tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#ifndef HOST1X_DRM_H
11#define HOST1X_DRM_H 1
12
13#include <uapi/drm/tegra_drm.h>
14#include <linux/host1x.h>
15#include <linux/iova.h>
16#include <linux/of_gpio.h>
17
18#include <drm/drmP.h>
19#include <drm/drm_atomic.h>
20#include <drm/drm_edid.h>
21#include <drm/drm_encoder.h>
22#include <drm/drm_fb_helper.h>
23#include <drm/drm_fixed.h>
24#include <drm/drm_probe_helper.h>
25
26#include "gem.h"
27#include "hub.h"
28#include "trace.h"
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 struct iommu_group *group;
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 pitch_align;
61
62 struct tegra_display_hub *hub;
63};
64
65struct tegra_drm_client;
66
67struct tegra_drm_context {
68 struct tegra_drm_client *client;
69 struct host1x_channel *channel;
70 unsigned int id;
71};
72
73struct tegra_drm_client_ops {
74 int (*open_channel)(struct tegra_drm_client *client,
75 struct tegra_drm_context *context);
76 void (*close_channel)(struct tegra_drm_context *context);
77 int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
78 int (*is_valid_class)(u32 class);
79 int (*submit)(struct tegra_drm_context *context,
80 struct drm_tegra_submit *args, struct drm_device *drm,
81 struct drm_file *file);
82};
83
84int tegra_drm_submit(struct tegra_drm_context *context,
85 struct drm_tegra_submit *args, struct drm_device *drm,
86 struct drm_file *file);
87
88struct tegra_drm_client {
89 struct host1x_client base;
90 struct list_head list;
91 struct tegra_drm *drm;
92
93 unsigned int version;
94 const struct tegra_drm_client_ops *ops;
95};
96
97static inline struct tegra_drm_client *
98host1x_to_drm_client(struct host1x_client *client)
99{
100 return container_of(client, struct tegra_drm_client, base);
101}
102
103int tegra_drm_register_client(struct tegra_drm *tegra,
104 struct tegra_drm_client *client);
105int tegra_drm_unregister_client(struct tegra_drm *tegra,
106 struct tegra_drm_client *client);
107struct iommu_group *host1x_client_iommu_attach(struct host1x_client *client,
108 bool shared);
109void host1x_client_iommu_detach(struct host1x_client *client,
110 struct iommu_group *group);
111
112int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
113int tegra_drm_exit(struct tegra_drm *tegra);
114
115void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
116void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
117 dma_addr_t iova);
118
119struct cec_notifier;
120
121struct tegra_output {
122 struct device_node *of_node;
123 struct device *dev;
124
125 struct drm_panel *panel;
126 struct i2c_adapter *ddc;
127 const struct edid *edid;
128 struct cec_notifier *cec;
129 unsigned int hpd_irq;
130 int hpd_gpio;
131 enum of_gpio_flags hpd_gpio_flags;
132
133 struct drm_encoder encoder;
134 struct drm_connector connector;
135};
136
137static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
138{
139 return container_of(e, struct tegra_output, encoder);
140}
141
142static inline struct tegra_output *connector_to_output(struct drm_connector *c)
143{
144 return container_of(c, struct tegra_output, connector);
145}
146
147/* from output.c */
148int tegra_output_probe(struct tegra_output *output);
149void tegra_output_remove(struct tegra_output *output);
150int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
151void tegra_output_exit(struct tegra_output *output);
152void tegra_output_find_possible_crtcs(struct tegra_output *output,
153 struct drm_device *drm);
154
155int tegra_output_connector_get_modes(struct drm_connector *connector);
156enum drm_connector_status
157tegra_output_connector_detect(struct drm_connector *connector, bool force);
158void tegra_output_connector_destroy(struct drm_connector *connector);
159
160void tegra_output_encoder_destroy(struct drm_encoder *encoder);
161
162/* from dpaux.c */
163struct drm_dp_link;
164
165struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
166enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
167int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
168int drm_dp_aux_detach(struct drm_dp_aux *aux);
169int drm_dp_aux_enable(struct drm_dp_aux *aux);
170int drm_dp_aux_disable(struct drm_dp_aux *aux);
171int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
172int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
173 u8 pattern);
174
175/* from fb.c */
176struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
177 unsigned int index);
178bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
179int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
180 struct tegra_bo_tiling *tiling);
181struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
182 struct drm_file *file,
183 const struct drm_mode_fb_cmd2 *cmd);
184int tegra_drm_fb_prepare(struct drm_device *drm);
185void tegra_drm_fb_free(struct drm_device *drm);
186int tegra_drm_fb_init(struct drm_device *drm);
187void tegra_drm_fb_exit(struct drm_device *drm);
188
189extern struct platform_driver tegra_display_hub_driver;
190extern struct platform_driver tegra_dc_driver;
191extern struct platform_driver tegra_hdmi_driver;
192extern struct platform_driver tegra_dsi_driver;
193extern struct platform_driver tegra_dpaux_driver;
194extern struct platform_driver tegra_sor_driver;
195extern struct platform_driver tegra_gr2d_driver;
196extern struct platform_driver tegra_gr3d_driver;
197extern struct platform_driver tegra_vic_driver;
198
199#endif /* HOST1X_DRM_H */