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