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         struct device *dev;
  36
  37         struct mutex subdevs_lock;
  38         struct list_head subdevs;
  39         struct list_head active;
  40
  41         struct mutex clients_lock;
  42         struct list_head clients;
  43
  44         struct tegra_fbdev *fbdev;
  45 };
  46
  47 struct host1x_client;
  48
  49 struct tegra_drm_context {
  50         struct host1x_client *client;
  51         struct host1x_channel *channel;
  52         struct list_head list;
  53 };
  54
  55 struct host1x_client_ops {
  56         int (*drm_init)(struct host1x_client *client, struct drm_device *drm);
  57         int (*drm_exit)(struct host1x_client *client);
  58         int (*open_channel)(struct host1x_client *client,
  59                             struct tegra_drm_context *context);
  60         void (*close_channel)(struct tegra_drm_context *context);
  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 struct host1x_client {
  67         struct tegra_drm *tegra;
  68         struct device *dev;
  69
  70         const struct host1x_client_ops *ops;
  71
  72         enum host1x_class class;
  73         struct host1x_channel *channel;
  74
  75         struct host1x_syncpt **syncpts;
  76         unsigned int num_syncpts;
  77
  78         struct list_head list;
  79 };
  80
  81 extern int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
  82 extern int tegra_drm_exit(struct tegra_drm *tegra);
  83
  84 extern int host1x_register_client(struct tegra_drm *tegra,
  85                                   struct host1x_client *client);
  86 extern int host1x_unregister_client(struct tegra_drm *tegra,
  87                                     struct host1x_client *client);
  88
  89 struct tegra_output;
  90
  91 struct tegra_dc {
  92         struct host1x_client client;
  93         struct device *dev;
  94         spinlock_t lock;
  95
  96         struct drm_crtc base;
  97         int pipe;
  98
  99         struct clk *clk;
 100         void __iomem *regs;
 101         int irq;
 102
 103         struct tegra_output *rgb;
 104
 105         struct list_head list;
 106
 107         struct drm_info_list *debugfs_files;
 108         struct drm_minor *minor;
 109         struct dentry *debugfs;
 110
 111         /* page-flip handling */
 112         struct drm_pending_vblank_event *event;
 113 };
 114
 115 static inline struct tegra_dc *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 container_of(crtc, struct tegra_dc, base);
 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 };
 155
 156 /* from dc.c */
 157 extern unsigned int tegra_dc_format(uint32_t format);
 158 extern int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
 159                                  const struct tegra_dc_window *window);
 160 extern void tegra_dc_enable_vblank(struct tegra_dc *dc);
 161 extern void tegra_dc_disable_vblank(struct tegra_dc *dc);
 162 extern void tegra_dc_cancel_page_flip(struct drm_crtc *crtc,
 163                                       struct drm_file *file);
 164
 165 struct tegra_output_ops {
 166         int (*enable)(struct tegra_output *output);
 167         int (*disable)(struct tegra_output *output);
 168         int (*setup_clock)(struct tegra_output *output, struct clk *clk,
 169                            unsigned long pclk);
 170         int (*check_mode)(struct tegra_output *output,
 171                           struct drm_display_mode *mode,
 172                           enum drm_mode_status *status);
 173 };
 174
 175 enum tegra_output_type {
 176         TEGRA_OUTPUT_RGB,
 177         TEGRA_OUTPUT_HDMI,
 178 };
 179
 180 struct tegra_output {
 181         struct device_node *of_node;
 182         struct device *dev;
 183
 184         const struct tegra_output_ops *ops;
 185         enum tegra_output_type type;
 186
 187         struct i2c_adapter *ddc;
 188         const struct edid *edid;
 189         unsigned int hpd_irq;
 190         int hpd_gpio;
 191
 192         struct drm_encoder encoder;
 193         struct drm_connector connector;
 194 };
 195
 196 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 197 {
 198         return container_of(e, struct tegra_output, encoder);
 199 }
 200
 201 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 202 {
 203         return container_of(c, struct tegra_output, connector);
 204 }
 205
 206 static inline int tegra_output_enable(struct tegra_output *output)
 207 {
 208         if (output && output->ops && output->ops->enable)
 209                 return output->ops->enable(output);
 210
 211         return output ? -ENOSYS : -EINVAL;
 212 }
 213
 214 static inline int tegra_output_disable(struct tegra_output *output)
 215 {
 216         if (output && output->ops && output->ops->disable)
 217                 return output->ops->disable(output);
 218
 219         return output ? -ENOSYS : -EINVAL;
 220 }
 221
 222 static inline int tegra_output_setup_clock(struct tegra_output *output,
 223                                            struct clk *clk, unsigned long pclk)
 224 {
 225         if (output && output->ops && output->ops->setup_clock)
 226                 return output->ops->setup_clock(output, clk, pclk);
 227
 228         return output ? -ENOSYS : -EINVAL;
 229 }
 230
 231 static inline int tegra_output_check_mode(struct tegra_output *output,
 232                                           struct drm_display_mode *mode,
 233                                           enum drm_mode_status *status)
 234 {
 235         if (output && output->ops && output->ops->check_mode)
 236                 return output->ops->check_mode(output, mode, status);
 237
 238         return output ? -ENOSYS : -EINVAL;
 239 }
 240
 241 /* from rgb.c */
 242 extern int tegra_dc_rgb_probe(struct tegra_dc *dc);
 243 extern int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 244 extern int tegra_dc_rgb_exit(struct tegra_dc *dc);
 245
 246 /* from output.c */
 247 extern int tegra_output_parse_dt(struct tegra_output *output);
 248 extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 249 extern int tegra_output_exit(struct tegra_output *output);
 250
 251 /* from fb.c */
 252 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 253                                     unsigned int index);
 254 extern int tegra_drm_fb_init(struct drm_device *drm);
 255 extern void tegra_drm_fb_exit(struct drm_device *drm);
 256 extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 257
 258 extern struct drm_driver tegra_drm_driver;
 259
 260 #endif /* HOST1X_DRM_H */