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