drivers/gpu/drm/tegra/drm.h

   1 /*
   2  * Copyright (C) 2012 Avionic Design GmbH
   3  * Copyright (C) 2012 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 TEGRA_DRM_H
  11 #define TEGRA_DRM_H 1
  12
  13 #include <drm/drmP.h>
  14 #include <drm/drm_crtc_helper.h>
  15 #include <drm/drm_edid.h>
  16 #include <drm/drm_fb_helper.h>
  17 #include <drm/drm_gem_cma_helper.h>
  18 #include <drm/drm_fb_cma_helper.h>
  19 #include <drm/drm_fixed.h>
  20
  21 struct host1x {
  22         struct drm_device *drm;
  23         struct device *dev;
  24         void __iomem *regs;
  25         struct clk *clk;
  26         int syncpt;
  27         int irq;
  28
  29         struct mutex drm_clients_lock;
  30         struct list_head drm_clients;
  31         struct list_head drm_active;
  32
  33         struct mutex clients_lock;
  34         struct list_head clients;
  35
  36         struct drm_fbdev_cma *fbdev;
  37 };
  38
  39 struct host1x_client;
  40
  41 struct host1x_client_ops {
  42         int (*drm_init)(struct host1x_client *client, struct drm_device *drm);
  43         int (*drm_exit)(struct host1x_client *client);
  44 };
  45
  46 struct host1x_client {
  47         struct host1x *host1x;
  48         struct device *dev;
  49
  50         const struct host1x_client_ops *ops;
  51
  52         struct list_head list;
  53 };
  54
  55 extern int host1x_drm_init(struct host1x *host1x, struct drm_device *drm);
  56 extern int host1x_drm_exit(struct host1x *host1x);
  57
  58 extern int host1x_register_client(struct host1x *host1x,
  59                                   struct host1x_client *client);
  60 extern int host1x_unregister_client(struct host1x *host1x,
  61                                     struct host1x_client *client);
  62
  63 struct tegra_output;
  64
  65 struct tegra_dc {
  66         struct host1x_client client;
  67         spinlock_t lock;
  68
  69         struct host1x *host1x;
  70         struct device *dev;
  71
  72         struct drm_crtc base;
  73         int pipe;
  74
  75         struct clk *clk;
  76
  77         void __iomem *regs;
  78         int irq;
  79
  80         struct tegra_output *rgb;
  81
  82         struct list_head list;
  83
  84         struct drm_info_list *debugfs_files;
  85         struct drm_minor *minor;
  86         struct dentry *debugfs;
  87
  88         /* page-flip handling */
  89         struct drm_pending_vblank_event *event;
  90 };
  91
  92 static inline struct tegra_dc *host1x_client_to_dc(struct host1x_client *client)
  93 {
  94         return container_of(client, struct tegra_dc, client);
  95 }
  96
  97 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
  98 {
  99         return container_of(crtc, struct tegra_dc, base);
 100 }
 101
 102 static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long value,
 103                                    unsigned long reg)
 104 {
 105         writel(value, dc->regs + (reg << 2));
 106 }
 107
 108 static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
 109                                            unsigned long reg)
 110 {
 111         return readl(dc->regs + (reg << 2));
 112 }
 113
 114 struct tegra_dc_window {
 115         struct {
 116                 unsigned int x;
 117                 unsigned int y;
 118                 unsigned int w;
 119                 unsigned int h;
 120         } src;
 121         struct {
 122                 unsigned int x;
 123                 unsigned int y;
 124                 unsigned int w;
 125                 unsigned int h;
 126         } dst;
 127         unsigned int bits_per_pixel;
 128         unsigned int format;
 129         unsigned int stride[2];
 130         unsigned long base[3];
 131 };
 132
 133 /* from dc.c */
 134 extern unsigned int tegra_dc_format(uint32_t format);
 135 extern int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
 136                                  const struct tegra_dc_window *window);
 137 extern void tegra_dc_enable_vblank(struct tegra_dc *dc);
 138 extern void tegra_dc_disable_vblank(struct tegra_dc *dc);
 139 extern void tegra_dc_cancel_page_flip(struct drm_crtc *crtc,
 140                                       struct drm_file *file);
 141
 142 struct tegra_output_ops {
 143         int (*enable)(struct tegra_output *output);
 144         int (*disable)(struct tegra_output *output);
 145         int (*setup_clock)(struct tegra_output *output, struct clk *clk,
 146                            unsigned long pclk);
 147         int (*check_mode)(struct tegra_output *output,
 148                           struct drm_display_mode *mode,
 149                           enum drm_mode_status *status);
 150 };
 151
 152 enum tegra_output_type {
 153         TEGRA_OUTPUT_RGB,
 154         TEGRA_OUTPUT_HDMI,
 155 };
 156
 157 struct tegra_output {
 158         struct device_node *of_node;
 159         struct device *dev;
 160
 161         const struct tegra_output_ops *ops;
 162         enum tegra_output_type type;
 163
 164         struct i2c_adapter *ddc;
 165         const struct edid *edid;
 166         unsigned int hpd_irq;
 167         int hpd_gpio;
 168
 169         struct drm_encoder encoder;
 170         struct drm_connector connector;
 171 };
 172
 173 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 174 {
 175         return container_of(e, struct tegra_output, encoder);
 176 }
 177
 178 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 179 {
 180         return container_of(c, struct tegra_output, connector);
 181 }
 182
 183 static inline int tegra_output_enable(struct tegra_output *output)
 184 {
 185         if (output && output->ops && output->ops->enable)
 186                 return output->ops->enable(output);
 187
 188         return output ? -ENOSYS : -EINVAL;
 189 }
 190
 191 static inline int tegra_output_disable(struct tegra_output *output)
 192 {
 193         if (output && output->ops && output->ops->disable)
 194                 return output->ops->disable(output);
 195
 196         return output ? -ENOSYS : -EINVAL;
 197 }
 198
 199 static inline int tegra_output_setup_clock(struct tegra_output *output,
 200                                            struct clk *clk, unsigned long pclk)
 201 {
 202         if (output && output->ops && output->ops->setup_clock)
 203                 return output->ops->setup_clock(output, clk, pclk);
 204
 205         return output ? -ENOSYS : -EINVAL;
 206 }
 207
 208 static inline int tegra_output_check_mode(struct tegra_output *output,
 209                                           struct drm_display_mode *mode,
 210                                           enum drm_mode_status *status)
 211 {
 212         if (output && output->ops && output->ops->check_mode)
 213                 return output->ops->check_mode(output, mode, status);
 214
 215         return output ? -ENOSYS : -EINVAL;
 216 }
 217
 218 /* from rgb.c */
 219 extern int tegra_dc_rgb_probe(struct tegra_dc *dc);
 220 extern int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 221 extern int tegra_dc_rgb_exit(struct tegra_dc *dc);
 222
 223 /* from output.c */
 224 extern int tegra_output_parse_dt(struct tegra_output *output);
 225 extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 226 extern int tegra_output_exit(struct tegra_output *output);
 227
 228 /* from fb.c */
 229 extern int tegra_drm_fb_init(struct drm_device *drm);
 230 extern void tegra_drm_fb_exit(struct drm_device *drm);
 231
 232 extern struct platform_driver tegra_host1x_driver;
 233 extern struct platform_driver tegra_hdmi_driver;
 234 extern struct platform_driver tegra_dc_driver;
 235 extern struct drm_driver tegra_drm_driver;
 236
 237 #endif /* TEGRA_DRM_H */