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 <uapi/drm/tegra_drm.h>
11#include <linux/host1x.h>
12#include <linux/iova.h>
13#include <linux/of_gpio.h>
14
15#include <drm/drmP.h>
16#include <drm/drm_atomic.h>
17#include <drm/drm_edid.h>
18#include <drm/drm_encoder.h>
19#include <drm/drm_fb_helper.h>
20#include <drm/drm_fixed.h>
21#include <drm/drm_probe_helper.h>
22
23#include "gem.h"
24#include "hub.h"
25#include "trace.h"
26
27struct reset_control;
28
29#ifdef CONFIG_DRM_FBDEV_EMULATION
30struct tegra_fbdev {
31 struct drm_fb_helper base;
32 struct drm_framebuffer *fb;
33};
34#endif
35
36struct tegra_drm {
37 struct drm_device *drm;
38
39 struct iommu_domain *domain;
40 struct iommu_group *group;
41 struct mutex mm_lock;
42 struct drm_mm mm;
43
44 struct {
45 struct iova_domain domain;
46 unsigned long shift;
47 unsigned long limit;
48 } carveout;
49
50 struct mutex clients_lock;
51 struct list_head clients;
52
53#ifdef CONFIG_DRM_FBDEV_EMULATION
54 struct tegra_fbdev *fbdev;
55#endif
56
57 unsigned int pitch_align;
58
59 struct tegra_display_hub *hub;
60};
61
62struct tegra_drm_client;
63
64struct tegra_drm_context {
65 struct tegra_drm_client *client;
66 struct host1x_channel *channel;
67 unsigned int id;
68};
69
70struct tegra_drm_client_ops {
71 int (*open_channel)(struct tegra_drm_client *client,
72 struct tegra_drm_context *context);
73 void (*close_channel)(struct tegra_drm_context *context);
74 int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
75 int (*is_valid_class)(u32 class);
76 int (*submit)(struct tegra_drm_context *context,
77 struct drm_tegra_submit *args, struct drm_device *drm,
78 struct drm_file *file);
79};
80
81int tegra_drm_submit(struct tegra_drm_context *context,
82 struct drm_tegra_submit *args, struct drm_device *drm,
83 struct drm_file *file);
84
85struct tegra_drm_client {
86 struct host1x_client base;
87 struct list_head list;
88 struct tegra_drm *drm;
89
90 unsigned int version;
91 const struct tegra_drm_client_ops *ops;
92};
93
94static inline struct tegra_drm_client *
95host1x_to_drm_client(struct host1x_client *client)
96{
97 return container_of(client, struct tegra_drm_client, base);
98}
99
100int tegra_drm_register_client(struct tegra_drm *tegra,
101 struct tegra_drm_client *client);
102int tegra_drm_unregister_client(struct tegra_drm *tegra,
103 struct tegra_drm_client *client);
104struct iommu_group *host1x_client_iommu_attach(struct host1x_client *client,
105 bool shared);
106void host1x_client_iommu_detach(struct host1x_client *client,
107 struct iommu_group *group);
108
109int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
110int tegra_drm_exit(struct tegra_drm *tegra);
111
112void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
113void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
114 dma_addr_t iova);
115
116struct cec_notifier;
117
118struct tegra_output {
119 struct device_node *of_node;
120 struct device *dev;
121
122 struct drm_panel *panel;
123 struct i2c_adapter *ddc;
124 const struct edid *edid;
125 struct cec_notifier *cec;
126 unsigned int hpd_irq;
127 struct gpio_desc *hpd_gpio;
128
129 struct drm_encoder encoder;
130 struct drm_connector connector;
131};
132
133static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
134{
135 return container_of(e, struct tegra_output, encoder);
136}
137
138static inline struct tegra_output *connector_to_output(struct drm_connector *c)
139{
140 return container_of(c, struct tegra_output, connector);
141}
142
143/* from output.c */
144int tegra_output_probe(struct tegra_output *output);
145void tegra_output_remove(struct tegra_output *output);
146int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
147void tegra_output_exit(struct tegra_output *output);
148void tegra_output_find_possible_crtcs(struct tegra_output *output,
149 struct drm_device *drm);
150
151int tegra_output_connector_get_modes(struct drm_connector *connector);
152enum drm_connector_status
153tegra_output_connector_detect(struct drm_connector *connector, bool force);
154void tegra_output_connector_destroy(struct drm_connector *connector);
155
156void tegra_output_encoder_destroy(struct drm_encoder *encoder);
157
158/* from dpaux.c */
159struct drm_dp_link;
160
161struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
162enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
163int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
164int drm_dp_aux_detach(struct drm_dp_aux *aux);
165int drm_dp_aux_enable(struct drm_dp_aux *aux);
166int drm_dp_aux_disable(struct drm_dp_aux *aux);
167int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
168int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
169 u8 pattern);
170
171/* from fb.c */
172struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
173 unsigned int index);
174bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
175int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
176 struct tegra_bo_tiling *tiling);
177struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
178 struct drm_file *file,
179 const struct drm_mode_fb_cmd2 *cmd);
180int tegra_drm_fb_prepare(struct drm_device *drm);
181void tegra_drm_fb_free(struct drm_device *drm);
182int tegra_drm_fb_init(struct drm_device *drm);
183void tegra_drm_fb_exit(struct drm_device *drm);
184
185extern struct platform_driver tegra_display_hub_driver;
186extern struct platform_driver tegra_dc_driver;
187extern struct platform_driver tegra_hdmi_driver;
188extern struct platform_driver tegra_dsi_driver;
189extern struct platform_driver tegra_dpaux_driver;
190extern struct platform_driver tegra_sor_driver;
191extern struct platform_driver tegra_gr2d_driver;
192extern struct platform_driver tegra_gr3d_driver;
193extern struct platform_driver tegra_vic_driver;
194
195#endif /* HOST1X_DRM_H */