drivers/gpu/host1x/drm/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 tegra_fb {
  23         struct drm_framebuffer base;
  24         struct tegra_bo **planes;
  25         unsigned int num_planes;
  26 };
  27
  28 struct tegra_fbdev {
  29         struct drm_fb_helper base;
  30         struct tegra_fb *fb;
  31 };
  32
  33 struct tegra_drm {
  34         struct drm_device *drm;
  35
  36         struct mutex clients_lock;
  37         struct list_head clients;
  38
  39         struct tegra_fbdev *fbdev;
  40 };
  41
  42 struct tegra_drm_client;
  43
  44 struct tegra_drm_context {
  45         struct tegra_drm_client *client;
  46         struct host1x_channel *channel;
  47         struct list_head list;
  48 };
  49
  50 struct tegra_drm_client_ops {
  51         int (*open_channel)(struct tegra_drm_client *client,
  52                             struct tegra_drm_context *context);
  53         void (*close_channel)(struct tegra_drm_context *context);
  54         int (*submit)(struct tegra_drm_context *context,
  55                       struct drm_tegra_submit *args, struct drm_device *drm,
  56                       struct drm_file *file);
  57 };
  58
  59 struct tegra_drm_client {
  60         struct host1x_client base;
  61         struct list_head list;
  62
  63         const struct tegra_drm_client_ops *ops;
  64 };
  65
  66 static inline struct tegra_drm_client *
  67 host1x_to_drm_client(struct host1x_client *client)
  68 {
  69         return container_of(client, struct tegra_drm_client, base);
  70 }
  71
  72 extern int tegra_drm_register_client(struct tegra_drm *tegra,
  73                                      struct tegra_drm_client *client);
  74 extern int tegra_drm_unregister_client(struct tegra_drm *tegra,
  75                                        struct tegra_drm_client *client);
  76
  77 extern int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
  78 extern int tegra_drm_exit(struct tegra_drm *tegra);
  79
  80 struct tegra_output;
  81
  82 struct tegra_dc {
  83         struct host1x_client client;
  84         struct device *dev;
  85         spinlock_t lock;
  86
  87         struct drm_crtc base;
  88         int pipe;
  89
  90         struct clk *clk;
  91         void __iomem *regs;
  92         int irq;
  93
  94         struct tegra_output *rgb;
  95
  96         struct list_head list;
  97
  98         struct drm_info_list *debugfs_files;
  99         struct drm_minor *minor;
 100         struct dentry *debugfs;
 101
 102         /* page-flip handling */
 103         struct drm_pending_vblank_event *event;
 104 };
 105
 106 static inline struct tegra_dc *
 107 host1x_client_to_dc(struct host1x_client *client)
 108 {
 109         return container_of(client, struct tegra_dc, client);
 110 }
 111
 112 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
 113 {
 114         return container_of(crtc, struct tegra_dc, base);
 115 }
 116
 117 static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long value,
 118                                    unsigned long reg)
 119 {
 120         writel(value, dc->regs + (reg << 2));
 121 }
 122
 123 static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
 124                                            unsigned long reg)
 125 {
 126         return readl(dc->regs + (reg << 2));
 127 }
 128
 129 struct tegra_dc_window {
 130         struct {
 131                 unsigned int x;
 132                 unsigned int y;
 133                 unsigned int w;
 134                 unsigned int h;
 135         } src;
 136         struct {
 137                 unsigned int x;
 138                 unsigned int y;
 139                 unsigned int w;
 140                 unsigned int h;
 141         } dst;
 142         unsigned int bits_per_pixel;
 143         unsigned int format;
 144         unsigned int stride[2];
 145         unsigned long base[3];
 146 };
 147
 148 /* from dc.c */
 149 extern unsigned int tegra_dc_format(uint32_t format);
 150 extern int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
 151                                  const struct tegra_dc_window *window);
 152 extern void tegra_dc_enable_vblank(struct tegra_dc *dc);
 153 extern void tegra_dc_disable_vblank(struct tegra_dc *dc);
 154 extern void tegra_dc_cancel_page_flip(struct drm_crtc *crtc,
 155                                       struct drm_file *file);
 156
 157 struct tegra_output_ops {
 158         int (*enable)(struct tegra_output *output);
 159         int (*disable)(struct tegra_output *output);
 160         int (*setup_clock)(struct tegra_output *output, struct clk *clk,
 161                            unsigned long pclk);
 162         int (*check_mode)(struct tegra_output *output,
 163                           struct drm_display_mode *mode,
 164                           enum drm_mode_status *status);
 165 };
 166
 167 enum tegra_output_type {
 168         TEGRA_OUTPUT_RGB,
 169         TEGRA_OUTPUT_HDMI,
 170 };
 171
 172 struct tegra_output {
 173         struct device_node *of_node;
 174         struct device *dev;
 175
 176         const struct tegra_output_ops *ops;
 177         enum tegra_output_type type;
 178
 179         struct i2c_adapter *ddc;
 180         const struct edid *edid;
 181         unsigned int hpd_irq;
 182         int hpd_gpio;
 183
 184         struct drm_encoder encoder;
 185         struct drm_connector connector;
 186 };
 187
 188 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 189 {
 190         return container_of(e, struct tegra_output, encoder);
 191 }
 192
 193 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 194 {
 195         return container_of(c, struct tegra_output, connector);
 196 }
 197
 198 static inline int tegra_output_enable(struct tegra_output *output)
 199 {
 200         if (output && output->ops && output->ops->enable)
 201                 return output->ops->enable(output);
 202
 203         return output ? -ENOSYS : -EINVAL;
 204 }
 205
 206 static inline int tegra_output_disable(struct tegra_output *output)
 207 {
 208         if (output && output->ops && output->ops->disable)
 209                 return output->ops->disable(output);
 210
 211         return output ? -ENOSYS : -EINVAL;
 212 }
 213
 214 static inline int tegra_output_setup_clock(struct tegra_output *output,
 215                                            struct clk *clk, unsigned long pclk)
 216 {
 217         if (output && output->ops && output->ops->setup_clock)
 218                 return output->ops->setup_clock(output, clk, pclk);
 219
 220         return output ? -ENOSYS : -EINVAL;
 221 }
 222
 223 static inline int tegra_output_check_mode(struct tegra_output *output,
 224                                           struct drm_display_mode *mode,
 225                                           enum drm_mode_status *status)
 226 {
 227         if (output && output->ops && output->ops->check_mode)
 228                 return output->ops->check_mode(output, mode, status);
 229
 230         return output ? -ENOSYS : -EINVAL;
 231 }
 232
 233 /* from bus.c */
 234 int drm_host1x_init(struct drm_driver *driver, struct host1x_device *device);
 235 void drm_host1x_exit(struct drm_driver *driver, struct host1x_device *device);
 236
 237 /* from rgb.c */
 238 extern int tegra_dc_rgb_probe(struct tegra_dc *dc);
 239 extern int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 240 extern int tegra_dc_rgb_exit(struct tegra_dc *dc);
 241
 242 /* from output.c */
 243 extern int tegra_output_parse_dt(struct tegra_output *output);
 244 extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 245 extern int tegra_output_exit(struct tegra_output *output);
 246
 247 /* from fb.c */
 248 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 249                                     unsigned int index);
 250 extern int tegra_drm_fb_init(struct drm_device *drm);
 251 extern void tegra_drm_fb_exit(struct drm_device *drm);
 252 extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 253
 254 extern struct platform_driver tegra_dc_driver;
 255 extern struct platform_driver tegra_hdmi_driver;
 256 extern struct platform_driver tegra_gr2d_driver;
 257
 258 #endif /* HOST1X_DRM_H */