tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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
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 bool use_explicit_iommu;
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);
104int host1x_client_iommu_attach(struct host1x_client *client);
105void host1x_client_iommu_detach(struct host1x_client *client);
106
107int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
108int tegra_drm_exit(struct tegra_drm *tegra);
109
110void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
111void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
112 dma_addr_t iova);
113
114struct cec_notifier;
115
116struct tegra_output {
117 struct device_node *of_node;
118 struct device *dev;
119
120 struct drm_bridge *bridge;
121 struct drm_panel *panel;
122 struct i2c_adapter *ddc;
123 const struct edid *edid;
124 struct cec_notifier *cec;
125 unsigned int hpd_irq;
126 struct gpio_desc *hpd_gpio;
127
128 struct drm_encoder encoder;
129 struct drm_connector connector;
130};
131
132static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
133{
134 return container_of(e, struct tegra_output, encoder);
135}
136
137static inline struct tegra_output *connector_to_output(struct drm_connector *c)
138{
139 return container_of(c, struct tegra_output, connector);
140}
141
142/* from output.c */
143int tegra_output_probe(struct tegra_output *output);
144void tegra_output_remove(struct tegra_output *output);
145int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
146void tegra_output_exit(struct tegra_output *output);
147void tegra_output_find_possible_crtcs(struct tegra_output *output,
148 struct drm_device *drm);
149int tegra_output_suspend(struct tegra_output *output);
150int tegra_output_resume(struct tegra_output *output);
151
152int tegra_output_connector_get_modes(struct drm_connector *connector);
153enum drm_connector_status
154tegra_output_connector_detect(struct drm_connector *connector, bool force);
155void tegra_output_connector_destroy(struct drm_connector *connector);
156
157/* from dpaux.c */
158struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
159enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
160int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
161int drm_dp_aux_detach(struct drm_dp_aux *aux);
162int drm_dp_aux_enable(struct drm_dp_aux *aux);
163int drm_dp_aux_disable(struct drm_dp_aux *aux);
164
165/* from fb.c */
166struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
167 unsigned int index);
168bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
169int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
170 struct tegra_bo_tiling *tiling);
171struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
172 struct drm_file *file,
173 const struct drm_mode_fb_cmd2 *cmd);
174int tegra_drm_fb_prepare(struct drm_device *drm);
175void tegra_drm_fb_free(struct drm_device *drm);
176int tegra_drm_fb_init(struct drm_device *drm);
177void tegra_drm_fb_exit(struct drm_device *drm);
178
179extern struct platform_driver tegra_display_hub_driver;
180extern struct platform_driver tegra_dc_driver;
181extern struct platform_driver tegra_hdmi_driver;
182extern struct platform_driver tegra_dsi_driver;
183extern struct platform_driver tegra_dpaux_driver;
184extern struct platform_driver tegra_sor_driver;
185extern struct platform_driver tegra_gr2d_driver;
186extern struct platform_driver tegra_gr3d_driver;
187extern struct platform_driver tegra_vic_driver;
188
189#endif /* HOST1X_DRM_H */