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