tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2012 Avionic Design GmbH
4 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
5 */
6
7#ifndef HOST1X_DRM_H
8#define HOST1X_DRM_H 1
9
10#include <linux/host1x.h>
11#include <linux/iova.h>
12#include <linux/gpio/consumer.h>
13
14#include <drm/drm_atomic.h>
15#include <drm/drm_bridge.h>
16#include <drm/drm_edid.h>
17#include <drm/drm_encoder.h>
18#include <drm/drm_fb_helper.h>
19#include <drm/drm_fixed.h>
20#include <drm/drm_probe_helper.h>
21#include <uapi/drm/tegra_drm.h>
22
23#include "gem.h"
24#include "hub.h"
25#include "trace.h"
26
27/* XXX move to include/uapi/drm/drm_fourcc.h? */
28#define DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT BIT_ULL(22)
29
30struct reset_control;
31
32#ifdef CONFIG_DRM_FBDEV_EMULATION
33struct tegra_fbdev {
34 struct drm_fb_helper base;
35 struct drm_framebuffer *fb;
36};
37#endif
38
39struct tegra_drm {
40 struct drm_device *drm;
41
42 struct iommu_domain *domain;
43 bool use_explicit_iommu;
44 struct mutex mm_lock;
45 struct drm_mm mm;
46
47 struct {
48 struct iova_domain domain;
49 unsigned long shift;
50 unsigned long limit;
51 } carveout;
52
53 struct mutex clients_lock;
54 struct list_head clients;
55
56#ifdef CONFIG_DRM_FBDEV_EMULATION
57 struct tegra_fbdev *fbdev;
58#endif
59
60 unsigned int hmask, vmask;
61 unsigned int pitch_align;
62 unsigned int num_crtcs;
63
64 struct tegra_display_hub *hub;
65};
66
67static inline struct host1x *tegra_drm_to_host1x(struct tegra_drm *tegra)
68{
69 return dev_get_drvdata(tegra->drm->dev->parent);
70}
71
72struct tegra_drm_client;
73
74struct tegra_drm_context {
75 struct tegra_drm_client *client;
76 struct host1x_channel *channel;
77
78 /* Only used by legacy UAPI. */
79 unsigned int id;
80
81 /* Only used by new UAPI. */
82 struct xarray mappings;
83 struct host1x_memory_context *memory_context;
84};
85
86struct tegra_drm_client_ops {
87 int (*open_channel)(struct tegra_drm_client *client,
88 struct tegra_drm_context *context);
89 void (*close_channel)(struct tegra_drm_context *context);
90 int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
91 int (*is_valid_class)(u32 class);
92 int (*submit)(struct tegra_drm_context *context,
93 struct drm_tegra_submit *args, struct drm_device *drm,
94 struct drm_file *file);
95 int (*get_streamid_offset)(struct tegra_drm_client *client, u32 *offset);
96 int (*can_use_memory_ctx)(struct tegra_drm_client *client, bool *supported);
97};
98
99int tegra_drm_submit(struct tegra_drm_context *context,
100 struct drm_tegra_submit *args, struct drm_device *drm,
101 struct drm_file *file);
102
103static inline int
104tegra_drm_get_streamid_offset_thi(struct tegra_drm_client *client, u32 *offset)
105{
106 *offset = 0x30;
107
108 return 0;
109}
110
111struct tegra_drm_client {
112 struct host1x_client base;
113 struct list_head list;
114 struct tegra_drm *drm;
115 struct host1x_channel *shared_channel;
116
117 /* Set by driver */
118 unsigned int version;
119 const struct tegra_drm_client_ops *ops;
120};
121
122static inline struct tegra_drm_client *
123host1x_to_drm_client(struct host1x_client *client)
124{
125 return container_of(client, struct tegra_drm_client, base);
126}
127
128int tegra_drm_register_client(struct tegra_drm *tegra,
129 struct tegra_drm_client *client);
130int tegra_drm_unregister_client(struct tegra_drm *tegra,
131 struct tegra_drm_client *client);
132int host1x_client_iommu_attach(struct host1x_client *client);
133void host1x_client_iommu_detach(struct host1x_client *client);
134
135int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
136int tegra_drm_exit(struct tegra_drm *tegra);
137
138void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
139void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
140 dma_addr_t iova);
141
142struct cec_notifier;
143
144struct tegra_output {
145 struct device_node *of_node;
146 struct device *dev;
147
148 struct drm_bridge *bridge;
149 struct drm_panel *panel;
150 struct i2c_adapter *ddc;
151 const struct edid *edid;
152 struct cec_notifier *cec;
153 unsigned int hpd_irq;
154 struct gpio_desc *hpd_gpio;
155
156 struct drm_encoder encoder;
157 struct drm_connector connector;
158};
159
160static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
161{
162 return container_of(e, struct tegra_output, encoder);
163}
164
165static inline struct tegra_output *connector_to_output(struct drm_connector *c)
166{
167 return container_of(c, struct tegra_output, connector);
168}
169
170/* from output.c */
171int tegra_output_probe(struct tegra_output *output);
172void tegra_output_remove(struct tegra_output *output);
173int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
174void tegra_output_exit(struct tegra_output *output);
175void tegra_output_find_possible_crtcs(struct tegra_output *output,
176 struct drm_device *drm);
177int tegra_output_suspend(struct tegra_output *output);
178int tegra_output_resume(struct tegra_output *output);
179
180int tegra_output_connector_get_modes(struct drm_connector *connector);
181enum drm_connector_status
182tegra_output_connector_detect(struct drm_connector *connector, bool force);
183void tegra_output_connector_destroy(struct drm_connector *connector);
184
185/* from dpaux.c */
186struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
187enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
188int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
189int drm_dp_aux_detach(struct drm_dp_aux *aux);
190int drm_dp_aux_enable(struct drm_dp_aux *aux);
191int drm_dp_aux_disable(struct drm_dp_aux *aux);
192
193/* from fb.c */
194struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
195 unsigned int index);
196bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
197int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
198 struct tegra_bo_tiling *tiling);
199struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
200 struct drm_file *file,
201 const struct drm_mode_fb_cmd2 *cmd);
202int tegra_drm_fb_prepare(struct drm_device *drm);
203void tegra_drm_fb_free(struct drm_device *drm);
204int tegra_drm_fb_init(struct drm_device *drm);
205void tegra_drm_fb_exit(struct drm_device *drm);
206
207extern struct platform_driver tegra_display_hub_driver;
208extern struct platform_driver tegra_dc_driver;
209extern struct platform_driver tegra_hdmi_driver;
210extern struct platform_driver tegra_dsi_driver;
211extern struct platform_driver tegra_dpaux_driver;
212extern struct platform_driver tegra_sor_driver;
213extern struct platform_driver tegra_gr2d_driver;
214extern struct platform_driver tegra_gr3d_driver;
215extern struct platform_driver tegra_vic_driver;
216extern struct platform_driver tegra_nvdec_driver;
217
218#endif /* HOST1X_DRM_H */