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 #include <linux/iova.h>
  16 #include <linux/of_gpio.h>
  17
  18 #include <drm/drmP.h>
  19 #include <drm/drm_crtc_helper.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
  25 #include "gem.h"
  26
  27 struct reset_control;
  28
  29 struct tegra_fb {
  30         struct drm_framebuffer base;
  31         struct tegra_bo **planes;
  32         unsigned int num_planes;
  33 };
  34
  35 #ifdef CONFIG_DRM_FBDEV_EMULATION
  36 struct tegra_fbdev {
  37         struct drm_fb_helper base;
  38         struct tegra_fb *fb;
  39 };
  40 #endif
  41
  42 struct tegra_drm {
  43         struct drm_device *drm;
  44
  45         struct iommu_domain *domain;
  46         struct mutex mm_lock;
  47         struct drm_mm mm;
  48
  49         struct {
  50                 struct iova_domain domain;
  51                 unsigned long shift;
  52                 unsigned long limit;
  53         } carveout;
  54
  55         struct mutex clients_lock;
  56         struct list_head clients;
  57
  58 #ifdef CONFIG_DRM_FBDEV_EMULATION
  59         struct tegra_fbdev *fbdev;
  60 #endif
  61
  62         unsigned int pitch_align;
  63
  64         struct {
  65                 struct drm_atomic_state *state;
  66                 struct work_struct work;
  67                 struct mutex lock;
  68         } commit;
  69
  70         struct drm_atomic_state *state;
  71 };
  72
  73 struct tegra_drm_client;
  74
  75 struct tegra_drm_context {
  76         struct tegra_drm_client *client;
  77         struct host1x_channel *channel;
  78         unsigned int id;
  79 };
  80
  81 struct tegra_drm_client_ops {
  82         int (*open_channel)(struct tegra_drm_client *client,
  83                             struct tegra_drm_context *context);
  84         void (*close_channel)(struct tegra_drm_context *context);
  85         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  86         int (*is_valid_class)(u32 class);
  87         int (*submit)(struct tegra_drm_context *context,
  88                       struct drm_tegra_submit *args, struct drm_device *drm,
  89                       struct drm_file *file);
  90 };
  91
  92 int tegra_drm_submit(struct tegra_drm_context *context,
  93                      struct drm_tegra_submit *args, struct drm_device *drm,
  94                      struct drm_file *file);
  95
  96 struct tegra_drm_client {
  97         struct host1x_client base;
  98         struct list_head list;
  99
 100         const struct tegra_drm_client_ops *ops;
 101 };
 102
 103 static inline struct tegra_drm_client *
 104 host1x_to_drm_client(struct host1x_client *client)
 105 {
 106         return container_of(client, struct tegra_drm_client, base);
 107 }
 108
 109 int tegra_drm_register_client(struct tegra_drm *tegra,
 110                               struct tegra_drm_client *client);
 111 int tegra_drm_unregister_client(struct tegra_drm *tegra,
 112                                 struct tegra_drm_client *client);
 113
 114 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 115 int tegra_drm_exit(struct tegra_drm *tegra);
 116
 117 void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
 118 void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
 119                     dma_addr_t iova);
 120
 121 struct tegra_dc_soc_info;
 122 struct tegra_output;
 123
 124 struct tegra_dc_stats {
 125         unsigned long frames;
 126         unsigned long vblank;
 127         unsigned long underflow;
 128         unsigned long overflow;
 129 };
 130
 131 struct tegra_dc {
 132         struct host1x_client client;
 133         struct host1x_syncpt *syncpt;
 134         struct device *dev;
 135         spinlock_t lock;
 136
 137         struct drm_crtc base;
 138         unsigned int powergate;
 139         int pipe;
 140
 141         struct clk *clk;
 142         struct reset_control *rst;
 143         void __iomem *regs;
 144         int irq;
 145
 146         struct tegra_output *rgb;
 147
 148         struct tegra_dc_stats stats;
 149         struct list_head list;
 150
 151         struct drm_info_list *debugfs_files;
 152         struct drm_minor *minor;
 153         struct dentry *debugfs;
 154
 155         /* page-flip handling */
 156         struct drm_pending_vblank_event *event;
 157
 158         const struct tegra_dc_soc_info *soc;
 159
 160         struct iommu_domain *domain;
 161 };
 162
 163 static inline struct tegra_dc *
 164 host1x_client_to_dc(struct host1x_client *client)
 165 {
 166         return container_of(client, struct tegra_dc, client);
 167 }
 168
 169 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
 170 {
 171         return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
 172 }
 173
 174 static inline void tegra_dc_writel(struct tegra_dc *dc, u32 value,
 175                                    unsigned long offset)
 176 {
 177         writel(value, dc->regs + (offset << 2));
 178 }
 179
 180 static inline u32 tegra_dc_readl(struct tegra_dc *dc, unsigned long offset)
 181 {
 182         return readl(dc->regs + (offset << 2));
 183 }
 184
 185 struct tegra_dc_window {
 186         struct {
 187                 unsigned int x;
 188                 unsigned int y;
 189                 unsigned int w;
 190                 unsigned int h;
 191         } src;
 192         struct {
 193                 unsigned int x;
 194                 unsigned int y;
 195                 unsigned int w;
 196                 unsigned int h;
 197         } dst;
 198         unsigned int bits_per_pixel;
 199         unsigned int stride[2];
 200         unsigned long base[3];
 201         bool bottom_up;
 202
 203         struct tegra_bo_tiling tiling;
 204         u32 format;
 205         u32 swap;
 206 };
 207
 208 /* from dc.c */
 209 void tegra_dc_commit(struct tegra_dc *dc);
 210 int tegra_dc_state_setup_clock(struct tegra_dc *dc,
 211                                struct drm_crtc_state *crtc_state,
 212                                struct clk *clk, unsigned long pclk,
 213                                unsigned int div);
 214
 215 struct tegra_output {
 216         struct device_node *of_node;
 217         struct device *dev;
 218
 219         struct drm_panel *panel;
 220         struct i2c_adapter *ddc;
 221         const struct edid *edid;
 222         unsigned int hpd_irq;
 223         int hpd_gpio;
 224         enum of_gpio_flags hpd_gpio_flags;
 225
 226         struct drm_encoder encoder;
 227         struct drm_connector connector;
 228 };
 229
 230 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 231 {
 232         return container_of(e, struct tegra_output, encoder);
 233 }
 234
 235 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 236 {
 237         return container_of(c, struct tegra_output, connector);
 238 }
 239
 240 /* from rgb.c */
 241 int tegra_dc_rgb_probe(struct tegra_dc *dc);
 242 int tegra_dc_rgb_remove(struct tegra_dc *dc);
 243 int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 244 int tegra_dc_rgb_exit(struct tegra_dc *dc);
 245
 246 /* from output.c */
 247 int tegra_output_probe(struct tegra_output *output);
 248 void tegra_output_remove(struct tegra_output *output);
 249 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 250 void tegra_output_exit(struct tegra_output *output);
 251
 252 int tegra_output_connector_get_modes(struct drm_connector *connector);
 253 enum drm_connector_status
 254 tegra_output_connector_detect(struct drm_connector *connector, bool force);
 255 void tegra_output_connector_destroy(struct drm_connector *connector);
 256
 257 void tegra_output_encoder_destroy(struct drm_encoder *encoder);
 258
 259 /* from dpaux.c */
 260 struct drm_dp_link;
 261
 262 struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
 263 enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
 264 int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
 265 int drm_dp_aux_detach(struct drm_dp_aux *aux);
 266 int drm_dp_aux_enable(struct drm_dp_aux *aux);
 267 int drm_dp_aux_disable(struct drm_dp_aux *aux);
 268 int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
 269 int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
 270                      u8 pattern);
 271
 272 /* from fb.c */
 273 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 274                                     unsigned int index);
 275 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 276 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 277                         struct tegra_bo_tiling *tiling);
 278 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 279                                         struct drm_file *file,
 280                                         const struct drm_mode_fb_cmd2 *cmd);
 281 int tegra_drm_fb_prepare(struct drm_device *drm);
 282 void tegra_drm_fb_free(struct drm_device *drm);
 283 int tegra_drm_fb_init(struct drm_device *drm);
 284 void tegra_drm_fb_exit(struct drm_device *drm);
 285 void tegra_drm_fb_suspend(struct drm_device *drm);
 286 void tegra_drm_fb_resume(struct drm_device *drm);
 287 #ifdef CONFIG_DRM_FBDEV_EMULATION
 288 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 289 void tegra_fb_output_poll_changed(struct drm_device *drm);
 290 #endif
 291
 292 extern struct platform_driver tegra_dc_driver;
 293 extern struct platform_driver tegra_hdmi_driver;
 294 extern struct platform_driver tegra_dsi_driver;
 295 extern struct platform_driver tegra_dpaux_driver;
 296 extern struct platform_driver tegra_sor_driver;
 297 extern struct platform_driver tegra_gr2d_driver;
 298 extern struct platform_driver tegra_gr3d_driver;
 299 extern struct platform_driver tegra_vic_driver;
 300
 301 #endif /* HOST1X_DRM_H */