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 #include <linux/iova.h>
  16 #include <linux/of_gpio.h>
  17
  18 #include <drm/drmP.h>
  19 #include <drm/drm_atomic.h>
  20 #include <drm/drm_crtc_helper.h>
  21 #include <drm/drm_edid.h>
  22 #include <drm/drm_encoder.h>
  23 #include <drm/drm_fb_helper.h>
  24 #include <drm/drm_fixed.h>
  25
  26 #include "gem.h"
  27 #include "hub.h"
  28 #include "trace.h"
  29
  30 struct reset_control;
  31
  32 struct tegra_fb {
  33         struct drm_framebuffer base;
  34         struct tegra_bo **planes;
  35         unsigned int num_planes;
  36 };
  37
  38 #ifdef CONFIG_DRM_FBDEV_EMULATION
  39 struct tegra_fbdev {
  40         struct drm_fb_helper base;
  41         struct tegra_fb *fb;
  42 };
  43 #endif
  44
  45 struct tegra_atomic_state {
  46         struct drm_atomic_state base;
  47
  48         struct clk *clk_disp;
  49         struct tegra_dc *dc;
  50         unsigned long rate;
  51 };
  52
  53 static inline struct tegra_atomic_state *
  54 to_tegra_atomic_state(struct drm_atomic_state *state)
  55 {
  56         return container_of(state, struct tegra_atomic_state, base);
  57 }
  58
  59 struct tegra_drm {
  60         struct drm_device *drm;
  61
  62         struct iommu_domain *domain;
  63         struct iommu_group *group;
  64         struct mutex mm_lock;
  65         struct drm_mm mm;
  66
  67         struct {
  68                 struct iova_domain domain;
  69                 unsigned long shift;
  70                 unsigned long limit;
  71         } carveout;
  72
  73         struct mutex clients_lock;
  74         struct list_head clients;
  75
  76 #ifdef CONFIG_DRM_FBDEV_EMULATION
  77         struct tegra_fbdev *fbdev;
  78 #endif
  79
  80         unsigned int pitch_align;
  81
  82         struct tegra_display_hub *hub;
  83
  84         struct drm_atomic_state *state;
  85 };
  86
  87 struct tegra_drm_client;
  88
  89 struct tegra_drm_context {
  90         struct tegra_drm_client *client;
  91         struct host1x_channel *channel;
  92         unsigned int id;
  93 };
  94
  95 struct tegra_drm_client_ops {
  96         int (*open_channel)(struct tegra_drm_client *client,
  97                             struct tegra_drm_context *context);
  98         void (*close_channel)(struct tegra_drm_context *context);
  99         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
 100         int (*is_valid_class)(u32 class);
 101         int (*submit)(struct tegra_drm_context *context,
 102                       struct drm_tegra_submit *args, struct drm_device *drm,
 103                       struct drm_file *file);
 104 };
 105
 106 int tegra_drm_submit(struct tegra_drm_context *context,
 107                      struct drm_tegra_submit *args, struct drm_device *drm,
 108                      struct drm_file *file);
 109
 110 struct tegra_drm_client {
 111         struct host1x_client base;
 112         struct list_head list;
 113
 114         const struct tegra_drm_client_ops *ops;
 115 };
 116
 117 static inline struct tegra_drm_client *
 118 host1x_to_drm_client(struct host1x_client *client)
 119 {
 120         return container_of(client, struct tegra_drm_client, base);
 121 }
 122
 123 int tegra_drm_register_client(struct tegra_drm *tegra,
 124                               struct tegra_drm_client *client);
 125 int tegra_drm_unregister_client(struct tegra_drm *tegra,
 126                                 struct tegra_drm_client *client);
 127
 128 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 129 int tegra_drm_exit(struct tegra_drm *tegra);
 130
 131 void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
 132 void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
 133                     dma_addr_t iova);
 134
 135 struct cec_notifier;
 136
 137 struct tegra_output {
 138         struct device_node *of_node;
 139         struct device *dev;
 140
 141         struct drm_panel *panel;
 142         struct i2c_adapter *ddc;
 143         const struct edid *edid;
 144         struct cec_notifier *notifier;
 145         unsigned int hpd_irq;
 146         int hpd_gpio;
 147         enum of_gpio_flags hpd_gpio_flags;
 148
 149         struct drm_encoder encoder;
 150         struct drm_connector connector;
 151 };
 152
 153 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 154 {
 155         return container_of(e, struct tegra_output, encoder);
 156 }
 157
 158 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 159 {
 160         return container_of(c, struct tegra_output, connector);
 161 }
 162
 163 /* from output.c */
 164 int tegra_output_probe(struct tegra_output *output);
 165 void tegra_output_remove(struct tegra_output *output);
 166 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 167 void tegra_output_exit(struct tegra_output *output);
 168 void tegra_output_find_possible_crtcs(struct tegra_output *output,
 169                                       struct drm_device *drm);
 170
 171 int tegra_output_connector_get_modes(struct drm_connector *connector);
 172 enum drm_connector_status
 173 tegra_output_connector_detect(struct drm_connector *connector, bool force);
 174 void tegra_output_connector_destroy(struct drm_connector *connector);
 175
 176 void tegra_output_encoder_destroy(struct drm_encoder *encoder);
 177
 178 /* from dpaux.c */
 179 struct drm_dp_link;
 180
 181 struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
 182 enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
 183 int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
 184 int drm_dp_aux_detach(struct drm_dp_aux *aux);
 185 int drm_dp_aux_enable(struct drm_dp_aux *aux);
 186 int drm_dp_aux_disable(struct drm_dp_aux *aux);
 187 int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
 188 int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
 189                      u8 pattern);
 190
 191 /* from fb.c */
 192 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 193                                     unsigned int index);
 194 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 195 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 196                         struct tegra_bo_tiling *tiling);
 197 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 198                                         struct drm_file *file,
 199                                         const struct drm_mode_fb_cmd2 *cmd);
 200 int tegra_drm_fb_prepare(struct drm_device *drm);
 201 void tegra_drm_fb_free(struct drm_device *drm);
 202 int tegra_drm_fb_init(struct drm_device *drm);
 203 void tegra_drm_fb_exit(struct drm_device *drm);
 204 void tegra_drm_fb_suspend(struct drm_device *drm);
 205 void tegra_drm_fb_resume(struct drm_device *drm);
 206
 207 extern struct platform_driver tegra_display_hub_driver;
 208 extern struct platform_driver tegra_dc_driver;
 209 extern struct platform_driver tegra_hdmi_driver;
 210 extern struct platform_driver tegra_dsi_driver;
 211 extern struct platform_driver tegra_dpaux_driver;
 212 extern struct platform_driver tegra_sor_driver;
 213 extern struct platform_driver tegra_gr2d_driver;
 214 extern struct platform_driver tegra_gr3d_driver;
 215 extern struct platform_driver tegra_vic_driver;
 216
 217 #endif /* HOST1X_DRM_H */