 - interface-pix-fmt: How this display is connected to the
   display interface. Currently supported types: "rgb24", "rgb565", "bgr666"
   and "lvds666".
-- edid: verbatim EDID data block describing attached display.
 - ddc: phandle describing the i2c bus handling the display data
   channel
 - port@[0-1]: Port nodes with endpoint definitions as defined in
···
 
 disp0 {
 	compatible = "fsl,imx-parallel-display";
-	edid = [edid-data];
 	interface-pix-fmt = "rgb24";
 
 	port@0 {

Documentation/devicetree/bindings/display/imx/ldb.txt

···
    display-timings are used instead.
 
 Optional properties (required if display-timings are used):
- - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
  - display-timings : A node that describes the display timings as defined in
    Documentation/devicetree/bindings/display/panel/display-timing.txt.
  - fsl,data-mapping : should be "spwg" or "jeida"

Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml

···
               - renesas,r9a07g054-mali
               - rockchip,px30-mali
               - rockchip,rk3568-mali
+              - rockchip,rk3576-mali
           - const: arm,mali-bifrost # Mali Bifrost GPU model/revision is fully discoverable
       - items:
           - enum:

Documentation/gpu/drm-uapi.rst

···
 ------------------
 
 The KMD is responsible for checking if the device needs a reset, and to perform
-it as needed. Usually a hang is detected when a job gets stuck executing. KMD
-should keep track of resets, because userspace can query any time about the
-reset status for a specific context. This is needed to propagate to the rest of
-the stack that a reset has happened. Currently, this is implemented by each
-driver separately, with no common DRM interface. Ideally this should be properly
-integrated at DRM scheduler to provide a common ground for all drivers. After a
-reset, KMD should reject new command submissions for affected contexts.
+it as needed. Usually a hang is detected when a job gets stuck executing.
+
+Propagation of errors to userspace has proven to be tricky since it goes in
+the opposite direction of the usual flow of commands. Because of this vendor
+independent error handling was added to the &dma_fence object, this way drivers
+can add an error code to their fences before signaling them. See function
+dma_fence_set_error() on how to do this and for examples of error codes to use.
+
+The DRM scheduler also allows setting error codes on all pending fences when
+hardware submissions are restarted after an reset. Error codes are also
+forwarded from the hardware fence to the scheduler fence to bubble up errors
+to the higher levels of the stack and eventually userspace.
+
+Fence errors can be queried by userspace through the generic SYNC_IOC_FILE_INFO
+IOCTL as well as through driver specific interfaces.
+
+Additional to setting fence errors drivers should also keep track of resets per
+context, the DRM scheduler provides the drm_sched_entity_error() function as
+helper for this use case. After a reset, KMD should reject new command
+submissions for affected contexts.
 
 User Mode Driver
 ----------------

Documentation/gpu/todo.rst

···
 
 Level: Advanced
 
+Querying errors from drm_syncobj
+================================
+
+The drm_syncobj container can be used by driver independent code to signal
+complection of submission.
+
+One minor feature still missing is a generic DRM IOCTL to query the error
+status of binary and timeline drm_syncobj.
+
+This should probably be improved by implementing the necessary kernel interface
+and adding support for that in the userspace stack.
+
+Contact: Christian König
+
+Level: Starter
+
 Outside DRM
 ===========
 

drivers/accel/qaic/qaic_debugfs.c

···
 	return 0;
 }
 
-static int bootlog_fops_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, bootlog_show, inode->i_private);
-}
+DEFINE_SHOW_ATTRIBUTE(bootlog);
 
-static const struct file_operations bootlog_fops = {
-	.owner = THIS_MODULE,
-	.open = bootlog_fops_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
-
-static int read_dbc_fifo_size(struct seq_file *s, void *unused)
+static int fifo_size_show(struct seq_file *s, void *unused)
 {
 	struct dma_bridge_chan *dbc = s->private;
 
···
 	return 0;
 }
 
-static int fifo_size_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, read_dbc_fifo_size, inode->i_private);
-}
+DEFINE_SHOW_ATTRIBUTE(fifo_size);
 
-static const struct file_operations fifo_size_fops = {
-	.owner = THIS_MODULE,
-	.open = fifo_size_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
-
-static int read_dbc_queued(struct seq_file *s, void *unused)
+static int queued_show(struct seq_file *s, void *unused)
 {
 	struct dma_bridge_chan *dbc = s->private;
 	u32 tail = 0, head = 0;
···
 	return 0;
 }
 
-static int queued_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, read_dbc_queued, inode->i_private);
-}
-
-static const struct file_operations queued_fops = {
-	.owner = THIS_MODULE,
-	.open = queued_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(queued);
 
 void qaic_debugfs_init(struct qaic_drm_device *qddev)
 {

drivers/dma-buf/dma-fence.c

···
 	if (in_atomic())
 		return true;
 
-	/* ... and non-recursive readlock */
-	lock_acquire(&dma_fence_lockdep_map, 0, 0, 1, 1, NULL, _RET_IP_);
+	/* ... and non-recursive successful read_trylock */
+	lock_acquire(&dma_fence_lockdep_map, 0, 1, 1, 1, NULL, _RET_IP_);
 
 	return false;
 }
···
 	lock_map_acquire(&dma_fence_lockdep_map);
 	lock_map_release(&dma_fence_lockdep_map);
 	if (tmp)
-		lock_acquire(&dma_fence_lockdep_map, 0, 0, 1, 1, NULL, _THIS_IP_);
+		lock_acquire(&dma_fence_lockdep_map, 0, 1, 1, 1, NULL, _THIS_IP_);
 }
 #endif
 

drivers/dma-buf/heaps/cma_heap.c

···
 	.allocate = cma_heap_allocate,
 };
 
-static int __add_cma_heap(struct cma *cma, void *data)
+static int __init __add_cma_heap(struct cma *cma, void *data)
 {
 	struct cma_heap *cma_heap;
 	struct dma_heap_export_info exp_info;
···
 	return 0;
 }
 
-static int add_default_cma_heap(void)
+static int __init add_default_cma_heap(void)
 {
 	struct cma *default_cma = dev_get_cma_area(NULL);
 	int ret = 0;

drivers/dma-buf/heaps/system_heap.c

···
 	.allocate = system_heap_allocate,
 };
 
-static int system_heap_create(void)
+static int __init system_heap_create(void)
 {
 	struct dma_heap_export_info exp_info;
 

drivers/gpu/drm/amd/amdgpu/Kconfig

···
 	depends on !UML
 	select FW_LOADER
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_DISPLAY_HELPER

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c

···
 			if (r)
 				goto out;
 		} else {
-			drm_sched_start(&ring->sched);
+			drm_sched_start(&ring->sched, 0);
 		}
 	}
 

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

···
 			if (!amdgpu_ring_sched_ready(ring))
 				continue;
 
-			drm_sched_start(&ring->sched);
+			drm_sched_start(&ring->sched, 0);
 		}
 
 		if (!drm_drv_uses_atomic_modeset(adev_to_drm(tmp_adev)) && !job_signaled)
···
 		if (!amdgpu_ring_sched_ready(ring))
 			continue;
 
-		drm_sched_start(&ring->sched);
+		drm_sched_start(&ring->sched, 0);
 	}
 
 	amdgpu_device_unset_mp1_state(adev);

drivers/gpu/drm/amd/amdgpu/amdgpu_job.c

···
 			atomic_inc(&ring->adev->gpu_reset_counter);
 			amdgpu_fence_driver_force_completion(ring);
 			if (amdgpu_ring_sched_ready(ring))
-				drm_sched_start(&ring->sched);
+				drm_sched_start(&ring->sched, 0);
 			goto exit;
 		}
 	}

drivers/gpu/drm/ast/ast_dp.c

···
 	return 0;
 }
 
-static bool ast_dp_power_is_on(struct ast_device *ast)
+static bool ast_dp_get_phy_sleep(struct ast_device *ast)
 {
-	u8 vgacre3;
+	u8 vgacre3 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xe3);
 
-	vgacre3 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xe3);
-
-	return !(vgacre3 & AST_DP_PHY_SLEEP);
+	return (vgacre3 & AST_IO_VGACRE3_DP_PHY_SLEEP);
 }
 
-static void ast_dp_power_on_off(struct drm_device *dev, bool on)
+static void ast_dp_set_phy_sleep(struct ast_device *ast, bool sleep)
 {
-	struct ast_device *ast = to_ast_device(dev);
-	// Read and Turn off DP PHY sleep
-	u8 bE3 = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xE3, AST_DP_VIDEO_ENABLE);
+	u8 vgacre3 = 0x00;
 
-	// Turn on DP PHY sleep
-	if (!on)
-		bE3 |= AST_DP_PHY_SLEEP;
+	if (sleep)
+		vgacre3 |= AST_IO_VGACRE3_DP_PHY_SLEEP;
 
-	// DP Power on/off
-	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xE3, (u8) ~AST_DP_PHY_SLEEP, bE3);
-
+	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xe3, (u8)~AST_IO_VGACRE3_DP_PHY_SLEEP,
+			       vgacre3);
 	msleep(50);
 }
 
···
 	drm_err(dev, "Link training failed\n");
 }
 
-static void ast_dp_set_on_off(struct drm_device *dev, bool on)
+static bool __ast_dp_wait_enable(struct ast_device *ast, bool enabled)
 {
-	struct ast_device *ast = to_ast_device(dev);
-	u8 video_on_off = on;
-	u32 i = 0;
+	u8 vgacrdf_test = 0x00;
+	u8 vgacrdf;
+	unsigned int i;
 
-	// Video On/Off
-	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xE3, (u8) ~AST_DP_VIDEO_ENABLE, on);
+	if (enabled)
+		vgacrdf_test |= AST_IO_VGACRDF_DP_VIDEO_ENABLE;
 
-	video_on_off <<= 4;
-	while (ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xDF,
-						ASTDP_MIRROR_VIDEO_ENABLE) != video_on_off) {
-		// wait 1 ms
-		mdelay(1);
-		if (++i > 200)
-			break;
+	for (i = 0; i < 200; ++i) {
+		if (i)
+			mdelay(1);
+		vgacrdf = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xdf,
+						 AST_IO_VGACRDF_DP_VIDEO_ENABLE);
+		if (vgacrdf == vgacrdf_test)
+			return true;
 	}
+
+	return false;
+}
+
+static void ast_dp_set_enable(struct ast_device *ast, bool enabled)
+{
+	struct drm_device *dev = &ast->base;
+	u8 vgacre3 = 0x00;
+
+	if (enabled)
+		vgacre3 |= AST_IO_VGACRE3_DP_VIDEO_ENABLE;
+
+	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xe3, (u8)~AST_IO_VGACRE3_DP_VIDEO_ENABLE,
+			       vgacre3);
+
+	drm_WARN_ON(dev, !__ast_dp_wait_enable(ast, enabled));
 }
 
 static void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode)
···
 static void ast_astdp_encoder_helper_atomic_enable(struct drm_encoder *encoder,
 						   struct drm_atomic_state *state)
 {
-	struct drm_device *dev = encoder->dev;
-	struct ast_device *ast = to_ast_device(dev);
+	struct ast_device *ast = to_ast_device(encoder->dev);
 	struct ast_connector *ast_connector = &ast->output.astdp.connector;
 
 	if (ast_connector->physical_status == connector_status_connected) {
-		ast_dp_power_on_off(dev, AST_DP_POWER_ON);
+		ast_dp_set_phy_sleep(ast, false);
 		ast_dp_link_training(ast);
 
 		ast_wait_for_vretrace(ast);
-		ast_dp_set_on_off(dev, 1);
+		ast_dp_set_enable(ast, true);
 	}
 }
 
 static void ast_astdp_encoder_helper_atomic_disable(struct drm_encoder *encoder,
 						    struct drm_atomic_state *state)
 {
-	struct drm_device *dev = encoder->dev;
+	struct ast_device *ast = to_ast_device(encoder->dev);
 
-	ast_dp_set_on_off(dev, 0);
-	ast_dp_power_on_off(dev, AST_DP_POWER_OFF);
+	ast_dp_set_enable(ast, false);
+	ast_dp_set_phy_sleep(ast, true);
 }
 
 static const struct drm_encoder_helper_funcs ast_astdp_encoder_helper_funcs = {
···
 						 bool force)
 {
 	struct ast_connector *ast_connector = to_ast_connector(connector);
-	struct drm_device *dev = connector->dev;
 	struct ast_device *ast = to_ast_device(connector->dev);
 	enum drm_connector_status status = connector_status_disconnected;
-	bool power_is_on;
+	bool phy_sleep;
 
 	mutex_lock(&ast->modeset_lock);
 
-	power_is_on = ast_dp_power_is_on(ast);
-	if (!power_is_on)
-		ast_dp_power_on_off(dev, true);
+	phy_sleep = ast_dp_get_phy_sleep(ast);
+	if (phy_sleep)
+		ast_dp_set_phy_sleep(ast, false);
 
 	if (ast_astdp_is_connected(ast))
 		status = connector_status_connected;
 
-	if (!power_is_on && status == connector_status_disconnected)
-		ast_dp_power_on_off(dev, false);
+	if (phy_sleep && status == connector_status_disconnected)
+		ast_dp_set_phy_sleep(ast, true);
 
 	mutex_unlock(&ast->modeset_lock);
 
···
 	.detect_ctx = ast_astdp_connector_helper_detect_ctx,
 };
 
+/*
+ * Output
+ */
+
 static const struct drm_connector_funcs ast_astdp_connector_funcs = {
 	.reset = drm_atomic_helper_connector_reset,
 	.fill_modes = drm_helper_probe_single_connector_modes,
···
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static int ast_astdp_connector_init(struct drm_device *dev, struct drm_connector *connector)
-{
-	int ret;
-
-	ret = drm_connector_init(dev, connector, &ast_astdp_connector_funcs,
-				 DRM_MODE_CONNECTOR_DisplayPort);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_astdp_connector_helper_funcs);
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
-
-	return 0;
-}
-
 int ast_astdp_output_init(struct ast_device *ast)
 {
 	struct drm_device *dev = &ast->base;
 	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.astdp.encoder;
-	struct ast_connector *ast_connector = &ast->output.astdp.connector;
-	struct drm_connector *connector = &ast_connector->base;
+	struct drm_encoder *encoder;
+	struct ast_connector *ast_connector;
+	struct drm_connector *connector;
 	int ret;
 
+	/* encoder */
+
+	encoder = &ast->output.astdp.encoder;
 	ret = drm_encoder_init(dev, encoder, &ast_astdp_encoder_funcs,
 			       DRM_MODE_ENCODER_TMDS, NULL);
 	if (ret)
···
 
 	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
-	ret = ast_astdp_connector_init(dev, connector);
+	/* connector */
+
+	ast_connector = &ast->output.astdp.connector;
+	connector = &ast_connector->base;
+	ret = drm_connector_init(dev, connector, &ast_astdp_connector_funcs,
+				 DRM_MODE_CONNECTOR_DisplayPort);
 	if (ret)
 		return ret;
+	drm_connector_helper_add(connector, &ast_astdp_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
 	ast_connector->physical_status = connector->status;
 
 	ret = drm_connector_attach_encoder(connector, encoder);

drivers/gpu/drm/ast/ast_dp501.c

···
 	ast->dp501_fw = NULL;
 }
 
-static int ast_load_dp501_microcode(struct drm_device *dev)
+static int ast_load_dp501_microcode(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
+	struct drm_device *dev = &ast->base;
 	int ret;
 
 	ret = request_firmware(&ast->dp501_fw, "ast_dp501_fw.bin", dev->dev);
···
 }
 #endif
 
-static bool ast_write_cmd(struct drm_device *dev, u8 data)
+static bool ast_write_cmd(struct ast_device *ast, u8 data)
 {
-	struct ast_device *ast = to_ast_device(dev);
 	int retry = 0;
+
 	if (wait_nack(ast)) {
 		send_nack(ast);
 		ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, data);
···
 	return false;
 }
 
-static bool ast_write_data(struct drm_device *dev, u8 data)
+static bool ast_write_data(struct ast_device *ast, u8 data)
 {
-	struct ast_device *ast = to_ast_device(dev);
-
 	if (wait_nack(ast)) {
 		send_nack(ast);
 		ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, data);
···
 }
 #endif
 
-static void ast_set_dp501_video_output(struct drm_device *dev, u8 mode)
+static void ast_set_dp501_video_output(struct ast_device *ast, u8 mode)
 {
-	ast_write_cmd(dev, 0x40);
-	ast_write_data(dev, mode);
+	ast_write_cmd(ast, 0x40);
+	ast_write_data(ast, mode);
 
 	msleep(10);
 }
···
 	return ast_mindwm(ast, 0x1e6e2104) & 0x7fffffff;
 }
 
-bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size)
+bool ast_backup_fw(struct ast_device *ast, u8 *addr, u32 size)
 {
-	struct ast_device *ast = to_ast_device(dev);
 	u32 i, data;
 	u32 boot_address;
 
···
 	return false;
 }
 
-static bool ast_launch_m68k(struct drm_device *dev)
+static bool ast_launch_m68k(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
 	u32 i, data, len = 0;
 	u32 boot_address;
 	u8 *fw_addr = NULL;
···
 			len = 32*1024;
 		} else {
 			if (!ast->dp501_fw &&
-			    ast_load_dp501_microcode(dev) < 0)
+			    ast_load_dp501_microcode(ast) < 0)
 				return false;
 
 			fw_addr = (u8 *)ast->dp501_fw->data;
···
 	return true;
 }
 
-static bool ast_init_dvo(struct drm_device *dev)
+static bool ast_init_dvo(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
 	u8 jreg;
 	u32 data;
 	ast_write32(ast, 0xf004, 0x1e6e0000);
···
 }
 
 
-static void ast_init_analog(struct drm_device *dev)
+static void ast_init_analog(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
 	u32 data;
 
 	/*
···
 	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xcf, 0x00);
 }
 
-void ast_init_3rdtx(struct drm_device *dev)
+void ast_init_3rdtx(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
-	u8 jreg;
+	u8 vgacrd1;
 
 	if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast)) {
-		jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, 0xff);
-		switch (jreg & 0x0e) {
-		case 0x04:
-			ast_init_dvo(dev);
+		vgacrd1 = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1,
+						 AST_IO_VGACRD1_TX_TYPE_MASK);
+		switch (vgacrd1) {
+		case AST_IO_VGACRD1_TX_SIL164_VBIOS:
+			ast_init_dvo(ast);
 			break;
-		case 0x08:
-			ast_launch_m68k(dev);
+		case AST_IO_VGACRD1_TX_DP501_VBIOS:
+			ast_launch_m68k(ast);
 			break;
-		case 0x0c:
-			ast_init_dvo(dev);
+		case AST_IO_VGACRD1_TX_FW_EMBEDDED_FW:
+			ast_init_dvo(ast);
 			break;
 		default:
-			if (ast->tx_chip_types & BIT(AST_TX_SIL164))
-				ast_init_dvo(dev);
+			if (ast->tx_chip == AST_TX_SIL164)
+				ast_init_dvo(ast);
 			else
-				ast_init_analog(dev);
+				ast_init_analog(ast);
 		}
 	}
 }
···
 static void ast_dp501_encoder_helper_atomic_enable(struct drm_encoder *encoder,
 						   struct drm_atomic_state *state)
 {
-	struct drm_device *dev = encoder->dev;
+	struct ast_device *ast = to_ast_device(encoder->dev);
 
-	ast_set_dp501_video_output(dev, 1);
+	ast_set_dp501_video_output(ast, 1);
 }
 
 static void ast_dp501_encoder_helper_atomic_disable(struct drm_encoder *encoder,
 						    struct drm_atomic_state *state)
 {
-	struct drm_device *dev = encoder->dev;
+	struct ast_device *ast = to_ast_device(encoder->dev);
 
-	ast_set_dp501_video_output(dev, 0);
+	ast_set_dp501_video_output(ast, 0);
 }
 
 static const struct drm_encoder_helper_funcs ast_dp501_encoder_helper_funcs = {
···
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static int ast_dp501_connector_init(struct drm_device *dev, struct drm_connector *connector)
-{
-	int ret;
-
-	ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs,
-				 DRM_MODE_CONNECTOR_DisplayPort);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs);
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
-
-	return 0;
-}
+/*
+ * Output
+ */
 
 int ast_dp501_output_init(struct ast_device *ast)
 {
 	struct drm_device *dev = &ast->base;
 	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.dp501.encoder;
-	struct ast_connector *ast_connector = &ast->output.dp501.connector;
-	struct drm_connector *connector = &ast_connector->base;
+	struct drm_encoder *encoder;
+	struct ast_connector *ast_connector;
+	struct drm_connector *connector;
 	int ret;
 
+	/* encoder */
+
+	encoder = &ast->output.dp501.encoder;
 	ret = drm_encoder_init(dev, encoder, &ast_dp501_encoder_funcs,
 			       DRM_MODE_ENCODER_TMDS, NULL);
 	if (ret)
···
 
 	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
-	ret = ast_dp501_connector_init(dev, connector);
+	/* connector */
+
+	ast_connector = &ast->output.dp501.connector;
+	connector = &ast_connector->base;
+	ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs,
+				 DRM_MODE_CONNECTOR_DisplayPort);
 	if (ret)
 		return ret;
+	drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
 	ast_connector->physical_status = connector->status;
 
 	ret = drm_connector_attach_encoder(connector, encoder);

drivers/gpu/drm/ast/ast_drv.c

···
 	ast_enable_vga(ast->ioregs);
 	ast_open_key(ast->ioregs);
 	ast_enable_mmio(dev->dev, ast->ioregs);
-	ast_post_gpu(dev);
+	ast_post_gpu(ast);
 
 	return drm_mode_config_helper_resume(dev);
 }

drivers/gpu/drm/ast/ast_drv.h

···
 	AST_TX_ASTDP,
 };
 
-#define AST_TX_NONE_BIT		BIT(AST_TX_NONE)
-#define AST_TX_SIL164_BIT	BIT(AST_TX_SIL164)
-#define AST_TX_DP501_BIT	BIT(AST_TX_DP501)
-#define AST_TX_ASTDP_BIT	BIT(AST_TX_ASTDP)
-
 enum ast_config_mode {
 	ast_use_p2a,
 	ast_use_dt,
···
 
 	struct mutex modeset_lock; /* Protects access to modeset I/O registers in ioregs */
 
+	enum ast_tx_chip tx_chip;
+
 	struct ast_plane primary_plane;
 	struct ast_plane cursor_plane;
 	struct drm_crtc crtc;
-	struct {
+	union {
 		struct {
 			struct drm_encoder encoder;
 			struct ast_connector connector;
···
 
 	bool support_wide_screen;
 
-	unsigned long tx_chip_types;		/* bitfield of enum ast_chip_type */
 	u8 *dp501_fw_addr;
 	const struct firmware *dp501_fw;	/* dp501 fw */
 };
···
 #define AST_DP501_LINKRATE	0xf014
 #define AST_DP501_EDID_DATA	0xf020
 
-#define AST_DP_POWER_ON			true
-#define AST_DP_POWER_OFF			false
-
 /*
  * ASTDP resoultion table:
  * EX:	ASTDP_A_B_C:
···
 int ast_mm_init(struct ast_device *ast);
 
 /* ast post */
-void ast_post_gpu(struct drm_device *dev);
+void ast_post_gpu(struct ast_device *ast);
 u32 ast_mindwm(struct ast_device *ast, u32 r);
 void ast_moutdwm(struct ast_device *ast, u32 r, u32 v);
 void ast_patch_ahb_2500(void __iomem *regs);
···
 int ast_sil164_output_init(struct ast_device *ast);
 
 /* ast dp501 */
-bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size);
-void ast_init_3rdtx(struct drm_device *dev);
+bool ast_backup_fw(struct ast_device *ast, u8 *addr, u32 size);
+void ast_init_3rdtx(struct ast_device *ast);
 int ast_dp501_output_init(struct ast_device *ast);
 
 /* aspeed DP */

drivers/gpu/drm/ast/ast_main.c

···
 
 static void ast_detect_tx_chip(struct ast_device *ast, bool need_post)
 {
+	static const char * const info_str[] = {
+		"analog VGA",
+		"Sil164 TMDS transmitter",
+		"DP501 DisplayPort transmitter",
+		"ASPEED DisplayPort transmitter",
+	};
+
 	struct drm_device *dev = &ast->base;
-	u8 jreg;
+	u8 jreg, vgacrd1;
+
+	/*
+	 * Several of the listed TX chips are not explicitly supported
+	 * by the ast driver. If these exist in real-world devices, they
+	 * are most likely reported as VGA or SIL164 outputs. We warn here
+	 * to get bug reports for these devices. If none come in for some
+	 * time, we can begin to fail device probing on these values.
+	 */
+	vgacrd1 = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, AST_IO_VGACRD1_TX_TYPE_MASK);
+	drm_WARN(dev, vgacrd1 == AST_IO_VGACRD1_TX_ITE66121_VBIOS,
+		 "ITE IT66121 detected, 0x%x, Gen%lu\n", vgacrd1, AST_GEN(ast));
+	drm_WARN(dev, vgacrd1 == AST_IO_VGACRD1_TX_CH7003_VBIOS,
+		 "Chrontel CH7003 detected, 0x%x, Gen%lu\n", vgacrd1, AST_GEN(ast));
+	drm_WARN(dev, vgacrd1 == AST_IO_VGACRD1_TX_ANX9807_VBIOS,
+		 "Analogix ANX9807 detected, 0x%x, Gen%lu\n", vgacrd1, AST_GEN(ast));
 
 	/* Check 3rd Tx option (digital output afaik) */
-	ast->tx_chip_types |= AST_TX_NONE_BIT;
+	ast->tx_chip = AST_TX_NONE;
 
 	/*
 	 * VGACRA3 Enhanced Color Mode Register, check if DVO is already
···
 	if (!need_post) {
 		jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xff);
 		if (jreg & 0x80)
-			ast->tx_chip_types = AST_TX_SIL164_BIT;
+			ast->tx_chip = AST_TX_SIL164;
 	}
 
 	if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast) || IS_AST_GEN6(ast)) {
···
 		 * the SOC scratch register #1 bits 11:8 (interestingly marked
 		 * as "reserved" in the spec)
 		 */
-		jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, 0xff);
+		jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1,
+					      AST_IO_VGACRD1_TX_TYPE_MASK);
 		switch (jreg) {
-		case 0x04:
-			ast->tx_chip_types = AST_TX_SIL164_BIT;
+		case AST_IO_VGACRD1_TX_SIL164_VBIOS:
+			ast->tx_chip = AST_TX_SIL164;
 			break;
-		case 0x08:
+		case AST_IO_VGACRD1_TX_DP501_VBIOS:
 			ast->dp501_fw_addr = drmm_kzalloc(dev, 32*1024, GFP_KERNEL);
 			if (ast->dp501_fw_addr) {
 				/* backup firmware */
-				if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) {
+				if (ast_backup_fw(ast, ast->dp501_fw_addr, 32*1024)) {
 					drmm_kfree(dev, ast->dp501_fw_addr);
 					ast->dp501_fw_addr = NULL;
 				}
 			}
 			fallthrough;
-		case 0x0c:
-			ast->tx_chip_types = AST_TX_DP501_BIT;
+		case AST_IO_VGACRD1_TX_FW_EMBEDDED_FW:
+			ast->tx_chip = AST_TX_DP501;
 		}
 	} else if (IS_AST_GEN7(ast)) {
-		if (ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xD1, TX_TYPE_MASK) ==
-		    ASTDP_DPMCU_TX) {
+		if (ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, AST_IO_VGACRD1_TX_TYPE_MASK) ==
+		    AST_IO_VGACRD1_TX_ASTDP) {
 			int ret = ast_dp_launch(ast);
 
 			if (!ret)
-				ast->tx_chip_types = AST_TX_ASTDP_BIT;
+				ast->tx_chip = AST_TX_ASTDP;
 		}
 	}
 
-	/* Print stuff for diagnostic purposes */
-	if (ast->tx_chip_types & AST_TX_NONE_BIT)
-		drm_info(dev, "Using analog VGA\n");
-	if (ast->tx_chip_types & AST_TX_SIL164_BIT)
-		drm_info(dev, "Using Sil164 TMDS transmitter\n");
-	if (ast->tx_chip_types & AST_TX_DP501_BIT)
-		drm_info(dev, "Using DP501 DisplayPort transmitter\n");
-	if (ast->tx_chip_types & AST_TX_ASTDP_BIT)
-		drm_info(dev, "Using ASPEED DisplayPort transmitter\n");
+	drm_info(dev, "Using %s\n", info_str[ast->tx_chip]);
 }
 
-static int ast_get_dram_info(struct drm_device *dev)
+static int ast_get_dram_info(struct ast_device *ast)
 {
+	struct drm_device *dev = &ast->base;
 	struct device_node *np = dev->dev->of_node;
-	struct ast_device *ast = to_ast_device(dev);
 	uint32_t mcr_cfg, mcr_scu_mpll, mcr_scu_strap;
 	uint32_t denum, num, div, ref_pll, dsel;
 
···
 	ast_detect_widescreen(ast);
 	ast_detect_tx_chip(ast, need_post);
 
-	ret = ast_get_dram_info(dev);
+	ret = ast_get_dram_info(ast);
 	if (ret)
 		return ERR_PTR(ret);
 
···
 		 ast->mclk, ast->dram_type, ast->dram_bus_width);
 
 	if (need_post)
-		ast_post_gpu(dev);
+		ast_post_gpu(ast);
 
 	ret = ast_mm_init(ast);
 	if (ret)

drivers/gpu/drm/ast/ast_mode.c

···
 	.atomic_destroy_state = ast_crtc_atomic_destroy_state,
 };
 
-static int ast_crtc_init(struct drm_device *dev)
+static int ast_crtc_init(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
+	struct drm_device *dev = &ast->base;
 	struct drm_crtc *crtc = &ast->crtc;
 	int ret;
 
···
 	if (ret)
 		return ret;
 
-	ast_crtc_init(dev);
+	ret = ast_crtc_init(ast);
+	if (ret)
+		return ret;
 
-	if (ast->tx_chip_types & AST_TX_NONE_BIT) {
+	switch (ast->tx_chip) {
+	case AST_TX_NONE:
 		ret = ast_vga_output_init(ast);
-		if (ret)
-			return ret;
-	}
-	if (ast->tx_chip_types & AST_TX_SIL164_BIT) {
+		break;
+	case AST_TX_SIL164:
 		ret = ast_sil164_output_init(ast);
-		if (ret)
-			return ret;
-	}
-	if (ast->tx_chip_types & AST_TX_DP501_BIT) {
+		break;
+	case AST_TX_DP501:
 		ret = ast_dp501_output_init(ast);
-		if (ret)
-			return ret;
-	}
-	if (ast->tx_chip_types & AST_TX_ASTDP_BIT) {
+		break;
+	case AST_TX_ASTDP:
 		ret = ast_astdp_output_init(ast);
-		if (ret)
-			return ret;
+		break;
 	}
+	if (ret)
+		return ret;
 
 	drm_mode_config_reset(dev);
 

drivers/gpu/drm/ast/ast_post.c

···
 #include "ast_dram_tables.h"
 #include "ast_drv.h"
 
-static void ast_post_chip_2300(struct drm_device *dev);
-static void ast_post_chip_2500(struct drm_device *dev);
+static void ast_post_chip_2300(struct ast_device *ast);
+static void ast_post_chip_2500(struct ast_device *ast);
 
 static const u8 extreginfo[] = { 0x0f, 0x04, 0x1c, 0xff };
 static const u8 extreginfo_ast2300[] = { 0x0f, 0x04, 0x1f, 0xff };
 
-static void
-ast_set_def_ext_reg(struct drm_device *dev)
+static void ast_set_def_ext_reg(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
 	u8 i, index, reg;
 	const u8 *ext_reg_info;
 
···
 
 
 
-static void ast_init_dram_reg(struct drm_device *dev)
+static void ast_init_dram_reg(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
 	u8 j;
 	u32 data, temp, i;
 	const struct ast_dramstruct *dram_reg_info;
···
 	} while ((j & 0x40) == 0);
 }
 
-void ast_post_gpu(struct drm_device *dev)
+void ast_post_gpu(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
-
-	ast_set_def_ext_reg(dev);
+	ast_set_def_ext_reg(ast);
 
 	if (IS_AST_GEN7(ast)) {
-		if (ast->tx_chip_types & AST_TX_ASTDP_BIT)
+		if (ast->tx_chip == AST_TX_ASTDP)
 			ast_dp_launch(ast);
 	} else if (ast->config_mode == ast_use_p2a) {
 		if (IS_AST_GEN6(ast))
-			ast_post_chip_2500(dev);
+			ast_post_chip_2500(ast);
 		else if (IS_AST_GEN5(ast) || IS_AST_GEN4(ast))
-			ast_post_chip_2300(dev);
+			ast_post_chip_2300(ast);
 		else
-			ast_init_dram_reg(dev);
+			ast_init_dram_reg(ast);
 
-		ast_init_3rdtx(dev);
+		ast_init_3rdtx(ast);
 	} else {
-		if (ast->tx_chip_types & AST_TX_SIL164_BIT)
+		if (ast->tx_chip == AST_TX_SIL164)
 			ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xcf, 0x80);	/* Enable DVO */
 	}
 }
···
 
 }
 
-static void ast_post_chip_2300(struct drm_device *dev)
+static void ast_post_chip_2300(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
 	struct ast2300_dram_param param;
 	u32 temp;
 	u8 reg;
···
 	__ast_moutdwm(regs, 0x1e6e207c, 0x08000000); /* clear fast reset */
 }
 
-void ast_post_chip_2500(struct drm_device *dev)
+void ast_post_chip_2500(struct ast_device *ast)
 {
-	struct ast_device *ast = to_ast_device(dev);
+	struct drm_device *dev = &ast->base;
 	u32 temp;
 	u8 reg;
 

drivers/gpu/drm/ast/ast_reg.h

···
 #define AST_IO_VGACRCB_HWC_16BPP	BIT(0) /* set: ARGB4444, cleared: 2bpp palette */
 #define AST_IO_VGACRCB_HWC_ENABLED	BIT(1)
 
-#define AST_IO_VGACRD1_MCU_FW_EXECUTING	BIT(5)
+#define AST_IO_VGACRD1_MCU_FW_EXECUTING		BIT(5)
+/* Display Transmitter Type */
+#define AST_IO_VGACRD1_TX_TYPE_MASK		GENMASK(3, 1)
+#define AST_IO_VGACRD1_NO_TX			0x00
+#define AST_IO_VGACRD1_TX_ITE66121_VBIOS	0x02
+#define AST_IO_VGACRD1_TX_SIL164_VBIOS		0x04
+#define AST_IO_VGACRD1_TX_CH7003_VBIOS		0x06
+#define AST_IO_VGACRD1_TX_DP501_VBIOS		0x08
+#define AST_IO_VGACRD1_TX_ANX9807_VBIOS		0x0a
+#define AST_IO_VGACRD1_TX_FW_EMBEDDED_FW	0x0c /* special case of DP501 */
+#define AST_IO_VGACRD1_TX_ASTDP			0x0e
+
 #define AST_IO_VGACRD7_EDID_VALID_FLAG	BIT(0)
 #define AST_IO_VGACRDC_LINK_SUCCESS	BIT(0)
 #define AST_IO_VGACRDF_HPD		BIT(0)
+#define AST_IO_VGACRDF_DP_VIDEO_ENABLE	BIT(4) /* mirrors AST_IO_VGACRE3_DP_VIDEO_ENABLE */
+#define AST_IO_VGACRE3_DP_VIDEO_ENABLE	BIT(0)
+#define AST_IO_VGACRE3_DP_PHY_SLEEP	BIT(4)
 #define AST_IO_VGACRE5_EDID_READ_DONE	BIT(0)
 
 #define AST_IO_VGAIR1_R			(0x5A)
 #define AST_IO_VGAIR1_VREFRESH		BIT(3)
 
-/*
- * Display Transmitter Type
- */
-
-#define TX_TYPE_MASK			GENMASK(3, 1)
-#define NO_TX				(0 << 1)
-#define ITE66121_VBIOS_TX		(1 << 1)
-#define SI164_VBIOS_TX			(2 << 1)
-#define CH7003_VBIOS_TX			(3 << 1)
-#define DP501_VBIOS_TX			(4 << 1)
-#define ANX9807_VBIOS_TX		(5 << 1)
-#define TX_FW_EMBEDDED_FW_TX		(6 << 1)
-#define ASTDP_DPMCU_TX			(7 << 1)
 
 #define AST_VRAM_INIT_STATUS_MASK	GENMASK(7, 6)
 //#define AST_VRAM_INIT_BY_BMC		BIT(7)
···
 /*
  * AST DisplayPort
  */
-
-/* Define for Soc scratched reg used on ASTDP */
-#define AST_DP_PHY_SLEEP		BIT(4)
-#define AST_DP_VIDEO_ENABLE		BIT(0)
-
-/*
- * CRDF[b4]: Mirror of AST_DP_VIDEO_ENABLE
- * Precondition:	A. ~AST_DP_PHY_SLEEP  &&
- *			B. DP_HPD &&
- *			C. DP_LINK_SUCCESS
- */
-#define ASTDP_MIRROR_VIDEO_ENABLE	BIT(4)
 
 /*
  * ASTDP setmode registers:

drivers/gpu/drm/ast/ast_sil164.c

···
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static int ast_sil164_connector_init(struct drm_device *dev, struct drm_connector *connector)
-{
-	struct ast_device *ast = to_ast_device(dev);
-	struct i2c_adapter *ddc;
-	int ret;
-
-	ddc = ast_ddc_create(ast);
-	if (IS_ERR(ddc)) {
-		ret = PTR_ERR(ddc);
-		drm_err(dev, "failed to add DDC bus for connector; ret=%d\n", ret);
-		return ret;
-	}
-
-	ret = drm_connector_init_with_ddc(dev, connector, &ast_sil164_connector_funcs,
-					  DRM_MODE_CONNECTOR_DVII, ddc);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_sil164_connector_helper_funcs);
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
-
-	return 0;
-}
+/*
+ * Output
+ */
 
 int ast_sil164_output_init(struct ast_device *ast)
 {
 	struct drm_device *dev = &ast->base;
 	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.sil164.encoder;
-	struct ast_connector *ast_connector = &ast->output.sil164.connector;
-	struct drm_connector *connector = &ast_connector->base;
+	struct i2c_adapter *ddc;
+	struct drm_encoder *encoder;
+	struct ast_connector *ast_connector;
+	struct drm_connector *connector;
 	int ret;
 
+	/* DDC */
+
+	ddc = ast_ddc_create(ast);
+	if (IS_ERR(ddc))
+		return PTR_ERR(ddc);
+
+	/* encoder */
+
+	encoder = &ast->output.sil164.encoder;
 	ret = drm_encoder_init(dev, encoder, &ast_sil164_encoder_funcs,
 			       DRM_MODE_ENCODER_TMDS, NULL);
 	if (ret)
 		return ret;
 	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
-	ret = ast_sil164_connector_init(dev, connector);
+	/* connector */
+
+	ast_connector = &ast->output.sil164.connector;
+	connector = &ast_connector->base;
+	ret = drm_connector_init_with_ddc(dev, connector, &ast_sil164_connector_funcs,
+					  DRM_MODE_CONNECTOR_DVII, ddc);
 	if (ret)
 		return ret;
+	drm_connector_helper_add(connector, &ast_sil164_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
 	ast_connector->physical_status = connector->status;
 
 	ret = drm_connector_attach_encoder(connector, encoder);

drivers/gpu/drm/ast/ast_vga.c

···
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static int ast_vga_connector_init(struct drm_device *dev, struct drm_connector *connector)
-{
-	struct ast_device *ast = to_ast_device(dev);
-	struct i2c_adapter *ddc;
-	int ret;
-
-	ddc = ast_ddc_create(ast);
-	if (IS_ERR(ddc)) {
-		ret = PTR_ERR(ddc);
-		drm_err(dev, "failed to add DDC bus for connector; ret=%d\n", ret);
-		return ret;
-	}
-
-	ret = drm_connector_init_with_ddc(dev, connector, &ast_vga_connector_funcs,
-					  DRM_MODE_CONNECTOR_VGA, ddc);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_vga_connector_helper_funcs);
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
-
-	return 0;
-}
+/*
+ * Output
+ */
 
 int ast_vga_output_init(struct ast_device *ast)
 {
 	struct drm_device *dev = &ast->base;
 	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.vga.encoder;
-	struct ast_connector *ast_connector = &ast->output.vga.connector;
-	struct drm_connector *connector = &ast_connector->base;
+	struct i2c_adapter *ddc;
+	struct drm_encoder *encoder;
+	struct ast_connector *ast_connector;
+	struct drm_connector *connector;
 	int ret;
 
+	/* DDC */
+
+	ddc = ast_ddc_create(ast);
+	if (IS_ERR(ddc))
+		return PTR_ERR(ddc);
+
+	/* encoder */
+
+	encoder = &ast->output.vga.encoder;
 	ret = drm_encoder_init(dev, encoder, &ast_vga_encoder_funcs,
 			       DRM_MODE_ENCODER_DAC, NULL);
 	if (ret)
 		return ret;
 	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
-	ret = ast_vga_connector_init(dev, connector);
+	/* connector */
+
+	ast_connector = &ast->output.vga.connector;
+	connector = &ast_connector->base;
+	ret = drm_connector_init_with_ddc(dev, connector, &ast_vga_connector_funcs,
+					  DRM_MODE_CONNECTOR_VGA, ddc);
 	if (ret)
 		return ret;
+	drm_connector_helper_add(connector, &ast_vga_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
 	ast_connector->physical_status = connector->status;
 
 	ret = drm_connector_attach_encoder(connector, encoder);

drivers/gpu/drm/bridge/Kconfig

···
 	  It supports up to 720p resolution with 60 and 120 Hz refresh
 	  rates.
 
+config DRM_TI_TDP158
+	tristate "TI TDP158 HDMI/TMDS bridge"
+	depends on OF
+	select DRM_PANEL_BRIDGE
+	help
+	  Texas Instruments TDP158 HDMI/TMDS Bridge driver
+
 config DRM_TI_TFP410
 	tristate "TI TFP410 DVI/HDMI bridge"
 	depends on OF

drivers/gpu/drm/bridge/Makefile

···
 obj-$(CONFIG_DRM_TI_DLPC3433) += ti-dlpc3433.o
 obj-$(CONFIG_DRM_TI_SN65DSI83) += ti-sn65dsi83.o
 obj-$(CONFIG_DRM_TI_SN65DSI86) += ti-sn65dsi86.o
+obj-$(CONFIG_DRM_TI_TDP158) += ti-tdp158.o
 obj-$(CONFIG_DRM_TI_TFP410) += ti-tfp410.o
 obj-$(CONFIG_DRM_TI_TPD12S015) += ti-tpd12s015.o
 obj-$(CONFIG_DRM_NWL_MIPI_DSI) += nwl-dsi.o

drivers/gpu/drm/bridge/imx/Kconfig

···
 config DRM_IMX_LDB_HELPER
 	tristate
 
+config DRM_IMX_LEGACY_BRIDGE
+	tristate
+	depends on DRM_IMX
+	help
+	  This is a DRM bridge implementation for the DRM i.MX IPUv3 driver,
+	  that uses of_get_drm_display_mode to acquire display mode.
+
+	  Newer designs should not use this bridge and should use proper panel
+	  driver instead.
+
 config DRM_IMX8MP_DW_HDMI_BRIDGE
 	tristate "Freescale i.MX8MP HDMI-TX bridge support"
 	depends on OF

drivers/gpu/drm/bridge/imx/Makefile

···
 obj-$(CONFIG_DRM_IMX_LDB_HELPER) += imx-ldb-helper.o
+obj-$(CONFIG_DRM_IMX_LEGACY_BRIDGE) += imx-legacy-bridge.o
 obj-$(CONFIG_DRM_IMX8MP_DW_HDMI_BRIDGE) += imx8mp-hdmi-tx.o
 obj-$(CONFIG_DRM_IMX8MP_HDMI_PVI) += imx8mp-hdmi-pvi.o
 obj-$(CONFIG_DRM_IMX8QM_LDB) += imx8qm-ldb.o

drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c

···
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Freescale i.MX drm driver
+ *
+ * bridge driver for legacy DT bindings, utilizing display-timings node
+ */
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/bridge/imx.h>
+
+#include <video/of_display_timing.h>
+#include <video/of_videomode.h>
+
+struct imx_legacy_bridge {
+	struct drm_bridge base;
+
+	struct drm_display_mode mode;
+	u32 bus_flags;
+};
+
+#define to_imx_legacy_bridge(bridge)	container_of(bridge, struct imx_legacy_bridge, base)
+
+static int imx_legacy_bridge_attach(struct drm_bridge *bridge,
+				   enum drm_bridge_attach_flags flags)
+{
+	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int imx_legacy_bridge_get_modes(struct drm_bridge *bridge,
+				       struct drm_connector *connector)
+{
+	struct imx_legacy_bridge *imx_bridge = to_imx_legacy_bridge(bridge);
+	int ret;
+
+	ret = drm_connector_helper_get_modes_fixed(connector, &imx_bridge->mode);
+	if (ret)
+		return ret;
+
+	connector->display_info.bus_flags = imx_bridge->bus_flags;
+
+	return 0;
+}
+
+struct drm_bridge_funcs imx_legacy_bridge_funcs = {
+	.attach = imx_legacy_bridge_attach,
+	.get_modes = imx_legacy_bridge_get_modes,
+};
+
+struct drm_bridge *devm_imx_drm_legacy_bridge(struct device *dev,
+					      struct device_node *np,
+					      int type)
+{
+	struct imx_legacy_bridge *imx_bridge;
+	int ret;
+
+	imx_bridge = devm_kzalloc(dev, sizeof(*imx_bridge), GFP_KERNEL);
+	if (!imx_bridge)
+		return ERR_PTR(-ENOMEM);
+
+	ret = of_get_drm_display_mode(np,
+				      &imx_bridge->mode,
+				      &imx_bridge->bus_flags,
+				      OF_USE_NATIVE_MODE);
+	if (ret)
+		return ERR_PTR(ret);
+
+	imx_bridge->mode.type |= DRM_MODE_TYPE_DRIVER;
+
+	imx_bridge->base.funcs = &imx_legacy_bridge_funcs;
+	imx_bridge->base.of_node = np;
+	imx_bridge->base.ops = DRM_BRIDGE_OP_MODES;
+	imx_bridge->base.type = type;
+
+       ret = devm_drm_bridge_add(dev, &imx_bridge->base);
+       if (ret)
+               return ERR_PTR(ret);
+
+	return &imx_bridge->base;
+}
+EXPORT_SYMBOL_GPL(devm_imx_drm_legacy_bridge);
+
+MODULE_LICENSE("GPL");

drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c

···
 		       const struct drm_display_mode *mode)
 {
 	struct imx8mp_hdmi *hdmi = (struct imx8mp_hdmi *)data;
+	long round_rate;
 
 	if (mode->clock < 13500)
 		return MODE_CLOCK_LOW;
···
 	if (mode->clock > 297000)
 		return MODE_CLOCK_HIGH;
 
-	if (clk_round_rate(hdmi->pixclk, mode->clock * 1000) !=
-	    mode->clock * 1000)
+	round_rate = clk_round_rate(hdmi->pixclk, mode->clock * 1000);
+	/* imx8mp's pixel clock generator (fsl-samsung-hdmi) cannot generate
+	 * all possible frequencies, so allow some tolerance to support more
+	 * modes.
+	 * Allow 0.5% difference allowed in various standards (VESA, CEA861)
+	 * 0.5% = 5/1000 tolerance (mode->clock is 1/1000)
+	 */
+	if (abs(round_rate - mode->clock * 1000) > mode->clock * 5)
 		return MODE_CLOCK_RANGE;
 
 	/* We don't support double-clocked and Interlaced modes */
···
 	dw_hdmi_remove(hdmi->dw_hdmi);
 }
 
-static int __maybe_unused imx8mp_dw_hdmi_pm_suspend(struct device *dev)
+static int imx8mp_dw_hdmi_pm_suspend(struct device *dev)
 {
 	return 0;
 }
 
-static int __maybe_unused imx8mp_dw_hdmi_pm_resume(struct device *dev)
+static int imx8mp_dw_hdmi_pm_resume(struct device *dev)
 {
 	struct imx8mp_hdmi *hdmi = dev_get_drvdata(dev);
 
···
 }
 
 static const struct dev_pm_ops imx8mp_dw_hdmi_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(imx8mp_dw_hdmi_pm_suspend,
-				imx8mp_dw_hdmi_pm_resume)
+	SYSTEM_SLEEP_PM_OPS(imx8mp_dw_hdmi_pm_suspend, imx8mp_dw_hdmi_pm_resume)
 };
 
 static const struct of_device_id imx8mp_dw_hdmi_of_table[] = {
···
 	.driver		= {
 		.name	= "imx8mp-dw-hdmi-tx",
 		.of_match_table = imx8mp_dw_hdmi_of_table,
-		.pm = &imx8mp_dw_hdmi_pm_ops,
+		.pm = pm_ptr(&imx8mp_dw_hdmi_pm_ops),
 	},
 };
 

drivers/gpu/drm/bridge/imx/imx8qm-ldb.c

···
 	pm_runtime_disable(&pdev->dev);
 }
 
-static int __maybe_unused imx8qm_ldb_runtime_suspend(struct device *dev)
+static int imx8qm_ldb_runtime_suspend(struct device *dev)
 {
 	return 0;
 }
 
-static int __maybe_unused imx8qm_ldb_runtime_resume(struct device *dev)
+static int imx8qm_ldb_runtime_resume(struct device *dev)
 {
 	struct imx8qm_ldb *imx8qm_ldb = dev_get_drvdata(dev);
 	struct ldb *ldb = &imx8qm_ldb->base;
···
 }
 
 static const struct dev_pm_ops imx8qm_ldb_pm_ops = {
-	SET_RUNTIME_PM_OPS(imx8qm_ldb_runtime_suspend,
-			   imx8qm_ldb_runtime_resume, NULL)
+	RUNTIME_PM_OPS(imx8qm_ldb_runtime_suspend, imx8qm_ldb_runtime_resume, NULL)
 };
 
 static const struct of_device_id imx8qm_ldb_dt_ids[] = {
···
 	.probe	= imx8qm_ldb_probe,
 	.remove_new = imx8qm_ldb_remove,
 	.driver	= {
-		.pm = &imx8qm_ldb_pm_ops,
+		.pm = pm_ptr(&imx8qm_ldb_pm_ops),
 		.name = DRIVER_NAME,
 		.of_match_table = imx8qm_ldb_dt_ids,
 	},

drivers/gpu/drm/bridge/imx/imx8qxp-ldb.c

···
 	pm_runtime_disable(&pdev->dev);
 }
 
-static int __maybe_unused imx8qxp_ldb_runtime_suspend(struct device *dev)
+static int imx8qxp_ldb_runtime_suspend(struct device *dev)
 {
 	return 0;
 }
 
-static int __maybe_unused imx8qxp_ldb_runtime_resume(struct device *dev)
+static int imx8qxp_ldb_runtime_resume(struct device *dev)
 {
 	struct imx8qxp_ldb *imx8qxp_ldb = dev_get_drvdata(dev);
 	struct ldb *ldb = &imx8qxp_ldb->base;
···
 }
 
 static const struct dev_pm_ops imx8qxp_ldb_pm_ops = {
-	SET_RUNTIME_PM_OPS(imx8qxp_ldb_runtime_suspend,
-			   imx8qxp_ldb_runtime_resume, NULL)
+	RUNTIME_PM_OPS(imx8qxp_ldb_runtime_suspend, imx8qxp_ldb_runtime_resume, NULL)
 };
 
 static const struct of_device_id imx8qxp_ldb_dt_ids[] = {
···
 	.probe	= imx8qxp_ldb_probe,
 	.remove_new = imx8qxp_ldb_remove,
 	.driver	= {
-		.pm = &imx8qxp_ldb_pm_ops,
+		.pm = pm_ptr(&imx8qxp_ldb_pm_ops),
 		.name = DRIVER_NAME,
 		.of_match_table = imx8qxp_ldb_dt_ids,
 	},

drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c

···
 	pm_runtime_disable(&pdev->dev);
 }
 
-static int __maybe_unused imx8qxp_pc_runtime_suspend(struct device *dev)
+static int imx8qxp_pc_runtime_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct imx8qxp_pc *pc = platform_get_drvdata(pdev);
···
 	return ret;
 }
 
-static int __maybe_unused imx8qxp_pc_runtime_resume(struct device *dev)
+static int imx8qxp_pc_runtime_resume(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct imx8qxp_pc *pc = platform_get_drvdata(pdev);
···
 }
 
 static const struct dev_pm_ops imx8qxp_pc_pm_ops = {
-	SET_RUNTIME_PM_OPS(imx8qxp_pc_runtime_suspend,
-			   imx8qxp_pc_runtime_resume, NULL)
+	RUNTIME_PM_OPS(imx8qxp_pc_runtime_suspend, imx8qxp_pc_runtime_resume, NULL)
 };
 
 static const struct of_device_id imx8qxp_pc_dt_ids[] = {
···
 	.probe	= imx8qxp_pc_bridge_probe,
 	.remove_new = imx8qxp_pc_bridge_remove,
 	.driver	= {
-		.pm = &imx8qxp_pc_pm_ops,
+		.pm = pm_ptr(&imx8qxp_pc_pm_ops),
 		.name = DRIVER_NAME,
 		.of_match_table = imx8qxp_pc_dt_ids,
 	},

drivers/gpu/drm/bridge/samsung-dsim.c

···
 }
 EXPORT_SYMBOL_GPL(samsung_dsim_remove);
 
-static int __maybe_unused samsung_dsim_suspend(struct device *dev)
+static int samsung_dsim_suspend(struct device *dev)
 {
 	struct samsung_dsim *dsi = dev_get_drvdata(dev);
 	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
···
 	return 0;
 }
 
-static int __maybe_unused samsung_dsim_resume(struct device *dev)
+static int samsung_dsim_resume(struct device *dev)
 {
 	struct samsung_dsim *dsi = dev_get_drvdata(dev);
 	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
···
 }
 
 const struct dev_pm_ops samsung_dsim_pm_ops = {
-	SET_RUNTIME_PM_OPS(samsung_dsim_suspend, samsung_dsim_resume, NULL)
+	RUNTIME_PM_OPS(samsung_dsim_suspend, samsung_dsim_resume, NULL)
 	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
 				pm_runtime_force_resume)
 };
···
 	.remove_new = samsung_dsim_remove,
 	.driver = {
 		   .name = "samsung-dsim",
-		   .pm = &samsung_dsim_pm_ops,
+		   .pm = pm_ptr(&samsung_dsim_pm_ops),
 		   .of_match_table = samsung_dsim_of_match,
 	},
 };

drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c

···
 	cec_unregister_adapter(cec->adap);
 }
 
-static int __maybe_unused dw_hdmi_cec_resume(struct device *dev)
+static int dw_hdmi_cec_resume(struct device *dev)
 {
 	struct dw_hdmi_cec *cec = dev_get_drvdata(dev);
 
···
 	return 0;
 }
 
-static int __maybe_unused dw_hdmi_cec_suspend(struct device *dev)
+static int dw_hdmi_cec_suspend(struct device *dev)
 {
 	struct dw_hdmi_cec *cec = dev_get_drvdata(dev);
 
···
 }
 
 static const struct dev_pm_ops dw_hdmi_cec_pm = {
-	SET_SYSTEM_SLEEP_PM_OPS(dw_hdmi_cec_suspend, dw_hdmi_cec_resume)
+	SYSTEM_SLEEP_PM_OPS(dw_hdmi_cec_suspend, dw_hdmi_cec_resume)
 };
 
 static struct platform_driver dw_hdmi_cec_driver = {
···
 	.remove_new = dw_hdmi_cec_remove,
 	.driver = {
 		.name = "dw-hdmi-cec",
-		.pm = &dw_hdmi_cec_pm,
+		.pm = pm_ptr(&dw_hdmi_cec_pm),
 	},
 };
 module_platform_driver(dw_hdmi_cec_driver);

drivers/gpu/drm/bridge/tc358767.c

···
 	.n_yes_ranges = ARRAY_SIZE(tc_precious_ranges),
 };
 
-static const struct regmap_range tc_non_writeable_ranges[] = {
-	regmap_reg_range(PPI_BUSYPPI, PPI_BUSYPPI),
-	regmap_reg_range(DSI_BUSYDSI, DSI_BUSYDSI),
-	regmap_reg_range(DSI_LANESTATUS0, DSI_INTSTATUS),
-	regmap_reg_range(TC_IDREG, SYSSTAT),
-	regmap_reg_range(GPIOI, GPIOI),
-	regmap_reg_range(DP0_LTSTAT, DP0_SNKLTCHGREQ),
-};
-
-static const struct regmap_access_table tc_writeable_table = {
-	.no_ranges = tc_non_writeable_ranges,
-	.n_no_ranges = ARRAY_SIZE(tc_non_writeable_ranges),
-};
+static bool tc_writeable_reg(struct device *dev, unsigned int reg)
+{
+	/* RO reg */
+	switch (reg) {
+	case PPI_BUSYPPI:
+	case DSI_BUSYDSI:
+	case DSI_LANESTATUS0:
+	case DSI_LANESTATUS1:
+	case DSI_INTSTATUS:
+	case TC_IDREG:
+	case SYSBOOT:
+	case SYSSTAT:
+	case GPIOI:
+	case DP0_LTSTAT:
+	case DP0_SNKLTCHGREQ:
+		return false;
+	}
+	/* WO reg */
+	switch (reg) {
+	case DSI_STARTDSI:
+	case DSI_INTCLR:
+		return true;
+	}
+	return tc_readable_reg(dev, reg);
+}
 
 static const struct regmap_config tc_regmap_config = {
 	.name = "tc358767",
···
 	.max_register = PLL_DBG,
 	.cache_type = REGCACHE_MAPLE,
 	.readable_reg = tc_readable_reg,
+	.writeable_reg = tc_writeable_reg,
 	.volatile_table = &tc_volatile_table,
 	.precious_table = &tc_precious_table,
-	.wr_table = &tc_writeable_table,
 	.reg_format_endian = REGMAP_ENDIAN_BIG,
 	.val_format_endian = REGMAP_ENDIAN_LITTLE,
 };
···
 		bool h = val & INT_GPIO_H(tc->hpd_pin);
 		bool lc = val & INT_GPIO_LC(tc->hpd_pin);
 
-		dev_dbg(tc->dev, "GPIO%d: %s %s\n", tc->hpd_pin,
-			h ? "H" : "", lc ? "LC" : "");
-
-		if (h || lc)
+		if (h || lc) {
+			dev_dbg(tc->dev, "GPIO%d: %s %s\n", tc->hpd_pin,
+				h ? "H" : "", lc ? "LC" : "");
 			drm_kms_helper_hotplug_event(tc->bridge.dev);
+		}
 	}
 
 	regmap_write(tc->regmap, INTSTS_G, val);
···
 	/* port@1 is the DPI input/output port */
 	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, &bridge);
 	if (ret && ret != -ENODEV)
-		return ret;
+		return dev_err_probe(dev, ret,
+				     "Could not find DPI panel or bridge\n");
 
 	if (panel) {
 		bridge = devm_drm_panel_bridge_add(dev, panel);
···
 	/* port@2 is the output port */
 	ret = drm_of_find_panel_or_bridge(dev->of_node, 2, 0, &panel, NULL);
 	if (ret && ret != -ENODEV)
-		return ret;
+		return dev_err_probe(dev, ret,
+				     "Could not find DSI panel or bridge\n");
 
 	if (panel) {
 		struct drm_bridge *panel_bridge;
···
 		ret = tc_mipi_dsi_host_attach(tc);
 		if (ret) {
 			drm_bridge_remove(&tc->bridge);
-			return ret;
+			return dev_err_probe(dev, ret, "Failed to attach DSI host\n");
 		}
 	}
 

drivers/gpu/drm/bridge/ti-sn65dsi86.c

···
 }
 
 #else
-static inline int ti_sn_pwm_pin_request(struct ti_sn65dsi86 *pdata) { return 0; }
-static inline void ti_sn_pwm_pin_release(struct ti_sn65dsi86 *pdata) {}
+static inline int __maybe_unused ti_sn_pwm_pin_request(struct ti_sn65dsi86 *pdata) { return 0; }
+static inline void __maybe_unused ti_sn_pwm_pin_release(struct ti_sn65dsi86 *pdata) {}
 
 static inline int ti_sn_pwm_register(void) { return 0; }
 static inline void ti_sn_pwm_unregister(void) {}

drivers/gpu/drm/bridge/ti-tdp158.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2024 Freebox SAS
+ */
+
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+
+struct tdp158 {
+	struct drm_bridge bridge;
+	struct drm_bridge *next;
+	struct gpio_desc *enable; // Operation Enable - pin 36
+	struct regulator *vcc; // 3.3V
+	struct regulator *vdd; // 1.1V
+	struct device *dev;
+};
+
+static void tdp158_enable(struct drm_bridge *bridge, struct drm_bridge_state *prev)
+{
+	int err;
+	struct tdp158 *tdp158 = bridge->driver_private;
+
+	err = regulator_enable(tdp158->vcc);
+	if (err)
+		dev_err(tdp158->dev, "failed to enable vcc: %d", err);
+
+	err = regulator_enable(tdp158->vdd);
+	if (err)
+		dev_err(tdp158->dev, "failed to enable vdd: %d", err);
+
+	gpiod_set_value_cansleep(tdp158->enable, 1);
+}
+
+static void tdp158_disable(struct drm_bridge *bridge, struct drm_bridge_state *prev)
+{
+	struct tdp158 *tdp158 = bridge->driver_private;
+
+	gpiod_set_value_cansleep(tdp158->enable, 0);
+	regulator_disable(tdp158->vdd);
+	regulator_disable(tdp158->vcc);
+}
+
+static int tdp158_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags)
+{
+	struct tdp158 *tdp158 = bridge->driver_private;
+
+	return drm_bridge_attach(bridge->encoder, tdp158->next, bridge, flags);
+}
+
+static const struct drm_bridge_funcs tdp158_bridge_funcs = {
+	.attach = tdp158_attach,
+	.atomic_enable = tdp158_enable,
+	.atomic_disable = tdp158_disable,
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
+};
+
+static int tdp158_probe(struct i2c_client *client)
+{
+	struct tdp158 *tdp158;
+	struct device *dev = &client->dev;
+
+	tdp158 = devm_kzalloc(dev, sizeof(*tdp158), GFP_KERNEL);
+	if (!tdp158)
+		return -ENOMEM;
+
+	tdp158->next = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+	if (IS_ERR(tdp158->next))
+		return dev_err_probe(dev, PTR_ERR(tdp158->next), "missing bridge");
+
+	tdp158->vcc = devm_regulator_get(dev, "vcc");
+	if (IS_ERR(tdp158->vcc))
+		return dev_err_probe(dev, PTR_ERR(tdp158->vcc), "vcc");
+
+	tdp158->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(tdp158->vdd))
+		return dev_err_probe(dev, PTR_ERR(tdp158->vdd), "vdd");
+
+	tdp158->enable = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(tdp158->enable))
+		return dev_err_probe(dev, PTR_ERR(tdp158->enable), "enable");
+
+	tdp158->bridge.of_node = dev->of_node;
+	tdp158->bridge.funcs = &tdp158_bridge_funcs;
+	tdp158->bridge.driver_private = tdp158;
+	tdp158->dev = dev;
+
+	return devm_drm_bridge_add(dev, &tdp158->bridge);
+}
+
+static const struct of_device_id tdp158_match_table[] = {
+	{ .compatible = "ti,tdp158" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tdp158_match_table);
+
+static struct i2c_driver tdp158_driver = {
+	.probe = tdp158_probe,
+	.driver = {
+		.name = "tdp158",
+		.of_match_table = tdp158_match_table,
+	},
+};
+module_i2c_driver(tdp158_driver);
+
+MODULE_DESCRIPTION("TI TDP158 driver");
+MODULE_LICENSE("GPL");

drivers/gpu/drm/display/Kconfig

···
 
 	  If in doubt, say "N".
 
+config DRM_DISPLAY_DSC_HELPER
+	bool
+	depends on DRM_DISPLAY_HELPER
+	help
+	  DRM display helpers for VESA DSC (used by DSI and DisplayPort).
+
 config DRM_DISPLAY_HDCP_HELPER
 	bool
 	help

drivers/gpu/drm/display/Makefile

···
 drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_HELPER) += \
 	drm_dp_dual_mode_helper.o \
 	drm_dp_helper.o \
-	drm_dp_mst_topology.o \
-	drm_dsc_helper.o
+	drm_dp_mst_topology.o
 drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_TUNNEL) += \
 	drm_dp_tunnel.o
+drm_display_helper-$(CONFIG_DRM_DISPLAY_DSC_HELPER) += \
+	drm_dsc_helper.o
 drm_display_helper-$(CONFIG_DRM_DISPLAY_HDCP_HELPER) += drm_hdcp_helper.o
 drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_HELPER) += \
 	drm_hdmi_helper.o \

drivers/gpu/drm/drm_atomic_helper.c

···
 				  bool stall)
 {
 	int i, ret;
-	unsigned long flags;
+	unsigned long flags = 0;
 	struct drm_connector *connector;
 	struct drm_connector_state *old_conn_state, *new_conn_state;
 	struct drm_crtc *crtc;

drivers/gpu/drm/drm_framebuffer.c

···
 
 	return 0;
 }
+EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_framebuffer_check_src_coords);
 
 /**
  * drm_mode_addfb - add an FB to the graphics configuration
···
 
 	fb->funcs->destroy(fb);
 }
+EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_framebuffer_free);
 
 /**
  * drm_framebuffer_init - initialize a framebuffer

drivers/gpu/drm/drm_gem_vram_helper.c

···
 #include <drm/drm_mode.h>
 #include <drm/drm_plane.h>
 #include <drm/drm_prime.h>
-#include <drm/drm_simple_kms_helper.h>
 
 #include <drm/ttm/ttm_range_manager.h>
 #include <drm/ttm/ttm_tt.h>
···
 	__drm_gem_vram_plane_helper_cleanup_fb(plane, old_state, fb->format->num_planes);
 }
 EXPORT_SYMBOL(drm_gem_vram_plane_helper_cleanup_fb);
-
-/*
- * Helpers for struct drm_simple_display_pipe_funcs
- */
-
-/**
- * drm_gem_vram_simple_display_pipe_prepare_fb() - Implements &struct
- *				   drm_simple_display_pipe_funcs.prepare_fb
- * @pipe:	a simple display pipe
- * @new_state:	the plane's new state
- *
- * During plane updates, this function pins the GEM VRAM
- * objects of the plane's new framebuffer to VRAM. Call
- * drm_gem_vram_simple_display_pipe_cleanup_fb() to unpin them.
- *
- * Returns:
- *	0 on success, or
- *	a negative errno code otherwise.
- */
-int drm_gem_vram_simple_display_pipe_prepare_fb(
-	struct drm_simple_display_pipe *pipe,
-	struct drm_plane_state *new_state)
-{
-	return drm_gem_vram_plane_helper_prepare_fb(&pipe->plane, new_state);
-}
-EXPORT_SYMBOL(drm_gem_vram_simple_display_pipe_prepare_fb);
-
-/**
- * drm_gem_vram_simple_display_pipe_cleanup_fb() - Implements &struct
- *						   drm_simple_display_pipe_funcs.cleanup_fb
- * @pipe:	a simple display pipe
- * @old_state:	the plane's old state
- *
- * During plane updates, this function unpins the GEM VRAM
- * objects of the plane's old framebuffer from VRAM. Complements
- * drm_gem_vram_simple_display_pipe_prepare_fb().
- */
-void drm_gem_vram_simple_display_pipe_cleanup_fb(
-	struct drm_simple_display_pipe *pipe,
-	struct drm_plane_state *old_state)
-{
-	drm_gem_vram_plane_helper_cleanup_fb(&pipe->plane, old_state);
-}
-EXPORT_SYMBOL(drm_gem_vram_simple_display_pipe_cleanup_fb);
 
 /*
  * PRIME helpers

drivers/gpu/drm/drm_mm.c

···
 
 INTERVAL_TREE_DEFINE(struct drm_mm_node, rb,
 		     u64, __subtree_last,
-		     START, LAST, static inline, drm_mm_interval_tree)
+		     START, LAST, static inline __maybe_unused, drm_mm_interval_tree)
 
 struct drm_mm_node *
 __drm_mm_interval_first(const struct drm_mm *mm, u64 start, u64 last)
···
 }
 EXPORT_SYMBOL(drm_mm_insert_node_in_range);
 
-static inline bool drm_mm_node_scanned_block(const struct drm_mm_node *node)
+static inline __maybe_unused bool drm_mm_node_scanned_block(const struct drm_mm_node *node)
 {
 	return test_bit(DRM_MM_NODE_SCANNED_BIT, &node->flags);
 }

drivers/gpu/drm/drm_mode_object.c

···
 {
 	return __drm_mode_object_add(dev, obj, obj_type, true, NULL);
 }
+EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_mode_object_add);
 
 void drm_mode_object_register(struct drm_device *dev,
 			      struct drm_mode_object *obj)

drivers/gpu/drm/etnaviv/etnaviv_sched.c

···
 
 	drm_sched_resubmit_jobs(&gpu->sched);
 
-	drm_sched_start(&gpu->sched);
+	drm_sched_start(&gpu->sched, 0);
 	return DRM_GPU_SCHED_STAT_NOMINAL;
 
 out_no_timeout:

drivers/gpu/drm/exynos/exynos_hdmi.c

···
 static int hdmi_get_modes(struct drm_connector *connector)
 {
 	struct hdmi_context *hdata = connector_to_hdmi(connector);
-	struct edid *edid;
+	const struct drm_display_info *info = &connector->display_info;
+	const struct drm_edid *drm_edid;
 	int ret;
 
 	if (!hdata->ddc_adpt)
 		goto no_edid;
 
-	edid = drm_get_edid(connector, hdata->ddc_adpt);
-	if (!edid)
+	drm_edid = drm_edid_read_ddc(connector, hdata->ddc_adpt);
+
+	ret = drm_edid_connector_update(connector, drm_edid);
+	if (ret)
+		return 0;
+
+	cec_notifier_set_phys_addr(hdata->notifier, info->source_physical_address);
+
+	if (!drm_edid)
 		goto no_edid;
 
-	hdata->dvi_mode = !connector->display_info.is_hdmi;
+	hdata->dvi_mode = !info->is_hdmi;
 	DRM_DEV_DEBUG_KMS(hdata->dev, "%s : width[%d] x height[%d]\n",
 			  (hdata->dvi_mode ? "dvi monitor" : "hdmi monitor"),
-			  edid->width_cm, edid->height_cm);
+			  info->width_mm / 10, info->height_mm / 10);
 
-	drm_connector_update_edid_property(connector, edid);
-	cec_notifier_set_phys_addr_from_edid(hdata->notifier, edid);
+	ret = drm_edid_connector_add_modes(connector);
 
-	ret = drm_add_edid_modes(connector, edid);
-
-	kfree(edid);
+	drm_edid_free(drm_edid);
 
 	return ret;
 

drivers/gpu/drm/i915/Kconfig

···
 	select SHMEM
 	select TMPFS
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_DISPLAY_HELPER

drivers/gpu/drm/imagination/pvr_ccb.c

···
 	bool reserved = false;
 	u32 retries = 0;
 
-	while ((jiffies - start_timestamp) < (u32)RESERVE_SLOT_TIMEOUT ||
+	while (time_before(jiffies, start_timestamp + RESERVE_SLOT_TIMEOUT) ||
 	       retries < RESERVE_SLOT_MIN_RETRIES) {
 		reserved = pvr_kccb_try_reserve_slot(pvr_dev);
 		if (reserved)

drivers/gpu/drm/imagination/pvr_context.c

···
 	void *stream;
 	int err;
 
-	stream = kzalloc(stream_size, GFP_KERNEL);
-	if (!stream)
-		return -ENOMEM;
-
-	if (copy_from_user(stream, u64_to_user_ptr(stream_user_ptr), stream_size)) {
-		err = -EFAULT;
-		goto err_free;
-	}
+	stream = memdup_user(u64_to_user_ptr(stream_user_ptr), stream_size);
+	if (IS_ERR(stream))
+		return PTR_ERR(stream);
 
 	err = pvr_stream_process(pvr_dev, cmd_defs, stream, stream_size, dest);
-	if (err)
-		goto err_free;
 
-	kfree(stream);
-
-	return 0;
-
-err_free:
 	kfree(stream);
 
 	return err;

drivers/gpu/drm/imagination/pvr_drv.c

···
 	return ret;
 }
 
-static __always_inline u64
+static __always_inline __maybe_unused u64
 pvr_fw_version_packed(u32 major, u32 minor)
 {
 	return ((u64)major << 32) | minor;

drivers/gpu/drm/imagination/pvr_job.c

···
 	void *stream;
 	int err;
 
-	stream = kzalloc(stream_len, GFP_KERNEL);
-	if (!stream)
-		return -ENOMEM;
-
-	if (copy_from_user(stream, u64_to_user_ptr(stream_userptr), stream_len)) {
-		err = -EFAULT;
-		goto err_free_stream;
-	}
+	stream = memdup_user(u64_to_user_ptr(stream_userptr), stream_len);
+	if (IS_ERR(stream))
+		return PTR_ERR(stream);
 
 	err = pvr_job_process_stream(pvr_dev, stream_def, stream, stream_len, job);
 
-err_free_stream:
 	kfree(stream);
-
 	return err;
 }
 

drivers/gpu/drm/imagination/pvr_queue.c

···
 		}
 	}
 
-	drm_sched_start(&queue->scheduler);
+	drm_sched_start(&queue->scheduler, 0);
 }
 
 /**
···
 	}
 	mutex_unlock(&pvr_dev->queues.lock);
 
-	drm_sched_start(sched);
+	drm_sched_start(sched, 0);
 
 	return DRM_GPU_SCHED_STAT_NOMINAL;
 }

drivers/gpu/drm/imagination/pvr_vm.c

···
 
 	xa_lock(&pvr_file->vm_ctx_handles);
 	vm_ctx = xa_load(&pvr_file->vm_ctx_handles, handle);
-	if (vm_ctx)
-		kref_get(&vm_ctx->ref_count);
-
+	pvr_vm_context_get(vm_ctx);
 	xa_unlock(&pvr_file->vm_ctx_handles);
 
 	return vm_ctx;

drivers/gpu/drm/imx/ipuv3/Kconfig

···
 
 config DRM_IMX_PARALLEL_DISPLAY
 	tristate "Support for parallel displays"
-	select DRM_PANEL
 	depends on DRM_IMX
+	select DRM_BRIDGE
+	select DRM_PANEL_BRIDGE
 	select VIDEOMODE_HELPERS
 
 config DRM_IMX_TVE
···
 
 config DRM_IMX_LDB
 	tristate "Support for LVDS displays"
-	depends on DRM_IMX && MFD_SYSCON
+	depends on DRM_IMX
 	depends on COMMON_CLK
-	select DRM_PANEL
+	select MFD_SYSCON
+	select DRM_BRIDGE
+	select DRM_PANEL_BRIDGE
+	select DRM_IMX_LEGACY_BRIDGE
 	help
 	  Choose this to enable the internal LVDS Display Bridge (LDB)
 	  found on i.MX53 and i.MX6 processors.

drivers/gpu/drm/imx/ipuv3/imx-drm-core.c

···
 
 DEFINE_DRM_GEM_DMA_FOPS(imx_drm_driver_fops);
 
-void imx_drm_connector_destroy(struct drm_connector *connector)
-{
-	drm_connector_unregister(connector);
-	drm_connector_cleanup(connector);
-}
-EXPORT_SYMBOL_GPL(imx_drm_connector_destroy);
-
 static int imx_drm_atomic_check(struct drm_device *dev,
 				struct drm_atomic_state *state)
 {

drivers/gpu/drm/imx/ipuv3/imx-drm.h

···
 #define _IMX_DRM_H_
 
 struct device_node;
-struct drm_crtc;
 struct drm_connector;
 struct drm_device;
-struct drm_display_mode;
 struct drm_encoder;
-struct drm_framebuffer;
-struct drm_plane;
-struct platform_device;
 
 struct imx_crtc_state {
 	struct drm_crtc_state			base;
···
 {
 	return container_of(s, struct imx_crtc_state, base);
 }
-int imx_drm_init_drm(struct platform_device *pdev,
-		int preferred_bpp);
-int imx_drm_exit_drm(void);
 
 extern struct platform_driver ipu_drm_driver;
 
-void imx_drm_mode_config_init(struct drm_device *drm);
-
-struct drm_gem_dma_object *imx_drm_fb_get_obj(struct drm_framebuffer *fb);
-
 int imx_drm_encoder_parse_of(struct drm_device *drm,
 	struct drm_encoder *encoder, struct device_node *np);
-
-void imx_drm_connector_destroy(struct drm_connector *connector);
 
 int ipu_planes_assign_pre(struct drm_device *dev,
 			  struct drm_atomic_state *state);

drivers/gpu/drm/imx/ipuv3/imx-ldb.c

···
 #include <linux/regmap.h>
 #include <linux/videodev2.h>
 
-#include <video/of_display_timing.h>
-#include <video/of_videomode.h>
-
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
-#include <drm/drm_edid.h>
+#include <drm/drm_bridge_connector.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_of.h>
-#include <drm/drm_panel.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
+#include <drm/bridge/imx.h>
 
 #include "imx-drm.h"
 
···
 struct imx_ldb_channel;
 
 struct imx_ldb_encoder {
-	struct drm_connector connector;
 	struct drm_encoder encoder;
 	struct imx_ldb_channel *channel;
 };
···
 struct imx_ldb_channel {
 	struct imx_ldb *ldb;
 
-	/* Defines what is connected to the ldb, only one at a time */
-	struct drm_panel *panel;
 	struct drm_bridge *bridge;
 
 	struct device_node *child;
-	struct i2c_adapter *ddc;
 	int chno;
-	const struct drm_edid *drm_edid;
-	struct drm_display_mode mode;
-	int mode_valid;
 	u32 bus_format;
-	u32 bus_flags;
 };
-
-static inline struct imx_ldb_channel *con_to_imx_ldb_ch(struct drm_connector *c)
-{
-	return container_of(c, struct imx_ldb_encoder, connector)->channel;
-}
 
 static inline struct imx_ldb_channel *enc_to_imx_ldb_ch(struct drm_encoder *e)
 {
···
 	}
 }
 
-static int imx_ldb_connector_get_modes(struct drm_connector *connector)
-{
-	struct imx_ldb_channel *imx_ldb_ch = con_to_imx_ldb_ch(connector);
-	int num_modes;
-
-	num_modes = drm_panel_get_modes(imx_ldb_ch->panel, connector);
-	if (num_modes > 0)
-		return num_modes;
-
-	if (!imx_ldb_ch->drm_edid && imx_ldb_ch->ddc) {
-		imx_ldb_ch->drm_edid = drm_edid_read_ddc(connector,
-							 imx_ldb_ch->ddc);
-		drm_edid_connector_update(connector, imx_ldb_ch->drm_edid);
-	}
-
-	if (imx_ldb_ch->drm_edid)
-		num_modes = drm_edid_connector_add_modes(connector);
-
-	if (imx_ldb_ch->mode_valid) {
-		struct drm_display_mode *mode;
-
-		mode = drm_mode_duplicate(connector->dev, &imx_ldb_ch->mode);
-		if (!mode)
-			return -EINVAL;
-		mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-		drm_mode_probed_add(connector, mode);
-		num_modes++;
-	}
-
-	return num_modes;
-}
-
 static void imx_ldb_set_clock(struct imx_ldb *ldb, int mux, int chno,
 		unsigned long serial_clk, unsigned long di_clk)
 {
···
 		return;
 	}
 
-	drm_panel_prepare(imx_ldb_ch->panel);
-
 	if (dual) {
 		clk_set_parent(ldb->clk_sel[mux], ldb->clk[0]);
 		clk_set_parent(ldb->clk_sel[mux], ldb->clk[1]);
···
 	}
 
 	regmap_write(ldb->regmap, IOMUXC_GPR2, ldb->ldb_ctrl);
-
-	drm_panel_enable(imx_ldb_ch->panel);
 }
 
 static void
···
 	int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;
 	int mux, ret;
 
-	drm_panel_disable(imx_ldb_ch->panel);
-
 	if (imx_ldb_ch == &ldb->channel[0] || dual)
 		ldb->ldb_ctrl &= ~LDB_CH0_MODE_EN_MASK;
 	if (imx_ldb_ch == &ldb->channel[1] || dual)
···
 		dev_err(ldb->dev,
 			"unable to set di%d parent clock to original parent\n",
 			mux);
-
-	drm_panel_unprepare(imx_ldb_ch->panel);
 }
 
 static int imx_ldb_encoder_atomic_check(struct drm_encoder *encoder,
···
 	/* Bus format description in DT overrides connector display info. */
 	if (!bus_format && di->num_bus_formats) {
 		bus_format = di->bus_formats[0];
-		imx_crtc_state->bus_flags = di->bus_flags;
 	} else {
 		bus_format = imx_ldb_ch->bus_format;
-		imx_crtc_state->bus_flags = imx_ldb_ch->bus_flags;
 	}
+
+	imx_crtc_state->bus_flags = di->bus_flags;
+
 	switch (bus_format) {
 	case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
 		imx_crtc_state->bus_format = MEDIA_BUS_FMT_RGB666_1X18;
···
 	return 0;
 }
 
-
-static const struct drm_connector_funcs imx_ldb_connector_funcs = {
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = imx_drm_connector_destroy,
-	.reset = drm_atomic_helper_connector_reset,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static const struct drm_connector_helper_funcs imx_ldb_connector_helper_funcs = {
-	.get_modes = imx_ldb_connector_get_modes,
-};
 
 static const struct drm_encoder_helper_funcs imx_ldb_encoder_helper_funcs = {
 	.atomic_mode_set = imx_ldb_encoder_atomic_mode_set,
···
 		return PTR_ERR(ldb_encoder);
 
 	ldb_encoder->channel = imx_ldb_ch;
-	connector = &ldb_encoder->connector;
 	encoder = &ldb_encoder->encoder;
 
 	ret = imx_drm_encoder_parse_of(drm, encoder, imx_ldb_ch->child);
···
 
 	drm_encoder_helper_add(encoder, &imx_ldb_encoder_helper_funcs);
 
-	if (imx_ldb_ch->bridge) {
-		ret = drm_bridge_attach(encoder, imx_ldb_ch->bridge, NULL, 0);
-		if (ret)
-			return ret;
-	} else {
-		/*
-		 * We want to add the connector whenever there is no bridge
-		 * that brings its own, not only when there is a panel. For
-		 * historical reasons, the ldb driver can also work without
-		 * a panel.
-		 */
-		drm_connector_helper_add(connector,
-					 &imx_ldb_connector_helper_funcs);
-		drm_connector_init_with_ddc(drm, connector,
-					    &imx_ldb_connector_funcs,
-					    DRM_MODE_CONNECTOR_LVDS,
-					    imx_ldb_ch->ddc);
-		drm_connector_attach_encoder(connector, encoder);
-	}
+	ret = drm_bridge_attach(encoder, imx_ldb_ch->bridge, NULL,
+				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+	if (ret)
+		return ret;
+
+	connector = drm_bridge_connector_init(drm, encoder);
+	if (IS_ERR(connector))
+		return PTR_ERR(connector);
+
+	drm_connector_attach_encoder(connector, encoder);
 
 	return 0;
 }
···
 	{ }
 };
 MODULE_DEVICE_TABLE(of, imx_ldb_dt_ids);
-
-static int imx_ldb_panel_ddc(struct device *dev,
-		struct imx_ldb_channel *channel, struct device_node *child)
-{
-	struct device_node *ddc_node;
-	int ret;
-
-	ddc_node = of_parse_phandle(child, "ddc-i2c-bus", 0);
-	if (ddc_node) {
-		channel->ddc = of_find_i2c_adapter_by_node(ddc_node);
-		of_node_put(ddc_node);
-		if (!channel->ddc) {
-			dev_warn(dev, "failed to get ddc i2c adapter\n");
-			return -EPROBE_DEFER;
-		}
-	}
-
-	if (!channel->ddc) {
-		const void *edidp;
-		int edid_len;
-
-		/* if no DDC available, fallback to hardcoded EDID */
-		dev_dbg(dev, "no ddc available\n");
-
-		edidp = of_get_property(child, "edid", &edid_len);
-		if (edidp) {
-			channel->drm_edid = drm_edid_alloc(edidp, edid_len);
-			if (!channel->drm_edid)
-				return -ENOMEM;
-		} else if (!channel->panel) {
-			/* fallback to display-timings node */
-			ret = of_get_drm_display_mode(child,
-						      &channel->mode,
-						      &channel->bus_flags,
-						      OF_USE_NATIVE_MODE);
-			if (!ret)
-				channel->mode_valid = 1;
-		}
-	}
-	return 0;
-}
 
 static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
 {
···
 		 * The output port is port@4 with an external 4-port mux or
 		 * port@2 with the internal 2-port mux.
 		 */
-		ret = drm_of_find_panel_or_bridge(child,
-						  imx_ldb->lvds_mux ? 4 : 2, 0,
-						  &channel->panel, &channel->bridge);
-		if (ret && ret != -ENODEV)
-			goto free_child;
-
-		/* panel ddc only if there is no bridge */
-		if (!channel->bridge) {
-			ret = imx_ldb_panel_ddc(dev, channel, child);
-			if (ret)
+		channel->bridge = devm_drm_of_get_bridge(dev, child,
+						imx_ldb->lvds_mux ? 4 : 2, 0);
+		if (IS_ERR(channel->bridge)) {
+			ret = PTR_ERR(channel->bridge);
+			if (ret != -ENODEV)
 				goto free_child;
+			channel->bridge = NULL;
 		}
 
 		bus_format = of_get_bus_format(dev, child);
-		if (bus_format == -EINVAL) {
-			/*
-			 * If no bus format was specified in the device tree,
-			 * we can still get it from the connected panel later.
-			 */
-			if (channel->panel && channel->panel->funcs &&
-			    channel->panel->funcs->get_modes)
-				bus_format = 0;
-		}
+		/*
+		 * If no bus format was specified in the device tree,
+		 * we can still get it from the connected panel later.
+		 */
+		if (bus_format == -EINVAL && channel->bridge)
+			bus_format = 0;
 		if (bus_format < 0) {
 			dev_err(dev, "could not determine data mapping: %d\n",
 				bus_format);
···
 			goto free_child;
 		}
 		channel->bus_format = bus_format;
+
+		/*
+		 * legacy bridge doesn't handle bus_format, so create it after
+		 * checking the bus_format property.
+		 */
+		if (!channel->bridge) {
+			channel->bridge = devm_imx_drm_legacy_bridge(dev, child,
+								     DRM_MODE_CONNECTOR_LVDS);
+			if (IS_ERR(channel->bridge)) {
+				ret = PTR_ERR(channel->bridge);
+				goto free_child;
+			}
+		}
+
 		channel->child = child;
 	}
 
···
 
 static void imx_ldb_remove(struct platform_device *pdev)
 {
-	struct imx_ldb *imx_ldb = platform_get_drvdata(pdev);
-	int i;
-
-	for (i = 0; i < 2; i++) {
-		struct imx_ldb_channel *channel = &imx_ldb->channel[i];
-
-		drm_edid_free(channel->drm_edid);
-		i2c_put_adapter(channel->ddc);
-	}
-
 	component_del(&pdev->dev, &imx_ldb_ops);
 }
 

drivers/gpu/drm/imx/ipuv3/imx-tve.c

···
 	return 0;
 }
 
+static void imx_tve_connector_destroy(struct drm_connector *connector)
+{
+	drm_connector_unregister(connector);
+	drm_connector_cleanup(connector);
+}
+
 static const struct drm_connector_funcs imx_tve_connector_funcs = {
 	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = imx_drm_connector_destroy,
+	.destroy = imx_tve_connector_destroy,
 	.reset = drm_atomic_helper_connector_reset,
 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,

drivers/gpu/drm/imx/ipuv3/parallel-display.c

···
 #include <linux/platform_device.h>
 #include <linux/videodev2.h>
 
-#include <video/of_display_timing.h>
-
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
-#include <drm/drm_edid.h>
+#include <drm/drm_bridge_connector.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_of.h>
-#include <drm/drm_panel.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
+#include <drm/bridge/imx.h>
 
 #include "imx-drm.h"
 
 struct imx_parallel_display_encoder {
-	struct drm_connector connector;
 	struct drm_encoder encoder;
 	struct drm_bridge bridge;
 	struct imx_parallel_display *pd;
···
 
 struct imx_parallel_display {
 	struct device *dev;
-	const struct drm_edid *drm_edid;
 	u32 bus_format;
-	u32 bus_flags;
-	struct drm_display_mode mode;
-	struct drm_panel *panel;
 	struct drm_bridge *next_bridge;
 };
-
-static inline struct imx_parallel_display *con_to_imxpd(struct drm_connector *c)
-{
-	return container_of(c, struct imx_parallel_display_encoder, connector)->pd;
-}
 
 static inline struct imx_parallel_display *bridge_to_imxpd(struct drm_bridge *b)
 {
 	return container_of(b, struct imx_parallel_display_encoder, bridge)->pd;
-}
-
-static int imx_pd_connector_get_modes(struct drm_connector *connector)
-{
-	struct imx_parallel_display *imxpd = con_to_imxpd(connector);
-	struct device_node *np = imxpd->dev->of_node;
-	int num_modes;
-
-	num_modes = drm_panel_get_modes(imxpd->panel, connector);
-	if (num_modes > 0)
-		return num_modes;
-
-	if (imxpd->drm_edid) {
-		drm_edid_connector_update(connector, imxpd->drm_edid);
-		num_modes = drm_edid_connector_add_modes(connector);
-	}
-
-	if (np) {
-		struct drm_display_mode *mode = drm_mode_create(connector->dev);
-		int ret;
-
-		if (!mode)
-			return 0;
-
-		ret = of_get_drm_display_mode(np, &imxpd->mode,
-					      &imxpd->bus_flags,
-					      OF_USE_NATIVE_MODE);
-		if (ret) {
-			drm_mode_destroy(connector->dev, mode);
-			return 0;
-		}
-
-		drm_mode_copy(mode, &imxpd->mode);
-		mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-		drm_mode_probed_add(connector, mode);
-		num_modes++;
-	}
-
-	return num_modes;
-}
-
-static void imx_pd_bridge_enable(struct drm_bridge *bridge)
-{
-	struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge);
-
-	drm_panel_prepare(imxpd->panel);
-	drm_panel_enable(imxpd->panel);
-}
-
-static void imx_pd_bridge_disable(struct drm_bridge *bridge)
-{
-	struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge);
-
-	drm_panel_disable(imxpd->panel);
-	drm_panel_unprepare(imxpd->panel);
 }
 
 static const u32 imx_pd_bus_fmts[] = {
···
 {
 	struct imx_crtc_state *imx_crtc_state = to_imx_crtc_state(crtc_state);
 	struct drm_display_info *di = &conn_state->connector->display_info;
-	struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge);
 	struct drm_bridge_state *next_bridge_state = NULL;
 	struct drm_bridge *next_bridge;
 	u32 bus_flags, bus_fmt;
···
 
 	if (next_bridge_state)
 		bus_flags = next_bridge_state->input_bus_cfg.flags;
-	else if (di->num_bus_formats)
-		bus_flags = di->bus_flags;
 	else
-		bus_flags = imxpd->bus_flags;
+		bus_flags = di->bus_flags;
 
 	bus_fmt = bridge_state->input_bus_cfg.format;
 	if (!imx_pd_format_supported(bus_fmt))
···
 	return 0;
 }
 
-static const struct drm_connector_funcs imx_pd_connector_funcs = {
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = imx_drm_connector_destroy,
-	.reset = drm_atomic_helper_connector_reset,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
+static int imx_pd_bridge_attach(struct drm_bridge *bridge,
+				enum drm_bridge_attach_flags flags)
+{
+	struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge);
 
-static const struct drm_connector_helper_funcs imx_pd_connector_helper_funcs = {
-	.get_modes = imx_pd_connector_get_modes,
-};
+	return drm_bridge_attach(bridge->encoder, imxpd->next_bridge, bridge, flags);
+}
 
 static const struct drm_bridge_funcs imx_pd_bridge_funcs = {
-	.enable = imx_pd_bridge_enable,
-	.disable = imx_pd_bridge_disable,
+	.attach = imx_pd_bridge_attach,
 	.atomic_reset = drm_atomic_helper_bridge_reset,
 	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
···
 		return PTR_ERR(imxpd_encoder);
 
 	imxpd_encoder->pd = imxpd;
-	connector = &imxpd_encoder->connector;
 	encoder = &imxpd_encoder->encoder;
 	bridge = &imxpd_encoder->bridge;
 
···
 	if (ret)
 		return ret;
 
-	/* set the connector's dpms to OFF so that
-	 * drm_helper_connector_dpms() won't return
-	 * immediately since the current state is ON
-	 * at this point.
-	 */
-	connector->dpms = DRM_MODE_DPMS_OFF;
-
 	bridge->funcs = &imx_pd_bridge_funcs;
-	drm_bridge_attach(encoder, bridge, NULL, 0);
+	drm_bridge_attach(encoder, bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR);
 
-	if (imxpd->next_bridge) {
-		ret = drm_bridge_attach(encoder, imxpd->next_bridge, bridge, 0);
-		if (ret < 0)
-			return ret;
-	} else {
-		drm_connector_helper_add(connector,
-					 &imx_pd_connector_helper_funcs);
-		drm_connector_init(drm, connector, &imx_pd_connector_funcs,
-				   DRM_MODE_CONNECTOR_DPI);
+	connector = drm_bridge_connector_init(drm, encoder);
+	if (IS_ERR(connector))
+		return PTR_ERR(connector);
 
-		drm_connector_attach_encoder(connector, encoder);
-	}
+	drm_connector_attach_encoder(connector, encoder);
 
 	return 0;
 }
···
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
-	const u8 *edidp;
 	struct imx_parallel_display *imxpd;
-	int edid_len;
 	int ret;
 	u32 bus_format = 0;
 	const char *fmt;
···
 		return -ENOMEM;
 
 	/* port@1 is the output port */
-	ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel,
-					  &imxpd->next_bridge);
-	if (ret && ret != -ENODEV)
+	imxpd->next_bridge = devm_drm_of_get_bridge(dev, np, 1, 0);
+	if (imxpd->next_bridge == ERR_PTR(-ENODEV))
+		imxpd->next_bridge = devm_imx_drm_legacy_bridge(dev, np, DRM_MODE_CONNECTOR_DPI);
+	if (IS_ERR(imxpd->next_bridge)) {
+		ret = PTR_ERR(imxpd->next_bridge);
 		return ret;
-
-	edidp = of_get_property(np, "edid", &edid_len);
-	if (edidp)
-		imxpd->drm_edid = drm_edid_alloc(edidp, edid_len);
+	}
 
 	ret = of_property_read_string(np, "interface-pix-fmt", &fmt);
 	if (!ret) {
···
 
 static void imx_pd_remove(struct platform_device *pdev)
 {
-	struct imx_parallel_display *imxpd = platform_get_drvdata(pdev);
-
 	component_del(&pdev->dev, &imx_pd_ops);
-
-	drm_edid_free(imxpd->drm_edid);
 }
 
 static const struct of_device_id imx_pd_dt_ids[] = {

drivers/gpu/drm/kmb/kmb_dsi.c

···
 	}
 }
 
-static inline void
+static inline __maybe_unused void
 	set_test_mode_src_osc_freq_target_low_bits(struct kmb_dsi *kmb_dsi,
 						   u32 dphy_no,
 						   u32 freq)
···
 		       (freq & 0x7f));
 }
 
-static inline void
+static inline __maybe_unused void
 	set_test_mode_src_osc_freq_target_hi_bits(struct kmb_dsi *kmb_dsi,
 						  u32 dphy_no,
 						  u32 freq)

drivers/gpu/drm/lima/lima_sched.c

···
 	lima_pm_idle(ldev);
 
 	drm_sched_resubmit_jobs(&pipe->base);
-	drm_sched_start(&pipe->base);
+	drm_sched_start(&pipe->base, 0);
 
 	return DRM_GPU_SCHED_STAT_NOMINAL;
 }

drivers/gpu/drm/msm/Kconfig

···
 	bool "Enable DPU support in MSM DRM driver"
 	depends on DRM_MSM
 	select DRM_MSM_MDSS
+	select DRM_DISPLAY_DSC_HELPER
 	default y
 	help
 	  Compile in support for the Display Processing Unit in
···
 	depends on DRM_MSM
 	select DRM_PANEL
 	select DRM_MIPI_DSI
+	select DRM_DISPLAY_DSC_HELPER
 	default y
 	help
 	  Choose this option if you have a need for MIPI DSI connector

drivers/gpu/drm/nouveau/nouveau_connector.c

···
 	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 	struct nouveau_encoder *nv_encoder;
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
-	struct device_node *cn, *dn = pci_device_to_OF_node(pdev);
+	struct device_node *dn = pci_device_to_OF_node(pdev);
 
 	if (!dn ||
 	    !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
 	      (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
 		return NULL;
 
-	for_each_child_of_node(dn, cn) {
+	for_each_child_of_node_scoped(dn, cn) {
 		const char *name = of_get_property(cn, "name", NULL);
 		const void *edid = of_get_property(cn, "EDID", NULL);
 		int idx = name ? name[strlen(name) - 1] - 'A' : 0;
···
 		if (nv_encoder->dcb->i2c_index == idx && edid) {
 			nv_connector->edid =
 				kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
-			of_node_put(cn);
 			return nv_encoder;
 		}
 	}

drivers/gpu/drm/nouveau/nouveau_sched.c

···
 	else
 		NV_PRINTK(warn, job->cli, "Generic job timeout.\n");
 
-	drm_sched_start(sched);
+	drm_sched_start(sched, 0);
 
 	return stat;
 }

drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c

···
 	mutex_init(&tdev->iommu.mutex);
 
 	if (device_iommu_mapped(dev)) {
-		tdev->iommu.domain = iommu_domain_alloc(&platform_bus_type);
-		if (!tdev->iommu.domain)
+		tdev->iommu.domain = iommu_paging_domain_alloc(dev);
+		if (IS_ERR(tdev->iommu.domain))
 			goto error;
 
 		/*

drivers/gpu/drm/nouveau/nvkm/subdev/volt/base.c

···
 			return -ENODEV;
 		}
 
-		result = min(max(result, (s64)info.min), (s64)info.max);
+		result = clamp(result, (s64)info.min, (s64)info.max);
 
 		if (info.link != 0xff) {
 			int ret = nvkm_volt_map(volt, info.link, temp);

drivers/gpu/drm/omapdrm/dss/base.c

···
 }
 
 int omapdss_device_connect(struct dss_device *dss,
-			   struct omap_dss_device *src,
 			   struct omap_dss_device *dst)
 {
-	dev_dbg(&dss->pdev->dev, "connect(%s, %s)\n",
-		src ? dev_name(src->dev) : "NULL",
+	dev_dbg(&dss->pdev->dev, "connect(%s)\n",
 		dst ? dev_name(dst->dev) : "NULL");
 
-	if (!dst) {
-		/*
-		 * The destination is NULL when the source is connected to a
-		 * bridge instead of a DSS device. Stop here, we will attach
-		 * the bridge later when we will have a DRM encoder.
-		 */
-		return src && src->bridge ? 0 : -EINVAL;
-	}
+	if (!dst)
+		return -EINVAL;
 
 	if (omapdss_device_is_connected(dst))
 		return -EBUSY;
···
 	return 0;
 }
 
-void omapdss_device_disconnect(struct omap_dss_device *src,
+void omapdss_device_disconnect(struct dss_device *dss,
 			       struct omap_dss_device *dst)
 {
-	struct dss_device *dss = src ? src->dss : dst->dss;
-
-	dev_dbg(&dss->pdev->dev, "disconnect(%s, %s)\n",
-		src ? dev_name(src->dev) : "NULL",
+	dev_dbg(&dss->pdev->dev, "disconnect(%s)\n",
 		dst ? dev_name(dst->dev) : "NULL");
 
-	if (!dst) {
-		WARN_ON(!src->bridge);
+	if (WARN_ON(!dst))
 		return;
-	}
 
 	if (!dst->id && !omapdss_device_is_connected(dst)) {
 		WARN_ON(1);

drivers/gpu/drm/omapdrm/dss/omapdss.h

···
 void omapdss_device_put(struct omap_dss_device *dssdev);
 struct omap_dss_device *omapdss_find_device_by_node(struct device_node *node);
 int omapdss_device_connect(struct dss_device *dss,
-			   struct omap_dss_device *src,
 			   struct omap_dss_device *dst);
-void omapdss_device_disconnect(struct omap_dss_device *src,
+void omapdss_device_disconnect(struct dss_device *dss,
 			       struct omap_dss_device *dst);
 
 int omap_dss_get_num_overlay_managers(void);

drivers/gpu/drm/omapdrm/omap_dmm_tiler.c

···
 	 * earlier than the DMA finished writing the value to memory.
 	 */
 	rmb();
-	return readl(dmm->wa_dma_data);
+	return readl((__iomem void *)dmm->wa_dma_data);
 }
 
 static void dmm_write_wa(struct dmm *dmm, u32 val, u32 reg)
···
 	dma_addr_t src, dst;
 	int r;
 
-	writel(val, dmm->wa_dma_data);
+	writel(val, (__iomem void *)dmm->wa_dma_data);
 	/*
 	 * As per i878 workaround, the DMA is used to access the DMM registers.
 	 * Make sure that the writel is not moved by the compiler or the CPU, so
···
 	 */
 
 	/* read back to ensure the data is in RAM */
-	readl(&txn->last_pat->next_pa);
+	readl((__iomem void *)&txn->last_pat->next_pa);
 
 	/* write to PAT_DESCR to clear out any pending transaction */
 	dmm_write(dmm, 0x0, reg[PAT_DESCR][engine->id]);

drivers/gpu/drm/omapdrm/omap_drv.c

···
 	for (i = 0; i < priv->num_pipes; i++) {
 		struct omap_drm_pipeline *pipe = &priv->pipes[i];
 
-		omapdss_device_disconnect(NULL, pipe->output);
+		omapdss_device_disconnect(priv->dss, pipe->output);
 
 		omapdss_device_put(pipe->output);
 		pipe->output = NULL;
···
 	int r;
 
 	for_each_dss_output(output) {
-		r = omapdss_device_connect(priv->dss, NULL, output);
+		r = omapdss_device_connect(priv->dss, output);
 		if (r == -EPROBE_DEFER) {
 			omapdss_device_put(output);
 			return r;

drivers/gpu/drm/omapdrm/omap_gem.c

···
 
 	omap_obj = to_omap_bo(obj);
 
-	mutex_lock(&omap_obj->lock);
-
 	omap_obj->sgt = sgt;
 
 	if (omap_gem_sgt_is_contiguous(sgt, size)) {
···
 		pages = kcalloc(npages, sizeof(*pages), GFP_KERNEL);
 		if (!pages) {
 			omap_gem_free_object(obj);
-			obj = ERR_PTR(-ENOMEM);
-			goto done;
+			return ERR_PTR(-ENOMEM);
 		}
 
 		omap_obj->pages = pages;
 		ret = drm_prime_sg_to_page_array(sgt, pages, npages);
 		if (ret) {
 			omap_gem_free_object(obj);
-			obj = ERR_PTR(-ENOMEM);
-			goto done;
+			return ERR_PTR(-ENOMEM);
 		}
 	}
 
-done:
-	mutex_unlock(&omap_obj->lock);
 	return obj;
 }
 

drivers/gpu/drm/panel/Kconfig

···
 	depends on OF
 	depends on DRM_MIPI_DSI
 	depends on BACKLIGHT_CLASS_DEVICE
-	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
 	select DRM_DISPLAY_HELPER
 	help
 	  Say Y here if you want to enable support for LG sw43408 panel.
···
 	depends on OF
 	depends on DRM_MIPI_DSI
 	depends on BACKLIGHT_CLASS_DEVICE
-	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
 	select DRM_DISPLAY_HELPER
 	help
 	  Say Y here if you want to enable support for Raydium RM692E5-based
···
 	depends on OF
 	depends on DRM_MIPI_DSI
 	depends on BACKLIGHT_CLASS_DEVICE
-	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
 	select DRM_DISPLAY_HELPER
 	help
 	  Say Y here if you want to enable support for Visionox

drivers/gpu/drm/panel/panel-himax-hx83112a.c

···
 	msleep(50);
 }
 
-static int hx83112a_on(struct hx83112a_panel *ctx)
+static int hx83112a_on(struct mipi_dsi_device *dsi)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETEXTC, 0x83, 0x11, 0x2a);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETPOWER1,
-			       0x08, 0x28, 0x28, 0x83, 0x83, 0x4c, 0x4f, 0x33);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDISP,
-			       0x00, 0x02, 0x00, 0x90, 0x24, 0x00, 0x08, 0x19,
-			       0xea, 0x11, 0x11, 0x00, 0x11, 0xa3);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDRV,
-			       0x58, 0x68, 0x58, 0x68, 0x0f, 0xef, 0x0b, 0xc0,
-			       0x0b, 0xc0, 0x0b, 0xc0, 0x00, 0xff, 0x00, 0xff,
-			       0x00, 0x00, 0x14, 0x15, 0x00, 0x29, 0x11, 0x07,
-			       0x12, 0x00, 0x29);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x02);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDRV,
-			       0x00, 0x12, 0x12, 0x11, 0x88, 0x12, 0x12, 0x00,
-			       0x53);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x03);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDGCLUT,
-			       0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
-			       0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
-			       0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
-			       0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
-			       0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
-			       0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
-			       0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
-			       0x40);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x02);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDGCLUT,
-			       0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
-			       0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
-			       0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
-			       0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
-			       0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
-			       0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
-			       0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
-			       0x40);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x01);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDGCLUT,
-			       0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
-			       0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
-			       0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
-			       0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
-			       0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
-			       0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
-			       0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
-			       0x40);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETDGCLUT, 0x01);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETTCON,
-			       0x70, 0x00, 0x04, 0xe0, 0x33, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETPANEL, 0x08);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETPOWER2, 0x2b, 0x2b);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP0,
-			       0x80, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x08,
-			       0x08, 0x03, 0x03, 0x22, 0x18, 0x07, 0x07, 0x07,
-			       0x07, 0x32, 0x10, 0x06, 0x00, 0x06, 0x32, 0x10,
-			       0x07, 0x00, 0x07, 0x32, 0x19, 0x31, 0x09, 0x31,
-			       0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x08,
-			       0x09, 0x30, 0x00, 0x00, 0x00, 0x06, 0x0d, 0x00,
-			       0x0f);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x01);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP0,
-			       0x00, 0x00, 0x19, 0x10, 0x00, 0x0a, 0x00, 0x81);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP1,
-			       0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-			       0xc0, 0xc0, 0x18, 0x18, 0x19, 0x19, 0x18, 0x18,
-			       0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x3f, 0x3f,
-			       0x28, 0x28, 0x24, 0x24, 0x02, 0x03, 0x02, 0x03,
-			       0x00, 0x01, 0x00, 0x01, 0x31, 0x31, 0x31, 0x31,
-			       0x30, 0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2f);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP2,
-			       0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-			       0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x19, 0x19,
-			       0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x3f, 0x3f,
-			       0x24, 0x24, 0x28, 0x28, 0x01, 0x00, 0x01, 0x00,
-			       0x03, 0x02, 0x03, 0x02, 0x31, 0x31, 0x31, 0x31,
-			       0x30, 0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2f);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP3,
-			       0xaa, 0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xea,
-			       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xea, 0xab, 0xaa,
-			       0xaa, 0xaa, 0xaa, 0xea, 0xab, 0xaa, 0xaa, 0xaa);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x01);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP3,
-			       0xaa, 0x2e, 0x28, 0x00, 0x00, 0x00, 0xaa, 0x2e,
-			       0x28, 0x00, 0x00, 0x00, 0xaa, 0xee, 0xaa, 0xaa,
-			       0xaa, 0xaa, 0xaa, 0xee, 0xaa, 0xaa, 0xaa, 0xaa);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x02);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP3,
-			       0xaa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xaa, 0xff,
-			       0xff, 0xff, 0xff, 0xff);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x03);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETGIP3,
-			       0xaa, 0xaa, 0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
-			       0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xff, 0xff, 0xff,
-			       0xff, 0xff, 0xaa, 0xff, 0xff, 0xff, 0xff, 0xff);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETTP1,
-			       0x0e, 0x0e, 0x1e, 0x65, 0x1c, 0x65, 0x00, 0x50,
-			       0x20, 0x20, 0x00, 0x00, 0x02, 0x02, 0x02, 0x05,
-			       0x14, 0x14, 0x32, 0xb9, 0x23, 0xb9, 0x08);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x01);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETTP1,
-			       0x02, 0x00, 0xa8, 0x01, 0xa8, 0x0d, 0xa4, 0x0e);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x02);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETTP1,
-			       0x00, 0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00,
-			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
-			       0x00, 0x00, 0x00, 0x02, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETBANK, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_UNKNOWN1, 0xc3);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETCLOCK, 0xd1, 0xd6);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_UNKNOWN1, 0x3f);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_UNKNOWN1, 0xc6);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_SETPTBA, 0x37);
-	mipi_dsi_dcs_write_seq(dsi, HX83112A_UNKNOWN1, 0x3f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETEXTC, 0x83, 0x11, 0x2a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETPOWER1,
+				     0x08, 0x28, 0x28, 0x83, 0x83, 0x4c, 0x4f, 0x33);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETDISP,
+				     0x00, 0x02, 0x00, 0x90, 0x24, 0x00, 0x08, 0x19,
+				     0xea, 0x11, 0x11, 0x00, 0x11, 0xa3);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETDRV,
+				     0x58, 0x68, 0x58, 0x68, 0x0f, 0xef, 0x0b, 0xc0,
+				     0x0b, 0xc0, 0x0b, 0xc0, 0x00, 0xff, 0x00, 0xff,
+				     0x00, 0x00, 0x14, 0x15, 0x00, 0x29, 0x11, 0x07,
+				     0x12, 0x00, 0x29);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETDRV,
+				     0x00, 0x12, 0x12, 0x11, 0x88, 0x12, 0x12, 0x00,
+				     0x53);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x03);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETDGCLUT,
+				     0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
+				     0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
+				     0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
+				     0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
+				     0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
+				     0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
+				     0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
+				     0x40);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETDGCLUT,
+				     0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
+				     0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
+				     0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
+				     0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
+				     0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
+				     0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
+				     0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
+				     0x40);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETDGCLUT,
+				     0xff, 0xfe, 0xfb, 0xf8, 0xf4, 0xf1, 0xed, 0xe6,
+				     0xe2, 0xde, 0xdb, 0xd6, 0xd3, 0xcf, 0xca, 0xc6,
+				     0xc2, 0xbe, 0xb9, 0xb0, 0xa7, 0x9e, 0x96, 0x8d,
+				     0x84, 0x7c, 0x74, 0x6b, 0x62, 0x5a, 0x51, 0x49,
+				     0x41, 0x39, 0x31, 0x29, 0x21, 0x19, 0x12, 0x0a,
+				     0x06, 0x05, 0x02, 0x01, 0x00, 0x00, 0xc9, 0xb3,
+				     0x08, 0x0e, 0xf2, 0xe1, 0x59, 0xf4, 0x22, 0xad,
+				     0x40);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETDGCLUT, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETTCON,
+				     0x70, 0x00, 0x04, 0xe0, 0x33, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETPANEL, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETPOWER2, 0x2b, 0x2b);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETGIP0,
+				     0x80, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x08,
+				     0x08, 0x03, 0x03, 0x22, 0x18, 0x07, 0x07, 0x07,
+				     0x07, 0x32, 0x10, 0x06, 0x00, 0x06, 0x32, 0x10,
+				     0x07, 0x00, 0x07, 0x32, 0x19, 0x31, 0x09, 0x31,
+				     0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x08,
+				     0x09, 0x30, 0x00, 0x00, 0x00, 0x06, 0x0d, 0x00,
+				     0x0f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETGIP0,
+				     0x00, 0x00, 0x19, 0x10, 0x00, 0x0a, 0x00, 0x81);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETGIP1,
+				     0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+				     0xc0, 0xc0, 0x18, 0x18, 0x19, 0x19, 0x18, 0x18,
+				     0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x3f, 0x3f,
+				     0x28, 0x28, 0x24, 0x24, 0x02, 0x03, 0x02, 0x03,
+				     0x00, 0x01, 0x00, 0x01, 0x31, 0x31, 0x31, 0x31,
+				     0x30, 0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETGIP2,
+				     0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+				     0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x19, 0x19,
+				     0x40, 0x40, 0x18, 0x18, 0x18, 0x18, 0x3f, 0x3f,
+				     0x24, 0x24, 0x28, 0x28, 0x01, 0x00, 0x01, 0x00,
+				     0x03, 0x02, 0x03, 0x02, 0x31, 0x31, 0x31, 0x31,
+				     0x30, 0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETGIP3,
+				     0xaa, 0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xea,
+				     0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xea, 0xab, 0xaa,
+				     0xaa, 0xaa, 0xaa, 0xea, 0xab, 0xaa, 0xaa, 0xaa);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETGIP3,
+				     0xaa, 0x2e, 0x28, 0x00, 0x00, 0x00, 0xaa, 0x2e,
+				     0x28, 0x00, 0x00, 0x00, 0xaa, 0xee, 0xaa, 0xaa,
+				     0xaa, 0xaa, 0xaa, 0xee, 0xaa, 0xaa, 0xaa, 0xaa);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETGIP3,
+				     0xaa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xaa, 0xff,
+				     0xff, 0xff, 0xff, 0xff);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x03);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETGIP3,
+				     0xaa, 0xaa, 0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+				     0xea, 0xaa, 0xaa, 0xaa, 0xaa, 0xff, 0xff, 0xff,
+				     0xff, 0xff, 0xaa, 0xff, 0xff, 0xff, 0xff, 0xff);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETTP1,
+				     0x0e, 0x0e, 0x1e, 0x65, 0x1c, 0x65, 0x00, 0x50,
+				     0x20, 0x20, 0x00, 0x00, 0x02, 0x02, 0x02, 0x05,
+				     0x14, 0x14, 0x32, 0xb9, 0x23, 0xb9, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETTP1,
+				     0x02, 0x00, 0xa8, 0x01, 0xa8, 0x0d, 0xa4, 0x0e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETTP1,
+				     0x00, 0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00,
+				     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
+				     0x00, 0x00, 0x00, 0x02, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETBANK, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_UNKNOWN1, 0xc3);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETCLOCK, 0xd1, 0xd6);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_UNKNOWN1, 0x3f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_UNKNOWN1, 0xc6);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_SETPTBA, 0x37);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, HX83112A_UNKNOWN1, 0x3f);
 
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(150);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 150);
 
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display on: %d\n", ret);
-		return ret;
-	}
-	msleep(50);
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 50);
 
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int hx83112a_disable(struct drm_panel *panel)
 {
 	struct hx83112a_panel *ctx = to_hx83112a_panel(panel);
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
 
-	ret = mipi_dsi_dcs_set_display_off(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display off: %d\n", ret);
-		return ret;
-	}
-	msleep(20);
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 120);
 
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(120);
-
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int hx83112a_prepare(struct drm_panel *panel)
 {
 	struct hx83112a_panel *ctx = to_hx83112a_panel(panel);
-	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enable regulators: %d\n", ret);
+	if (ret < 0)
 		return ret;
-	}
 
 	hx83112a_reset(ctx);
 
-	ret = hx83112a_on(ctx);
+	ret = hx83112a_on(ctx->dsi);
 	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-		return ret;
 	}
 
-	return 0;
+	return ret;
 }
 
 static int hx83112a_unprepare(struct drm_panel *panel)

drivers/gpu/drm/panel/panel-ilitek-ili9341.c

···
  * Derived from drivers/drm/gpu/panel/panel-ilitek-ili9322.c
  * the reuse of DBI abstraction part referred from Linus's patch
  * "drm/panel: s6e63m0: Switch to DBI abstraction for SPI"
- *
- * For only-dbi part, copy from David's code (drm/tiny/ili9341.c)
- * Copyright 2018 David Lechner <[e-mail]>
  */
 
 #include <linux/backlight.h>
···
 	.get_modes = ili9341_dpi_get_modes,
 };
 
-static void ili9341_dbi_enable(struct drm_simple_display_pipe *pipe,
-			       struct drm_crtc_state *crtc_state,
-			       struct drm_plane_state *plane_state)
-{
-	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
-	struct mipi_dbi *dbi = &dbidev->dbi;
-	u8 addr_mode;
-	int ret, idx;
-
-	if (!drm_dev_enter(pipe->crtc.dev, &idx))
-		return;
-
-	ret = mipi_dbi_poweron_conditional_reset(dbidev);
-	if (ret < 0)
-		goto out_exit;
-	if (ret == 1)
-		goto out_enable;
-
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
-
-	mipi_dbi_command(dbi, ILI9341_POWERB, 0x00, 0xc1, 0x30);
-	mipi_dbi_command(dbi, ILI9341_POWER_SEQ, 0x64, 0x03, 0x12, 0x81);
-	mipi_dbi_command(dbi, ILI9341_DTCA, 0x85, 0x00, 0x78);
-	mipi_dbi_command(dbi, ILI9341_POWERA, 0x39, 0x2c, 0x00, 0x34, 0x02);
-	mipi_dbi_command(dbi, ILI9341_PRC, ILI9341_DBI_PRC_NORMAL);
-	mipi_dbi_command(dbi, ILI9341_DTCB, 0x00, 0x00);
-
-	/* Power Control */
-	mipi_dbi_command(dbi, ILI9341_POWER1, ILI9341_DBI_VCOMH_4P6V);
-	mipi_dbi_command(dbi, ILI9341_POWER2, ILI9341_DBI_PWR_2_DEFAULT);
-	/* VCOM */
-	mipi_dbi_command(dbi, ILI9341_VCOM1, ILI9341_DBI_VCOM_1_VMH_4P25V,
-			 ILI9341_DBI_VCOM_1_VML_1P5V);
-	mipi_dbi_command(dbi, ILI9341_VCOM2, ILI9341_DBI_VCOM_2_DEC_58);
-
-	/* Memory Access Control */
-	mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT,
-			 MIPI_DCS_PIXEL_FMT_16BIT);
-
-	/* Frame Rate */
-	mipi_dbi_command(dbi, ILI9341_FRC, ILI9341_DBI_FRC_DIVA & 0x03,
-			 ILI9341_DBI_FRC_RTNA & 0x1f);
-
-	/* Gamma */
-	mipi_dbi_command(dbi, ILI9341_3GAMMA_EN, 0x00);
-	mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, ILI9341_GAMMA_CURVE_1);
-	mipi_dbi_command(dbi, ILI9341_PGAMMA,
-			 0x0f, 0x31, 0x2b, 0x0c, 0x0e, 0x08, 0x4e, 0xf1,
-			 0x37, 0x07, 0x10, 0x03, 0x0e, 0x09, 0x00);
-	mipi_dbi_command(dbi, ILI9341_NGAMMA,
-			 0x00, 0x0e, 0x14, 0x03, 0x11, 0x07, 0x31, 0xc1,
-			 0x48, 0x08, 0x0f, 0x0c, 0x31, 0x36, 0x0f);
-
-	/* DDRAM */
-	mipi_dbi_command(dbi, ILI9341_ETMOD, ILI9341_DBI_EMS_GAS |
-			 ILI9341_DBI_EMS_DTS |
-			 ILI9341_DBI_EMS_GON);
-
-	/* Display */
-	mipi_dbi_command(dbi, ILI9341_DFC, 0x08, 0x82, 0x27, 0x00);
-	mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
-	msleep(100);
-
-	mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
-	msleep(100);
-
-out_enable:
-	switch (dbidev->rotation) {
-	default:
-		addr_mode = ILI9341_MADCTL_MX;
-		break;
-	case 90:
-		addr_mode = ILI9341_MADCTL_MV;
-		break;
-	case 180:
-		addr_mode = ILI9341_MADCTL_MY;
-		break;
-	case 270:
-		addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
-			    ILI9341_MADCTL_MX;
-		break;
-	}
-
-	addr_mode |= ILI9341_MADCTL_BGR;
-	mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
-	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
-	drm_info(&dbidev->drm, "Initialized display serial interface\n");
-out_exit:
-	drm_dev_exit(idx);
-}
-
-static const struct drm_simple_display_pipe_funcs ili9341_dbi_funcs = {
-	DRM_MIPI_DBI_SIMPLE_DISPLAY_PIPE_FUNCS(ili9341_dbi_enable),
-};
-
-static const struct drm_display_mode ili9341_dbi_mode = {
-	DRM_SIMPLE_MODE(240, 320, 37, 49),
-};
-
-DEFINE_DRM_GEM_DMA_FOPS(ili9341_dbi_fops);
-
-static struct drm_driver ili9341_dbi_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &ili9341_dbi_fops,
-	DRM_GEM_DMA_DRIVER_OPS_VMAP,
-	.debugfs_init		= mipi_dbi_debugfs_init,
-	.name			= "ili9341",
-	.desc			= "Ilitek ILI9341",
-	.date			= "20210716",
-	.major			= 1,
-	.minor			= 0,
-};
-
-static int ili9341_dbi_probe(struct spi_device *spi, struct gpio_desc *dc,
-			     struct gpio_desc *reset)
-{
-	struct device *dev = &spi->dev;
-	struct mipi_dbi_dev *dbidev;
-	struct mipi_dbi *dbi;
-	struct drm_device *drm;
-	struct regulator *vcc;
-	u32 rotation = 0;
-	int ret;
-
-	vcc = devm_regulator_get_optional(dev, "vcc");
-	if (IS_ERR(vcc)) {
-		dev_err(dev, "get optional vcc failed\n");
-		vcc = NULL;
-	}
-
-	dbidev = devm_drm_dev_alloc(dev, &ili9341_dbi_driver,
-				    struct mipi_dbi_dev, drm);
-	if (IS_ERR(dbidev))
-		return PTR_ERR(dbidev);
-
-	dbi = &dbidev->dbi;
-	drm = &dbidev->drm;
-	dbi->reset = reset;
-	dbidev->regulator = vcc;
-
-	drm_mode_config_init(drm);
-
-	dbidev->backlight = devm_of_find_backlight(dev);
-	if (IS_ERR(dbidev->backlight))
-		return PTR_ERR(dbidev->backlight);
-
-	device_property_read_u32(dev, "rotation", &rotation);
-
-	ret = mipi_dbi_spi_init(spi, dbi, dc);
-	if (ret)
-		return ret;
-
-	ret = mipi_dbi_dev_init(dbidev, &ili9341_dbi_funcs,
-				&ili9341_dbi_mode, rotation);
-	if (ret)
-		return ret;
-
-	drm_mode_config_reset(drm);
-
-	ret = drm_dev_register(drm, 0);
-	if (ret)
-		return ret;
-
-	spi_set_drvdata(spi, drm);
-
-	drm_fbdev_dma_setup(drm, 0);
-
-	return 0;
-}
-
 static int ili9341_dpi_probe(struct spi_device *spi, struct gpio_desc *dc,
 			     struct gpio_desc *reset)
 {
···
 	struct device *dev = &spi->dev;
 	struct gpio_desc *dc;
 	struct gpio_desc *reset;
-	const struct spi_device_id *id = spi_get_device_id(spi);
 
 	reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
 	if (IS_ERR(reset))
···
 	if (IS_ERR(dc))
 		return dev_err_probe(dev, PTR_ERR(dc), "Failed to get gpio 'dc'\n");
 
-	if (!strcmp(id->name, "sf-tc240t-9370-t"))
-		return ili9341_dpi_probe(spi, dc, reset);
-
-	if (!strcmp(id->name, "yx240qv29"))
-		return ili9341_dbi_probe(spi, dc, reset);
-
-	return -ENODEV;
+	return ili9341_dpi_probe(spi, dc, reset);
 }
 
 static void ili9341_remove(struct spi_device *spi)
 {
-	const struct spi_device_id *id = spi_get_device_id(spi);
 	struct ili9341 *ili = spi_get_drvdata(spi);
-	struct drm_device *drm = spi_get_drvdata(spi);
 
-	if (!strcmp(id->name, "sf-tc240t-9370-t")) {
-		ili9341_dpi_power_off(ili);
-		drm_panel_remove(&ili->panel);
-	} else if (!strcmp(id->name, "yx240qv29")) {
-		drm_dev_unplug(drm);
-		drm_atomic_helper_shutdown(drm);
-	}
-}
-
-static void ili9341_shutdown(struct spi_device *spi)
-{
-	const struct spi_device_id *id = spi_get_device_id(spi);
-
-	if (!strcmp(id->name, "yx240qv29"))
-		drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+	ili9341_dpi_power_off(ili);
+	drm_panel_remove(&ili->panel);
 }
 
 static const struct of_device_id ili9341_of_match[] = {
···
 		.compatible = "st,sf-tc240t-9370-t",
 		.data = &ili9341_stm32f429_disco_data,
 	},
-	{
-		/* porting from tiny/ili9341.c
-		 * for original mipi dbi compitable
-		 */
-		.compatible = "adafruit,yx240qv29",
-		.data = NULL,
-	},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ili9341_of_match);
 
 static const struct spi_device_id ili9341_id[] = {
-	{ "yx240qv29", 0 },
 	{ "sf-tc240t-9370-t", 0 },
 	{ }
 };
···
 static struct spi_driver ili9341_driver = {
 	.probe = ili9341_probe,
 	.remove = ili9341_remove,
-	.shutdown = ili9341_shutdown,
 	.id_table = ili9341_id,
 	.driver = {
 		.name = "panel-ilitek-ili9341",

drivers/gpu/drm/panel/panel-khadas-ts050.c

···
 	{0xd4, {0x04}, 0x01}, /* RGBMIPICTRL: VSYNC front porch = 4 */
 };
 
-struct khadas_ts050_panel_data ts050_panel_data = {
+static struct khadas_ts050_panel_data ts050_panel_data = {
 	.init_code = (struct khadas_ts050_panel_cmd *)ts050_init_code,
 	.len = ARRAY_SIZE(ts050_init_code)
 };
 
-struct khadas_ts050_panel_data ts050v2_panel_data = {
+static struct khadas_ts050_panel_data ts050v2_panel_data = {
 	.init_code = (struct khadas_ts050_panel_cmd *)ts050v2_init_code,
 	.len = ARRAY_SIZE(ts050v2_init_code)
 };

drivers/gpu/drm/panel/panel-novatek-nt36523.c

···
 static void nt36523_remove(struct mipi_dsi_device *dsi)
 {
 	struct panel_info *pinfo = mipi_dsi_get_drvdata(dsi);
-	int ret;
-
-	ret = mipi_dsi_detach(pinfo->dsi[0]);
-	if (ret < 0)
-		dev_err(&dsi->dev, "failed to detach from DSI0 host: %d\n", ret);
-
-	if (pinfo->desc->is_dual_dsi) {
-		ret = mipi_dsi_detach(pinfo->dsi[1]);
-		if (ret < 0)
-			dev_err(&pinfo->dsi[1]->dev, "failed to detach from DSI1 host: %d\n", ret);
-		mipi_dsi_device_unregister(pinfo->dsi[1]);
-	}
 
 	drm_panel_remove(&pinfo->panel);
 }
···
 		if (!dsi1_host)
 			return dev_err_probe(dev, -EPROBE_DEFER, "cannot get secondary DSI host\n");
 
-		pinfo->dsi[1] = mipi_dsi_device_register_full(dsi1_host, info);
+		pinfo->dsi[1] = devm_mipi_dsi_device_register_full(dev, dsi1_host, info);
 		if (IS_ERR(pinfo->dsi[1])) {
 			dev_err(dev, "cannot get secondary DSI device\n");
 			return PTR_ERR(pinfo->dsi[1]);
···
 		pinfo->dsi[i]->format = pinfo->desc->format;
 		pinfo->dsi[i]->mode_flags = pinfo->desc->mode_flags;
 
-		ret = mipi_dsi_attach(pinfo->dsi[i]);
+		ret = devm_mipi_dsi_attach(dev, pinfo->dsi[i]);
 		if (ret < 0)
 			return dev_err_probe(dev, ret, "cannot attach to DSI%d host.\n", i);
 	}

drivers/gpu/drm/panel/panel-raydium-rm69380.c

···
 static int rm69380_on(struct rm69380_panel *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi[0];
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 	if (ctx->dsi[1])
 		ctx->dsi[1]->mode_flags |= MIPI_DSI_MODE_LPM;
 
-	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd4);
-	mipi_dsi_dcs_write_seq(dsi, 0x00, 0x80);
-	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd0);
-	mipi_dsi_dcs_write_seq(dsi, 0x48, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x26);
-	mipi_dsi_dcs_write_seq(dsi, 0x75, 0x3f);
-	mipi_dsi_dcs_write_seq(dsi, 0x1d, 0x1a);
-	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28);
-	mipi_dsi_dcs_write_seq(dsi, 0xc2, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd4);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x00, 0x80);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd0);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x48, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x26);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x75, 0x3f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1d, 0x1a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc2, 0x08);
 
-	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set tear on: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
 
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(20);
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 36);
 
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display on: %d\n", ret);
-		return ret;
-	}
-	msleep(36);
-
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
-static int rm69380_off(struct rm69380_panel *ctx)
+static void rm69380_off(struct rm69380_panel *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi[0];
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
 	if (ctx->dsi[1])
 		ctx->dsi[1]->mode_flags &= ~MIPI_DSI_MODE_LPM;
 
-	ret = mipi_dsi_dcs_set_display_off(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display off: %d\n", ret);
-		return ret;
-	}
-	msleep(35);
-
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(20);
-
-	return 0;
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 35);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
 }
 
 static int rm69380_prepare(struct drm_panel *panel)
 {
 	struct rm69380_panel *ctx = to_rm69380_panel(panel);
-	struct device *dev = &ctx->dsi[0]->dev;
 	int ret;
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enable regulators: %d\n", ret);
+	if (ret < 0)
 		return ret;
-	}
 
 	rm69380_reset(ctx);
 
 	ret = rm69380_on(ctx);
 	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-		return ret;
 	}
 
-	return 0;
+	return ret;
 }
 
 static int rm69380_unprepare(struct drm_panel *panel)
 {
 	struct rm69380_panel *ctx = to_rm69380_panel(panel);
-	struct device *dev = &ctx->dsi[0]->dev;
-	int ret;
 
-	ret = rm69380_off(ctx);
-	if (ret < 0)
-		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+	rm69380_off(ctx);
 
 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);

drivers/gpu/drm/panel/panel-samsung-s6e3fa7.c

···
 	usleep_range(10000, 11000);
 }
 
-static int s6e3fa7_panel_on(struct s6e3fa7_panel *ctx)
+static int s6e3fa7_panel_on(struct mipi_dsi_device *dsi)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(120);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 120);
+	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
 
-	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set tear on: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x5a, 0x5a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4,
+				     0xbb, 0x23, 0x19, 0x3a, 0x9f, 0x0f, 0x09, 0xc0,
+				     0x00, 0xb4, 0x37, 0x70, 0x79, 0x69);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xa5, 0xa5);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
 
-	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
-	mipi_dsi_dcs_write_seq(dsi, 0xf4,
-			       0xbb, 0x23, 0x19, 0x3a, 0x9f, 0x0f, 0x09, 0xc0,
-			       0x00, 0xb4, 0x37, 0x70, 0x79, 0x69);
-	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
 
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display on: %d\n", ret);
-		return ret;
-	}
-
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int s6e3fa7_panel_prepare(struct drm_panel *panel)
 {
 	struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
-	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
 	s6e3fa7_panel_reset(ctx);
 
-	ret = s6e3fa7_panel_on(ctx);
-	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+	ret = s6e3fa7_panel_on(ctx->dsi);
+	if (ret < 0)
 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
-		return ret;
-	}
 
-	return 0;
+	return ret;
 }
 
 static int s6e3fa7_panel_unprepare(struct drm_panel *panel)
···
 {
 	struct s6e3fa7_panel *ctx = to_s6e3fa7_panel(panel);
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	ret = mipi_dsi_dcs_set_display_off(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display off: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 120);
 
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(120);
-
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static const struct drm_display_mode s6e3fa7_panel_mode = {

drivers/gpu/drm/panel/panel-sony-acx565akm.c

···
 		lcd->enabled ? "enabled" : "disabled ", status);
 
 	acx565akm_read(lcd, MIPI_DCS_GET_DISPLAY_ID, lcd->display_id, 3);
-	dev_dbg(&lcd->spi->dev, "MIPI display ID: %02x%02x%02x\n",
-		lcd->display_id[0], lcd->display_id[1], lcd->display_id[2]);
+	dev_dbg(&lcd->spi->dev, "MIPI display ID: %3phN\n", lcd->display_id);
 
 	switch (lcd->display_id[0]) {
 	case 0x10:

drivers/gpu/drm/panfrost/panfrost_drv.c

···
 /* Copyright 2019 Linaro, Ltd., Rob Herring <[e-mail]> */
 /* Copyright 2019 Collabora ltd. */
 
+#ifdef CONFIG_ARM_ARCH_TIMER
+#include <asm/arch_timer.h>
+#endif
+
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/pagemap.h>
···
 #include "panfrost_gpu.h"
 #include "panfrost_perfcnt.h"
 
+#define JOB_REQUIREMENTS (PANFROST_JD_REQ_FS | PANFROST_JD_REQ_CYCLE_COUNT)
+
 static bool unstable_ioctls;
 module_param_unsafe(unstable_ioctls, bool, 0600);
+
+static int panfrost_ioctl_query_timestamp(struct panfrost_device *pfdev,
+					  u64 *arg)
+{
+	int ret;
+
+	ret = pm_runtime_resume_and_get(pfdev->dev);
+	if (ret)
+		return ret;
+
+	panfrost_cycle_counter_get(pfdev);
+	*arg = panfrost_timestamp_read(pfdev);
+	panfrost_cycle_counter_put(pfdev);
+
+	pm_runtime_put(pfdev->dev);
+	return 0;
+}
 
 static int panfrost_ioctl_get_param(struct drm_device *ddev, void *data, struct drm_file *file)
 {
 	struct drm_panfrost_get_param *param = data;
 	struct panfrost_device *pfdev = ddev->dev_private;
+	int ret;
 
 	if (param->pad != 0)
 		return -EINVAL;
···
 		PANFROST_FEATURE_ARRAY(JS_FEATURES, js_features, 15);
 		PANFROST_FEATURE(NR_CORE_GROUPS, nr_core_groups);
 		PANFROST_FEATURE(THREAD_TLS_ALLOC, thread_tls_alloc);
+
+	case DRM_PANFROST_PARAM_SYSTEM_TIMESTAMP:
+		ret = panfrost_ioctl_query_timestamp(pfdev, &param->value);
+		if (ret)
+			return ret;
+		break;
+
+	case DRM_PANFROST_PARAM_SYSTEM_TIMESTAMP_FREQUENCY:
+#ifdef CONFIG_ARM_ARCH_TIMER
+		param->value = arch_timer_get_cntfrq();
+#else
+		param->value = 0;
+#endif
+		break;
+
 	default:
 		return -EINVAL;
 	}
···
 	if (!args->jc)
 		return -EINVAL;
 
-	if (args->requirements && args->requirements != PANFROST_JD_REQ_FS)
+	if (args->requirements & ~JOB_REQUIREMENTS)
 		return -EINVAL;
 
 	if (args->out_sync > 0) {
···
  * - 1.0 - initial interface
  * - 1.1 - adds HEAP and NOEXEC flags for CREATE_BO
  * - 1.2 - adds AFBC_FEATURES query
+ * - 1.3 - adds JD_REQ_CYCLE_COUNT job requirement for SUBMIT
+ *       - adds SYSTEM_TIMESTAMP and SYSTEM_TIMESTAMP_FREQUENCY queries
  */
 static const struct drm_driver panfrost_drm_driver = {
 	.driver_features	= DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
···
 	.desc			= "panfrost DRM",
 	.date			= "20180908",
 	.major			= 1,
-	.minor			= 2,
+	.minor			= 3,
 
 	.gem_create_object	= panfrost_gem_create_object,
 	.gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table,

drivers/gpu/drm/panfrost/panfrost_gpu.c

···
 	return ((u64)hi << 32) | lo;
 }
 
+unsigned long long panfrost_timestamp_read(struct panfrost_device *pfdev)
+{
+	u32 hi, lo;
+
+	do {
+		hi = gpu_read(pfdev, GPU_TIMESTAMP_HI);
+		lo = gpu_read(pfdev, GPU_TIMESTAMP_LO);
+	} while (hi != gpu_read(pfdev, GPU_TIMESTAMP_HI));
+
+	return ((u64)hi << 32) | lo;
+}
+
 static u64 panfrost_get_core_mask(struct panfrost_device *pfdev)
 {
 	u64 core_mask;

drivers/gpu/drm/panfrost/panfrost_gpu.h

···
 void panfrost_cycle_counter_get(struct panfrost_device *pfdev);
 void panfrost_cycle_counter_put(struct panfrost_device *pfdev);
 unsigned long long panfrost_cycle_counter_read(struct panfrost_device *pfdev);
+unsigned long long panfrost_timestamp_read(struct panfrost_device *pfdev);
 
 void panfrost_gpu_amlogic_quirk(struct panfrost_device *pfdev);
 

drivers/gpu/drm/panfrost/panfrost_job.c

···
 	struct panfrost_job *job = pfdev->jobs[slot][0];
 
 	WARN_ON(!job);
-	if (job->is_profiled) {
-		if (job->engine_usage) {
-			job->engine_usage->elapsed_ns[slot] +=
-				ktime_to_ns(ktime_sub(ktime_get(), job->start_time));
-			job->engine_usage->cycles[slot] +=
-				panfrost_cycle_counter_read(pfdev) - job->start_cycles;
-		}
-		panfrost_cycle_counter_put(job->pfdev);
+
+	if (job->is_profiled && job->engine_usage) {
+		job->engine_usage->elapsed_ns[slot] +=
+			ktime_to_ns(ktime_sub(ktime_get(), job->start_time));
+		job->engine_usage->cycles[slot] +=
+			panfrost_cycle_counter_read(pfdev) - job->start_cycles;
 	}
+
+	if (job->requirements & PANFROST_JD_REQ_CYCLE_COUNT || job->is_profiled)
+		panfrost_cycle_counter_put(pfdev);
 
 	pfdev->jobs[slot][0] = pfdev->jobs[slot][1];
 	pfdev->jobs[slot][1] = NULL;
···
 	subslot = panfrost_enqueue_job(pfdev, js, job);
 	/* Don't queue the job if a reset is in progress */
 	if (!atomic_read(&pfdev->reset.pending)) {
-		if (pfdev->profile_mode) {
+		job->is_profiled = pfdev->profile_mode;
+
+		if (job->requirements & PANFROST_JD_REQ_CYCLE_COUNT ||
+		    job->is_profiled)
 			panfrost_cycle_counter_get(pfdev);
-			job->is_profiled = true;
+
+		if (job->is_profiled) {
 			job->start_time = ktime_get();
 			job->start_cycles = panfrost_cycle_counter_read(pfdev);
 		}
···
 	spin_lock(&pfdev->js->job_lock);
 	for (i = 0; i < NUM_JOB_SLOTS; i++) {
 		for (j = 0; j < ARRAY_SIZE(pfdev->jobs[0]) && pfdev->jobs[i][j]; j++) {
-			if (pfdev->jobs[i][j]->is_profiled)
+			if (pfdev->jobs[i][j]->requirements & PANFROST_JD_REQ_CYCLE_COUNT ||
+			    pfdev->jobs[i][j]->is_profiled)
 				panfrost_cycle_counter_put(pfdev->jobs[i][j]->pfdev);
 			pm_runtime_put_noidle(pfdev->dev);
 			panfrost_devfreq_record_idle(&pfdev->pfdevfreq);
···
 
 	/* Restart the schedulers */
 	for (i = 0; i < NUM_JOB_SLOTS; i++)
-		drm_sched_start(&pfdev->js->queue[i].sched);
+		drm_sched_start(&pfdev->js->queue[i].sched, 0);
 
 	/* Re-enable job interrupts now that everything has been restarted. */
 	job_write(pfdev, JOB_INT_MASK,

drivers/gpu/drm/panfrost/panfrost_regs.h

···
 
 #define GPU_CYCLE_COUNT_LO		0x90
 #define GPU_CYCLE_COUNT_HI		0x94
+#define GPU_TIMESTAMP_LO		0x98
+#define GPU_TIMESTAMP_HI		0x9C
 
 #define GPU_THREAD_MAX_THREADS		0x0A0	/* (RO) Maximum number of threads per core */
 #define GPU_THREAD_MAX_WORKGROUP_SIZE	0x0A4	/* (RO) Maximum workgroup size */

drivers/gpu/drm/panthor/panthor_drv.c

···
 /* Copyright 2019 Linaro, Ltd., Rob Herring <[e-mail]> */
 /* Copyright 2019 Collabora ltd. */
 
+#ifdef CONFIG_ARM_ARCH_TIMER
+#include <asm/arch_timer.h>
+#endif
+
 #include <linux/list.h>
 #include <linux/module.h>
 #include <linux/of_platform.h>
···
 	_Generic(_obj_name, \
 		 PANTHOR_UOBJ_DECL(struct drm_panthor_gpu_info, tiler_present), \
 		 PANTHOR_UOBJ_DECL(struct drm_panthor_csif_info, pad), \
+		 PANTHOR_UOBJ_DECL(struct drm_panthor_timestamp_info, current_timestamp), \
 		 PANTHOR_UOBJ_DECL(struct drm_panthor_sync_op, timeline_value), \
 		 PANTHOR_UOBJ_DECL(struct drm_panthor_queue_submit, syncs), \
 		 PANTHOR_UOBJ_DECL(struct drm_panthor_queue_create, ringbuf_size), \
···
 	kvfree(ctx->jobs);
 }
 
+static int panthor_query_timestamp_info(struct panthor_device *ptdev,
+					struct drm_panthor_timestamp_info *arg)
+{
+	int ret;
+
+	ret = pm_runtime_resume_and_get(ptdev->base.dev);
+	if (ret)
+		return ret;
+
+#ifdef CONFIG_ARM_ARCH_TIMER
+	arg->timestamp_frequency = arch_timer_get_cntfrq();
+#else
+	arg->timestamp_frequency = 0;
+#endif
+	arg->current_timestamp = panthor_gpu_read_timestamp(ptdev);
+	arg->timestamp_offset = panthor_gpu_read_timestamp_offset(ptdev);
+
+	pm_runtime_put(ptdev->base.dev);
+	return 0;
+}
+
 static int panthor_ioctl_dev_query(struct drm_device *ddev, void *data, struct drm_file *file)
 {
 	struct panthor_device *ptdev = container_of(ddev, struct panthor_device, base);
 	struct drm_panthor_dev_query *args = data;
+	struct drm_panthor_timestamp_info timestamp_info;
+	int ret;
 
 	if (!args->pointer) {
 		switch (args->type) {
···
 
 		case DRM_PANTHOR_DEV_QUERY_CSIF_INFO:
 			args->size = sizeof(ptdev->csif_info);
+			return 0;
+
+		case DRM_PANTHOR_DEV_QUERY_TIMESTAMP_INFO:
+			args->size = sizeof(timestamp_info);
 			return 0;
 
 		default:
···
 
 	case DRM_PANTHOR_DEV_QUERY_CSIF_INFO:
 		return PANTHOR_UOBJ_SET(args->pointer, args->size, ptdev->csif_info);
+
+	case DRM_PANTHOR_DEV_QUERY_TIMESTAMP_INFO:
+		ret = panthor_query_timestamp_info(ptdev, &timestamp_info);
+
+		if (ret)
+			return ret;
+
+		return PANTHOR_UOBJ_SET(args->pointer, args->size, timestamp_info);
 
 	default:
 		return -EINVAL;
···
 /*
  * PanCSF driver version:
  * - 1.0 - initial interface
+ * - 1.1 - adds DEV_QUERY_TIMESTAMP_INFO query
  */
 static const struct drm_driver panthor_drm_driver = {
 	.driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ |
···
 	.desc = "Panthor DRM driver",
 	.date = "20230801",
 	.major = 1,
-	.minor = 0,
+	.minor = 1,
 
 	.gem_create_object = panthor_gem_create_object,
 	.gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table,

drivers/gpu/drm/panthor/panthor_fw.c

···
 
 	/** @CSF_FW_BINARY_ENTRY_TYPE_TIMELINE_METADATA: Timeline metadata interface. */
 	CSF_FW_BINARY_ENTRY_TYPE_TIMELINE_METADATA = 4,
+
+	/**
+	 * @CSF_FW_BINARY_ENTRY_TYPE_BUILD_INFO_METADATA: Metadata about how
+	 * the FW binary was built.
+	 */
+	CSF_FW_BINARY_ENTRY_TYPE_BUILD_INFO_METADATA = 6
 };
 
 #define CSF_FW_BINARY_ENTRY_TYPE(ehdr)					((ehdr) & 0xff)
···
 		/** @end: End offset in the FW binary. */
 		u32 end;
 	} data;
+};
+
+struct panthor_fw_build_info_hdr {
+	/** @meta_start: Offset of the build info data in the FW binary */
+	u32 meta_start;
+	/** @meta_size: Size of the build info data in the FW binary */
+	u32 meta_size;
 };
 
 /**
···
 	return 0;
 }
 
+static int panthor_fw_read_build_info(struct panthor_device *ptdev,
+				      const struct firmware *fw,
+				      struct panthor_fw_binary_iter *iter,
+				      u32 ehdr)
+{
+	struct panthor_fw_build_info_hdr hdr;
+	char header[9];
+	const char git_sha_header[sizeof(header)] = "git_sha: ";
+	int ret;
+
+	ret = panthor_fw_binary_iter_read(ptdev, iter, &hdr, sizeof(hdr));
+	if (ret)
+		return ret;
+
+	if (hdr.meta_start > fw->size ||
+	    hdr.meta_start + hdr.meta_size > fw->size) {
+		drm_err(&ptdev->base, "Firmware build info corrupt\n");
+		/* We don't need the build info, so continue */
+		return 0;
+	}
+
+	if (memcmp(git_sha_header, fw->data + hdr.meta_start,
+		   sizeof(git_sha_header))) {
+		/* Not the expected header, this isn't metadata we understand */
+		return 0;
+	}
+
+	/* Check that the git SHA is NULL terminated as expected */
+	if (fw->data[hdr.meta_start + hdr.meta_size - 1] != '\0') {
+		drm_warn(&ptdev->base, "Firmware's git sha is not NULL terminated\n");
+		/* Don't treat as fatal */
+		return 0;
+	}
+
+	drm_info(&ptdev->base, "Firmware git sha: %s\n",
+		 fw->data + hdr.meta_start + sizeof(git_sha_header));
+
+	return 0;
+}
+
 static void
 panthor_reload_fw_sections(struct panthor_device *ptdev, bool full_reload)
 {
···
 	switch (CSF_FW_BINARY_ENTRY_TYPE(ehdr)) {
 	case CSF_FW_BINARY_ENTRY_TYPE_IFACE:
 		return panthor_fw_load_section_entry(ptdev, fw, &eiter, ehdr);
+	case CSF_FW_BINARY_ENTRY_TYPE_BUILD_INFO_METADATA:
+		return panthor_fw_read_build_info(ptdev, fw, &eiter, ehdr);
 
 	/* FIXME: handle those entry types? */
 	case CSF_FW_BINARY_ENTRY_TYPE_CONFIG:
···
 			return ret;
 	}
 
-	drm_info(&ptdev->base, "CSF FW v%d.%d.%d, Features %#x Instrumentation features %#x",
+	drm_info(&ptdev->base, "CSF FW using interface v%d.%d.%d, Features %#x Instrumentation features %#x",
 		 CSF_IFACE_VERSION_MAJOR(glb_iface->control->version),
 		 CSF_IFACE_VERSION_MINOR(glb_iface->control->version),
 		 CSF_IFACE_VERSION_PATCH(glb_iface->control->version),

drivers/gpu/drm/panthor/panthor_gpu.c

···
 	panthor_gpu_irq_resume(&ptdev->gpu->irq, GPU_INTERRUPTS_MASK);
 	panthor_gpu_l2_power_on(ptdev);
 }
+
+/**
+ * panthor_gpu_read_64bit_counter() - Read a 64-bit counter at a given offset.
+ * @ptdev: Device.
+ * @reg: The offset of the register to read.
+ *
+ * Return: The counter value.
+ */
+static u64
+panthor_gpu_read_64bit_counter(struct panthor_device *ptdev, u32 reg)
+{
+	u32 hi, lo;
+
+	do {
+		hi = gpu_read(ptdev, reg + 0x4);
+		lo = gpu_read(ptdev, reg);
+	} while (hi != gpu_read(ptdev, reg + 0x4));
+
+	return ((u64)hi << 32) | lo;
+}
+
+/**
+ * panthor_gpu_read_timestamp() - Read the timestamp register.
+ * @ptdev: Device.
+ *
+ * Return: The GPU timestamp value.
+ */
+u64 panthor_gpu_read_timestamp(struct panthor_device *ptdev)
+{
+	return panthor_gpu_read_64bit_counter(ptdev, GPU_TIMESTAMP_LO);
+}
+
+/**
+ * panthor_gpu_read_timestamp_offset() - Read the timestamp offset register.
+ * @ptdev: Device.
+ *
+ * Return: The GPU timestamp offset value.
+ */
+u64 panthor_gpu_read_timestamp_offset(struct panthor_device *ptdev)
+{
+	u32 hi, lo;
+
+	hi = gpu_read(ptdev, GPU_TIMESTAMP_OFFSET_HI);
+	lo = gpu_read(ptdev, GPU_TIMESTAMP_OFFSET_LO);
+
+	return ((u64)hi << 32) | lo;
+}

drivers/gpu/drm/panthor/panthor_gpu.h

···
 #ifndef __PANTHOR_GPU_H__
 #define __PANTHOR_GPU_H__
 
+#include <linux/types.h>
+
 struct panthor_device;
 
 int panthor_gpu_init(struct panthor_device *ptdev);
···
 int panthor_gpu_flush_caches(struct panthor_device *ptdev,
 			     u32 l2, u32 lsc, u32 other);
 int panthor_gpu_soft_reset(struct panthor_device *ptdev);
+u64 panthor_gpu_read_timestamp(struct panthor_device *ptdev);
+u64 panthor_gpu_read_timestamp_offset(struct panthor_device *ptdev);
 
 #endif

drivers/gpu/drm/panthor/panthor_mmu.c

···
 
 static void panthor_vm_start(struct panthor_vm *vm)
 {
-	drm_sched_start(&vm->sched);
+	drm_sched_start(&vm->sched, 0);
 }
 
 /**
···
 	 * which passes iova as an unsigned long. Patch the mmu_features to reflect this
 	 * limitation.
 	 */
-	if (sizeof(unsigned long) * 8 < va_bits) {
+	if (va_bits > BITS_PER_LONG) {
 		ptdev->gpu_info.mmu_features &= ~GENMASK(7, 0);
-		ptdev->gpu_info.mmu_features |= sizeof(unsigned long) * 8;
+		ptdev->gpu_info.mmu_features |= BITS_PER_LONG;
 	}
 
 	return drmm_add_action_or_reset(&ptdev->base, panthor_mmu_release_wq, mmu->vm.wq);

drivers/gpu/drm/panthor/panthor_sched.c

···
 	list_for_each_entry(job, &queue->scheduler.pending_list, base.list)
 		job->base.s_fence->parent = dma_fence_get(job->done_fence);
 
-	drm_sched_start(&queue->scheduler);
+	drm_sched_start(&queue->scheduler, 0);
 }
 
 static void panthor_group_stop(struct panthor_group *group)

drivers/gpu/drm/rockchip/cdn-dp-reg.h

···
 #define SOURCE_PIF_PKT_ALLOC_WR_EN	0x30830
 #define SOURCE_PIF_SW_RESET		0x30834
 
-/* bellow registers need access by mailbox */
+/* below registers need access by mailbox */
 /* source car addr */
 #define SOURCE_HDTX_CAR			0x0900
 #define SOURCE_DPTX_CAR			0x0904

drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c

···
 	struct rockchip_encoder encoder;
 	const struct rockchip_hdmi_chip_data *chip_data;
 	const struct dw_hdmi_plat_data *plat_data;
+	struct clk *hdmiphy_clk;
 	struct clk *ref_clk;
 	struct clk *grf_clk;
 	struct dw_hdmi *hdmi;
···
 
 static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
 	{
-		27000000, {
-			{ 0x00b3, 0x0000},
-			{ 0x2153, 0x0000},
-			{ 0x40f3, 0x0000}
+		30666000, {
+			{ 0x00b3, 0x0000 },
+			{ 0x2153, 0x0000 },
+			{ 0x40f3, 0x0000 },
 		},
 	}, {
-		36000000, {
-			{ 0x00b3, 0x0000},
-			{ 0x2153, 0x0000},
-			{ 0x40f3, 0x0000}
+		36800000, {
+			{ 0x00b3, 0x0000 },
+			{ 0x2153, 0x0000 },
+			{ 0x40a2, 0x0001 },
 		},
 	}, {
-		40000000, {
-			{ 0x00b3, 0x0000},
-			{ 0x2153, 0x0000},
-			{ 0x40f3, 0x0000}
+		46000000, {
+			{ 0x00b3, 0x0000 },
+			{ 0x2142, 0x0001 },
+			{ 0x40a2, 0x0001 },
 		},
 	}, {
-		54000000, {
-			{ 0x0072, 0x0001},
-			{ 0x2142, 0x0001},
-			{ 0x40a2, 0x0001},
+		61333000, {
+			{ 0x0072, 0x0001 },
+			{ 0x2142, 0x0001 },
+			{ 0x40a2, 0x0001 },
 		},
 	}, {
-		65000000, {
-			{ 0x0072, 0x0001},
-			{ 0x2142, 0x0001},
-			{ 0x40a2, 0x0001},
+		73600000, {
+			{ 0x0072, 0x0001 },
+			{ 0x2142, 0x0001 },
+			{ 0x4061, 0x0002 },
 		},
 	}, {
-		66000000, {
-			{ 0x013e, 0x0003},
-			{ 0x217e, 0x0002},
-			{ 0x4061, 0x0002}
+		92000000, {
+			{ 0x0072, 0x0001 },
+			{ 0x2145, 0x0002 },
+			{ 0x4061, 0x0002 },
 		},
 	}, {
-		74250000, {
-			{ 0x0072, 0x0001},
-			{ 0x2145, 0x0002},
-			{ 0x4061, 0x0002}
+		122666000, {
+			{ 0x0051, 0x0002 },
+			{ 0x2145, 0x0002 },
+			{ 0x4061, 0x0002 },
 		},
 	}, {
-		83500000, {
-			{ 0x0072, 0x0001},
+		147200000, {
+			{ 0x0051, 0x0002 },
+			{ 0x2145, 0x0002 },
+			{ 0x4064, 0x0003 },
 		},
 	}, {
-		108000000, {
-			{ 0x0051, 0x0002},
-			{ 0x2145, 0x0002},
-			{ 0x4061, 0x0002}
+		184000000, {
+			{ 0x0051, 0x0002 },
+			{ 0x214c, 0x0003 },
+			{ 0x4064, 0x0003 },
 		},
 	}, {
-		106500000, {
-			{ 0x0051, 0x0002},
-			{ 0x2145, 0x0002},
-			{ 0x4061, 0x0002}
+		226666000, {
+			{ 0x0040, 0x0003 },
+			{ 0x214c, 0x0003 },
+			{ 0x4064, 0x0003 },
 		},
 	}, {
-		146250000, {
-			{ 0x0051, 0x0002},
-			{ 0x2145, 0x0002},
-			{ 0x4061, 0x0002}
-		},
-	}, {
-		148500000, {
-			{ 0x0051, 0x0003},
-			{ 0x214c, 0x0003},
-			{ 0x4064, 0x0003}
+		272000000, {
+			{ 0x0040, 0x0003 },
+			{ 0x214c, 0x0003 },
+			{ 0x5a64, 0x0003 },
 		},
 	}, {
 		340000000, {
···
 			{ 0x5a64, 0x0003 },
 		},
 	}, {
+		600000000, {
+			{ 0x1a40, 0x0003 },
+			{ 0x3b4c, 0x0003 },
+			{ 0x5a64, 0x0003 },
+		},
+	}, {
 		~0UL, {
-			{ 0x00a0, 0x000a },
-			{ 0x2001, 0x000f },
-			{ 0x4002, 0x000f },
+			{ 0x0000, 0x0000 },
+			{ 0x0000, 0x0000 },
+			{ 0x0000, 0x0000 },
 		},
 	}
 };
···
 static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
 	/*      pixelclk    bpp8    bpp10   bpp12 */
 	{
-		40000000,  { 0x0018, 0x0018, 0x0018 },
-	}, {
-		65000000,  { 0x0028, 0x0028, 0x0028 },
-	}, {
-		66000000,  { 0x0038, 0x0038, 0x0038 },
-	}, {
-		74250000,  { 0x0028, 0x0038, 0x0038 },
-	}, {
-		83500000,  { 0x0028, 0x0038, 0x0038 },
-	}, {
-		146250000, { 0x0038, 0x0038, 0x0038 },
-	}, {
-		148500000, { 0x0000, 0x0038, 0x0038 },
-	}, {
 		600000000, { 0x0000, 0x0000, 0x0000 },
 	}, {
-		~0UL,      { 0x0000, 0x0000, 0x0000},
+		~0UL,      { 0x0000, 0x0000, 0x0000 },
 	}
 };
 
 static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
 	/*pixelclk   symbol   term   vlev*/
 	{ 74250000,  0x8009, 0x0004, 0x0272},
-	{ 148500000, 0x802b, 0x0004, 0x028d},
+	{ 165000000, 0x802b, 0x0004, 0x0209},
 	{ 297000000, 0x8039, 0x0005, 0x028d},
+	{ 594000000, 0x8039, 0x0000, 0x019d},
 	{ ~0UL,	     0x0000, 0x0000, 0x0000}
 };
 
···
 			    const struct drm_display_mode *mode)
 {
 	struct rockchip_hdmi *hdmi = data;
-	const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
 	int pclk = mode->clock * 1000;
-	bool exact_match = hdmi->plat_data->phy_force_vendor;
-	int i;
 
 	if (hdmi->chip_data->max_tmds_clock &&
 	    mode->clock > hdmi->chip_data->max_tmds_clock)
···
 	if (hdmi->ref_clk) {
 		int rpclk = clk_round_rate(hdmi->ref_clk, pclk);
 
-		if (abs(rpclk - pclk) > pclk / 1000)
+		if (rpclk < 0 || abs(rpclk - pclk) > pclk / 1000)
 			return MODE_NOCLOCK;
 	}
 
-	for (i = 0; mpll_cfg[i].mpixelclock != (~0UL); i++) {
-		/*
-		 * For vendor specific phys force an exact match of the pixelclock
-		 * to preserve the original behaviour of the driver.
-		 */
-		if (exact_match && pclk == mpll_cfg[i].mpixelclock)
-			return MODE_OK;
-		/*
-		 * The Synopsys phy can work with pixelclocks up to the value given
-		 * in the corresponding mpll_cfg entry.
-		 */
-		if (!exact_match && pclk <= mpll_cfg[i].mpixelclock)
-			return MODE_OK;
+	if (hdmi->hdmiphy_clk) {
+		int rpclk = clk_round_rate(hdmi->hdmiphy_clk, pclk);
+
+		if (rpclk < 0 || abs(rpclk - pclk) > pclk / 1000)
+			return MODE_NOCLOCK;
 	}
 
-	return MODE_BAD;
+	return MODE_OK;
 }
 
 static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
···
 	.lcdsel_grf_reg = RK3399_GRF_SOC_CON20,
 	.lcdsel_big = HIWORD_UPDATE(0, RK3399_HDMI_LCDC_SEL),
 	.lcdsel_lit = HIWORD_UPDATE(RK3399_HDMI_LCDC_SEL, RK3399_HDMI_LCDC_SEL),
-	.max_tmds_clock = 340000,
+	.max_tmds_clock = 594000,
 };
 
 static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
···
 
 static struct rockchip_hdmi_chip_data rk3568_chip_data = {
 	.lcdsel_grf_reg = -1,
-	.max_tmds_clock = 340000,
+	.max_tmds_clock = 594000,
 };
 
 static const struct dw_hdmi_plat_data rk3568_hdmi_drv_data = {
···
 		if (ret != -EPROBE_DEFER)
 			drm_err(hdmi, "failed to get phy\n");
 		return ret;
+	}
+
+	if (hdmi->phy) {
+		struct of_phandle_args clkspec;
+
+		clkspec.np = hdmi->phy->dev.of_node;
+		hdmi->hdmiphy_clk = of_clk_get_from_provider(&clkspec);
+		if (IS_ERR(hdmi->hdmiphy_clk))
+			hdmi->hdmiphy_clk = NULL;
 	}
 
 	if (hdmi->chip_data == &rk3568_chip_data) {

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

···
 		device_link_del(link);
 }
 
+/* list of preferred vop devices */
+static const char *const rockchip_drm_match_preferred[] = {
+	"rockchip,rk3399-vop-big",
+	NULL,
+};
+
 static struct component_match *rockchip_drm_match_add(struct device *dev)
 {
 	struct component_match *match = NULL;
+	struct device_node *port;
 	int i;
+
+	/* add preferred vop device match before adding driver device matches */
+	for (i = 0; ; i++) {
+		port = of_parse_phandle(dev->of_node, "ports", i);
+		if (!port)
+			break;
+
+		if (of_device_is_available(port->parent) &&
+		    of_device_compatible_match(port->parent,
+					       rockchip_drm_match_preferred))
+			drm_of_component_match_add(dev, &match,
+						   component_compare_of,
+						   port->parent);
+
+		of_node_put(port);
+	}
 
 	for (i = 0; i < num_rockchip_sub_drivers; i++) {
 		struct platform_driver *drv = rockchip_sub_drivers[i];

drivers/gpu/drm/scheduler/sched_main.c

···
  * drm_sched_start - recover jobs after a reset
  *
  * @sched: scheduler instance
+ * @errno: error to set on the pending fences
  *
  */
-void drm_sched_start(struct drm_gpu_scheduler *sched)
+void drm_sched_start(struct drm_gpu_scheduler *sched, int errno)
 {
 	struct drm_sched_job *s_job, *tmp;
 
···
 		atomic_add(s_job->credits, &sched->credit_count);
 
 		if (!fence) {
-			drm_sched_job_done(s_job, -ECANCELED);
+			drm_sched_job_done(s_job, errno ?: -ECANCELED);
 			continue;
 		}
 
 		if (dma_fence_add_callback(fence, &s_job->cb,
 					   drm_sched_job_done_cb))
-			drm_sched_job_done(s_job, fence->error);
+			drm_sched_job_done(s_job, fence->error ?: errno);
 	}
 
 	drm_sched_start_timeout_unlocked(sched);

drivers/gpu/drm/tegra/gem.c

···
 	/*
 	 * Imported buffers need special treatment to satisfy the semantics of DMA-BUF.
 	 */
-	if (gem->import_attach) {
-		struct dma_buf *buf = gem->import_attach->dmabuf;
+	if (obj->dma_buf) {
+		struct dma_buf *buf = obj->dma_buf;
 
 		map->attach = dma_buf_attach(buf, dev);
 		if (IS_ERR(map->attach)) {
···
 	if (obj->vaddr)
 		return obj->vaddr;
 
-	if (obj->gem.import_attach) {
-		ret = dma_buf_vmap_unlocked(obj->gem.import_attach->dmabuf, &map);
+	if (obj->dma_buf) {
+		ret = dma_buf_vmap_unlocked(obj->dma_buf, &map);
 		if (ret < 0)
 			return ERR_PTR(ret);
 
···
 	if (obj->vaddr)
 		return;
 
-	if (obj->gem.import_attach)
-		return dma_buf_vunmap_unlocked(obj->gem.import_attach->dmabuf, &map);
+	if (obj->dma_buf)
+		return dma_buf_vunmap_unlocked(obj->dma_buf, &map);
 
 	vunmap(addr);
 }
···
 	if (IS_ERR(bo))
 		return bo;
 
-	attach = dma_buf_attach(buf, drm->dev);
-	if (IS_ERR(attach)) {
-		err = PTR_ERR(attach);
-		goto free;
-	}
-
-	get_dma_buf(buf);
-
-	bo->sgt = dma_buf_map_attachment_unlocked(attach, DMA_TO_DEVICE);
-	if (IS_ERR(bo->sgt)) {
-		err = PTR_ERR(bo->sgt);
-		goto detach;
-	}
-
+	/*
+	 * If we need to use IOMMU API to map the dma-buf into the internally managed
+	 * domain, map it first to the DRM device to get an sgt.
+	 */
 	if (tegra->domain) {
+		attach = dma_buf_attach(buf, drm->dev);
+		if (IS_ERR(attach)) {
+			err = PTR_ERR(attach);
+			goto free;
+		}
+
+		bo->sgt = dma_buf_map_attachment_unlocked(attach, DMA_TO_DEVICE);
+		if (IS_ERR(bo->sgt)) {
+			err = PTR_ERR(bo->sgt);
+			goto detach;
+		}
+
 		err = tegra_bo_iommu_map(tegra, bo);
 		if (err < 0)
 			goto detach;
+
+		bo->gem.import_attach = attach;
 	}
 
-	bo->gem.import_attach = attach;
+	get_dma_buf(buf);
+	bo->dma_buf = buf;
 
 	return bo;
 
···
 				dev_name(mapping->dev));
 	}
 
-	if (tegra->domain)
+	if (tegra->domain) {
 		tegra_bo_iommu_unmap(tegra, bo);
 
-	if (gem->import_attach) {
-		dma_buf_unmap_attachment_unlocked(gem->import_attach, bo->sgt,
-						  DMA_TO_DEVICE);
-		drm_prime_gem_destroy(gem, NULL);
-	} else {
-		tegra_bo_free(gem->dev, bo);
+		if (gem->import_attach) {
+			dma_buf_unmap_attachment_unlocked(gem->import_attach, bo->sgt,
+							  DMA_TO_DEVICE);
+			dma_buf_detach(gem->import_attach->dmabuf, gem->import_attach);
+		}
 	}
+
+	tegra_bo_free(gem->dev, bo);
+
+	if (bo->dma_buf)
+		dma_buf_put(bo->dma_buf);
 
 	drm_gem_object_release(gem);
 	kfree(bo);

drivers/gpu/drm/tegra/gem.h

···
 	enum tegra_bo_sector_layout sector_layout;
 };
 
+/*
+ * How memory is referenced within a tegra_bo:
+ *
+ * Buffer source  | Mapping API(*)  | Fields
+ * ---------------+-----------------+---------------
+ * Allocated here | DMA API         | iova (IOVA mapped to drm->dev), vaddr (CPU VA)
+ *
+ * Allocated here | IOMMU API       | pages/num_pages (Phys. memory), sgt (Mapped to drm->dev),
+ *                                  | iova/size (Mapped to domain)
+ *
+ * Imported       | DMA API         | dma_buf (Imported dma_buf)
+ *
+ * Imported       | IOMMU API       | dma_buf (Imported dma_buf),
+ *                                  | gem->import_attach (Attachment on drm->dev),
+ *                                  | sgt (Mapped to drm->dev)
+ *                                  | iova/size (Mapped to domain)
+ *
+ * (*) If tegra->domain is set, i.e. TegraDRM IOMMU domain is directly managed through IOMMU API,
+ *     this is IOMMU API. Otherwise DMA API.
+ */
 struct tegra_bo {
 	struct drm_gem_object gem;
 	struct host1x_bo base;
···
 	struct sg_table *sgt;
 	dma_addr_t iova;
 	void *vaddr;
+	struct dma_buf *dma_buf;
 
 	struct drm_mm_node *mm;
 	unsigned long num_pages;

drivers/gpu/drm/tegra/gr3d.c

···
 	unsigned int nclocks;
 	struct reset_control_bulk_data resets[RST_GR3D_MAX];
 	unsigned int nresets;
-	struct dev_pm_domain_list *pd_list;
 
 	DECLARE_BITMAP(addr_regs, GR3D_NUM_REGS);
 };
···
 	return 0;
 }
 
+static void gr3d_del_link(void *link)
+{
+	device_link_del(link);
+}
+
 static int gr3d_init_power(struct device *dev, struct gr3d *gr3d)
 {
-	struct dev_pm_domain_attach_data pd_data = {
-		.pd_names = (const char *[]) { "3d0", "3d1" },
-		.num_pd_names = 2,
-	};
+	static const char * const opp_genpd_names[] = { "3d0", "3d1", NULL };
+	const u32 link_flags = DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME;
+	struct device **opp_virt_devs, *pd_dev;
+	struct device_link *link;
+	unsigned int i;
 	int err;
 
 	err = of_count_phandle_with_args(dev->of_node, "power-domains",
···
 	if (dev->pm_domain)
 		return 0;
 
-	err = dev_pm_domain_attach_list(dev, &pd_data, &gr3d->pd_list);
-	if (err < 0)
+	err = devm_pm_opp_attach_genpd(dev, opp_genpd_names, &opp_virt_devs);
+	if (err)
 		return err;
+
+	for (i = 0; opp_genpd_names[i]; i++) {
+		pd_dev = opp_virt_devs[i];
+		if (!pd_dev) {
+			dev_err(dev, "failed to get %s power domain\n",
+				opp_genpd_names[i]);
+			return -EINVAL;
+		}
+
+		link = device_link_add(dev, pd_dev, link_flags);
+		if (!link) {
+			dev_err(dev, "failed to link to %s\n", dev_name(pd_dev));
+			return -EINVAL;
+		}
+
+		err = devm_add_action_or_reset(dev, gr3d_del_link, link);
+		if (err)
+			return err;
+	}
 
 	return 0;
 }
···
 
 	err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
 	if (err)
-		goto err;
+		return err;
 
 	err = host1x_client_register(&gr3d->client.base);
 	if (err < 0) {
 		dev_err(&pdev->dev, "failed to register host1x client: %d\n",
 			err);
-		goto err;
+		return err;
 	}
 
 	/* initialize address register map */
···
 		set_bit(gr3d_addr_regs[i], gr3d->addr_regs);
 
 	return 0;
-err:
-	dev_pm_domain_detach_list(gr3d->pd_list);
-	return err;
 }
 
 static void gr3d_remove(struct platform_device *pdev)
···
 
 	pm_runtime_disable(&pdev->dev);
 	host1x_client_unregister(&gr3d->client.base);
-	dev_pm_domain_detach_list(gr3d->pd_list);
 }
 
 static int __maybe_unused gr3d_runtime_suspend(struct device *dev)

drivers/gpu/drm/tegra/hdmi.c

···
 
 static void tegra_hdmi_setup_audio_fs_tables(struct tegra_hdmi *hdmi)
 {
-	const unsigned int freqs[] = {
+	static const unsigned int freqs[] = {
 		32000, 44100, 48000, 88200, 96000, 176400, 192000
 	};
 	unsigned int i;

drivers/gpu/drm/tests/drm_framebuffer_test.c

···
  * Copyright (c) 2022 Maíra Canal <[e-mail]>
  */
 
+#include <kunit/device.h>
 #include <kunit/test.h>
 
 #include <drm/drm_device.h>
+#include <drm/drm_drv.h>
 #include <drm/drm_mode.h>
+#include <drm/drm_framebuffer.h>
 #include <drm/drm_fourcc.h>
+#include <drm/drm_kunit_helpers.h>
 #include <drm/drm_print.h>
 
 #include "../drm_crtc_internal.h"
···
 #define MAX_WIDTH 4096
 #define MIN_HEIGHT 4
 #define MAX_HEIGHT 4096
+
+#define DRM_MODE_FB_INVALID BIT(2)
 
 struct drm_framebuffer_test {
 	int buffer_created;
···
 	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
 		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 },
 		 .pitches = { 4 * MAX_WIDTH, 0, 0 },
+	}
+},
+
+/*
+ * All entries in members that represents per-plane values (@modifier, @handles,
+ * @pitches and @offsets) must be zero when unused.
+ */
+{ .buffer_created = 0, .name = "ABGR8888 Buffer offset for inexistent plane",
+	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
+		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, UINT_MAX / 2, 0 },
+		 .pitches = { 4 * MAX_WIDTH, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS,
+	}
+},
+
+{ .buffer_created = 0, .name = "ABGR8888 Invalid flag",
+	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888,
+		 .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 },
+		 .pitches = { 4 * MAX_WIDTH, 0, 0 }, .flags = DRM_MODE_FB_INVALID,
 	}
 },
 { .buffer_created = 1, .name = "ABGR8888 Set DRM_MODE_FB_MODIFIERS without modifiers",
···
 		 .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) },
 	}
 },
+{ .buffer_created = 0, .name = "YUV420_10BIT Invalid modifier(DRM_FORMAT_MOD_LINEAR)",
+	.cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YUV420_10BIT,
+		 .handles = { 1, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS,
+		 .modifier = { DRM_FORMAT_MOD_LINEAR, 0, 0 },
+		 .pitches = { MAX_WIDTH, 0, 0 },
+	}
+},
 { .buffer_created = 1, .name = "X0L2 Normal sizes",
 	.cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_X0L2,
 		 .handles = { 1, 0, 0 }, .pitches = { 1200, 0, 0 }
···
 },
 };
 
+/*
+ * This struct is intended to provide a way to mocked functions communicate
+ * with the outer test when it can't be achieved by using its return value. In
+ * this way, the functions that receive the mocked drm_device, for example, can
+ * grab a reference to this and actually return something to be used on some
+ * expectation.
+ */
+struct drm_framebuffer_test_priv {
+	struct drm_device dev;
+	bool buffer_created;
+	bool buffer_freed;
+};
+
 static struct drm_framebuffer *fb_create_mock(struct drm_device *dev,
 					      struct drm_file *file_priv,
 					      const struct drm_mode_fb_cmd2 *mode_cmd)
 {
-	int *buffer_created = dev->dev_private;
-	*buffer_created = 1;
+	struct drm_framebuffer_test_priv *priv = container_of(dev, typeof(*priv), dev);
+
+	priv->buffer_created = true;
 	return ERR_PTR(-EINVAL);
 }
 
···
 
 static int drm_framebuffer_test_init(struct kunit *test)
 {
-	struct drm_device *mock;
+	struct device *parent;
+	struct drm_framebuffer_test_priv *priv;
+	struct drm_device *dev;
 
-	mock = kunit_kzalloc(test, sizeof(*mock), GFP_KERNEL);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, mock);
+	parent = drm_kunit_helper_alloc_device(test);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
 
-	mock->mode_config.min_width = MIN_WIDTH;
-	mock->mode_config.max_width = MAX_WIDTH;
-	mock->mode_config.min_height = MIN_HEIGHT;
-	mock->mode_config.max_height = MAX_HEIGHT;
-	mock->mode_config.funcs = &mock_config_funcs;
+	priv = drm_kunit_helper_alloc_drm_device(test, parent, typeof(*priv),
+						 dev, 0);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
+	dev = &priv->dev;
 
-	test->priv = mock;
+	dev->mode_config.min_width = MIN_WIDTH;
+	dev->mode_config.max_width = MAX_WIDTH;
+	dev->mode_config.min_height = MIN_HEIGHT;
+	dev->mode_config.max_height = MAX_HEIGHT;
+	dev->mode_config.funcs = &mock_config_funcs;
+
+	test->priv = priv;
 	return 0;
 }
 
 static void drm_test_framebuffer_create(struct kunit *test)
 {
 	const struct drm_framebuffer_test *params = test->param_value;
-	struct drm_device *mock = test->priv;
-	int buffer_created = 0;
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *dev = &priv->dev;
 
-	mock->dev_private = &buffer_created;
-	drm_internal_framebuffer_create(mock, &params->cmd, NULL);
-	KUNIT_EXPECT_EQ(test, params->buffer_created, buffer_created);
+	priv->buffer_created = false;
+	drm_internal_framebuffer_create(dev, &params->cmd, NULL);
+	KUNIT_EXPECT_EQ(test, params->buffer_created, priv->buffer_created);
 }
 
 static void drm_framebuffer_test_to_desc(const struct drm_framebuffer_test *t, char *desc)
 {
-	strcpy(desc, t->name);
+	strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE);
 }
 
 KUNIT_ARRAY_PARAM(drm_framebuffer_create, drm_framebuffer_create_cases,
 		  drm_framebuffer_test_to_desc);
 
+/* Tries to create a framebuffer with modifiers without drm_device supporting it */
+static void drm_test_framebuffer_modifiers_not_supported(struct kunit *test)
+{
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *dev = &priv->dev;
+	struct drm_framebuffer *fb;
+
+	/* A valid cmd with modifier */
+	struct drm_mode_fb_cmd2 cmd = {
+		.width = MAX_WIDTH, .height = MAX_HEIGHT,
+		.pixel_format = DRM_FORMAT_ABGR8888, .handles = { 1, 0, 0 },
+		.offsets = { UINT_MAX / 2, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 },
+		.flags = DRM_MODE_FB_MODIFIERS,
+	};
+
+	priv->buffer_created = false;
+	dev->mode_config.fb_modifiers_not_supported = 1;
+
+	fb = drm_internal_framebuffer_create(dev, &cmd, NULL);
+	KUNIT_EXPECT_EQ(test, priv->buffer_created, false);
+	KUNIT_EXPECT_EQ(test, PTR_ERR(fb), -EINVAL);
+}
+
+/* Parameters for testing drm_framebuffer_check_src_coords function */
+struct drm_framebuffer_check_src_coords_case {
+	const char *name;
+	const int expect;
+	const unsigned int fb_size;
+	const uint32_t src_x;
+	const uint32_t src_y;
+
+	/* Deltas to be applied on source */
+	const uint32_t dsrc_w;
+	const uint32_t dsrc_h;
+};
+
+static const struct drm_framebuffer_check_src_coords_case
+drm_framebuffer_check_src_coords_cases[] = {
+	{ .name = "Success: source fits into fb",
+	  .expect = 0,
+	},
+	{ .name = "Fail: overflowing fb with x-axis coordinate",
+	  .expect = -ENOSPC, .src_x = 1, .fb_size = UINT_MAX,
+	},
+	{ .name = "Fail: overflowing fb with y-axis coordinate",
+	  .expect = -ENOSPC, .src_y = 1, .fb_size = UINT_MAX,
+	},
+	{ .name = "Fail: overflowing fb with source width",
+	  .expect = -ENOSPC, .dsrc_w = 1, .fb_size = UINT_MAX - 1,
+	},
+	{ .name = "Fail: overflowing fb with source height",
+	  .expect = -ENOSPC, .dsrc_h = 1, .fb_size = UINT_MAX - 1,
+	},
+};
+
+static void drm_test_framebuffer_check_src_coords(struct kunit *test)
+{
+	const struct drm_framebuffer_check_src_coords_case *params = test->param_value;
+	const uint32_t src_x = params->src_x;
+	const uint32_t src_y = params->src_y;
+	const uint32_t src_w = (params->fb_size << 16) + params->dsrc_w;
+	const uint32_t src_h = (params->fb_size << 16) + params->dsrc_h;
+	const struct drm_framebuffer fb = {
+		.width  = params->fb_size,
+		.height = params->fb_size
+	};
+	int ret;
+
+	ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, &fb);
+	KUNIT_EXPECT_EQ(test, ret, params->expect);
+}
+
+static void
+check_src_coords_test_to_desc(const struct drm_framebuffer_check_src_coords_case *t,
+			      char *desc)
+{
+	strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE);
+}
+
+KUNIT_ARRAY_PARAM(check_src_coords, drm_framebuffer_check_src_coords_cases,
+		  check_src_coords_test_to_desc);
+
+/*
+ * Test if drm_framebuffer_cleanup() really pops out the framebuffer object
+ * from device's fb_list and decrement the number of framebuffers for that
+ * device, which is the only things it does.
+ */
+static void drm_test_framebuffer_cleanup(struct kunit *test)
+{
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *dev = &priv->dev;
+	struct list_head *fb_list = &dev->mode_config.fb_list;
+	struct drm_format_info format = { };
+	struct drm_framebuffer fb1 = { .dev = dev, .format = &format };
+	struct drm_framebuffer fb2 = { .dev = dev, .format = &format };
+
+	/* This will result on [fb_list] -> fb2 -> fb1 */
+	drm_framebuffer_init(dev, &fb1, NULL);
+	drm_framebuffer_init(dev, &fb2, NULL);
+
+	drm_framebuffer_cleanup(&fb1);
+
+	/* Now fb2 is the only one element on fb_list */
+	KUNIT_ASSERT_TRUE(test, list_is_singular(&fb2.head));
+	KUNIT_ASSERT_EQ(test, dev->mode_config.num_fb, 1);
+
+	drm_framebuffer_cleanup(&fb2);
+
+	/* Now fb_list is empty */
+	KUNIT_ASSERT_TRUE(test, list_empty(fb_list));
+	KUNIT_ASSERT_EQ(test, dev->mode_config.num_fb, 0);
+}
+
+/*
+ * Initialize a framebuffer, lookup its id and test if the returned reference
+ * matches.
+ */
+static void drm_test_framebuffer_lookup(struct kunit *test)
+{
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *dev = &priv->dev;
+	struct drm_format_info format = { };
+	struct drm_framebuffer expected_fb = { .dev = dev, .format = &format };
+	struct drm_framebuffer *returned_fb;
+	uint32_t id = 0;
+	int ret;
+
+	ret = drm_framebuffer_init(dev, &expected_fb, NULL);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+	id = expected_fb.base.id;
+
+	/* Looking for expected_fb */
+	returned_fb = drm_framebuffer_lookup(dev, NULL, id);
+	KUNIT_EXPECT_PTR_EQ(test, returned_fb, &expected_fb);
+	drm_framebuffer_put(returned_fb);
+
+	drm_framebuffer_cleanup(&expected_fb);
+}
+
+/* Try to lookup an id that is not linked to a framebuffer */
+static void drm_test_framebuffer_lookup_inexistent(struct kunit *test)
+{
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *dev = &priv->dev;
+	struct drm_framebuffer *fb;
+	uint32_t id = 0;
+
+	/* Looking for an inexistent framebuffer */
+	fb = drm_framebuffer_lookup(dev, NULL, id);
+	KUNIT_EXPECT_NULL(test, fb);
+}
+
+/*
+ * Test if drm_framebuffer_init initializes the framebuffer successfully,
+ * asserting that its modeset object struct and its refcount are correctly
+ * set and that strictly one framebuffer is initialized.
+ */
+static void drm_test_framebuffer_init(struct kunit *test)
+{
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *dev = &priv->dev;
+	struct drm_format_info format = { };
+	struct drm_framebuffer fb1 = { .dev = dev, .format = &format };
+	struct drm_framebuffer_funcs funcs = { };
+	int ret;
+
+	ret = drm_framebuffer_init(dev, &fb1, &funcs);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	/* Check if fb->funcs is actually set to the drm_framebuffer_funcs passed on */
+	KUNIT_EXPECT_PTR_EQ(test, fb1.funcs, &funcs);
+
+	/* The fb->comm must be set to the current running process */
+	KUNIT_EXPECT_STREQ(test, fb1.comm, current->comm);
+
+	/* The fb->base must be successfully initialized */
+	KUNIT_EXPECT_NE(test, fb1.base.id, 0);
+	KUNIT_EXPECT_EQ(test, fb1.base.type, DRM_MODE_OBJECT_FB);
+	KUNIT_EXPECT_EQ(test, kref_read(&fb1.base.refcount), 1);
+	KUNIT_EXPECT_PTR_EQ(test, fb1.base.free_cb, &drm_framebuffer_free);
+
+	/* There must be just that one fb initialized */
+	KUNIT_EXPECT_EQ(test, dev->mode_config.num_fb, 1);
+	KUNIT_EXPECT_PTR_EQ(test, dev->mode_config.fb_list.prev, &fb1.head);
+	KUNIT_EXPECT_PTR_EQ(test, dev->mode_config.fb_list.next, &fb1.head);
+
+	drm_framebuffer_cleanup(&fb1);
+}
+
+/* Try to init a framebuffer without setting its format */
+static void drm_test_framebuffer_init_bad_format(struct kunit *test)
+{
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *dev = &priv->dev;
+	struct drm_framebuffer fb1 = { .dev = dev, .format = NULL };
+	struct drm_framebuffer_funcs funcs = { };
+	int ret;
+
+	/* Fails if fb.format isn't set */
+	ret = drm_framebuffer_init(dev, &fb1, &funcs);
+	KUNIT_EXPECT_EQ(test, ret, -EINVAL);
+}
+
+/*
+ * Test calling drm_framebuffer_init() passing a framebuffer linked to a
+ * different drm_device parent from the one passed on the first argument, which
+ * must fail.
+ */
+static void drm_test_framebuffer_init_dev_mismatch(struct kunit *test)
+{
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *right_dev = &priv->dev;
+	struct drm_device *wrong_dev;
+	struct device *wrong_dev_parent;
+	struct drm_format_info format = { };
+	struct drm_framebuffer fb1 = { .dev = right_dev, .format = &format };
+	struct drm_framebuffer_funcs funcs = { };
+	int ret;
+
+	wrong_dev_parent = kunit_device_register(test, "drm-kunit-wrong-device-mock");
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, wrong_dev_parent);
+
+	wrong_dev = __drm_kunit_helper_alloc_drm_device(test, wrong_dev_parent,
+							sizeof(struct drm_device),
+							0, 0);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, wrong_dev);
+
+	/* Fails if fb->dev doesn't point to the drm_device passed on first arg */
+	ret = drm_framebuffer_init(wrong_dev, &fb1, &funcs);
+	KUNIT_EXPECT_EQ(test, ret, -EINVAL);
+}
+
+static void destroy_free_mock(struct drm_framebuffer *fb)
+{
+	struct drm_framebuffer_test_priv *priv = container_of(fb->dev, typeof(*priv), dev);
+
+	priv->buffer_freed = true;
+}
+
+static struct drm_framebuffer_funcs framebuffer_funcs_free_mock = {
+	.destroy = destroy_free_mock,
+};
+
+/*
+ * In summary, the drm_framebuffer_free() function must implicitly call
+ * fb->funcs->destroy() and garantee that the framebufer object is unregistered
+ * from the drm_device idr pool.
+ */
+static void drm_test_framebuffer_free(struct kunit *test)
+{
+	struct drm_framebuffer_test_priv *priv = test->priv;
+	struct drm_device *dev = &priv->dev;
+	struct drm_mode_object *obj;
+	struct drm_framebuffer fb = {
+		.dev = dev,
+		.funcs = &framebuffer_funcs_free_mock,
+	};
+	int id, ret;
+
+	priv->buffer_freed = false;
+
+	/*
+	 * Mock	a framebuffer that was not unregistered	at the moment of the
+	 * drm_framebuffer_free() call.
+	 */
+	ret = drm_mode_object_add(dev, &fb.base, DRM_MODE_OBJECT_FB);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+	id = fb.base.id;
+
+	drm_framebuffer_free(&fb.base.refcount);
+
+	/* The framebuffer object must be unregistered */
+	obj = drm_mode_object_find(dev, NULL, id, DRM_MODE_OBJECT_FB);
+	KUNIT_EXPECT_PTR_EQ(test, obj, NULL);
+	KUNIT_EXPECT_EQ(test, fb.base.id, 0);
+
+	/* Test if fb->funcs->destroy() was called */
+	KUNIT_EXPECT_EQ(test, priv->buffer_freed, true);
+}
+
 static struct kunit_case drm_framebuffer_tests[] = {
+	KUNIT_CASE_PARAM(drm_test_framebuffer_check_src_coords, check_src_coords_gen_params),
+	KUNIT_CASE(drm_test_framebuffer_cleanup),
 	KUNIT_CASE_PARAM(drm_test_framebuffer_create, drm_framebuffer_create_gen_params),
+	KUNIT_CASE(drm_test_framebuffer_free),
+	KUNIT_CASE(drm_test_framebuffer_init),
+	KUNIT_CASE(drm_test_framebuffer_init_bad_format),
+	KUNIT_CASE(drm_test_framebuffer_init_dev_mismatch),
+	KUNIT_CASE(drm_test_framebuffer_lookup),
+	KUNIT_CASE(drm_test_framebuffer_lookup_inexistent),
+	KUNIT_CASE(drm_test_framebuffer_modifiers_not_supported),
 	{ }
 };
 

drivers/gpu/drm/tiny/Kconfig

···
 config DRM_BOCHS
 	tristate "DRM Support for bochs dispi vga interface (qemu stdvga)"
 	depends on DRM && PCI && MMU
+	select DRM_GEM_SHMEM_HELPER
 	select DRM_KMS_HELPER
-	select DRM_VRAM_HELPER
-	select DRM_TTM
-	select DRM_TTM_HELPER
 	help
 	  This is a KMS driver for qemu's stdvga output. Choose this option
 	  for qemu.

drivers/gpu/drm/tiny/bochs.c

···
 #include <linux/pci.h>
 
 #include <drm/drm_aperture.h>
+#include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_damage_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_fbdev_ttm.h>
+#include <drm/drm_fbdev_shmem.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
+#include <drm/drm_gem_atomic_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_gem_vram_helper.h>
+#include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_module.h>
+#include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
 
 #include <video/vga.h>
 
···
 };
 
 struct bochs_device {
+	struct drm_device dev;
+
 	/* hw */
 	void __iomem   *mmio;
 	int            ioports;
···
 	u16 yres_virtual;
 	u32 stride;
 	u32 bpp;
-	const struct drm_edid *drm_edid;
 
 	/* drm */
-	struct drm_device *dev;
-	struct drm_simple_display_pipe pipe;
+	struct drm_plane primary_plane;
+	struct drm_crtc crtc;
+	struct drm_encoder encoder;
 	struct drm_connector connector;
 };
+
+static struct bochs_device *to_bochs_device(const struct drm_device *dev)
+{
+	return container_of(dev, struct bochs_device, dev);
+}
 
 /* ---------------------------------------------------------------------- */
 
···
 #define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b)
 #endif
 
-static int bochs_get_edid_block(void *data, u8 *buf,
-				unsigned int block, size_t len)
+static int bochs_get_edid_block(void *data, u8 *buf, unsigned int block, size_t len)
 {
 	struct bochs_device *bochs = data;
 	size_t i, start = block * EDID_LENGTH;
+
+	if (!bochs->mmio)
+		return -1;
 
 	if (start + len > 0x400 /* vga register offset */)
 		return -1;
···
 	return 0;
 }
 
-static int bochs_hw_load_edid(struct bochs_device *bochs)
+static const struct drm_edid *bochs_hw_read_edid(struct drm_connector *connector)
 {
+	struct drm_device *dev = connector->dev;
+	struct bochs_device *bochs = to_bochs_device(dev);
 	u8 header[8];
-
-	if (!bochs->mmio)
-		return -1;
 
 	/* check header to detect whenever edid support is enabled in qemu */
 	bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header));
 	if (drm_edid_header_is_valid(header) != 8)
-		return -1;
+		return NULL;
 
-	drm_edid_free(bochs->drm_edid);
-	bochs->drm_edid = drm_edid_read_custom(&bochs->connector,
-					       bochs_get_edid_block, bochs);
-	if (!bochs->drm_edid)
-		return -1;
+	drm_dbg(dev, "Found EDID data blob.\n");
 
-	return 0;
+	return drm_edid_read_custom(connector, bochs_get_edid_block, bochs);
 }
 
-static int bochs_hw_init(struct drm_device *dev)
+static int bochs_hw_init(struct bochs_device *bochs)
 {
-	struct bochs_device *bochs = dev->dev_private;
+	struct drm_device *dev = &bochs->dev;
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
 	unsigned long addr, size, mem, ioaddr, iosize;
 	u16 id;
 
 	if (pdev->resource[2].flags & IORESOURCE_MEM) {
+		ioaddr = pci_resource_start(pdev, 2);
+		iosize = pci_resource_len(pdev, 2);
 		/* mmio bar with vga and bochs registers present */
-		if (pci_request_region(pdev, 2, "bochs-drm") != 0) {
+		if (!devm_request_mem_region(&pdev->dev, ioaddr, iosize, "bochs-drm")) {
 			DRM_ERROR("Cannot request mmio region\n");
 			return -EBUSY;
 		}
-		ioaddr = pci_resource_start(pdev, 2);
-		iosize = pci_resource_len(pdev, 2);
-		bochs->mmio = ioremap(ioaddr, iosize);
+		bochs->mmio = devm_ioremap(&pdev->dev, ioaddr, iosize);
 		if (bochs->mmio == NULL) {
 			DRM_ERROR("Cannot map mmio region\n");
 			return -ENOMEM;
···
 	} else {
 		ioaddr = VBE_DISPI_IOPORT_INDEX;
 		iosize = 2;
-		if (!request_region(ioaddr, iosize, "bochs-drm")) {
+		if (!devm_request_region(&pdev->dev, ioaddr, iosize, "bochs-drm")) {
 			DRM_ERROR("Cannot request ioports\n");
 			return -EBUSY;
 		}
···
 		size = min(size, mem);
 	}
 
-	if (pci_request_region(pdev, 0, "bochs-drm") != 0)
+	if (!devm_request_mem_region(&pdev->dev, addr, size, "bochs-drm"))
 		DRM_WARN("Cannot request framebuffer, boot fb still active?\n");
 
-	bochs->fb_map = ioremap(addr, size);
+	bochs->fb_map = devm_ioremap_wc(&pdev->dev, addr, size);
 	if (bochs->fb_map == NULL) {
 		DRM_ERROR("Cannot map framebuffer\n");
 		return -ENOMEM;
···
 	return 0;
 }
 
-static void bochs_hw_fini(struct drm_device *dev)
-{
-	struct bochs_device *bochs = dev->dev_private;
-
-	/* TODO: shot down existing vram mappings */
-
-	if (bochs->mmio)
-		iounmap(bochs->mmio);
-	if (bochs->ioports)
-		release_region(VBE_DISPI_IOPORT_INDEX, 2);
-	if (bochs->fb_map)
-		iounmap(bochs->fb_map);
-	pci_release_regions(to_pci_dev(dev->dev));
-	drm_edid_free(bochs->drm_edid);
-}
-
 static void bochs_hw_blank(struct bochs_device *bochs, bool blank)
 {
 	DRM_DEBUG_DRIVER("hw_blank %d\n", blank);
···
 {
 	int idx;
 
-	if (!drm_dev_enter(bochs->dev, &idx))
+	if (!drm_dev_enter(&bochs->dev, &idx))
 		return;
 
 	bochs->xres = mode->hdisplay;
···
 {
 	int idx;
 
-	if (!drm_dev_enter(bochs->dev, &idx))
+	if (!drm_dev_enter(&bochs->dev, &idx))
 		return;
 
 	DRM_DEBUG_DRIVER("format %c%c%c%c\n",
···
 	unsigned long offset;
 	unsigned int vx, vy, vwidth, idx;
 
-	if (!drm_dev_enter(bochs->dev, &idx))
+	if (!drm_dev_enter(&bochs->dev, &idx))
 		return;
 
 	bochs->stride = stride;
···
 
 /* ---------------------------------------------------------------------- */
 
-static const uint32_t bochs_formats[] = {
+static const uint32_t bochs_primary_plane_formats[] = {
 	DRM_FORMAT_XRGB8888,
 	DRM_FORMAT_BGRX8888,
 };
 
-static void bochs_plane_update(struct bochs_device *bochs, struct drm_plane_state *state)
+static int bochs_primary_plane_helper_atomic_check(struct drm_plane *plane,
+						   struct drm_atomic_state *state)
 {
-	struct drm_gem_vram_object *gbo;
-	s64 gpu_addr;
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane);
+	struct drm_crtc *new_crtc = new_plane_state->crtc;
+	struct drm_crtc_state *new_crtc_state = NULL;
+	int ret;
 
-	if (!state->fb || !bochs->stride)
+	if (new_crtc)
+		new_crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc);
+
+	ret = drm_atomic_helper_check_plane_state(new_plane_state, new_crtc_state,
+						  DRM_PLANE_NO_SCALING,
+						  DRM_PLANE_NO_SCALING,
+						  false, false);
+	if (ret)
+		return ret;
+	else if (!new_plane_state->visible)
+		return 0;
+
+	return 0;
+}
+
+static void bochs_primary_plane_helper_atomic_update(struct drm_plane *plane,
+						     struct drm_atomic_state *state)
+{
+	struct drm_device *dev = plane->dev;
+	struct bochs_device *bochs = to_bochs_device(dev);
+	struct drm_plane_state *plane_state = plane->state;
+	struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state, plane);
+	struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
+	struct drm_framebuffer *fb = plane_state->fb;
+	struct drm_atomic_helper_damage_iter iter;
+	struct drm_rect damage;
+
+	if (!fb || !bochs->stride)
 		return;
 
-	gbo = drm_gem_vram_of_gem(state->fb->obj[0]);
-	gpu_addr = drm_gem_vram_offset(gbo);
-	if (WARN_ON_ONCE(gpu_addr < 0))
-		return; /* Bug: we didn't pin the BO to VRAM in prepare_fb. */
+	drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state);
+	drm_atomic_for_each_plane_damage(&iter, &damage) {
+		struct iosys_map dst = IOSYS_MAP_INIT_VADDR_IOMEM(bochs->fb_map);
 
+		iosys_map_incr(&dst, drm_fb_clip_offset(fb->pitches[0], fb->format, &damage));
+		drm_fb_memcpy(&dst, fb->pitches, shadow_plane_state->data, fb, &damage);
+	}
+
+	/* Always scanout image at VRAM offset 0 */
 	bochs_hw_setbase(bochs,
-			 state->crtc_x,
-			 state->crtc_y,
-			 state->fb->pitches[0],
-			 state->fb->offsets[0] + gpu_addr);
-	bochs_hw_setformat(bochs, state->fb->format);
+			 plane_state->crtc_x,
+			 plane_state->crtc_y,
+			 fb->pitches[0],
+			 0);
+	bochs_hw_setformat(bochs, fb->format);
 }
 
-static void bochs_pipe_enable(struct drm_simple_display_pipe *pipe,
-			      struct drm_crtc_state *crtc_state,
-			      struct drm_plane_state *plane_state)
+static const struct drm_plane_helper_funcs bochs_primary_plane_helper_funcs = {
+	DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
+	.atomic_check = bochs_primary_plane_helper_atomic_check,
+	.atomic_update = bochs_primary_plane_helper_atomic_update,
+};
+
+static const struct drm_plane_funcs bochs_primary_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = drm_plane_cleanup,
+	DRM_GEM_SHADOW_PLANE_FUNCS
+};
+
+static void bochs_crtc_helper_mode_set_nofb(struct drm_crtc *crtc)
 {
-	struct bochs_device *bochs = pipe->crtc.dev->dev_private;
+	struct bochs_device *bochs = to_bochs_device(crtc->dev);
+	struct drm_crtc_state *crtc_state = crtc->state;
 
 	bochs_hw_setmode(bochs, &crtc_state->mode);
-	bochs_plane_update(bochs, plane_state);
 }
 
-static void bochs_pipe_disable(struct drm_simple_display_pipe *pipe)
+static int bochs_crtc_helper_atomic_check(struct drm_crtc *crtc,
+					  struct drm_atomic_state *state)
 {
-	struct bochs_device *bochs = pipe->crtc.dev->dev_private;
+	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+
+	if (!crtc_state->enable)
+		return 0;
+
+	return drm_atomic_helper_check_crtc_primary_plane(crtc_state);
+}
+
+static void bochs_crtc_helper_atomic_enable(struct drm_crtc *crtc,
+					    struct drm_atomic_state *state)
+{
+}
+
+static void bochs_crtc_helper_atomic_disable(struct drm_crtc *crtc,
+					     struct drm_atomic_state *crtc_state)
+{
+	struct bochs_device *bochs = to_bochs_device(crtc->dev);
 
 	bochs_hw_blank(bochs, true);
 }
 
-static void bochs_pipe_update(struct drm_simple_display_pipe *pipe,
-			      struct drm_plane_state *old_state)
-{
-	struct bochs_device *bochs = pipe->crtc.dev->dev_private;
-
-	bochs_plane_update(bochs, pipe->plane.state);
-}
-
-static const struct drm_simple_display_pipe_funcs bochs_pipe_funcs = {
-	.enable	    = bochs_pipe_enable,
-	.disable    = bochs_pipe_disable,
-	.update	    = bochs_pipe_update,
-	.prepare_fb = drm_gem_vram_simple_display_pipe_prepare_fb,
-	.cleanup_fb = drm_gem_vram_simple_display_pipe_cleanup_fb,
+static const struct drm_crtc_helper_funcs bochs_crtc_helper_funcs = {
+	.mode_set_nofb = bochs_crtc_helper_mode_set_nofb,
+	.atomic_check = bochs_crtc_helper_atomic_check,
+	.atomic_enable = bochs_crtc_helper_atomic_enable,
+	.atomic_disable = bochs_crtc_helper_atomic_disable,
 };
 
-static int bochs_connector_get_modes(struct drm_connector *connector)
+static const struct drm_crtc_funcs bochs_crtc_funcs = {
+	.reset = drm_atomic_helper_crtc_reset,
+	.destroy = drm_crtc_cleanup,
+	.set_config = drm_atomic_helper_set_config,
+	.page_flip = drm_atomic_helper_page_flip,
+	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
+
+static const struct drm_encoder_funcs bochs_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
+static int bochs_connector_helper_get_modes(struct drm_connector *connector)
 {
+	const struct drm_edid *edid;
 	int count;
 
-	count = drm_edid_connector_add_modes(connector);
+	edid = bochs_hw_read_edid(connector);
 
-	if (!count) {
+	if (edid) {
+		drm_edid_connector_update(connector, edid);
+		count = drm_edid_connector_add_modes(connector);
+		drm_edid_free(edid);
+	} else {
+		drm_edid_connector_update(connector, NULL);
 		count = drm_add_modes_noedid(connector, 8192, 8192);
 		drm_set_preferred_mode(connector, defx, defy);
 	}
+
 	return count;
 }
 
-static const struct drm_connector_helper_funcs bochs_connector_connector_helper_funcs = {
-	.get_modes = bochs_connector_get_modes,
+static const struct drm_connector_helper_funcs bochs_connector_helper_funcs = {
+	.get_modes = bochs_connector_helper_get_modes,
 };
 
-static const struct drm_connector_funcs bochs_connector_connector_funcs = {
+static const struct drm_connector_funcs bochs_connector_funcs = {
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = drm_connector_cleanup,
 	.reset = drm_atomic_helper_connector_reset,
···
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static void bochs_connector_init(struct drm_device *dev)
+static enum drm_mode_status bochs_mode_config_mode_valid(struct drm_device *dev,
+							 const struct drm_display_mode *mode)
 {
-	struct bochs_device *bochs = dev->dev_private;
-	struct drm_connector *connector = &bochs->connector;
+	struct bochs_device *bochs = to_bochs_device(dev);
+	const struct drm_format_info *format = drm_format_info(DRM_FORMAT_XRGB8888);
+	u64 pitch;
 
-	drm_connector_init(dev, connector, &bochs_connector_connector_funcs,
-			   DRM_MODE_CONNECTOR_VIRTUAL);
-	drm_connector_helper_add(connector, &bochs_connector_connector_helper_funcs);
+	if (drm_WARN_ON(dev, !format))
+		return MODE_ERROR;
 
-	bochs_hw_load_edid(bochs);
-	if (bochs->drm_edid) {
-		DRM_INFO("Found EDID data blob.\n");
-		drm_connector_attach_edid_property(connector);
-		drm_edid_connector_update(&bochs->connector, bochs->drm_edid);
-	}
+	pitch = drm_format_info_min_pitch(format, 0, mode->hdisplay);
+	if (!pitch)
+		return MODE_BAD_WIDTH;
+	if (mode->vdisplay > DIV_ROUND_DOWN_ULL(bochs->fb_size, pitch))
+		return MODE_MEM;
+
+	return MODE_OK;
 }
 
-static struct drm_framebuffer *
-bochs_gem_fb_create(struct drm_device *dev, struct drm_file *file,
-		    const struct drm_mode_fb_cmd2 *mode_cmd)
-{
-	if (mode_cmd->pixel_format != DRM_FORMAT_XRGB8888 &&
-	    mode_cmd->pixel_format != DRM_FORMAT_BGRX8888)
-		return ERR_PTR(-EINVAL);
-
-	return drm_gem_fb_create(dev, file, mode_cmd);
-}
-
-static const struct drm_mode_config_funcs bochs_mode_funcs = {
-	.fb_create = bochs_gem_fb_create,
-	.mode_valid = drm_vram_helper_mode_valid,
+static const struct drm_mode_config_funcs bochs_mode_config_funcs = {
+	.fb_create = drm_gem_fb_create_with_dirty,
+	.mode_valid = bochs_mode_config_mode_valid,
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
 
 static int bochs_kms_init(struct bochs_device *bochs)
 {
+	struct drm_device *dev = &bochs->dev;
+	struct drm_plane *primary_plane;
+	struct drm_crtc *crtc;
+	struct drm_connector *connector;
+	struct drm_encoder *encoder;
 	int ret;
 
-	ret = drmm_mode_config_init(bochs->dev);
+	ret = drmm_mode_config_init(dev);
 	if (ret)
 		return ret;
 
-	bochs->dev->mode_config.max_width = 8192;
-	bochs->dev->mode_config.max_height = 8192;
+	dev->mode_config.max_width = 8192;
+	dev->mode_config.max_height = 8192;
 
-	bochs->dev->mode_config.preferred_depth = 24;
-	bochs->dev->mode_config.prefer_shadow = 0;
-	bochs->dev->mode_config.quirk_addfb_prefer_host_byte_order = true;
+	dev->mode_config.preferred_depth = 24;
+	dev->mode_config.quirk_addfb_prefer_host_byte_order = true;
 
-	bochs->dev->mode_config.funcs = &bochs_mode_funcs;
+	dev->mode_config.funcs = &bochs_mode_config_funcs;
 
-	bochs_connector_init(bochs->dev);
-	drm_simple_display_pipe_init(bochs->dev,
-				     &bochs->pipe,
-				     &bochs_pipe_funcs,
-				     bochs_formats,
-				     ARRAY_SIZE(bochs_formats),
-				     NULL,
-				     &bochs->connector);
+	primary_plane = &bochs->primary_plane;
+	ret = drm_universal_plane_init(dev, primary_plane, 0,
+				       &bochs_primary_plane_funcs,
+				       bochs_primary_plane_formats,
+				       ARRAY_SIZE(bochs_primary_plane_formats),
+				       NULL,
+				       DRM_PLANE_TYPE_PRIMARY, NULL);
+	if (ret)
+		return ret;
+	drm_plane_helper_add(primary_plane, &bochs_primary_plane_helper_funcs);
+	drm_plane_enable_fb_damage_clips(primary_plane);
 
-	drm_mode_config_reset(bochs->dev);
+	crtc = &bochs->crtc;
+	ret = drm_crtc_init_with_planes(dev, crtc, primary_plane, NULL,
+					&bochs_crtc_funcs, NULL);
+	if (ret)
+		return ret;
+	drm_crtc_helper_add(crtc, &bochs_crtc_helper_funcs);
+
+	encoder = &bochs->encoder;
+	ret = drm_encoder_init(dev, encoder, &bochs_encoder_funcs,
+			       DRM_MODE_ENCODER_VIRTUAL, NULL);
+	if (ret)
+		return ret;
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
+
+	connector = &bochs->connector;
+	ret = drm_connector_init(dev, connector, &bochs_connector_funcs,
+				 DRM_MODE_CONNECTOR_VIRTUAL);
+	if (ret)
+		return ret;
+	drm_connector_helper_add(connector, &bochs_connector_helper_funcs);
+	drm_connector_attach_edid_property(connector);
+	drm_connector_attach_encoder(connector, encoder);
+
+	drm_mode_config_reset(dev);
 
 	return 0;
 }
···
 /* ---------------------------------------------------------------------- */
 /* drm interface                                                          */
 
-static int bochs_load(struct drm_device *dev)
+static int bochs_load(struct bochs_device *bochs)
 {
-	struct bochs_device *bochs;
 	int ret;
 
-	bochs = drmm_kzalloc(dev, sizeof(*bochs), GFP_KERNEL);
-	if (bochs == NULL)
-		return -ENOMEM;
-	dev->dev_private = bochs;
-	bochs->dev = dev;
-
-	ret = bochs_hw_init(dev);
+	ret = bochs_hw_init(bochs);
 	if (ret)
 		return ret;
 
-	ret = drmm_vram_helper_init(dev, bochs->fb_base, bochs->fb_size);
-	if (ret)
-		goto err_hw_fini;
-
 	ret = bochs_kms_init(bochs);
 	if (ret)
-		goto err_hw_fini;
+		return ret;
 
 	return 0;
-
-err_hw_fini:
-	bochs_hw_fini(dev);
-	return ret;
 }
 
 DEFINE_DRM_GEM_FOPS(bochs_fops);
···
 	.date			= "20130925",
 	.major			= 1,
 	.minor			= 0,
-	DRM_GEM_VRAM_DRIVER,
+	DRM_GEM_SHMEM_DRIVER_OPS,
 };
 
 /* ---------------------------------------------------------------------- */
···
 
 static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
+	struct bochs_device *bochs;
 	struct drm_device *dev;
-	unsigned long fbsize;
 	int ret;
-
-	fbsize = pci_resource_len(pdev, 0);
-	if (fbsize < 4 * 1024 * 1024) {
-		DRM_ERROR("less than 4 MB video memory, ignoring device\n");
-		return -ENOMEM;
-	}
 
 	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &bochs_driver);
 	if (ret)
 		return ret;
 
-	dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
-	if (IS_ERR(dev))
+	bochs = devm_drm_dev_alloc(&pdev->dev, &bochs_driver, struct bochs_device, dev);
+	if (IS_ERR(bochs))
 		return PTR_ERR(dev);
+	dev = &bochs->dev;
 
 	ret = pcim_enable_device(pdev);
 	if (ret)
···
 
 	pci_set_drvdata(pdev, dev);
 
-	ret = bochs_load(dev);
+	ret = bochs_load(bochs);
 	if (ret)
 		goto err_free_dev;
 
 	ret = drm_dev_register(dev, 0);
 	if (ret)
-		goto err_hw_fini;
+		goto err_free_dev;
 
-	drm_fbdev_ttm_setup(dev, 32);
+	drm_fbdev_shmem_setup(dev, 32);
 	return ret;
 
-err_hw_fini:
-	bochs_hw_fini(dev);
 err_free_dev:
 	drm_dev_put(dev);
 	return ret;
···
 
 	drm_dev_unplug(dev);
 	drm_atomic_helper_shutdown(dev);
-	bochs_hw_fini(dev);
 	drm_dev_put(dev);
 }
 

drivers/gpu/drm/v3d/v3d_sched.c

···
 	struct v3d_stats *global_stats = &v3d->queue[queue].stats;
 	struct v3d_stats *local_stats = &file->stats[queue];
 	u64 now = local_clock();
+	unsigned long flags;
 
-	preempt_disable();
+	/*
+	 * We only need to disable local interrupts to appease lockdep who
+	 * otherwise would think v3d_job_start_stats vs v3d_stats_update has an
+	 * unsafe in-irq vs no-irq-off usage problem. This is a false positive
+	 * because all the locks are per queue and stats type, and all jobs are
+	 * completely one at a time serialised. More specifically:
+	 *
+	 * 1. Locks for GPU queues are updated from interrupt handlers under a
+	 *    spin lock and started here with preemption disabled.
+	 *
+	 * 2. Locks for CPU queues are updated from the worker with preemption
+	 *    disabled and equally started here with preemption disabled.
+	 *
+	 * Therefore both are consistent.
+	 *
+	 * 3. Because next job can only be queued after the previous one has
+	 *    been signaled, and locks are per queue, there is also no scope for
+	 *    the start part to race with the update part.
+	 */
+	if (IS_ENABLED(CONFIG_LOCKDEP))
+		local_irq_save(flags);
+	else
+		preempt_disable();
 
 	write_seqcount_begin(&local_stats->lock);
 	local_stats->start_ns = now;
···
 	global_stats->start_ns = now;
 	write_seqcount_end(&global_stats->lock);
 
-	preempt_enable();
+	if (IS_ENABLED(CONFIG_LOCKDEP))
+		local_irq_restore(flags);
+	else
+		preempt_enable();
 }
 
 static void
···
 	struct v3d_stats *global_stats = &v3d->queue[queue].stats;
 	struct v3d_stats *local_stats = &file->stats[queue];
 	u64 now = local_clock();
+	unsigned long flags;
 
-	preempt_disable();
+	/* See comment in v3d_job_start_stats() */
+	if (IS_ENABLED(CONFIG_LOCKDEP))
+		local_irq_save(flags);
+	else
+		preempt_disable();
+
 	v3d_stats_update(local_stats, now);
 	v3d_stats_update(global_stats, now);
-	preempt_enable();
+
+	if (IS_ENABLED(CONFIG_LOCKDEP))
+		local_irq_restore(flags);
+	else
+		preempt_enable();
 }
 
 static struct dma_fence *v3d_bin_job_run(struct drm_sched_job *sched_job)
···
 
 	/* Unblock schedulers and restart their jobs. */
 	for (q = 0; q < V3D_MAX_QUEUES; q++) {
-		drm_sched_start(&v3d->queue[q].sched);
+		drm_sched_start(&v3d->queue[q].sched, 0);
 	}
 
 	mutex_unlock(&v3d->reset_lock);

drivers/gpu/drm/vc4/tests/vc4_mock.c

···
 			    drm_dev_unregister,
 			    struct drm_device *);
 
-static struct vc4_dev *__mock_device(struct kunit *test, bool is_vc5)
+static struct vc4_dev *__mock_device(struct kunit *test, enum vc4_gen gen)
 {
 	struct drm_device *drm;
-	const struct drm_driver *drv = is_vc5 ? &vc5_drm_driver : &vc4_drm_driver;
-	const struct vc4_mock_desc *desc = is_vc5 ? &vc5_mock : &vc4_mock;
+	const struct drm_driver *drv = (gen == VC4_GEN_5) ? &vc5_drm_driver : &vc4_drm_driver;
+	const struct vc4_mock_desc *desc = (gen == VC4_GEN_5) ? &vc5_mock : &vc4_mock;
 	struct vc4_dev *vc4;
 	struct device *dev;
 	int ret;
···
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4);
 
 	vc4->dev = dev;
-	vc4->is_vc5 = is_vc5;
+	vc4->gen = gen;
 
-	vc4->hvs = __vc4_hvs_alloc(vc4, NULL);
+	vc4->hvs = __vc4_hvs_alloc(vc4, NULL, NULL);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4->hvs);
 
 	drm = &vc4->base;
···
 
 struct vc4_dev *vc4_mock_device(struct kunit *test)
 {
-	return __mock_device(test, false);
+	return __mock_device(test, VC4_GEN_4);
 }
 
 struct vc4_dev *vc5_mock_device(struct kunit *test)
 {
-	return __mock_device(test, true);
+	return __mock_device(test, VC4_GEN_5);
 }

drivers/gpu/drm/vc4/vc4_bo.c

···
 {
 	struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	mutex_lock(&vc4->purgeable.lock);
···
 {
 	struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	/* list_del_init() is used here because the caller might release
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	struct vc4_bo *bo;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return ERR_PTR(-ENODEV);
 
 	bo = kzalloc(sizeof(*bo), GFP_KERNEL);
···
 	struct drm_gem_dma_object *dma_obj;
 	struct vc4_bo *bo;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return ERR_PTR(-ENODEV);
 
 	if (size == 0)
···
 	struct vc4_bo *bo = NULL;
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	ret = vc4_dumb_fixup_args(args);
···
 	struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev);
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	/* Fast path: if the BO is already retained by someone, no need to
···
 {
 	struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	/* Fast path: if the BO is still retained by someone, no need to test
···
 	struct vc4_bo *bo = NULL;
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	ret = vc4_grab_bin_bo(vc4, vc4file);
···
 	struct drm_vc4_mmap_bo *args = data;
 	struct drm_gem_object *gem_obj;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	gem_obj = drm_gem_object_lookup(file_priv, args->handle);
···
 	struct vc4_bo *bo = NULL;
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (args->size == 0)
···
 	struct vc4_bo *bo;
 	bool t_format;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (args->flags != 0)
···
 	struct drm_gem_object *gem_obj;
 	struct vc4_bo *bo;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (args->flags != 0 || args->modifier != 0)
···
 	int ret;
 	int i;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	/* Create the initial set of BO labels that the kernel will
···
 	struct drm_gem_object *gem_obj;
 	int ret = 0, label;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (!args->len)

drivers/gpu/drm/vc4/vc4_crtc.c

···
 	struct vc4_hvs *hvs = vc4->hvs;
 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
 	struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state);
+	unsigned int channel = vc4_crtc_state->assigned_channel;
 	unsigned int cob_size;
 	u32 val;
 	int fifo_lines;
···
 	 * Read vertical scanline which is currently composed for our
 	 * pixelvalve by the HVS, and also the scaler status.
 	 */
-	val = HVS_READ(SCALER_DISPSTATX(vc4_crtc_state->assigned_channel));
+	val = HVS_READ(SCALER_DISPSTATX(channel));
 
 	/* Get optional system timestamp after query. */
 	if (etime)
···
 		*vpos /= 2;
 
 		/* Use hpos to correct for field offset in interlaced mode. */
-		if (vc4_hvs_get_fifo_frame_count(hvs, vc4_crtc_state->assigned_channel) % 2)
+		if (vc4_hvs_get_fifo_frame_count(hvs, channel) % 2)
 			*hpos += mode->crtc_htotal / 2;
 	}
 
-	cob_size = vc4_crtc_get_cob_allocation(vc4, vc4_crtc_state->assigned_channel);
+	cob_size = vc4_crtc_get_cob_allocation(vc4, channel);
 	/* This is the offset we need for translating hvs -> pv scanout pos. */
 	fifo_lines = cob_size / mode->crtc_hdisplay;
 
···
 		 * Removing 1 from the FIFO full level however
 		 * seems to completely remove that issue.
 		 */
-		if (!vc4->is_vc5)
+		if (vc4->gen == VC4_GEN_4)
 			return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX - 1;
 
 		return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX;
···
 	if (is_dsi)
 		CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);
 
-	if (vc4->is_vc5)
+	if (vc4->gen == VC4_GEN_5)
 		CRTC_WRITE(PV_MUX_CFG,
 			   VC4_SET_FIELD(PV_MUX_CFG_RGB_PIXEL_MUX_MODE_NO_SWAP,
 					 PV_MUX_CFG_RGB_PIXEL_MUX_MODE));
···
 		if (conn_state->crtc != crtc)
 			continue;
 
-		vc4_state->margins.left = conn_state->tv.margins.left;
-		vc4_state->margins.right = conn_state->tv.margins.right;
-		vc4_state->margins.top = conn_state->tv.margins.top;
-		vc4_state->margins.bottom = conn_state->tv.margins.bottom;
+		if (memcmp(&vc4_state->margins, &conn_state->tv.margins,
+			   sizeof(vc4_state->margins))) {
+			memcpy(&vc4_state->margins, &conn_state->tv.margins,
+			       sizeof(vc4_state->margins));
+
+			/*
+			 * Need to force the dlist entries for all planes to be
+			 * updated so that the dest rectangles are changed.
+			 */
+			crtc_state->zpos_changed = true;
+		}
 		break;
 	}
 
···
 	struct dma_fence *fence;
 	int ret;
 
-	if (!vc4->is_vc5) {
+	if (vc4->gen == VC4_GEN_4) {
 		struct vc4_bo *bo = to_vc4_bo(&dma_bo->base);
 
 		return vc4_queue_seqno_cb(dev, &flip_state->cb.seqno, bo->seqno,
···
 	struct vc4_bo *bo = to_vc4_bo(&dma_bo->base);
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	/*
···
 		struct drm_device *dev = crtc->dev;
 		struct vc4_dev *vc4 = to_vc4_dev(dev);
 
-		if (vc4->is_vc5)
+		if (vc4->gen > VC4_GEN_4)
 			return vc5_async_page_flip(crtc, fb, event, flags);
 		else
 			return vc4_async_page_flip(crtc, fb, event, flags);
···
 
 	drm_crtc_helper_add(crtc, crtc_helper_funcs);
 
-	if (!vc4->is_vc5) {
+	if (vc4->gen == VC4_GEN_4) {
 		drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));
-
 		drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
 
 		/* We support CTM, but only for one CRTC at a time. It's therefore

drivers/gpu/drm/vc4/vc4_drv.c

···
 	if (args->pad != 0)
 		return -EINVAL;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (!vc4->v3d)
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	struct vc4_file *vc4file;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	vc4file = kzalloc(sizeof(*vc4file), GFP_KERNEL);
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	struct vc4_file *vc4file = file->driver_priv;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	if (vc4file->bin_bo_used)
···
 	struct vc4_dev *vc4;
 	struct device_node *node;
 	struct drm_crtc *crtc;
-	bool is_vc5;
+	enum vc4_gen gen;
 	int ret = 0;
 
 	dev->coherent_dma_mask = DMA_BIT_MASK(32);
 
-	is_vc5 = of_device_is_compatible(dev->of_node, "brcm,bcm2711-vc5");
-	if (is_vc5)
+	if (of_device_is_compatible(dev->of_node, "brcm,bcm2711-vc5"))
+		gen = VC4_GEN_5;
+	else
+		gen = VC4_GEN_4;
+
+	if (gen > VC4_GEN_4)
 		driver = &vc5_drm_driver;
 	else
 		driver = &vc4_drm_driver;
···
 	vc4 = devm_drm_dev_alloc(dev, driver, struct vc4_dev, base);
 	if (IS_ERR(vc4))
 		return PTR_ERR(vc4);
-	vc4->is_vc5 = is_vc5;
+	vc4->gen = gen;
 	vc4->dev = dev;
 
 	drm = &vc4->base;
 	platform_set_drvdata(pdev, drm);
 
-	if (!is_vc5) {
+	if (gen == VC4_GEN_4) {
 		ret = drmm_mutex_init(drm, &vc4->bin_bo_lock);
 		if (ret)
 			goto err;
···
 	if (ret)
 		goto err;
 
-	if (!is_vc5) {
+	if (gen == VC4_GEN_4) {
 		ret = vc4_gem_init(drm);
 		if (ret)
 			goto err;

drivers/gpu/drm/vc4/vc4_drv.h

···
 #include <drm/drm_debugfs.h>
 #include <drm/drm_device.h>
 #include <drm/drm_encoder.h>
+#include <drm/drm_fourcc.h>
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_mm.h>
···
 	u64 counters[] __counted_by(ncounters);
 };
 
+enum vc4_gen {
+	VC4_GEN_4,
+	VC4_GEN_5,
+};
+
 struct vc4_dev {
 	struct drm_device base;
 	struct device *dev;
 
-	bool is_vc5;
+	enum vc4_gen gen;
 
 	unsigned int irq;
 
···
 	struct platform_device *pdev;
 	void __iomem *regs;
 	u32 __iomem *dlist;
+	unsigned int dlist_mem_size;
 
 	struct clk *core_clk;
 
···
 	 */
 	u32 pos0_offset;
 	u32 pos2_offset;
-	u32 ptr0_offset;
+	u32 ptr0_offset[DRM_FORMAT_MAX_PLANES];
 	u32 lbm_offset;
 
 	/* Offset where the plane's dlist was last stored in the
···
 
 	/* Clipped coordinates of the plane on the display. */
 	int crtc_x, crtc_y, crtc_w, crtc_h;
-	/* Clipped area being scanned from in the FB. */
+	/* Clipped area being scanned from in the FB in u16.16 format */
 	u32 src_x, src_y;
 
 	u32 src_w[2], src_h[2];
···
 	enum vc4_scaling_mode x_scaling[2], y_scaling[2];
 	bool is_unity;
 	bool is_yuv;
-
-	/* Offset to start scanning out from the start of the plane's
-	 * BO.
-	 */
-	u32 offsets[3];
 
 	/* Our allocation in LBM for temporary storage during scaling. */
 	struct drm_mm_node lbm;
···
 	bool txp_armed;
 	unsigned int assigned_channel;
 
-	struct {
-		unsigned int left;
-		unsigned int right;
-		unsigned int top;
-		unsigned int bottom;
-	} margins;
+	struct drm_connector_tv_margins margins;
 
 	unsigned long hvs_load;
 
···
 
 /* vc4_hvs.c */
 extern struct platform_driver vc4_hvs_driver;
-struct vc4_hvs *__vc4_hvs_alloc(struct vc4_dev *vc4, struct platform_device *pdev);
+struct vc4_hvs *__vc4_hvs_alloc(struct vc4_dev *vc4,
+				void __iomem *regs,
+				struct platform_device *pdev);
 void vc4_hvs_stop_channel(struct vc4_hvs *hvs, unsigned int output);
 int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output);
 u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo);

drivers/gpu/drm/vc4/vc4_gem.c

···
 	u32 i;
 	int ret = 0;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (!vc4->v3d) {
···
 	unsigned long timeout_expire;
 	DEFINE_WAIT(wait);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (vc4->finished_seqno >= seqno)
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	struct vc4_exec_info *exec;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 again:
···
 	if (!exec)
 		return;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	/* A previous RCL may have written to one of our textures, and
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	bool was_empty = list_empty(&vc4->render_job_list);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	list_move_tail(&exec->head, &vc4->render_job_list);
···
 	unsigned long irqflags;
 	struct vc4_seqno_cb *cb, *cb_temp;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	spin_lock_irqsave(&vc4->job_lock, irqflags);
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	unsigned long irqflags;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	cb->func = func;
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	struct drm_vc4_wait_seqno *args = data;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	return vc4_wait_for_seqno_ioctl_helper(dev, args->seqno,
···
 	struct drm_gem_object *gem_obj;
 	struct vc4_bo *bo;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (args->pad != 0)
···
 				  args->shader_rec_size,
 				  args->bo_handle_count);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (!vc4->v3d) {
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	vc4->dma_fence_context = dma_fence_context_alloc(1);
···
 	struct vc4_bo *bo;
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	switch (args->madv) {

drivers/gpu/drm/vc4/vc4_hdmi.c

···
 	if (!drm_dev_enter(drm, &idx))
 		return -ENODEV;
 
+	WARN_ON(pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev));
+
 	drm_print_regset32(&p, &vc4_hdmi->hdmi_regset);
 	drm_print_regset32(&p, &vc4_hdmi->hd_regset);
 	drm_print_regset32(&p, &vc4_hdmi->cec_regset);
···
 	drm_print_regset32(&p, &vc4_hdmi->phy_regset);
 	drm_print_regset32(&p, &vc4_hdmi->ram_regset);
 	drm_print_regset32(&p, &vc4_hdmi->rm_regset);
+
+	pm_runtime_put(&vc4_hdmi->pdev->dev);
 
 	drm_dev_exit(idx);
 
···
 		   VC4_HD_VID_CTL_CLRRGB |
 		   VC4_HD_VID_CTL_UNDERFLOW_ENABLE |
 		   VC4_HD_VID_CTL_FRAME_COUNTER_RESET |
+		   VC4_HD_VID_CTL_BLANK_INSERT_EN |
 		   (vsync_pos ? 0 : VC4_HD_VID_CTL_VSYNC_LOW) |
 		   (hsync_pos ? 0 : VC4_HD_VID_CTL_HSYNC_LOW));
 
···
 	}
 
 	if (!vc4_hdmi_audio_can_stream(vc4_hdmi)) {
-		ret = -ENODEV;
+		ret = -ENOTSUPP;
 		goto out_dev_exit;
 	}
 
···
 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
 	struct drm_device *drm = vc4_hdmi->connector.dev;
 	struct drm_connector *connector = &vc4_hdmi->connector;
+	struct vc4_dev *vc4 = to_vc4_dev(drm);
 	unsigned int sample_rate = params->sample_rate;
 	unsigned int channels = params->channels;
 	unsigned long flags;
···
 					     VC4_HDMI_AUDIO_PACKET_CEA_MASK);
 
 	/* Set the MAI threshold */
-	HDMI_WRITE(HDMI_MAI_THR,
-		   VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_PANICHIGH) |
-		   VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_PANICLOW) |
-		   VC4_SET_FIELD(0x06, VC4_HD_MAI_THR_DREQHIGH) |
-		   VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_DREQLOW));
+	if (vc4->gen >= VC4_GEN_5)
+		HDMI_WRITE(HDMI_MAI_THR,
+			   VC4_SET_FIELD(0x10, VC4_HD_MAI_THR_PANICHIGH) |
+			   VC4_SET_FIELD(0x10, VC4_HD_MAI_THR_PANICLOW) |
+			   VC4_SET_FIELD(0x1c, VC4_HD_MAI_THR_DREQHIGH) |
+			   VC4_SET_FIELD(0x1c, VC4_HD_MAI_THR_DREQLOW));
+	else
+		HDMI_WRITE(HDMI_MAI_THR,
+			   VC4_SET_FIELD(0x8, VC4_HD_MAI_THR_PANICHIGH) |
+			   VC4_SET_FIELD(0x8, VC4_HD_MAI_THR_PANICLOW) |
+			   VC4_SET_FIELD(0x6, VC4_HD_MAI_THR_DREQHIGH) |
+			   VC4_SET_FIELD(0x8, VC4_HD_MAI_THR_DREQLOW));
 
 	HDMI_WRITE(HDMI_MAI_CONFIG,
 		   VC4_HDMI_MAI_CONFIG_BIT_REVERSE |

drivers/gpu/drm/vc4/vc4_hdmi_regs.h

···
 
 	field = &variant->registers[reg];
 	base = __vc4_hdmi_get_field_base(hdmi, field->reg);
-	if (!base)
+	if (!base) {
+		dev_warn(&hdmi->pdev->dev,
+			 "Unknown register ID %u\n", reg);
 		return;
+	}
 
 	writel(value, base + field->offset);
 }

drivers/gpu/drm/vc4/vc4_hvs.c

···
 #include "vc4_drv.h"
 #include "vc4_regs.h"
 
-static const struct debugfs_reg32 hvs_regs[] = {
+static const struct debugfs_reg32 vc4_hvs_regs[] = {
 	VC4_REG32(SCALER_DISPCTRL),
 	VC4_REG32(SCALER_DISPSTAT),
 	VC4_REG32(SCALER_DISPID),
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	struct vc4_hvs *hvs = vc4->hvs;
 	struct drm_printer p = drm_seq_file_printer(m);
-	unsigned int next_entry_start = 0;
+	unsigned int dlist_mem_size = hvs->dlist_mem_size;
+	unsigned int next_entry_start;
 	unsigned int i, j;
 	u32 dlist_word, dispstat;
 
···
 		}
 
 		drm_printf(&p, "HVS chan %u:\n", i);
+		next_entry_start = 0;
 
-		for (j = HVS_READ(SCALER_DISPLISTX(i)); j < 256; j++) {
+		for (j = HVS_READ(SCALER_DISPLISTX(i)); j < dlist_mem_size; j++) {
 			dlist_word = readl((u32 __iomem *)vc4->hvs->dlist + j);
 			drm_printf(&p, "dlist: %02d: 0x%08x\n", j,
 				   dlist_word);
···
 	if (!drm_dev_enter(drm, &idx))
 		return;
 
+	if (hvs->vc4->gen == VC4_GEN_4)
+		return;
+
 	/* The LUT memory is laid out with each HVS channel in order,
 	 * each of which takes 256 writes for R, 256 for G, then 256
 	 * for B.
···
 	u32 reg;
 	int ret;
 
-	if (!vc4->is_vc5)
+	switch (vc4->gen) {
+	case VC4_GEN_4:
 		return output;
 
-	/*
-	 * NOTE: We should probably use drm_dev_enter()/drm_dev_exit()
-	 * here, but this function is only used during the DRM device
-	 * initialization, so we should be fine.
-	 */
+	case VC4_GEN_5:
+		/*
+		 * NOTE: We should probably use
+		 * drm_dev_enter()/drm_dev_exit() here, but this
+		 * function is only used during the DRM device
+		 * initialization, so we should be fine.
+		 */
 
-	switch (output) {
-	case 0:
-		return 0;
+		switch (output) {
+		case 0:
+			return 0;
 
-	case 1:
-		return 1;
+		case 1:
+			return 1;
 
-	case 2:
-		reg = HVS_READ(SCALER_DISPECTRL);
-		ret = FIELD_GET(SCALER_DISPECTRL_DSP2_MUX_MASK, reg);
-		if (ret == 0)
-			return 2;
+		case 2:
+			reg = HVS_READ(SCALER_DISPECTRL);
+			ret = FIELD_GET(SCALER_DISPECTRL_DSP2_MUX_MASK, reg);
+			if (ret == 0)
+				return 2;
 
-		return 0;
+			return 0;
 
-	case 3:
-		reg = HVS_READ(SCALER_DISPCTRL);
-		ret = FIELD_GET(SCALER_DISPCTRL_DSP3_MUX_MASK, reg);
-		if (ret == 3)
+		case 3:
+			reg = HVS_READ(SCALER_DISPCTRL);
+			ret = FIELD_GET(SCALER_DISPCTRL_DSP3_MUX_MASK, reg);
+			if (ret == 3)
+				return -EPIPE;
+
+			return ret;
+
+		case 4:
+			reg = HVS_READ(SCALER_DISPEOLN);
+			ret = FIELD_GET(SCALER_DISPEOLN_DSP4_MUX_MASK, reg);
+			if (ret == 3)
+				return -EPIPE;
+
+			return ret;
+
+		case 5:
+			reg = HVS_READ(SCALER_DISPDITHER);
+			ret = FIELD_GET(SCALER_DISPDITHER_DSP5_MUX_MASK, reg);
+			if (ret == 3)
+				return -EPIPE;
+
+			return ret;
+
+		default:
 			return -EPIPE;
-
-		return ret;
-
-	case 4:
-		reg = HVS_READ(SCALER_DISPEOLN);
-		ret = FIELD_GET(SCALER_DISPEOLN_DSP4_MUX_MASK, reg);
-		if (ret == 3)
-			return -EPIPE;
-
-		return ret;
-
-	case 5:
-		reg = HVS_READ(SCALER_DISPDITHER);
-		ret = FIELD_GET(SCALER_DISPDITHER_DSP5_MUX_MASK, reg);
-		if (ret == 3)
-			return -EPIPE;
-
-		return ret;
+		}
 
 	default:
 		return -EPIPE;
···
 	dispctrl = SCALER_DISPCTRLX_ENABLE;
 	dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(chan));
 
-	if (!vc4->is_vc5) {
+	if (vc4->gen == VC4_GEN_4) {
 		dispctrl |= VC4_SET_FIELD(mode->hdisplay,
 					  SCALER_DISPCTRLX_WIDTH) |
 			    VC4_SET_FIELD(mode->vdisplay,
···
 	dispbkgndx &= ~SCALER_DISPBKGND_INTERLACE;
 
 	HVS_WRITE(SCALER_DISPBKGNDX(chan), dispbkgndx |
-		  ((!vc4->is_vc5) ? SCALER_DISPBKGND_GAMMA : 0) |
+		  ((vc4->gen == VC4_GEN_4) ? SCALER_DISPBKGND_GAMMA : 0) |
 		  (interlace ? SCALER_DISPBKGND_INTERLACE : 0));
 
 	/* Reload the LUT, since the SRAMs would have been disabled if
···
 	if (!drm_dev_enter(drm, &idx))
 		return;
 
-	if (HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_ENABLE)
+	if (!(HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_ENABLE))
 		goto out;
 
-	HVS_WRITE(SCALER_DISPCTRLX(chan),
-		  HVS_READ(SCALER_DISPCTRLX(chan)) | SCALER_DISPCTRLX_RESET);
-	HVS_WRITE(SCALER_DISPCTRLX(chan),
-		  HVS_READ(SCALER_DISPCTRLX(chan)) & ~SCALER_DISPCTRLX_ENABLE);
+	HVS_WRITE(SCALER_DISPCTRLX(chan), SCALER_DISPCTRLX_RESET);
+	HVS_WRITE(SCALER_DISPCTRLX(chan), 0);
 
 	/* Once we leave, the scaler should be disabled and its fifo empty. */
 	WARN_ON_ONCE(HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_RESET);
···
 	if (hweight32(crtc_state->connector_mask) > 1)
 		return -EINVAL;
 
-	drm_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state)
-		dlist_count += vc4_plane_dlist_size(plane_state);
+	drm_atomic_crtc_state_for_each_plane_state(plane, plane_state, crtc_state) {
+		u32 plane_dlist_count = vc4_plane_dlist_size(plane_state);
+
+		drm_dbg_driver(dev, "[CRTC:%d:%s] Found [PLANE:%d:%s] with DLIST size: %u\n",
+			       crtc->base.id, crtc->name,
+			       plane->base.id, plane->name,
+			       plane_dlist_count);
+
+		dlist_count += plane_dlist_count;
+	}
 
 	dlist_count++; /* Account for SCALER_CTL0_END. */
 
+	drm_dbg_driver(dev, "[CRTC:%d:%s] Allocating DLIST block with size: %u\n",
+		       crtc->base.id, crtc->name, dlist_count);
 	spin_lock_irqsave(&vc4->hvs->mm_lock, flags);
 	ret = drm_mm_insert_node(&vc4->hvs->dlist_mm, &vc4_state->mm,
 				 dlist_count);
 	spin_unlock_irqrestore(&vc4->hvs->mm_lock, flags);
-	if (ret)
+	if (ret) {
+		drm_err(dev, "Failed to allocate DLIST entry: %d\n", ret);
 		return ret;
+	}
 
 	return 0;
 }
···
 
 void vc4_hvs_mask_underrun(struct vc4_hvs *hvs, int channel)
 {
-	struct drm_device *drm = &hvs->vc4->base;
+	struct vc4_dev *vc4 = hvs->vc4;
+	struct drm_device *drm = &vc4->base;
 	u32 dispctrl;
 	int idx;
 
···
 		return;
 
 	dispctrl = HVS_READ(SCALER_DISPCTRL);
-	dispctrl &= ~(hvs->vc4->is_vc5 ? SCALER5_DISPCTRL_DSPEISLUR(channel) :
-					 SCALER_DISPCTRL_DSPEISLUR(channel));
+	dispctrl &= ~((vc4->gen == VC4_GEN_5) ?
+		      SCALER5_DISPCTRL_DSPEISLUR(channel) :
+		      SCALER_DISPCTRL_DSPEISLUR(channel));
 
 	HVS_WRITE(SCALER_DISPCTRL, dispctrl);
 
···
 
 void vc4_hvs_unmask_underrun(struct vc4_hvs *hvs, int channel)
 {
-	struct drm_device *drm = &hvs->vc4->base;
+	struct vc4_dev *vc4 = hvs->vc4;
+	struct drm_device *drm = &vc4->base;
 	u32 dispctrl;
 	int idx;
 
···
 		return;
 
 	dispctrl = HVS_READ(SCALER_DISPCTRL);
-	dispctrl |= (hvs->vc4->is_vc5 ? SCALER5_DISPCTRL_DSPEISLUR(channel) :
-					SCALER_DISPCTRL_DSPEISLUR(channel));
+	dispctrl |= ((vc4->gen == VC4_GEN_5) ?
+		     SCALER5_DISPCTRL_DSPEISLUR(channel) :
+		     SCALER_DISPCTRL_DSPEISLUR(channel));
 
 	HVS_WRITE(SCALER_DISPSTAT,
 		  SCALER_DISPSTAT_EUFLOW(channel));
···
 	control = HVS_READ(SCALER_DISPCTRL);
 
 	for (channel = 0; channel < SCALER_CHANNELS_COUNT; channel++) {
-		dspeislur = vc4->is_vc5 ? SCALER5_DISPCTRL_DSPEISLUR(channel) :
-					  SCALER_DISPCTRL_DSPEISLUR(channel);
+		dspeislur = (vc4->gen == VC4_GEN_5) ?
+			SCALER5_DISPCTRL_DSPEISLUR(channel) :
+			SCALER_DISPCTRL_DSPEISLUR(channel);
+
 		/* Interrupt masking is not always honored, so check it here. */
 		if (status & SCALER_DISPSTAT_EUFLOW(channel) &&
 		    control & dspeislur) {
···
 	if (!vc4->hvs)
 		return -ENODEV;
 
-	if (!vc4->is_vc5)
+	if (vc4->gen == VC4_GEN_4)
 		debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
 				    minor->debugfs_root,
 				    &vc4->load_tracker_enabled);
···
 	return 0;
 }
 
-struct vc4_hvs *__vc4_hvs_alloc(struct vc4_dev *vc4, struct platform_device *pdev)
+struct vc4_hvs *__vc4_hvs_alloc(struct vc4_dev *vc4,
+				void __iomem *regs,
+				struct platform_device *pdev)
 {
 	struct drm_device *drm = &vc4->base;
 	struct vc4_hvs *hvs;
···
 		return ERR_PTR(-ENOMEM);
 
 	hvs->vc4 = vc4;
+	hvs->regs = regs;
 	hvs->pdev = pdev;
 
 	spin_lock_init(&hvs->mm_lock);
···
 	 * our 16K), since we don't want to scramble the screen when
 	 * transitioning from the firmware's boot setup to runtime.
 	 */
+	hvs->dlist_mem_size = (SCALER_DLIST_SIZE >> 2) - HVS_BOOTLOADER_DLIST_END;
 	drm_mm_init(&hvs->dlist_mm,
 		    HVS_BOOTLOADER_DLIST_END,
-		    (SCALER_DLIST_SIZE >> 2) - HVS_BOOTLOADER_DLIST_END);
+		    hvs->dlist_mem_size);
 
 	/* Set up the HVS LBM memory manager.  We could have some more
 	 * complicated data structure that allowed reuse of LBM areas
 	 * between planes when they don't overlap on the screen, but
 	 * for now we just allocate globally.
 	 */
-	if (!vc4->is_vc5)
+	if (vc4->gen == VC4_GEN_4)
 		/* 48k words of 2x12-bit pixels */
 		drm_mm_init(&hvs->lbm_mm, 0, 48 * 1024);
 	else
···
 	return hvs;
 }
 
-static int vc4_hvs_bind(struct device *dev, struct device *master, void *data)
+static int vc4_hvs_hw_init(struct vc4_hvs *hvs)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct drm_device *drm = dev_get_drvdata(master);
-	struct vc4_dev *vc4 = to_vc4_dev(drm);
-	struct vc4_hvs *hvs = NULL;
-	int ret;
-	u32 dispctrl;
-	u32 reg, top;
+	struct vc4_dev *vc4 = hvs->vc4;
+	u32 dispctrl, reg;
 
-	hvs = __vc4_hvs_alloc(vc4, NULL);
-	if (IS_ERR(hvs))
-		return PTR_ERR(hvs);
-
-	hvs->regs = vc4_ioremap_regs(pdev, 0);
-	if (IS_ERR(hvs->regs))
-		return PTR_ERR(hvs->regs);
-
-	hvs->regset.base = hvs->regs;
-	hvs->regset.regs = hvs_regs;
-	hvs->regset.nregs = ARRAY_SIZE(hvs_regs);
-
-	if (vc4->is_vc5) {
-		struct rpi_firmware *firmware;
-		struct device_node *node;
-		unsigned int max_rate;
-
-		node = rpi_firmware_find_node();
-		if (!node)
-			return -EINVAL;
-
-		firmware = rpi_firmware_get(node);
-		of_node_put(node);
-		if (!firmware)
-			return -EPROBE_DEFER;
-
-		hvs->core_clk = devm_clk_get(&pdev->dev, NULL);
-		if (IS_ERR(hvs->core_clk)) {
-			dev_err(&pdev->dev, "Couldn't get core clock\n");
-			return PTR_ERR(hvs->core_clk);
-		}
-
-		max_rate = rpi_firmware_clk_get_max_rate(firmware,
-							 RPI_FIRMWARE_CORE_CLK_ID);
-		rpi_firmware_put(firmware);
-		if (max_rate >= 550000000)
-			hvs->vc5_hdmi_enable_hdmi_20 = true;
-
-		if (max_rate >= 600000000)
-			hvs->vc5_hdmi_enable_4096by2160 = true;
-
-		hvs->max_core_rate = max_rate;
-
-		ret = clk_prepare_enable(hvs->core_clk);
-		if (ret) {
-			dev_err(&pdev->dev, "Couldn't enable the core clock\n");
-			return ret;
-		}
-	}
-
-	if (!vc4->is_vc5)
-		hvs->dlist = hvs->regs + SCALER_DLIST_START;
-	else
-		hvs->dlist = hvs->regs + SCALER5_DLIST_START;
-
-	/* Upload filter kernels.  We only have the one for now, so we
-	 * keep it around for the lifetime of the driver.
-	 */
-	ret = vc4_hvs_upload_linear_kernel(hvs,
-					   &hvs->mitchell_netravali_filter,
-					   mitchell_netravali_1_3_1_3_kernel);
-	if (ret)
-		return ret;
+	dispctrl = HVS_READ(SCALER_DISPCTRL);
+	dispctrl |= SCALER_DISPCTRL_ENABLE;
+	HVS_WRITE(SCALER_DISPCTRL, dispctrl);
 
 	reg = HVS_READ(SCALER_DISPECTRL);
 	reg &= ~SCALER_DISPECTRL_DSP2_MUX_MASK;
···
 		  reg | VC4_SET_FIELD(3, SCALER_DISPDITHER_DSP5_MUX));
 
 	dispctrl = HVS_READ(SCALER_DISPCTRL);
-
-	dispctrl |= SCALER_DISPCTRL_ENABLE;
 	dispctrl |= SCALER_DISPCTRL_DISPEIRQ(0) |
 		    SCALER_DISPCTRL_DISPEIRQ(1) |
 		    SCALER_DISPCTRL_DISPEIRQ(2);
 
-	if (!vc4->is_vc5)
+	if (vc4->gen == VC4_GEN_4)
 		dispctrl &= ~(SCALER_DISPCTRL_DMAEIRQ |
 			      SCALER_DISPCTRL_SLVWREIRQ |
 			      SCALER_DISPCTRL_SLVRDEIRQ |
···
 	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_PANIC1);
 	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_PANIC2);
 
+	/* Set AXI panic mode.
+	 * VC4 panics when < 2 lines in FIFO.
+	 * VC5 panics when less than 1 line in the FIFO.
+	 */
+	dispctrl &= ~(SCALER_DISPCTRL_PANIC0_MASK |
+		      SCALER_DISPCTRL_PANIC1_MASK |
+		      SCALER_DISPCTRL_PANIC2_MASK);
+	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_PANIC0);
+	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_PANIC1);
+	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_PANIC2);
+
 	HVS_WRITE(SCALER_DISPCTRL, dispctrl);
 
-	/* Recompute Composite Output Buffer (COB) allocations for the displays
+	return 0;
+}
+
+static int vc4_hvs_cob_init(struct vc4_hvs *hvs)
+{
+	struct vc4_dev *vc4 = hvs->vc4;
+	u32 reg, top;
+
+	/*
+	 * Recompute Composite Output Buffer (COB) allocations for the
+	 * displays
 	 */
-	if (!vc4->is_vc5) {
+	switch (vc4->gen) {
+	case VC4_GEN_4:
 		/* The COB is 20736 pixels, or just over 10 lines at 2048 wide.
 		 * The bottom 2048 pixels are full 32bpp RGBA (intended for the
 		 * TXP composing RGBA to memory), whilst the remainder are only
···
 		top = VC4_COB_SIZE;
 		reg |= (top - 1) << 16;
 		HVS_WRITE(SCALER_DISPBASE0, reg);
-	} else {
+		break;
+
+	case VC4_GEN_5:
 		/* The COB is 44416 pixels, or 10.8 lines at 4096 wide.
 		 * The bottom 4096 pixels are full RGBA (intended for the TXP
 		 * composing RGBA to memory), whilst the remainder are only
···
 		top = VC5_COB_SIZE;
 		reg |= top << 16;
 		HVS_WRITE(SCALER_DISPBASE0, reg);
+		break;
+
+	default:
+		return -EINVAL;
 	}
+
+	return 0;
+}
+
+static int vc4_hvs_bind(struct device *dev, struct device *master, void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *drm = dev_get_drvdata(master);
+	struct vc4_dev *vc4 = to_vc4_dev(drm);
+	struct vc4_hvs *hvs = NULL;
+	void __iomem *regs;
+	int ret;
+
+	regs = vc4_ioremap_regs(pdev, 0);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	hvs = __vc4_hvs_alloc(vc4, regs, pdev);
+	if (IS_ERR(hvs))
+		return PTR_ERR(hvs);
+
+	hvs->regset.base = hvs->regs;
+	hvs->regset.regs = vc4_hvs_regs;
+	hvs->regset.nregs = ARRAY_SIZE(vc4_hvs_regs);
+
+	if (vc4->gen == VC4_GEN_5) {
+		struct rpi_firmware *firmware;
+		struct device_node *node;
+		unsigned int max_rate;
+
+		node = rpi_firmware_find_node();
+		if (!node)
+			return -EINVAL;
+
+		firmware = rpi_firmware_get(node);
+		of_node_put(node);
+		if (!firmware)
+			return -EPROBE_DEFER;
+
+		hvs->core_clk = devm_clk_get(&pdev->dev, NULL);
+		if (IS_ERR(hvs->core_clk)) {
+			dev_err(&pdev->dev, "Couldn't get core clock\n");
+			return PTR_ERR(hvs->core_clk);
+		}
+
+		max_rate = rpi_firmware_clk_get_max_rate(firmware,
+							 RPI_FIRMWARE_CORE_CLK_ID);
+		rpi_firmware_put(firmware);
+		if (max_rate >= 550000000)
+			hvs->vc5_hdmi_enable_hdmi_20 = true;
+
+		if (max_rate >= 600000000)
+			hvs->vc5_hdmi_enable_4096by2160 = true;
+
+		hvs->max_core_rate = max_rate;
+
+		ret = clk_prepare_enable(hvs->core_clk);
+		if (ret) {
+			dev_err(&pdev->dev, "Couldn't enable the core clock\n");
+			return ret;
+		}
+	}
+
+	if (vc4->gen == VC4_GEN_4)
+		hvs->dlist = hvs->regs + SCALER_DLIST_START;
+	else
+		hvs->dlist = hvs->regs + SCALER5_DLIST_START;
+
+	ret = vc4_hvs_hw_init(hvs);
+	if (ret)
+		return ret;
+
+	/* Upload filter kernels.  We only have the one for now, so we
+	 * keep it around for the lifetime of the driver.
+	 */
+	ret = vc4_hvs_upload_linear_kernel(hvs,
+					   &hvs->mitchell_netravali_filter,
+					   mitchell_netravali_1_3_1_3_kernel);
+	if (ret)
+		return ret;
+
+	ret = vc4_hvs_cob_init(hvs);
+	if (ret)
+		return ret;
 
 	ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
 			       vc4_hvs_irq_handler, 0, "vc4 hvs", drm);

drivers/gpu/drm/vc4/vc4_irq.c

···
 {
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	if (!vc4->v3d)
···
 {
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	if (!vc4->v3d)
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (irq == IRQ_NOTCONNECTED)
···
 {
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	vc4_irq_disable(dev);
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	unsigned long irqflags;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	/* Acknowledge any stale IRQs. */

drivers/gpu/drm/vc4/vc4_kms.c

···
 		old_hvs_state->fifo_state[channel].pending_commit = NULL;
 	}
 
-	if (vc4->is_vc5) {
+	if (vc4->gen == VC4_GEN_5) {
 		unsigned long state_rate = max(old_hvs_state->core_clock_rate,
 					       new_hvs_state->core_clock_rate);
 		unsigned long core_rate = clamp_t(unsigned long, state_rate,
···
 
 	vc4_ctm_commit(vc4, state);
 
-	if (vc4->is_vc5)
+	if (vc4->gen == VC4_GEN_5)
 		vc5_hvs_pv_muxing_commit(vc4, state);
 	else
 		vc4_hvs_pv_muxing_commit(vc4, state);
···
 
 	drm_atomic_helper_cleanup_planes(dev, state);
 
-	if (vc4->is_vc5) {
+	if (vc4->gen == VC4_GEN_5) {
 		unsigned long core_rate = min_t(unsigned long,
 						hvs->max_core_rate,
 						new_hvs_state->core_clock_rate);
···
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 	struct drm_mode_fb_cmd2 mode_cmd_local;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return ERR_PTR(-ENODEV);
 
 	/* If the user didn't specify a modifier, use the
···
 	 * the BCM2711, but the load tracker computations are used for
 	 * the core clock rate calculation.
 	 */
-	if (!vc4->is_vc5) {
+	if (vc4->gen == VC4_GEN_4) {
 		/* Start with the load tracker enabled. Can be
 		 * disabled through the debugfs load_tracker file.
 		 */
···
 		return ret;
 	}
 
-	if (vc4->is_vc5) {
+	if (vc4->gen == VC4_GEN_5) {
 		dev->mode_config.max_width = 7680;
 		dev->mode_config.max_height = 7680;
 	} else {
···
 		dev->mode_config.max_height = 2048;
 	}
 
-	dev->mode_config.funcs = vc4->is_vc5 ? &vc5_mode_funcs : &vc4_mode_funcs;
+	dev->mode_config.funcs = (vc4->gen > VC4_GEN_4) ? &vc5_mode_funcs : &vc4_mode_funcs;
 	dev->mode_config.helper_private = &vc4_mode_config_helpers;
 	dev->mode_config.preferred_depth = 24;
 	dev->mode_config.async_page_flip = true;

drivers/gpu/drm/vc4/vc4_perfmon.c

···
 		return;
 
 	vc4 = perfmon->dev;
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	refcount_inc(&perfmon->refcnt);
···
 		return;
 
 	vc4 = perfmon->dev;
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	if (refcount_dec_and_test(&perfmon->refcnt))
···
 	unsigned int i;
 	u32 mask;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	if (WARN_ON_ONCE(!perfmon || vc4->active_perfmon))
···
 {
 	unsigned int i;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	if (WARN_ON_ONCE(!vc4->active_perfmon ||
···
 	struct vc4_dev *vc4 = vc4file->dev;
 	struct vc4_perfmon *perfmon;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return NULL;
 
 	mutex_lock(&vc4file->perfmon.lock);
···
 {
 	struct vc4_dev *vc4 = vc4file->dev;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	mutex_init(&vc4file->perfmon.lock);
···
 {
 	struct vc4_dev *vc4 = vc4file->dev;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	mutex_lock(&vc4file->perfmon.lock);
···
 	unsigned int i;
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (!vc4->v3d) {
···
 	struct drm_vc4_perfmon_destroy *req = data;
 	struct vc4_perfmon *perfmon;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (!vc4->v3d) {
···
 	struct vc4_perfmon *perfmon;
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (!vc4->v3d) {

drivers/gpu/drm/vc4/vc4_plane.c

···
 		.pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB,
 	},
 	{
+		.drm = DRM_FORMAT_YUV444,
+		.hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_3PLANE,
+		.pixel_order = HVS_PIXEL_ORDER_XYCBCR,
+		.pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR,
+	},
+	{
+		.drm = DRM_FORMAT_YVU444,
+		.hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_3PLANE,
+		.pixel_order = HVS_PIXEL_ORDER_XYCRCB,
+		.pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB,
+	},
+	{
 		.drm = DRM_FORMAT_YUV420,
 		.hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_3PLANE,
 		.pixel_order = HVS_PIXEL_ORDER_XYCBCR,
···
 
 static enum vc4_scaling_mode vc4_get_scaling_mode(u32 src, u32 dst)
 {
-	if (dst == src)
+	if (dst == src >> 16)
 		return VC4_SCALING_NONE;
-	if (3 * dst >= 2 * src)
+	if (3 * dst >= 2 * (src >> 16))
 		return VC4_SCALING_PPF;
 	else
 		return VC4_SCALING_TPZ;
···
 {
 	struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
 	struct drm_framebuffer *fb = state->fb;
-	struct drm_gem_dma_object *bo;
 	int num_planes = fb->format->num_planes;
 	struct drm_crtc_state *crtc_state;
 	u32 h_subsample = fb->format->hsub;
 	u32 v_subsample = fb->format->vsub;
-	int i, ret;
+	int ret;
 
 	crtc_state = drm_atomic_get_existing_crtc_state(state->state,
 							state->crtc);
···
 	if (ret)
 		return ret;
 
-	for (i = 0; i < num_planes; i++) {
-		bo = drm_fb_dma_get_gem_obj(fb, i);
-		vc4_state->offsets[i] = bo->dma_addr + fb->offsets[i];
-	}
-
-	/*
-	 * We don't support subpixel source positioning for scaling,
-	 * but fractional coordinates can be generated by clipping
-	 * so just round for now
-	 */
-	vc4_state->src_x = DIV_ROUND_CLOSEST(state->src.x1, 1 << 16);
-	vc4_state->src_y = DIV_ROUND_CLOSEST(state->src.y1, 1 << 16);
-	vc4_state->src_w[0] = DIV_ROUND_CLOSEST(state->src.x2, 1 << 16) - vc4_state->src_x;
-	vc4_state->src_h[0] = DIV_ROUND_CLOSEST(state->src.y2, 1 << 16) - vc4_state->src_y;
+	vc4_state->src_x = state->src.x1;
+	vc4_state->src_y = state->src.y1;
+	vc4_state->src_w[0] = state->src.x2 - vc4_state->src_x;
+	vc4_state->src_h[0] = state->src.y2 - vc4_state->src_y;
 
 	vc4_state->crtc_x = state->dst.x1;
 	vc4_state->crtc_y = state->dst.y1;
···
 		 */
 		if (vc4_state->x_scaling[1] == VC4_SCALING_NONE)
 			vc4_state->x_scaling[1] = VC4_SCALING_PPF;
+
+		/* Similarly UV needs vertical scaling to be enabled.
+		 * Without this a 1:1 scaled YUV422 plane isn't rendered.
+		 */
+		if (vc4_state->y_scaling[1] == VC4_SCALING_NONE)
+			vc4_state->y_scaling[1] = VC4_SCALING_PPF;
 	} else {
 		vc4_state->is_yuv = false;
 		vc4_state->x_scaling[1] = VC4_SCALING_NONE;
···
 {
 	u32 scale, recip;
 
-	scale = (1 << 16) * src / dst;
+	scale = src / dst;
 
 	/* The specs note that while the reciprocal would be defined
 	 * as (1<<32)/scale, ~0 is close enough.
···
 			VC4_SET_FIELD(recip, SCALER_TPZ1_RECIP));
 }
 
-static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst)
+/* phase magnitude bits */
+#define PHASE_BITS 6
+
+static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst,
+			  u32 xy, int channel)
 {
-	u32 scale = (1 << 16) * src / dst;
+	u32 scale = src / dst;
+	s32 offset, offset2;
+	s32 phase;
+
+	/*
+	 * Start the phase at 1/2 pixel from the 1st pixel at src_x.
+	 * 1/4 pixel for YUV.
+	 */
+	if (channel) {
+		/*
+		 * The phase is relative to scale_src->x, so shift it for
+		 * display list's x value
+		 */
+		offset = (xy & 0x1ffff) >> (16 - PHASE_BITS) >> 1;
+		offset += -(1 << PHASE_BITS >> 2);
+	} else {
+		/*
+		 * The phase is relative to scale_src->x, so shift it for
+		 * display list's x value
+		 */
+		offset = (xy & 0xffff) >> (16 - PHASE_BITS);
+		offset += -(1 << PHASE_BITS >> 1);
+
+		/*
+		 * This is a kludge to make sure the scaling factors are
+		 * consistent with YUV's luma scaling. We lose 1-bit precision
+		 * because of this.
+		 */
+		scale &= ~1;
+	}
+
+	/*
+	 * There may be a also small error introduced by precision of scale.
+	 * Add half of that as a compromise
+	 */
+	offset2 = src - dst * scale;
+	offset2 >>= 16 - PHASE_BITS;
+	phase = offset + (offset2 >> 1);
+
+	/* Ensure +ve values don't touch the sign bit, then truncate negative values */
+	if (phase >= 1 << PHASE_BITS)
+		phase = (1 << PHASE_BITS) - 1;
+
+	phase &= SCALER_PPF_IPHASE_MASK;
 
 	vc4_dlist_write(vc4_state,
 			SCALER_PPF_AGC |
 			VC4_SET_FIELD(scale, SCALER_PPF_SCALE) |
-			VC4_SET_FIELD(0, SCALER_PPF_IPHASE));
+			VC4_SET_FIELD(phase, SCALER_PPF_IPHASE));
 }
 
 static u32 vc4_lbm_size(struct drm_plane_state *state)
···
 	if (vc4_state->x_scaling[0] == VC4_SCALING_TPZ)
 		pix_per_line = vc4_state->crtc_w;
 	else
-		pix_per_line = vc4_state->src_w[0];
+		pix_per_line = vc4_state->src_w[0] >> 16;
 
 	if (!vc4_state->is_yuv) {
 		if (vc4_state->y_scaling[0] == VC4_SCALING_TPZ)
···
 	}
 
 	/* Align it to 64 or 128 (hvs5) bytes */
-	lbm = roundup(lbm, vc4->is_vc5 ? 128 : 64);
+	lbm = roundup(lbm, vc4->gen == VC4_GEN_5 ? 128 : 64);
 
 	/* Each "word" of the LBM memory contains 2 or 4 (hvs5) pixels */
-	lbm /= vc4->is_vc5 ? 4 : 2;
+	lbm /= vc4->gen == VC4_GEN_5 ? 4 : 2;
 
 	return lbm;
 }
···
 
 	/* Ch0 H-PPF Word 0: Scaling Parameters */
 	if (vc4_state->x_scaling[channel] == VC4_SCALING_PPF) {
-		vc4_write_ppf(vc4_state,
-			      vc4_state->src_w[channel], vc4_state->crtc_w);
+		vc4_write_ppf(vc4_state, vc4_state->src_w[channel],
+			      vc4_state->crtc_w, vc4_state->src_x, channel);
 	}
 
 	/* Ch0 V-PPF Words 0-1: Scaling Parameters, Context */
 	if (vc4_state->y_scaling[channel] == VC4_SCALING_PPF) {
-		vc4_write_ppf(vc4_state,
-			      vc4_state->src_h[channel], vc4_state->crtc_h);
+		vc4_write_ppf(vc4_state, vc4_state->src_h[channel],
+			      vc4_state->crtc_h, vc4_state->src_y, channel);
 		vc4_dlist_write(vc4_state, 0xc0c0c0c0);
 	}
 
 	/* Ch0 H-TPZ Words 0-1: Scaling Parameters, Recip */
 	if (vc4_state->x_scaling[channel] == VC4_SCALING_TPZ) {
-		vc4_write_tpz(vc4_state,
-			      vc4_state->src_w[channel], vc4_state->crtc_w);
+		vc4_write_tpz(vc4_state, vc4_state->src_w[channel],
+			      vc4_state->crtc_w);
 	}
 
 	/* Ch0 V-TPZ Words 0-2: Scaling Parameters, Recip, Context */
 	if (vc4_state->y_scaling[channel] == VC4_SCALING_TPZ) {
-		vc4_write_tpz(vc4_state,
-			      vc4_state->src_h[channel], vc4_state->crtc_h);
+		vc4_write_tpz(vc4_state, vc4_state->src_h[channel],
+			      vc4_state->crtc_h);
 		vc4_dlist_write(vc4_state, 0xc0c0c0c0);
 	}
 }
···
 	for (i = 0; i < fb->format->num_planes; i++) {
 		/* Even if the bandwidth/plane required for a single frame is
 		 *
-		 * vc4_state->src_w[i] * vc4_state->src_h[i] * cpp * vrefresh
+		 * (vc4_state->src_w[i] >> 16) * (vc4_state->src_h[i] >> 16) *
+		 *  cpp * vrefresh
 		 *
 		 * when downscaling, we have to read more pixels per line in
 		 * the time frame reserved for a single line, so the bandwidth
···
 		 * load by this number. We're likely over-estimating the read
 		 * demand, but that's better than under-estimating it.
 		 */
-		vscale_factor = DIV_ROUND_UP(vc4_state->src_h[i],
+		vscale_factor = DIV_ROUND_UP(vc4_state->src_h[i] >> 16,
 					     vc4_state->crtc_h);
-		vc4_state->membus_load += vc4_state->src_w[i] *
-					  vc4_state->src_h[i] * vscale_factor *
-					  fb->format->cpp[i];
+		vc4_state->membus_load += (vc4_state->src_w[i] >> 16) *
+					  (vc4_state->src_h[i] >> 16) *
+					  vscale_factor * fb->format->cpp[i];
 		vc4_state->hvs_load += vc4_state->crtc_h * vc4_state->crtc_w;
 	}
 
···
 
 static int vc4_plane_allocate_lbm(struct drm_plane_state *state)
 {
-	struct vc4_dev *vc4 = to_vc4_dev(state->plane->dev);
+	struct drm_device *drm = state->plane->dev;
+	struct vc4_dev *vc4 = to_vc4_dev(drm);
+	struct drm_plane *plane = state->plane;
 	struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
 	unsigned long irqflags;
 	u32 lbm_size;
···
 	lbm_size = vc4_lbm_size(state);
 	if (!lbm_size)
 		return 0;
+
+	if (vc4->gen == VC4_GEN_5)
+		lbm_size = ALIGN(lbm_size, 64);
+	else if (vc4->gen == VC4_GEN_4)
+		lbm_size = ALIGN(lbm_size, 32);
+
+	drm_dbg_driver(drm, "[PLANE:%d:%s] LBM Allocation Size: %u\n",
+		       plane->base.id, plane->name, lbm_size);
 
 	if (WARN_ON(!vc4_state->lbm_offset))
 		return -EINVAL;
···
 		spin_lock_irqsave(&vc4->hvs->mm_lock, irqflags);
 		ret = drm_mm_insert_node_generic(&vc4->hvs->lbm_mm,
 						 &vc4_state->lbm,
-						 lbm_size,
-						 vc4->is_vc5 ? 64 : 32,
+						 lbm_size, 1,
 						 0, 0);
 		spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags);
 
-		if (ret)
+		if (ret) {
+			drm_err(drm, "Failed to allocate LBM entry: %d\n", ret);
 			return ret;
+		}
 	} else {
 		WARN_ON_ONCE(lbm_size != vc4_state->lbm.size);
 	}
···
 	bool mix_plane_alpha;
 	bool covers_screen;
 	u32 scl0, scl1, pitch0;
-	u32 tiling, src_y;
+	u32 tiling, src_x, src_y;
+	u32 width, height;
 	u32 hvs_format = format->hvs;
 	unsigned int rotation;
+	u32 offsets[3] = { 0 };
 	int ret, i;
 
 	if (vc4_state->dlist_initialized)
···
 	ret = vc4_plane_setup_clipping_and_scaling(state);
 	if (ret)
 		return ret;
+
+	width = vc4_state->src_w[0] >> 16;
+	height = vc4_state->src_h[0] >> 16;
 
 	/* SCL1 is used for Cb/Cr scaling of planar formats.  For RGB
 	 * and 4:4:4, scl1 should be set to scl0 so both channels of
···
 					 DRM_MODE_REFLECT_Y);
 
 	/* We must point to the last line when Y reflection is enabled. */
-	src_y = vc4_state->src_y;
+	src_y = vc4_state->src_y >> 16;
 	if (rotation & DRM_MODE_REFLECT_Y)
-		src_y += vc4_state->src_h[0] - 1;
+		src_y += height - 1;
+
+	src_x = vc4_state->src_x >> 16;
 
 	switch (base_format_mod) {
 	case DRM_FORMAT_MOD_LINEAR:
···
 		 * out.
 		 */
 		for (i = 0; i < num_planes; i++) {
-			vc4_state->offsets[i] += src_y /
-						 (i ? v_subsample : 1) *
-						 fb->pitches[i];
-
-			vc4_state->offsets[i] += vc4_state->src_x /
-						 (i ? h_subsample : 1) *
-						 fb->format->cpp[i];
+			offsets[i] += src_y / (i ? v_subsample : 1) * fb->pitches[i];
+			offsets[i] += src_x / (i ? h_subsample : 1) * fb->format->cpp[i];
 		}
 
 		break;
···
 		 *	pitch * tile_h == tile_size * tiles_per_row
 		 */
 		u32 tiles_w = fb->pitches[0] >> (tile_size_shift - tile_h_shift);
-		u32 tiles_l = vc4_state->src_x >> tile_w_shift;
+		u32 tiles_l = src_x >> tile_w_shift;
 		u32 tiles_r = tiles_w - tiles_l;
 		u32 tiles_t = src_y >> tile_h_shift;
 		/* Intra-tile offsets, which modify the base address (the
···
 		u32 tile_y = (src_y >> 4) & 1;
 		u32 subtile_y = (src_y >> 2) & 3;
 		u32 utile_y = src_y & 3;
-		u32 x_off = vc4_state->src_x & tile_w_mask;
+		u32 x_off = src_x & tile_w_mask;
 		u32 y_off = src_y & tile_h_mask;
 
 		/* When Y reflection is requested we must set the
···
 			   VC4_SET_FIELD(y_off, SCALER_PITCH0_TILE_Y_OFFSET) |
 			   VC4_SET_FIELD(tiles_l, SCALER_PITCH0_TILE_WIDTH_L) |
 			   VC4_SET_FIELD(tiles_r, SCALER_PITCH0_TILE_WIDTH_R));
-		vc4_state->offsets[0] += tiles_t * (tiles_w << tile_size_shift);
-		vc4_state->offsets[0] += subtile_y << 8;
-		vc4_state->offsets[0] += utile_y << 4;
+		offsets[0] += tiles_t * (tiles_w << tile_size_shift);
+		offsets[0] += subtile_y << 8;
+		offsets[0] += utile_y << 4;
 
 		/* Rows of tiles alternate left-to-right and right-to-left. */
 		if (tiles_t & 1) {
 			pitch0 |= SCALER_PITCH0_TILE_INITIAL_LINE_DIR;
-			vc4_state->offsets[0] += (tiles_w - tiles_l) <<
-						 tile_size_shift;
-			vc4_state->offsets[0] -= (1 + !tile_y) << 10;
+			offsets[0] += (tiles_w - tiles_l) << tile_size_shift;
+			offsets[0] -= (1 + !tile_y) << 10;
 		} else {
-			vc4_state->offsets[0] += tiles_l << tile_size_shift;
-			vc4_state->offsets[0] += tile_y << 10;
+			offsets[0] += tiles_l << tile_size_shift;
+			offsets[0] += tile_y << 10;
 		}
 
 		break;
···
 				 * of the 12-pixels in that 128-bit word is the
 				 * first pixel to be used
 				 */
-				u32 remaining_pixels = vc4_state->src_x % 96;
+				u32 remaining_pixels = src_x % 96;
 				u32 aligned = remaining_pixels / 12;
 				u32 last_bits = remaining_pixels % 12;
 
···
 					return -EINVAL;
 				}
 				pix_per_tile = tile_w / fb->format->cpp[0];
-				x_off = (vc4_state->src_x % pix_per_tile) /
+				x_off = (src_x % pix_per_tile) /
 					(i ? h_subsample : 1) *
 					fb->format->cpp[i];
 			}
 
-			tile = vc4_state->src_x / pix_per_tile;
+			tile = src_x / pix_per_tile;
 
-			vc4_state->offsets[i] += param * tile_w * tile;
-			vc4_state->offsets[i] += src_y /
-						 (i ? v_subsample : 1) *
-						 tile_w;
-			vc4_state->offsets[i] += x_off & ~(i ? 1 : 0);
+			offsets[i] += param * tile_w * tile;
+			offsets[i] += src_y / (i ? v_subsample : 1) * tile_w;
+			offsets[i] += x_off & ~(i ? 1 : 0);
 		}
 
 		pitch0 = VC4_SET_FIELD(param, SCALER_TILE_HEIGHT);
···
 		return -EINVAL;
 	}
 
+	/* fetch an extra pixel if we don't actually line up with the left edge. */
+	if ((vc4_state->src_x & 0xffff) && vc4_state->src_x < (state->fb->width << 16))
+		width++;
+
+	/* same for the right side */
+	if (((vc4_state->src_x + vc4_state->src_w[0]) & 0xffff) &&
+	    vc4_state->src_x + vc4_state->src_w[0] < (state->fb->width << 16))
+		width++;
+
+	/* now for the top */
+	if ((vc4_state->src_y & 0xffff) && vc4_state->src_y < (state->fb->height << 16))
+		height++;
+
+	/* and the bottom */
+	if (((vc4_state->src_y + vc4_state->src_h[0]) & 0xffff) &&
+	    vc4_state->src_y + vc4_state->src_h[0] < (state->fb->height << 16))
+		height++;
+
+	/* For YUV444 the hardware wants double the width, otherwise it doesn't
+	 * fetch full width of chroma
+	 */
+	if (format->drm == DRM_FORMAT_YUV444 || format->drm == DRM_FORMAT_YVU444)
+		width <<= 1;
+
 	/* Don't waste cycles mixing with plane alpha if the set alpha
 	 * is opaque or there is no per-pixel alpha information.
 	 * In any case we use the alpha property value as the fixed alpha.
···
 	mix_plane_alpha = state->alpha != DRM_BLEND_ALPHA_OPAQUE &&
 			  fb->format->has_alpha;
 
-	if (!vc4->is_vc5) {
+	if (vc4->gen == VC4_GEN_4) {
 	/* Control word */
 		vc4_dlist_write(vc4_state,
 				SCALER_CTL0_VALID |
···
 		vc4_dlist_write(vc4_state,
 				(mix_plane_alpha ? SCALER_POS2_ALPHA_MIX : 0) |
 				vc4_hvs4_get_alpha_blend_mode(state) |
-				VC4_SET_FIELD(vc4_state->src_w[0],
-					      SCALER_POS2_WIDTH) |
-				VC4_SET_FIELD(vc4_state->src_h[0],
-					      SCALER_POS2_HEIGHT));
+				VC4_SET_FIELD(width, SCALER_POS2_WIDTH) |
+				VC4_SET_FIELD(height, SCALER_POS2_HEIGHT));
 
 		/* Position Word 3: Context.  Written by the HVS. */
 		vc4_dlist_write(vc4_state, 0xc0c0c0c0);
···
 		/* Position Word 2: Source Image Size */
 		vc4_state->pos2_offset = vc4_state->dlist_count;
 		vc4_dlist_write(vc4_state,
-				VC4_SET_FIELD(vc4_state->src_w[0],
-					      SCALER5_POS2_WIDTH) |
-				VC4_SET_FIELD(vc4_state->src_h[0],
-					      SCALER5_POS2_HEIGHT));
+				VC4_SET_FIELD(width, SCALER5_POS2_WIDTH) |
+				VC4_SET_FIELD(height, SCALER5_POS2_HEIGHT));
 
 		/* Position Word 3: Context.  Written by the HVS. */
 		vc4_dlist_write(vc4_state, 0xc0c0c0c0);
···
 	 *
 	 * The pointers may be any byte address.
 	 */
-	vc4_state->ptr0_offset = vc4_state->dlist_count;
-	for (i = 0; i < num_planes; i++)
-		vc4_dlist_write(vc4_state, vc4_state->offsets[i]);
+	vc4_state->ptr0_offset[0] = vc4_state->dlist_count;
+
+	for (i = 0; i < num_planes; i++) {
+		struct drm_gem_dma_object *bo = drm_fb_dma_get_gem_obj(fb, i);
+
+		vc4_dlist_write(vc4_state, bo->dma_addr + fb->offsets[i] + offsets[i]);
+	}
 
 	/* Pointer Context Word 0/1/2: Written by the HVS */
 	for (i = 0; i < num_planes; i++)
···
 	if (ret)
 		return ret;
 
-	return vc4_plane_allocate_lbm(new_plane_state);
+	ret = vc4_plane_allocate_lbm(new_plane_state);
+	if (ret)
+		return ret;
+
+	return 0;
 }
 
 static void vc4_plane_atomic_update(struct drm_plane *plane,
···
 	 * scanout will start from this address as soon as the FIFO
 	 * needs to refill with pixels.
 	 */
-	writel(addr, &vc4_state->hw_dlist[vc4_state->ptr0_offset]);
+	writel(addr, &vc4_state->hw_dlist[vc4_state->ptr0_offset[0]]);
 
 	/* Also update the CPU-side dlist copy, so that any later
 	 * atomic updates that don't do a new modeset on our plane
 	 * also use our updated address.
 	 */
-	vc4_state->dlist[vc4_state->ptr0_offset] = addr;
+	vc4_state->dlist[vc4_state->ptr0_offset[0]] = addr;
 
 	drm_dev_exit(idx);
 }
···
 	       sizeof(vc4_state->y_scaling));
 	vc4_state->is_unity = new_vc4_state->is_unity;
 	vc4_state->is_yuv = new_vc4_state->is_yuv;
-	memcpy(vc4_state->offsets, new_vc4_state->offsets,
-	       sizeof(vc4_state->offsets));
 	vc4_state->needs_bg_fill = new_vc4_state->needs_bg_fill;
 
 	/* Update the current vc4_state pos0, pos2 and ptr0 dlist entries. */
···
 		new_vc4_state->dlist[vc4_state->pos0_offset];
 	vc4_state->dlist[vc4_state->pos2_offset] =
 		new_vc4_state->dlist[vc4_state->pos2_offset];
-	vc4_state->dlist[vc4_state->ptr0_offset] =
-		new_vc4_state->dlist[vc4_state->ptr0_offset];
+	vc4_state->dlist[vc4_state->ptr0_offset[0]] =
+		new_vc4_state->dlist[vc4_state->ptr0_offset[0]];
 
 	/* Note that we can't just call vc4_plane_write_dlist()
 	 * because that would smash the context data that the HVS is
···
 	       &vc4_state->hw_dlist[vc4_state->pos0_offset]);
 	writel(vc4_state->dlist[vc4_state->pos2_offset],
 	       &vc4_state->hw_dlist[vc4_state->pos2_offset]);
-	writel(vc4_state->dlist[vc4_state->ptr0_offset],
-	       &vc4_state->hw_dlist[vc4_state->ptr0_offset]);
+	writel(vc4_state->dlist[vc4_state->ptr0_offset[0]],
+	       &vc4_state->hw_dlist[vc4_state->ptr0_offset[0]]);
 
 	drm_dev_exit(idx);
 }
···
 	if (old_vc4_state->dlist_count != new_vc4_state->dlist_count ||
 	    old_vc4_state->pos0_offset != new_vc4_state->pos0_offset ||
 	    old_vc4_state->pos2_offset != new_vc4_state->pos2_offset ||
-	    old_vc4_state->ptr0_offset != new_vc4_state->ptr0_offset ||
+	    old_vc4_state->ptr0_offset[0] != new_vc4_state->ptr0_offset[0] ||
 	    vc4_lbm_size(plane->state) != vc4_lbm_size(new_plane_state))
 		return -EINVAL;
 
···
 	for (i = 0; i < new_vc4_state->dlist_count; i++) {
 		if (i == new_vc4_state->pos0_offset ||
 		    i == new_vc4_state->pos2_offset ||
-		    i == new_vc4_state->ptr0_offset ||
+		    i == new_vc4_state->ptr0_offset[0] ||
 		    (new_vc4_state->lbm_offset &&
 		     i == new_vc4_state->lbm_offset))
 			continue;
···
 	};
 
 	for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) {
-		if (!hvs_formats[i].hvs5_only || vc4->is_vc5) {
+		if (!hvs_formats[i].hvs5_only || vc4->gen == VC4_GEN_5) {
 			formats[num_formats] = hvs_formats[i].drm;
 			num_formats++;
 		}
···
 		return ERR_CAST(vc4_plane);
 	plane = &vc4_plane->base;
 
-	if (vc4->is_vc5)
+	if (vc4->gen == VC4_GEN_5)
 		drm_plane_helper_add(plane, &vc5_plane_helper_funcs);
 	else
 		drm_plane_helper_add(plane, &vc4_plane_helper_funcs);

drivers/gpu/drm/vc4/vc4_regs.h

···
 # define VC4_HD_VID_CTL_CLRSYNC			BIT(24)
 # define VC4_HD_VID_CTL_CLRRGB			BIT(23)
 # define VC4_HD_VID_CTL_BLANKPIX		BIT(18)
+# define VC4_HD_VID_CTL_BLANK_INSERT_EN		BIT(16)
 
 # define VC4_HD_CSC_CTL_ORDER_MASK		VC4_MASK(7, 5)
 # define VC4_HD_CSC_CTL_ORDER_SHIFT		5

drivers/gpu/drm/vc4/vc4_render_cl.c

···
 	bool has_bin = args->bin_cl_size != 0;
 	int ret;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	if (args->min_x_tile > args->max_x_tile ||

drivers/gpu/drm/vc4/vc4_v3d.c

···
 int
 vc4_v3d_pm_get(struct vc4_dev *vc4)
 {
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	mutex_lock(&vc4->power_lock);
···
 void
 vc4_v3d_pm_put(struct vc4_dev *vc4)
 {
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	mutex_lock(&vc4->power_lock);
···
 	uint64_t seqno = 0;
 	struct vc4_exec_info *exec;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 try_again:
···
 {
 	int ret = 0;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	mutex_lock(&vc4->bin_bo_lock);
···
 
 void vc4_v3d_bin_bo_put(struct vc4_dev *vc4)
 {
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return;
 
 	mutex_lock(&vc4->bin_bo_lock);

drivers/gpu/drm/vc4/vc4_validate.c

···
 	struct drm_gem_dma_object *obj;
 	struct vc4_bo *bo;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return NULL;
 
 	if (hindex >= exec->bo_count) {
···
 	uint32_t utile_w = utile_width(cpp);
 	uint32_t utile_h = utile_height(cpp);
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return false;
 
 	/* The shaded vertex format stores signed 12.4 fixed point
···
 	uint32_t dst_offset = 0;
 	uint32_t src_offset = 0;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	while (src_offset < len) {
···
 	uint32_t i;
 	int ret = 0;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return -ENODEV;
 
 	for (i = 0; i < exec->shader_state_count; i++) {

drivers/gpu/drm/vc4/vc4_validate_shaders.c

···
 	struct vc4_validated_shader_info *validated_shader = NULL;
 	struct vc4_shader_validation_state validation_state;
 
-	if (WARN_ON_ONCE(vc4->is_vc5))
+	if (WARN_ON_ONCE(vc4->gen > VC4_GEN_4))
 		return NULL;
 
 	memset(&validation_state, 0, sizeof(validation_state));

drivers/gpu/drm/xe/Kconfig

···
 	select DRM_PANEL
 	select DRM_SUBALLOC_HELPER
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
 	select DRM_DISPLAY_HDCP_HELPER
 	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_DISPLAY_HELPER

drivers/gpu/host1x/context_bus.c

···
 #include <linux/device.h>
 #include <linux/of.h>
 
-struct bus_type host1x_context_device_bus_type = {
+const struct bus_type host1x_context_device_bus_type = {
 	.name = "host1x-context",
 };
 EXPORT_SYMBOL_GPL(host1x_context_device_bus_type);

drivers/gpu/host1x/dev.c

···
 };
 
 static const struct host1x_sid_entry tegra186_sid_table[] = {
-	{
-		/* VIC */
-		.base = 0x1af0,
-		.offset = 0x30,
-		.limit = 0x34
-	},
-	{
-		/* NVDEC */
-		.base = 0x1b00,
-		.offset = 0x30,
-		.limit = 0x34
-	},
+	{ /* SE1      */  .base = 0x1ac8, .offset = 0x90,    .limit = 0x90    },
+	{ /* SE2      */  .base = 0x1ad0, .offset = 0x90,    .limit = 0x90    },
+	{ /* SE3      */  .base = 0x1ad8, .offset = 0x90,    .limit = 0x90    },
+	{ /* SE4      */  .base = 0x1ae0, .offset = 0x90,    .limit = 0x90    },
+	{ /* ISP      */  .base = 0x1ae8, .offset = 0x50,    .limit = 0x50    },
+	{ /* VIC      */  .base = 0x1af0, .offset = 0x30,    .limit = 0x34    },
+	{ /* NVENC    */  .base = 0x1af8, .offset = 0x30,    .limit = 0x34    },
+	{ /* NVDEC    */  .base = 0x1b00, .offset = 0x30,    .limit = 0x34    },
+	{ /* NVJPG    */  .base = 0x1b08, .offset = 0x30,    .limit = 0x34    },
+	{ /* TSEC     */  .base = 0x1b10, .offset = 0x30,    .limit = 0x34    },
+	{ /* TSECB    */  .base = 0x1b18, .offset = 0x30,    .limit = 0x34    },
+	{ /* VI 0     */  .base = 0x1b80, .offset = 0x10000, .limit = 0x10000 },
+	{ /* VI 1     */  .base = 0x1b88, .offset = 0x20000, .limit = 0x20000 },
+	{ /* VI 2     */  .base = 0x1b90, .offset = 0x30000, .limit = 0x30000 },
+	{ /* VI 3     */  .base = 0x1b98, .offset = 0x40000, .limit = 0x40000 },
+	{ /* VI 4     */  .base = 0x1ba0, .offset = 0x50000, .limit = 0x50000 },
+	{ /* VI 5     */  .base = 0x1ba8, .offset = 0x60000, .limit = 0x60000 },
+	{ /* VI 6     */  .base = 0x1bb0, .offset = 0x70000, .limit = 0x70000 },
+	{ /* VI 7     */  .base = 0x1bb8, .offset = 0x80000, .limit = 0x80000 },
+	{ /* VI 8     */  .base = 0x1bc0, .offset = 0x90000, .limit = 0x90000 },
+	{ /* VI 9     */  .base = 0x1bc8, .offset = 0xa0000, .limit = 0xa0000 },
+	{ /* VI 10    */  .base = 0x1bd0, .offset = 0xb0000, .limit = 0xb0000 },
+	{ /* VI 11    */  .base = 0x1bd8, .offset = 0xc0000, .limit = 0xc0000 },
 };
 
 static const struct host1x_info host1x06_info = {
···
 };
 
 static const struct host1x_sid_entry tegra194_sid_table[] = {
-	{
-		/* VIC */
-		.base = 0x1af0,
-		.offset = 0x30,
-		.limit = 0x34
-	},
-	{
-		/* NVDEC */
-		.base = 0x1b00,
-		.offset = 0x30,
-		.limit = 0x34
-	},
-	{
-		/* NVDEC1 */
-		.base = 0x1bc0,
-		.offset = 0x30,
-		.limit = 0x34
-	},
+	{ /* SE1          */  .base = 0x1ac8, .offset = 0x90,  .limit = 0x90  },
+	{ /* SE2          */  .base = 0x1ad0, .offset = 0x90,  .limit = 0x90  },
+	{ /* SE3          */  .base = 0x1ad8, .offset = 0x90,  .limit = 0x90  },
+	{ /* SE4          */  .base = 0x1ae0, .offset = 0x90,  .limit = 0x90  },
+	{ /* ISP          */  .base = 0x1ae8, .offset = 0x800, .limit = 0x800 },
+	{ /* VIC          */  .base = 0x1af0, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVENC        */  .base = 0x1af8, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVDEC        */  .base = 0x1b00, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVJPG        */  .base = 0x1b08, .offset = 0x30,  .limit = 0x34  },
+	{ /* TSEC         */  .base = 0x1b10, .offset = 0x30,  .limit = 0x34  },
+	{ /* TSECB        */  .base = 0x1b18, .offset = 0x30,  .limit = 0x34  },
+	{ /* VI           */  .base = 0x1b80, .offset = 0x800, .limit = 0x800 },
+	{ /* VI_THI       */  .base = 0x1b88, .offset = 0x30,  .limit = 0x34  },
+	{ /* ISP_THI      */  .base = 0x1b90, .offset = 0x30,  .limit = 0x34  },
+	{ /* PVA0_CLUSTER */  .base = 0x1b98, .offset = 0x0,   .limit = 0x0   },
+	{ /* PVA0_CLUSTER */  .base = 0x1ba0, .offset = 0x0,   .limit = 0x0   },
+	{ /* NVDLA0       */  .base = 0x1ba8, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVDLA1       */  .base = 0x1bb0, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVENC1       */  .base = 0x1bb8, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVDEC1       */  .base = 0x1bc0, .offset = 0x30,  .limit = 0x34  },
 };
 
 static const struct host1x_info host1x07_info = {
···
  * and firmware stream ID in the MMIO path table.
  */
 static const struct host1x_sid_entry tegra234_sid_table[] = {
-	{
-		/* SE2 MMIO */
-		.base = 0x1658,
-		.offset = 0x90,
-		.limit = 0x90
-	},
-	{
-		/* SE4 MMIO */
-		.base = 0x1660,
-		.offset = 0x90,
-		.limit = 0x90
-	},
-	{
-		/* SE2 channel */
-		.base = 0x1738,
-		.offset = 0x90,
-		.limit = 0x90
-	},
-	{
-		/* SE4 channel */
-		.base = 0x1740,
-		.offset = 0x90,
-		.limit = 0x90
-	},
-	{
-		/* VIC channel */
-		.base = 0x17b8,
-		.offset = 0x30,
-		.limit = 0x30
-	},
-	{
-		/* VIC MMIO */
-		.base = 0x1688,
-		.offset = 0x34,
-		.limit = 0x34
-	},
-	{
-		/* NVDEC channel */
-		.base = 0x17c8,
-		.offset = 0x30,
-		.limit = 0x30,
-	},
-	{
-		/* NVDEC MMIO */
-		.base = 0x1698,
-		.offset = 0x34,
-		.limit = 0x34,
-	},
+	{ /* SE1 MMIO     */  .base = 0x1650, .offset = 0x90,  .limit = 0x90  },
+	{ /* SE1 ch       */  .base = 0x1730, .offset = 0x90,  .limit = 0x90  },
+	{ /* SE2 MMIO     */  .base = 0x1658, .offset = 0x90,  .limit = 0x90  },
+	{ /* SE2 ch       */  .base = 0x1738, .offset = 0x90,  .limit = 0x90  },
+	{ /* SE4 MMIO     */  .base = 0x1660, .offset = 0x90,  .limit = 0x90  },
+	{ /* SE4 ch       */  .base = 0x1740, .offset = 0x90,  .limit = 0x90  },
+	{ /* ISP MMIO     */  .base = 0x1680, .offset = 0x800, .limit = 0x800 },
+	{ /* VIC MMIO     */  .base = 0x1688, .offset = 0x34,  .limit = 0x34  },
+	{ /* VIC ch       */  .base = 0x17b8, .offset = 0x30,  .limit = 0x30  },
+	{ /* NVENC MMIO   */  .base = 0x1690, .offset = 0x34,  .limit = 0x34  },
+	{ /* NVENC ch     */  .base = 0x17c0, .offset = 0x30,  .limit = 0x30  },
+	{ /* NVDEC MMIO   */  .base = 0x1698, .offset = 0x34,  .limit = 0x34  },
+	{ /* NVDEC ch     */  .base = 0x17c8, .offset = 0x30,  .limit = 0x30  },
+	{ /* NVJPG MMIO   */  .base = 0x16a0, .offset = 0x34,  .limit = 0x34  },
+	{ /* NVJPG ch     */  .base = 0x17d0, .offset = 0x30,  .limit = 0x30  },
+	{ /* TSEC MMIO    */  .base = 0x16a8, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVJPG1 MMIO  */  .base = 0x16b0, .offset = 0x34,  .limit = 0x34  },
+	{ /* NVJPG1 ch    */  .base = 0x17a8, .offset = 0x30,  .limit = 0x30  },
+	{ /* VI MMIO      */  .base = 0x16b8, .offset = 0x800, .limit = 0x800 },
+	{ /* VI_THI MMIO  */  .base = 0x16c0, .offset = 0x30,  .limit = 0x34  },
+	{ /* ISP_THI MMIO */  .base = 0x16c8, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVDLA MMIO   */  .base = 0x16d8, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVDLA ch     */  .base = 0x17e0, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVDLA1 MMIO  */  .base = 0x16e0, .offset = 0x30,  .limit = 0x34  },
+	{ /* NVDLA1 ch    */  .base = 0x17e8, .offset = 0x30,  .limit = 0x34  },
+	{ /* OFA MMIO     */  .base = 0x16e8, .offset = 0x34,  .limit = 0x34  },
+	{ /* OFA ch       */  .base = 0x1768, .offset = 0x30,  .limit = 0x30  },
+	{ /* VI2 MMIO     */  .base = 0x16f0, .offset = 0x800, .limit = 0x800 },
+	{ /* VI2_THI MMIO */  .base = 0x16f8, .offset = 0x30,  .limit = 0x34  },
 };
 
 static const struct host1x_info host1x08_info = {

drivers/gpu/host1x/dev.h

···
 };
 
 void host1x_common_writel(struct host1x *host1x, u32 v, u32 r);
-void host1x_hypervisor_writel(struct host1x *host1x, u32 r, u32 v);
+void host1x_hypervisor_writel(struct host1x *host1x, u32 v, u32 r);
 u32 host1x_hypervisor_readl(struct host1x *host1x, u32 r);
-void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
+void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r);
 u32 host1x_sync_readl(struct host1x *host1x, u32 r);
-void host1x_ch_writel(struct host1x_channel *ch, u32 r, u32 v);
+void host1x_ch_writel(struct host1x_channel *ch, u32 v, u32 r);
 u32 host1x_ch_readl(struct host1x_channel *ch, u32 r);
 
 static inline void host1x_hw_syncpt_restore(struct host1x *host,

drivers/gpu/host1x/hw/cdma_hw.c

···
 	u32 offset;
 
 	switch (ch->client->class) {
+	case HOST1X_CLASS_NVJPG1:
+		offset = HOST1X_COMMON_NVJPG1_MLOCK;
+		break;
+	case HOST1X_CLASS_NVENC:
+		offset = HOST1X_COMMON_NVENC_MLOCK;
+		break;
 	case HOST1X_CLASS_VIC:
 		offset = HOST1X_COMMON_VIC_MLOCK;
 		break;
+	case HOST1X_CLASS_NVJPG:
+		offset = HOST1X_COMMON_NVJPG_MLOCK;
+		break;
 	case HOST1X_CLASS_NVDEC:
 		offset = HOST1X_COMMON_NVDEC_MLOCK;
+		break;
+	case HOST1X_CLASS_OFA:
+		offset = HOST1X_COMMON_OFA_MLOCK;
 		break;
 	default:
 		WARN(1, "%s was not updated for class %u", __func__, ch->client->class);

drivers/gpu/host1x/hw/debug_hw.c

···
 
 	for (i = 0; i < words; i++) {
 		dma_addr_t addr = phys_addr + i * 4;
-		u32 val = *(map_addr + offset / 4 + i);
+		u32 voffset = offset + i * 4;
+		u32 val;
+
+		/* If we reach the RESTART opcode, continue at the beginning of pushbuffer */
+		if (cdma && voffset >= cdma->push_buffer.size) {
+			addr -= cdma->push_buffer.size;
+			voffset -= cdma->push_buffer.size;
+		}
+
+		val = *(map_addr + voffset / 4);
 
 		if (!data_count) {
 			host1x_debug_output(o, "    %pad: %08x: ", &addr, val);
···
 				    job->num_slots, job->num_unpins);
 
 		show_gather(o, pb->dma + job->first_get, job->num_slots * 2, cdma,
-			    pb->dma + job->first_get, pb->mapped + job->first_get);
+			    pb->dma, pb->mapped);
 
 		for (i = 0; i < job->num_cmds; i++) {
 			struct host1x_job_gather *g;
···
 			host1x_debug_output(o, "  GATHER at %pad+%#x, %d words\n",
 					    &g->base, g->offset, g->words);
 
-			show_gather(o, g->base + g->offset, g->words, cdma,
+			show_gather(o, g->base + g->offset, g->words, NULL,
 				    g->base, mapped);
 
 			if (!job->gather_copy_mapped)

include/drm/bridge/imx.h

···
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2012 Sascha Hauer, Pengutronix
+ */
+
+#ifndef DRM_IMX_BRIDGE_H
+#define DRM_IMX_BRIDGE_H
+
+struct drm_bridge *devm_imx_drm_legacy_bridge(struct device *dev,
+					      struct device_node *np,
+					      int type);
+
+#endif

include/drm/drm_gem_vram_helper.h

···
 struct drm_mode_create_dumb;
 struct drm_plane;
 struct drm_plane_state;
-struct drm_simple_display_pipe;
 struct filp;
 struct vm_area_struct;
 
···
 #define DRM_GEM_VRAM_PLANE_HELPER_FUNCS \
 	.prepare_fb = drm_gem_vram_plane_helper_prepare_fb, \
 	.cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb
-
-/*
- * Helpers for struct drm_simple_display_pipe_funcs
- */
-
-int drm_gem_vram_simple_display_pipe_prepare_fb(
-	struct drm_simple_display_pipe *pipe,
-	struct drm_plane_state *new_state);
-
-void drm_gem_vram_simple_display_pipe_cleanup_fb(
-	struct drm_simple_display_pipe *pipe,
-	struct drm_plane_state *old_state);
 
 /**
  * define DRM_GEM_VRAM_DRIVER - default callback functions for

include/drm/drm_panic.h

···
 
 };
 
+#ifdef CONFIG_DRM_PANIC
+
 /**
  * drm_panic_trylock - try to enter the panic printing critical section
  * @dev: struct drm_device
···
  */
 #define drm_panic_unlock(dev, flags) \
 	raw_spin_unlock_irqrestore(&(dev)->mode_config.panic_lock, flags)
+
+#else
+
+static inline bool drm_panic_trylock(struct drm_device *dev, unsigned long flags)
+{
+	return true;
+}
+
+static inline void drm_panic_lock(struct drm_device *dev, unsigned long flags) {}
+static inline void drm_panic_unlock(struct drm_device *dev, unsigned long flags) {}
+
+#endif
 
 #endif /* __DRM_PANIC_H__ */

include/drm/gpu_scheduler.h

···
 void drm_sched_wqueue_stop(struct drm_gpu_scheduler *sched);
 void drm_sched_wqueue_start(struct drm_gpu_scheduler *sched);
 void drm_sched_stop(struct drm_gpu_scheduler *sched, struct drm_sched_job *bad);
-void drm_sched_start(struct drm_gpu_scheduler *sched);
+void drm_sched_start(struct drm_gpu_scheduler *sched, int errno);
 void drm_sched_resubmit_jobs(struct drm_gpu_scheduler *sched);
 void drm_sched_increase_karma(struct drm_sched_job *bad);
 void drm_sched_reset_karma(struct drm_sched_job *bad);

include/linux/dma-fence.h

···
  * rather than success. This must be set before signaling (so that the value
  * is visible before any waiters on the signal callback are woken). This
  * helper exists to help catching erroneous setting of #dma_fence.error.
+ *
+ * Examples of error codes which drivers should use:
+ *
+ * * %-ENODATA	 This operation produced no data, no other operation affected.
+ * * %-ECANCELED All operations from the same context have been canceled.
+ * * %-ETIME	 Operation caused a timeout and potentially device reset.
  */
 static inline void dma_fence_set_error(struct dma_fence *fence,
 				       int error)

include/linux/host1x.h

···
 
 enum host1x_class {
 	HOST1X_CLASS_HOST1X = 0x1,
+	HOST1X_CLASS_NVJPG1 = 0x7,
+	HOST1X_CLASS_NVENC = 0x21,
+	HOST1X_CLASS_NVENC1 = 0x22,
 	HOST1X_CLASS_GR2D = 0x51,
 	HOST1X_CLASS_GR2D_SB = 0x52,
 	HOST1X_CLASS_VIC = 0x5D,
 	HOST1X_CLASS_GR3D = 0x60,
+	HOST1X_CLASS_NVJPG = 0xC0,
 	HOST1X_CLASS_NVDEC = 0xF0,
 	HOST1X_CLASS_NVDEC1 = 0xF5,
+	HOST1X_CLASS_OFA = 0xF8,
 };
 
 struct host1x;

include/linux/host1x_context_bus.h

···
 #include <linux/device.h>
 
 #ifdef CONFIG_TEGRA_HOST1X_CONTEXT_BUS
-extern struct bus_type host1x_context_device_bus_type;
+extern const struct bus_type host1x_context_device_bus_type;
 #endif
 
 #endif

include/uapi/drm/panfrost_drm.h

···
 #define DRM_IOCTL_PANFROST_PERFCNT_DUMP		DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_PERFCNT_DUMP, struct drm_panfrost_perfcnt_dump)
 
 #define PANFROST_JD_REQ_FS (1 << 0)
+#define PANFROST_JD_REQ_CYCLE_COUNT (1 << 1)
 /**
  * struct drm_panfrost_submit - ioctl argument for submitting commands to the 3D
  * engine.
···
 	DRM_PANFROST_PARAM_NR_CORE_GROUPS,
 	DRM_PANFROST_PARAM_THREAD_TLS_ALLOC,
 	DRM_PANFROST_PARAM_AFBC_FEATURES,
+	DRM_PANFROST_PARAM_SYSTEM_TIMESTAMP,
+	DRM_PANFROST_PARAM_SYSTEM_TIMESTAMP_FREQUENCY,
 };
 
 struct drm_panfrost_get_param {

include/uapi/drm/panthor_drm.h

···
 
 	/** @DRM_PANTHOR_DEV_QUERY_CSIF_INFO: Query command-stream interface information. */
 	DRM_PANTHOR_DEV_QUERY_CSIF_INFO,
+
+	/** @DRM_PANTHOR_DEV_QUERY_TIMESTAMP_INFO: Query timestamp information. */
+	DRM_PANTHOR_DEV_QUERY_TIMESTAMP_INFO,
 };
 
 /**
···
 	 * @pad: Padding field, set to zero.
 	 */
 	__u32 pad;
+};
+
+/**
+ * struct drm_panthor_timestamp_info - Timestamp information
+ *
+ * Structure grouping all queryable information relating to the GPU timestamp.
+ */
+struct drm_panthor_timestamp_info {
+	/**
+	 * @timestamp_frequency: The frequency of the timestamp timer or 0 if
+	 * unknown.
+	 */
+	__u64 timestamp_frequency;
+
+	/** @current_timestamp: The current timestamp. */
+	__u64 current_timestamp;
+
+	/** @timestamp_offset: The offset of the timestamp timer. */
+	__u64 timestamp_offset;
 };
 
 /**