LXR linux/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
  22struct reset_control;
  23
  24struct tegra_fb {
  25        struct drm_framebuffer base;
  26        struct tegra_bo **planes;
  27        unsigned int num_planes;
  28};
  29
  30#ifdef CONFIG_DRM_TEGRA_FBDEV
  31struct tegra_fbdev {
  32        struct drm_fb_helper base;
  33        struct tegra_fb *fb;
  34};
  35#endif
  36
  37struct tegra_drm {
  38        struct drm_device *drm;
  39
  40        struct mutex clients_lock;
  41        struct list_head clients;
  42
  43#ifdef CONFIG_DRM_TEGRA_FBDEV
  44        struct tegra_fbdev *fbdev;
  45#endif
  46};
  47
  48struct tegra_drm_client;
  49
  50struct tegra_drm_context {
  51        struct tegra_drm_client *client;
  52        struct host1x_channel *channel;
  53        struct list_head list;
  54};
  55
  56struct tegra_drm_client_ops {
  57        int (*open_channel)(struct tegra_drm_client *client,
  58                            struct tegra_drm_context *context);
  59        void (*close_channel)(struct tegra_drm_context *context);
  60        int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  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
  66int tegra_drm_submit(struct tegra_drm_context *context,
  67                     struct drm_tegra_submit *args, struct drm_device *drm,
  68                     struct drm_file *file);
  69
  70struct tegra_drm_client {
  71        struct host1x_client base;
  72        struct list_head list;
  73
  74        const struct tegra_drm_client_ops *ops;
  75};
  76
  77static inline struct tegra_drm_client *
  78host1x_to_drm_client(struct host1x_client *client)
  79{
  80        return container_of(client, struct tegra_drm_client, base);
  81}
  82
  83extern int tegra_drm_register_client(struct tegra_drm *tegra,
  84                                     struct tegra_drm_client *client);
  85extern int tegra_drm_unregister_client(struct tegra_drm *tegra,
  86                                       struct tegra_drm_client *client);
  87
  88extern int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
  89extern int tegra_drm_exit(struct tegra_drm *tegra);
  90
  91struct tegra_dc_soc_info;
  92struct tegra_output;
  93
  94struct tegra_dc {
  95        struct host1x_client client;
  96        struct device *dev;
  97        spinlock_t lock;
  98
  99        struct drm_crtc base;
 100        int pipe;
 101
 102        struct clk *clk;
 103        struct reset_control *rst;
 104        void __iomem *regs;
 105        int irq;
 106
 107        struct tegra_output *rgb;
 108
 109        struct list_head list;
 110
 111        struct drm_info_list *debugfs_files;
 112        struct drm_minor *minor;
 113        struct dentry *debugfs;
 114
 115        /* page-flip handling */
 116        struct drm_pending_vblank_event *event;
 117
 118        const struct tegra_dc_soc_info *soc;
 119};
 120
 121static inline struct tegra_dc *
 122host1x_client_to_dc(struct host1x_client *client)
 123{
 124        return container_of(client, struct tegra_dc, client);
 125}
 126
 127static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
 128{
 129        return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
 130}
 131
 132static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long value,
 133                                   unsigned long reg)
 134{
 135        writel(value, dc->regs + (reg << 2));
 136}
 137
 138static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
 139                                           unsigned long reg)
 140{
 141        return readl(dc->regs + (reg << 2));
 142}
 143
 144struct tegra_dc_window {
 145        struct {
 146                unsigned int x;
 147                unsigned int y;
 148                unsigned int w;
 149                unsigned int h;
 150        } src;
 151        struct {
 152                unsigned int x;
 153                unsigned int y;
 154                unsigned int w;
 155                unsigned int h;
 156        } dst;
 157        unsigned int bits_per_pixel;
 158        unsigned int format;
 159        unsigned int stride[2];
 160        unsigned long base[3];
 161        bool bottom_up;
 162        bool tiled;
 163};
 164
 165/* from dc.c */
 166extern unsigned int tegra_dc_format(uint32_t format);
 167extern int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
 168                                 const struct tegra_dc_window *window);
 169extern void tegra_dc_enable_vblank(struct tegra_dc *dc);
 170extern void tegra_dc_disable_vblank(struct tegra_dc *dc);
 171extern void tegra_dc_cancel_page_flip(struct drm_crtc *crtc,
 172                                      struct drm_file *file);
 173
 174struct tegra_output_ops {
 175        int (*enable)(struct tegra_output *output);
 176        int (*disable)(struct tegra_output *output);
 177        int (*setup_clock)(struct tegra_output *output, struct clk *clk,
 178                           unsigned long pclk);
 179        int (*check_mode)(struct tegra_output *output,
 180                          struct drm_display_mode *mode,
 181                          enum drm_mode_status *status);
 182        enum drm_connector_status (*detect)(struct tegra_output *output);
 183};
 184
 185enum tegra_output_type {
 186        TEGRA_OUTPUT_RGB,
 187        TEGRA_OUTPUT_HDMI,
 188        TEGRA_OUTPUT_DSI,
 189        TEGRA_OUTPUT_EDP,
 190};
 191
 192struct tegra_output {
 193        struct device_node *of_node;
 194        struct device *dev;
 195
 196        const struct tegra_output_ops *ops;
 197        enum tegra_output_type type;
 198
 199        struct drm_panel *panel;
 200        struct i2c_adapter *ddc;
 201        const struct edid *edid;
 202        unsigned int hpd_irq;
 203        int hpd_gpio;
 204
 205        struct drm_encoder encoder;
 206        struct drm_connector connector;
 207};
 208
 209static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 210{
 211        return container_of(e, struct tegra_output, encoder);
 212}
 213
 214static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 215{
 216        return container_of(c, struct tegra_output, connector);
 217}
 218
 219static inline int tegra_output_enable(struct tegra_output *output)
 220{
 221        if (output && output->ops && output->ops->enable)
 222                return output->ops->enable(output);
 223
 224        return output ? -ENOSYS : -EINVAL;
 225}
 226
 227static inline int tegra_output_disable(struct tegra_output *output)
 228{
 229        if (output && output->ops && output->ops->disable)
 230                return output->ops->disable(output);
 231
 232        return output ? -ENOSYS : -EINVAL;
 233}
 234
 235static inline int tegra_output_setup_clock(struct tegra_output *output,
 236                                           struct clk *clk, unsigned long pclk)
 237{
 238        if (output && output->ops && output->ops->setup_clock)
 239                return output->ops->setup_clock(output, clk, pclk);
 240
 241        return output ? -ENOSYS : -EINVAL;
 242}
 243
 244static inline int tegra_output_check_mode(struct tegra_output *output,
 245                                          struct drm_display_mode *mode,
 246                                          enum drm_mode_status *status)
 247{
 248        if (output && output->ops && output->ops->check_mode)
 249                return output->ops->check_mode(output, mode, status);
 250
 251        return output ? -ENOSYS : -EINVAL;
 252}
 253
 254/* from bus.c */
 255int drm_host1x_init(struct drm_driver *driver, struct host1x_device *device);
 256void drm_host1x_exit(struct drm_driver *driver, struct host1x_device *device);
 257
 258/* from rgb.c */
 259extern int tegra_dc_rgb_probe(struct tegra_dc *dc);
 260extern int tegra_dc_rgb_remove(struct tegra_dc *dc);
 261extern int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
 262extern int tegra_dc_rgb_exit(struct tegra_dc *dc);
 263
 264/* from output.c */
 265extern int tegra_output_probe(struct tegra_output *output);
 266extern int tegra_output_remove(struct tegra_output *output);
 267extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 268extern int tegra_output_exit(struct tegra_output *output);
 269
 270/* from dpaux.c */
 271
 272struct tegra_dpaux;
 273struct drm_dp_link;
 274struct drm_dp_aux;
 275
 276struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
 277enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
 278int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
 279int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
 280int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
 281int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
 282int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
 283int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
 284                      u8 pattern);
 285
 286/* from fb.c */
 287struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 288                                    unsigned int index);
 289bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 290bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer);
 291extern int tegra_drm_fb_init(struct drm_device *drm);
 292extern void tegra_drm_fb_exit(struct drm_device *drm);
 293#ifdef CONFIG_DRM_TEGRA_FBDEV
 294extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 295#endif
 296
 297extern struct platform_driver tegra_dc_driver;
 298extern struct platform_driver tegra_dsi_driver;
 299extern struct platform_driver tegra_sor_driver;
 300extern struct platform_driver tegra_hdmi_driver;
 301extern struct platform_driver tegra_dpaux_driver;
 302extern struct platform_driver tegra_gr2d_driver;
 303extern struct platform_driver tegra_gr3d_driver;
 304
 305#endif /* HOST1X_DRM_H */
 306