drivers/gpu/drm/tegra/drm.h

   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
  16 #include <drm/drmP.h>
  17 #include <drm/drm_crtc_helper.h>
  18 #include <drm/drm_edid.h>
  19 #include <drm/drm_fb_helper.h>
  20 #include <drm/drm_fixed.h>
  21
  22 #include "gem.h"
  23
  24 struct reset_control;
  25
  26 struct tegra_fb {
  27         struct drm_framebuffer base;
  28         struct tegra_bo **planes;
  29         unsigned int num_planes;
  30 };
  31
  32 #ifdef CONFIG_DRM_TEGRA_FBDEV
  33 struct tegra_fbdev {
  34         struct drm_fb_helper base;
  35         struct tegra_fb *fb;
  36 };
  37 #endif
  38
  39 struct tegra_drm {
  40         struct drm_device *drm;
  41
  42         struct iommu_domain *domain;
  43         struct drm_mm mm;
  44
  45         struct mutex clients_lock;
  46         struct list_head clients;
  47
  48 #ifdef CONFIG_DRM_TEGRA_FBDEV
  49         struct tegra_fbdev *fbdev;
  50 #endif
  51
  52         unsigned int pitch_align;
  53
  54         struct {
  55                 struct drm_atomic_state *state;
  56                 struct work_struct work;
  57                 struct mutex lock;
  58         } commit;
  59 };
  60
  61 struct tegra_drm_client;
  62
  63 struct tegra_drm_context {
  64         struct tegra_drm_client *client;
  65         struct host1x_channel *channel;
  66         struct list_head list;
  67 };
  68
  69 struct tegra_drm_client_ops {
  70         int (*open_channel)(struct tegra_drm_client *client,
  71                             struct tegra_drm_context *context);
  72         void (*close_channel)(struct tegra_drm_context *context);
  73         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  74         int (*submit)(struct tegra_drm_context *context,
  75                       struct drm_tegra_submit *args, struct drm_device *drm,
  76                       struct drm_file *file);
  77 };
  78
  79 int tegra_drm_submit(struct tegra_drm_context *context,
  80                      struct drm_tegra_submit *args, struct drm_device *drm,
  81                      struct drm_file *file);
  82
  83 struct tegra_drm_client {
  84         struct host1x_client base;
  85         struct list_head list;
  86
  87         const struct tegra_drm_client_ops *ops;
  88 };
  89
  90 static inline struct tegra_drm_client *
  91 host1x_to_drm_client(struct host1x_client *client)
  92 {
  93         return container_of(client, struct tegra_drm_client, base);
  94 }
  95
  96 int tegra_drm_register_client(struct tegra_drm *tegra,
  97                               struct tegra_drm_client *client);
  98 int tegra_drm_unregister_client(struct tegra_drm *tegra,
  99                                 struct tegra_drm_client *client);
 100
 101 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 102 int tegra_drm_exit(struct tegra_drm *tegra);
 103
 104 struct tegra_dc_soc_info;
 105 struct tegra_output;
 106
 107 struct tegra_dc {
 108         struct host1x_client client;
 109         struct host1x_syncpt *syncpt;
 110         struct device *dev;
 111         spinlock_t lock;
 112
 113         struct drm_crtc base;
 114         int powergate;
 115         int pipe;
 116
 117         struct clk *clk;
 118         struct reset_control *rst;
 119         void __iomem *regs;
 120         int irq;
 121
 122         struct tegra_output *rgb;
 123
 124         struct list_head list;
 125
 126         struct drm_info_list *debugfs_files;
 127         struct drm_minor *minor;
 128         struct dentry *debugfs;
 129
 130         /* page-flip handling */
 131         struct drm_pending_vblank_event *event;
 132
 133         const struct tegra_dc_soc_info *soc;
 134
 135         struct iommu_domain *domain;
 136 };
 137
 138 static inline struct tegra_dc *
 139 host1x_client_to_dc(struct host1x_client *client)
 140 {
 141         return container_of(client, struct tegra_dc, client);
 142 }
 143
 144 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
 145 {
 146         return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
 147 }
 148
 149 static inline void tegra_dc_writel(struct tegra_dc *dc, u32 value,
 150                                    unsigned long offset)
 151 {
 152         writel(value, dc->regs + (offset << 2));
 153 }
 154
 155 static inline u32 tegra_dc_readl(struct tegra_dc *dc, unsigned long offset)
 156 {
 157         return readl(dc->regs + (offset << 2));
 158 }
 159
 160 struct tegra_dc_window {
 161         struct {
 162                 unsigned int x;
 163                 unsigned int y;
 164                 unsigned int w;
 165                 unsigned int h;
 166         } src;
 167         struct {
 168                 unsigned int x;
 169                 unsigned int y;
 170                 unsigned int w;
 171                 unsigned int h;
 172         } dst;
 173         unsigned int bits_per_pixel;
 174         unsigned int stride[2];
 175         unsigned long base[3];
 176         bool bottom_up;
 177
 178         struct tegra_bo_tiling tiling;
 179         u32 format;
 180         u32 swap;
 181 };
 182
 183 /* from dc.c */
 184 u32 tegra_dc_get_vblank_counter(struct tegra_dc *dc);
 185 void tegra_dc_enable_vblank(struct tegra_dc *dc);
 186 void tegra_dc_disable_vblank(struct tegra_dc *dc);
 187 void tegra_dc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
 188 void tegra_dc_commit(struct tegra_dc *dc);
 189 int tegra_dc_state_setup_clock(struct tegra_dc *dc,
 190                                struct drm_crtc_state *crtc_state,
 191                                struct clk *clk, unsigned long pclk,
 192                                unsigned int div);
 193
 194 struct tegra_output {
 195         struct device_node *of_node;
 196         struct device *dev;
 197
 198         struct drm_panel *panel;
 199         struct i2c_adapter *ddc;
 200         const struct edid *edid;
 201         unsigned int hpd_irq;
 202         int hpd_gpio;
 203
 204         struct drm_encoder encoder;
 205         struct drm_connector connector;
 206 };
 207
 208 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 209 {
 210         return container_of(e, struct tegra_output, encoder);
 211 }
 212
 213 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 214 {
 215         return container_of(c, struct tegra_output, connector);
 216 }
 217
 218 /* from rgb.c */
 219 int tegra_dc_rgb_probe(struct tegra_dc *dc);
 220 int tegra_dc_rgb_remove(struct tegra_dc *dc);
 221 int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 222 int tegra_dc_rgb_exit(struct tegra_dc *dc);
 223
 224 /* from output.c */
 225 int tegra_output_probe(struct tegra_output *output);
 226 void tegra_output_remove(struct tegra_output *output);
 227 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 228 void tegra_output_exit(struct tegra_output *output);
 229
 230 int tegra_output_connector_get_modes(struct drm_connector *connector);
 231 struct drm_encoder *
 232 tegra_output_connector_best_encoder(struct drm_connector *connector);
 233 enum drm_connector_status
 234 tegra_output_connector_detect(struct drm_connector *connector, bool force);
 235 void tegra_output_connector_destroy(struct drm_connector *connector);
 236
 237 void tegra_output_encoder_destroy(struct drm_encoder *encoder);
 238
 239 /* from dpaux.c */
 240 struct tegra_dpaux;
 241 struct drm_dp_link;
 242
 243 struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
 244 enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
 245 int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
 246 int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
 247 int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
 248 int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
 249 int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
 250 int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
 251                       u8 pattern);
 252
 253 /* from fb.c */
 254 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 255                                     unsigned int index);
 256 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 257 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 258                         struct tegra_bo_tiling *tiling);
 259 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 260                                         struct drm_file *file,
 261                                         struct drm_mode_fb_cmd2 *cmd);
 262 int tegra_drm_fb_prepare(struct drm_device *drm);
 263 void tegra_drm_fb_free(struct drm_device *drm);
 264 int tegra_drm_fb_init(struct drm_device *drm);
 265 void tegra_drm_fb_exit(struct drm_device *drm);
 266 #ifdef CONFIG_DRM_TEGRA_FBDEV
 267 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 268 void tegra_fb_output_poll_changed(struct drm_device *drm);
 269 #endif
 270
 271 extern struct platform_driver tegra_dc_driver;
 272 extern struct platform_driver tegra_dsi_driver;
 273 extern struct platform_driver tegra_sor_driver;
 274 extern struct platform_driver tegra_hdmi_driver;
 275 extern struct platform_driver tegra_dpaux_driver;
 276 extern struct platform_driver tegra_gr2d_driver;
 277 extern struct platform_driver tegra_gr3d_driver;
 278
 279 #endif /* HOST1X_DRM_H */