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 struct reset_control;
  23
  24 struct tegra_fb {
  25         struct drm_framebuffer base;
  26         struct tegra_bo **planes;
  27         unsigned int num_planes;
  28 };
  29
  30 #ifdef CONFIG_DRM_TEGRA_FBDEV
  31 struct tegra_fbdev {
  32         struct drm_fb_helper base;
  33         struct tegra_fb *fb;
  34 };
  35 #endif
  36
  37 struct tegra_drm {
  38         struct drm_device *drm;
  39
  40         struct mutex clients_lock;
  41         struct list_head clients;
  42
  43 #ifdef CONFIG_DRM_TEGRA_FBDEV
  44         struct tegra_fbdev *fbdev;
  45 #endif
  46 };
  47
  48 struct tegra_drm_client;
  49
  50 struct tegra_drm_context {
  51         struct tegra_drm_client *client;
  52         struct host1x_channel *channel;
  53         struct list_head list;
  54 };
  55
  56 struct tegra_drm_client_ops {
  57         int (*open_channel)(struct tegra_drm_client *client,
  58                             struct tegra_drm_context *context);
  59         void (*close_channel)(struct tegra_drm_context *context);
  60         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  61         int (*submit)(struct tegra_drm_context *context,
  62                       struct drm_tegra_submit *args, struct drm_device *drm,
  63                       struct drm_file *file);
  64 };
  65
  66 int tegra_drm_submit(struct tegra_drm_context *context,
  67                      struct drm_tegra_submit *args, struct drm_device *drm,
  68                      struct drm_file *file);
  69
  70 struct tegra_drm_client {
  71         struct host1x_client base;
  72         struct list_head list;
  73
  74         const struct tegra_drm_client_ops *ops;
  75 };
  76
  77 static inline struct tegra_drm_client *
  78 host1x_to_drm_client(struct host1x_client *client)
  79 {
  80         return container_of(client, struct tegra_drm_client, base);
  81 }
  82
  83 extern int tegra_drm_register_client(struct tegra_drm *tegra,
  84                                      struct tegra_drm_client *client);
  85 extern int tegra_drm_unregister_client(struct tegra_drm *tegra,
  86                                        struct tegra_drm_client *client);
  87
  88 extern int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
  89 extern int tegra_drm_exit(struct tegra_drm *tegra);
  90
  91 struct tegra_dc_soc_info;
  92 struct tegra_output;
  93
  94 struct tegra_dc {
  95         struct host1x_client client;
  96         struct device *dev;
  97         spinlock_t lock;
  98
  99         struct drm_crtc base;
 100         int pipe;
 101
 102         struct clk *clk;
 103         struct reset_control *rst;
 104         void __iomem *regs;
 105         int irq;
 106
 107         struct tegra_output *rgb;
 108
 109         struct list_head list;
 110
 111         struct drm_info_list *debugfs_files;
 112         struct drm_minor *minor;
 113         struct dentry *debugfs;
 114
 115         /* page-flip handling */
 116         struct drm_pending_vblank_event *event;
 117
 118         const struct tegra_dc_soc_info *soc;
 119 };
 120
 121 static inline struct tegra_dc *
 122 host1x_client_to_dc(struct host1x_client *client)
 123 {
 124         return container_of(client, struct tegra_dc, client);
 125 }
 126
 127 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
 128 {
 129         return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
 130 }
 131
 132 static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long value,
 133                                    unsigned long reg)
 134 {
 135         writel(value, dc->regs + (reg << 2));
 136 }
 137
 138 static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
 139                                            unsigned long reg)
 140 {
 141         return readl(dc->regs + (reg << 2));
 142 }
 143
 144 struct tegra_dc_window {
 145         struct {
 146                 unsigned int x;
 147                 unsigned int y;
 148                 unsigned int w;
 149                 unsigned int h;
 150         } src;
 151         struct {
 152                 unsigned int x;
 153                 unsigned int y;
 154                 unsigned int w;
 155                 unsigned int h;
 156         } dst;
 157         unsigned int bits_per_pixel;
 158         unsigned int format;
 159         unsigned int stride[2];
 160         unsigned long base[3];
 161         bool bottom_up;
 162         bool tiled;
 163 };
 164
 165 /* from dc.c */
 166 extern unsigned int tegra_dc_format(uint32_t format);
 167 extern int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
 168                                  const struct tegra_dc_window *window);
 169 extern void tegra_dc_enable_vblank(struct tegra_dc *dc);
 170 extern void tegra_dc_disable_vblank(struct tegra_dc *dc);
 171 extern void tegra_dc_cancel_page_flip(struct drm_crtc *crtc,
 172                                       struct drm_file *file);
 173
 174 struct tegra_output_ops {
 175         int (*enable)(struct tegra_output *output);
 176         int (*disable)(struct tegra_output *output);
 177         int (*setup_clock)(struct tegra_output *output, struct clk *clk,
 178                            unsigned long pclk);
 179         int (*check_mode)(struct tegra_output *output,
 180                           struct drm_display_mode *mode,
 181                           enum drm_mode_status *status);
 182 };
 183
 184 enum tegra_output_type {
 185         TEGRA_OUTPUT_RGB,
 186         TEGRA_OUTPUT_HDMI,
 187         TEGRA_OUTPUT_DSI,
 188 };
 189
 190 struct tegra_output {
 191         struct device_node *of_node;
 192         struct device *dev;
 193
 194         const struct tegra_output_ops *ops;
 195         enum tegra_output_type type;
 196
 197         struct drm_panel *panel;
 198         struct i2c_adapter *ddc;
 199         const struct edid *edid;
 200         unsigned int hpd_irq;
 201         int hpd_gpio;
 202
 203         struct drm_encoder encoder;
 204         struct drm_connector connector;
 205 };
 206
 207 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 208 {
 209         return container_of(e, struct tegra_output, encoder);
 210 }
 211
 212 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 213 {
 214         return container_of(c, struct tegra_output, connector);
 215 }
 216
 217 static inline int tegra_output_enable(struct tegra_output *output)
 218 {
 219         if (output && output->ops && output->ops->enable)
 220                 return output->ops->enable(output);
 221
 222         return output ? -ENOSYS : -EINVAL;
 223 }
 224
 225 static inline int tegra_output_disable(struct tegra_output *output)
 226 {
 227         if (output && output->ops && output->ops->disable)
 228                 return output->ops->disable(output);
 229
 230         return output ? -ENOSYS : -EINVAL;
 231 }
 232
 233 static inline int tegra_output_setup_clock(struct tegra_output *output,
 234                                            struct clk *clk, unsigned long pclk)
 235 {
 236         if (output && output->ops && output->ops->setup_clock)
 237                 return output->ops->setup_clock(output, clk, pclk);
 238
 239         return output ? -ENOSYS : -EINVAL;
 240 }
 241
 242 static inline int tegra_output_check_mode(struct tegra_output *output,
 243                                           struct drm_display_mode *mode,
 244                                           enum drm_mode_status *status)
 245 {
 246         if (output && output->ops && output->ops->check_mode)
 247                 return output->ops->check_mode(output, mode, status);
 248
 249         return output ? -ENOSYS : -EINVAL;
 250 }
 251
 252 /* from bus.c */
 253 int drm_host1x_init(struct drm_driver *driver, struct host1x_device *device);
 254 void drm_host1x_exit(struct drm_driver *driver, struct host1x_device *device);
 255
 256 /* from rgb.c */
 257 extern int tegra_dc_rgb_probe(struct tegra_dc *dc);
 258 extern int tegra_dc_rgb_remove(struct tegra_dc *dc);
 259 extern int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 260 extern int tegra_dc_rgb_exit(struct tegra_dc *dc);
 261
 262 /* from output.c */
 263 extern int tegra_output_probe(struct tegra_output *output);
 264 extern int tegra_output_remove(struct tegra_output *output);
 265 extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 266 extern int tegra_output_exit(struct tegra_output *output);
 267
 268 /* from fb.c */
 269 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 270                                     unsigned int index);
 271 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 272 bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer);
 273 extern int tegra_drm_fb_init(struct drm_device *drm);
 274 extern void tegra_drm_fb_exit(struct drm_device *drm);
 275 #ifdef CONFIG_DRM_TEGRA_FBDEV
 276 extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 277 #endif
 278
 279 extern struct platform_driver tegra_dc_driver;
 280 extern struct platform_driver tegra_dsi_driver;
 281 extern struct platform_driver tegra_hdmi_driver;
 282 extern struct platform_driver tegra_gr2d_driver;
 283 extern struct platform_driver tegra_gr3d_driver;
 284
 285 #endif /* HOST1X_DRM_H */