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 #ifdef CONFIG_DRM_FBDEV_EMULATION
  33 struct tegra_fbdev {
  34         struct drm_fb_helper base;
  35         struct drm_framebuffer *fb;
  36 };
  37 #endif
  38
  39 struct tegra_drm {
  40         struct drm_device *drm;
  41
  42         struct iommu_domain *domain;
  43         struct iommu_group *group;
  44         struct mutex mm_lock;
  45         struct drm_mm mm;
  46
  47         struct {
  48                 struct iova_domain domain;
  49                 unsigned long shift;
  50                 unsigned long limit;
  51         } carveout;
  52
  53         struct mutex clients_lock;
  54         struct list_head clients;
  55
  56 #ifdef CONFIG_DRM_FBDEV_EMULATION
  57         struct tegra_fbdev *fbdev;
  58 #endif
  59
  60         unsigned int pitch_align;
  61
  62         struct tegra_display_hub *hub;
  63
  64         struct drm_atomic_state *state;
  65 };
  66
  67 struct tegra_drm_client;
  68
  69 struct tegra_drm_context {
  70         struct tegra_drm_client *client;
  71         struct host1x_channel *channel;
  72         unsigned int id;
  73 };
  74
  75 struct tegra_drm_client_ops {
  76         int (*open_channel)(struct tegra_drm_client *client,
  77                             struct tegra_drm_context *context);
  78         void (*close_channel)(struct tegra_drm_context *context);
  79         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  80         int (*is_valid_class)(u32 class);
  81         int (*submit)(struct tegra_drm_context *context,
  82                       struct drm_tegra_submit *args, struct drm_device *drm,
  83                       struct drm_file *file);
  84 };
  85
  86 int tegra_drm_submit(struct tegra_drm_context *context,
  87                      struct drm_tegra_submit *args, struct drm_device *drm,
  88                      struct drm_file *file);
  89
  90 struct tegra_drm_client {
  91         struct host1x_client base;
  92         struct list_head list;
  93
  94         unsigned int version;
  95         const struct tegra_drm_client_ops *ops;
  96 };
  97
  98 static inline struct tegra_drm_client *
  99 host1x_to_drm_client(struct host1x_client *client)
 100 {
 101         return container_of(client, struct tegra_drm_client, base);
 102 }
 103
 104 int tegra_drm_register_client(struct tegra_drm *tegra,
 105                               struct tegra_drm_client *client);
 106 int tegra_drm_unregister_client(struct tegra_drm *tegra,
 107                                 struct tegra_drm_client *client);
 108 struct iommu_group *host1x_client_iommu_attach(struct host1x_client *client,
 109                                                bool shared);
 110 void host1x_client_iommu_detach(struct host1x_client *client,
 111                                 struct iommu_group *group);
 112
 113 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 114 int tegra_drm_exit(struct tegra_drm *tegra);
 115
 116 void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
 117 void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
 118                     dma_addr_t iova);
 119
 120 struct cec_notifier;
 121
 122 struct tegra_output {
 123         struct device_node *of_node;
 124         struct device *dev;
 125
 126         struct drm_panel *panel;
 127         struct i2c_adapter *ddc;
 128         const struct edid *edid;
 129         struct cec_notifier *notifier;
 130         unsigned int hpd_irq;
 131         int hpd_gpio;
 132         enum of_gpio_flags hpd_gpio_flags;
 133
 134         struct drm_encoder encoder;
 135         struct drm_connector connector;
 136 };
 137
 138 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 139 {
 140         return container_of(e, struct tegra_output, encoder);
 141 }
 142
 143 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 144 {
 145         return container_of(c, struct tegra_output, connector);
 146 }
 147
 148 /* from output.c */
 149 int tegra_output_probe(struct tegra_output *output);
 150 void tegra_output_remove(struct tegra_output *output);
 151 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 152 void tegra_output_exit(struct tegra_output *output);
 153 void tegra_output_find_possible_crtcs(struct tegra_output *output,
 154                                       struct drm_device *drm);
 155
 156 int tegra_output_connector_get_modes(struct drm_connector *connector);
 157 enum drm_connector_status
 158 tegra_output_connector_detect(struct drm_connector *connector, bool force);
 159 void tegra_output_connector_destroy(struct drm_connector *connector);
 160
 161 void tegra_output_encoder_destroy(struct drm_encoder *encoder);
 162
 163 /* from dpaux.c */
 164 struct drm_dp_link;
 165
 166 struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
 167 enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
 168 int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
 169 int drm_dp_aux_detach(struct drm_dp_aux *aux);
 170 int drm_dp_aux_enable(struct drm_dp_aux *aux);
 171 int drm_dp_aux_disable(struct drm_dp_aux *aux);
 172 int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
 173 int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
 174                      u8 pattern);
 175
 176 /* from fb.c */
 177 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 178                                     unsigned int index);
 179 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 180 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 181                         struct tegra_bo_tiling *tiling);
 182 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 183                                         struct drm_file *file,
 184                                         const struct drm_mode_fb_cmd2 *cmd);
 185 int tegra_drm_fb_prepare(struct drm_device *drm);
 186 void tegra_drm_fb_free(struct drm_device *drm);
 187 int tegra_drm_fb_init(struct drm_device *drm);
 188 void tegra_drm_fb_exit(struct drm_device *drm);
 189 void tegra_drm_fb_suspend(struct drm_device *drm);
 190 void tegra_drm_fb_resume(struct drm_device *drm);
 191
 192 extern struct platform_driver tegra_display_hub_driver;
 193 extern struct platform_driver tegra_dc_driver;
 194 extern struct platform_driver tegra_hdmi_driver;
 195 extern struct platform_driver tegra_dsi_driver;
 196 extern struct platform_driver tegra_dpaux_driver;
 197 extern struct platform_driver tegra_sor_driver;
 198 extern struct platform_driver tegra_gr2d_driver;
 199 extern struct platform_driver tegra_gr3d_driver;
 200 extern struct platform_driver tegra_vic_driver;
 201
 202 #endif /* HOST1X_DRM_H */