drm/amd/amdgpu: Map ISP interrupts as generic IRQs

Map ISP IH interrupts to Linux generic IRQ for ISP driver to
handle the interrupts using MFD IORESOURCE_IRQ resource.

Reviewed-by: Alex Deucher <[e-mail]>
Reviewed-by: Mario Limonciello <[e-mail]>
Signed-off-by: Pratap Nirujogi <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 	} else	if (src_id >= AMDGPU_MAX_IRQ_SRC_ID) {
 		DRM_DEBUG("Invalid src_id in IV: %d\n", src_id);
 
-	} else if ((client_id == AMDGPU_IRQ_CLIENTID_LEGACY) &&
+	} else if (((client_id == AMDGPU_IRQ_CLIENTID_LEGACY) ||
+		    (client_id == SOC15_IH_CLIENTID_ISP)) &&
 		   adev->irq.virq[src_id]) {
 		generic_handle_domain_irq(adev->irq.domain, src_id);
 

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

···
 #include "amdgpu.h"
 #include "amdgpu_isp.h"
 
+#include "ivsrcid/isp/irqsrcs_isp_4_1.h"
+
 #define mmDAGB0_WRCLI5_V4_1	0x6811C
 #define mmDAGB0_WRCLI9_V4_1	0x6812C
 #define mmDAGB0_WRCLI10_V4_1	0x68130
 #define mmDAGB0_WRCLI14_V4_1	0x68140
 #define mmDAGB0_WRCLI19_V4_1	0x68154
 #define mmDAGB0_WRCLI20_V4_1	0x68158
+
+static const unsigned int isp_int_srcid[MAX_ISP_INT_SRC] = {
+	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT9,
+	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT10,
+	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT11,
+	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT12,
+	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT13,
+	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT14,
+	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT15,
+	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT16
+};
 
 static int isp_sw_init(void *handle)
 {
···
  */
 static int isp_hw_init(void *handle)
 {
-	int r;
-	u64 isp_base;
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	const struct amdgpu_ip_block *ip_block =
 		amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_ISP);
+	u64 isp_base;
+	int int_idx;
+	int r;
 
 	if (!ip_block)
 		return -EINVAL;
···
 		goto failure;
 	}
 
-	adev->isp.isp_res = kcalloc(1, sizeof(struct resource), GFP_KERNEL);
+	adev->isp.isp_res = kcalloc(9, sizeof(struct resource), GFP_KERNEL);
 	if (!adev->isp.isp_res) {
 		r = -ENOMEM;
 		DRM_ERROR("%s: isp mfd res alloc failed\n", __func__);
···
 	adev->isp.isp_res[0].start = isp_base;
 	adev->isp.isp_res[0].end = isp_base + ISP_REGS_OFFSET_END;
 
+	for (int_idx = 0; int_idx < MAX_ISP_INT_SRC; int_idx++) {
+		adev->isp.isp_res[int_idx + 1].name = "isp_irq";
+		adev->isp.isp_res[int_idx + 1].flags = IORESOURCE_IRQ;
+		adev->isp.isp_res[int_idx + 1].start =
+			amdgpu_irq_create_mapping(adev, isp_int_srcid[int_idx]);
+		adev->isp.isp_res[int_idx + 1].end =
+			adev->isp.isp_res[int_idx + 1].start;
+	}
+
 	adev->isp.isp_cell[0].name = "amd_isp_capture";
-	adev->isp.isp_cell[0].num_resources = 1;
+	adev->isp.isp_cell[0].num_resources = 9;
 	adev->isp.isp_cell[0].resources = &adev->isp.isp_res[0];
 	adev->isp.isp_cell[0].platform_data = adev->isp.isp_pdata;
 	adev->isp.isp_cell[0].pdata_size = sizeof(struct isp_platform_data);

drivers/gpu/drm/amd/amdgpu/amdgpu_isp.h

···
 
 #define ISP_REGS_OFFSET_END 0x629A4
 
+#define MAX_ISP_INT_SRC 8
+
 struct isp_platform_data {
 	void *adev;
 	u32 asic_type;

drivers/gpu/drm/amd/amdgpu/ih_v6_1.c

···
 static int ih_v6_1_early_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	int ret;
+
+	ret = amdgpu_irq_add_domain(adev);
+	if (ret) {
+		return ret;
+	}
 
 	ih_v6_1_set_interrupt_funcs(adev);
 	ih_v6_1_set_self_irq_funcs(adev);

drivers/gpu/drm/amd/include/ivsrcid/isp/irqsrcs_isp_4_1.h

···
+/*
+ * Copyright 2024 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#ifndef __IRQSRCS_ISP_4_1_H__
+#define __IRQSRCS_ISP_4_1_H__
+
+
+#define ISP_4_1__SRCID__ISP_SEMA_WAIT_FAIL_TIMEOUT			0x12	// Semaphore wait fail timeout
+#define ISP_4_1__SRCID__ISP_SEMA_WAIT_INCOMPLETE_TIMEOUT		0x13	// Semaphore wait incomplete timeout
+#define ISP_4_1__SRCID__ISP_SEMA_SIGNAL_INCOMPLETE_TIMEOUT		0x14	// Semaphore signal incomplete timeout
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE5_CHANGED			0x15	// Ringbuffer base5 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT5			        0x16	// Ringbuffer write point 5 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE6_CHANGED			0x17	// Ringbuffer base6 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT6			        0x18	// Ringbuffer write point 6 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE7_CHANGED			0x19	// Ringbuffer base7 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT7			        0x1A	// Ringbuffer write point 7 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE8_CHANGED			0x1B	// Ringbuffer base8 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT8			        0x1C	// Ringbuffer write point 8 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE9_CHANGED			0x00    // Ringbuffer base9 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT9			        0x01    // Ringbuffer write point 9 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE10_CHANGED			0x02    // Ringbuffer base10 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT10			        0x03    // Ringbuffer write point 10 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE11_CHANGED			0x04    // Ringbuffer base11 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT11			        0x05    // Ringbuffer write point 11 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE12_CHANGED			0x06    // Ringbuffer base12 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT12			        0x07    // Ringbuffer write point 12 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE13_CHANGED			0x08    // Ringbuffer base13 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT13			        0x09    // Ringbuffer write point 13 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE14_CHANGED			0x0A    // Ringbuffer base14 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT14			        0x0B    // Ringbuffer write point 14 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE15_CHANGED			0x0C    // Ringbuffer base15 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT15			        0x0D    // Ringbuffer write point 15 changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_BASE16_CHANGED			0x0E    // Ringbuffer base16 address changed
+#define ISP_4_1__SRCID__ISP_RINGBUFFER_WPT16			        0x0F    // Ringbuffer write point 16 changed
+#define ISP_4_1__SRCID__ISP_MIPI0			                0x29	// MIPI0 interrupt
+#define ISP_4_1__SRCID__ISP_MIPI1			                0x2A	// MIPI1 interrupt
+#define ISP_4_1__SRCID__ISP_I2C0			                0x2B	// I2C0 PAD interrupt
+#define ISP_4_1__SRCID__ISP_I2C1			                0x2C	// I2C1 PAD interrupt
+#define ISP_4_1__SRCID__ISP_FLASH0			                0x2D	// Flash0 interrupt
+#define ISP_4_1__SRCID__ISP_FLASH1			                0x2E	// Flash1 interrupt
+#define ISP_4_1__SRCID__ISP_DEBUG			                0x2F	// Debug information
+
+#endif