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_crtc_helper.h>
  20 #include <drm/drm_edid.h>
  21 #include <drm/drm_encoder.h>
  22 #include <drm/drm_fb_helper.h>
  23 #include <drm/drm_fixed.h>
  24
  25 #include "gem.h"
  26 #include "trace.h"
  27
  28 struct reset_control;
  29
  30 struct tegra_fb {
  31         struct drm_framebuffer base;
  32         struct tegra_bo **planes;
  33         unsigned int num_planes;
  34 };
  35
  36 #ifdef CONFIG_DRM_FBDEV_EMULATION
  37 struct tegra_fbdev {
  38         struct drm_fb_helper base;
  39         struct tegra_fb *fb;
  40 };
  41 #endif
  42
  43 struct tegra_drm {
  44         struct drm_device *drm;
  45
  46         struct iommu_domain *domain;
  47         struct mutex mm_lock;
  48         struct drm_mm mm;
  49
  50         struct {
  51                 struct iova_domain domain;
  52                 unsigned long shift;
  53                 unsigned long limit;
  54         } carveout;
  55
  56         struct mutex clients_lock;
  57         struct list_head clients;
  58
  59 #ifdef CONFIG_DRM_FBDEV_EMULATION
  60         struct tegra_fbdev *fbdev;
  61 #endif
  62
  63         unsigned int pitch_align;
  64
  65         struct {
  66                 struct drm_atomic_state *state;
  67                 struct work_struct work;
  68                 struct mutex lock;
  69         } commit;
  70
  71         struct drm_atomic_state *state;
  72 };
  73
  74 struct tegra_drm_client;
  75
  76 struct tegra_drm_context {
  77         struct tegra_drm_client *client;
  78         struct host1x_channel *channel;
  79         unsigned int id;
  80 };
  81
  82 struct tegra_drm_client_ops {
  83         int (*open_channel)(struct tegra_drm_client *client,
  84                             struct tegra_drm_context *context);
  85         void (*close_channel)(struct tegra_drm_context *context);
  86         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  87         int (*is_valid_class)(u32 class);
  88         int (*submit)(struct tegra_drm_context *context,
  89                       struct drm_tegra_submit *args, struct drm_device *drm,
  90                       struct drm_file *file);
  91 };
  92
  93 int tegra_drm_submit(struct tegra_drm_context *context,
  94                      struct drm_tegra_submit *args, struct drm_device *drm,
  95                      struct drm_file *file);
  96
  97 struct tegra_drm_client {
  98         struct host1x_client base;
  99         struct list_head list;
 100
 101         const struct tegra_drm_client_ops *ops;
 102 };
 103
 104 static inline struct tegra_drm_client *
 105 host1x_to_drm_client(struct host1x_client *client)
 106 {
 107         return container_of(client, struct tegra_drm_client, base);
 108 }
 109
 110 int tegra_drm_register_client(struct tegra_drm *tegra,
 111                               struct tegra_drm_client *client);
 112 int tegra_drm_unregister_client(struct tegra_drm *tegra,
 113                                 struct tegra_drm_client *client);
 114
 115 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 116 int tegra_drm_exit(struct tegra_drm *tegra);
 117
 118 void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
 119 void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
 120                     dma_addr_t iova);
 121
 122 struct cec_notifier;
 123
 124 struct tegra_output {
 125         struct device_node *of_node;
 126         struct device *dev;
 127
 128         struct drm_panel *panel;
 129         struct i2c_adapter *ddc;
 130         const struct edid *edid;
 131         struct cec_notifier *notifier;
 132         unsigned int hpd_irq;
 133         int hpd_gpio;
 134         enum of_gpio_flags hpd_gpio_flags;
 135
 136         struct drm_encoder encoder;
 137         struct drm_connector connector;
 138 };
 139
 140 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 141 {
 142         return container_of(e, struct tegra_output, encoder);
 143 }
 144
 145 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 146 {
 147         return container_of(c, struct tegra_output, connector);
 148 }
 149
 150 /* from output.c */
 151 int tegra_output_probe(struct tegra_output *output);
 152 void tegra_output_remove(struct tegra_output *output);
 153 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 154 void tegra_output_exit(struct tegra_output *output);
 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 #ifdef CONFIG_DRM_FBDEV_EMULATION
 192 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
 193 void tegra_fb_output_poll_changed(struct drm_device *drm);
 194 #endif
 195
 196 extern struct platform_driver tegra_dc_driver;
 197 extern struct platform_driver tegra_hdmi_driver;
 198 extern struct platform_driver tegra_dsi_driver;
 199 extern struct platform_driver tegra_dpaux_driver;
 200 extern struct platform_driver tegra_sor_driver;
 201 extern struct platform_driver tegra_gr2d_driver;
 202 extern struct platform_driver tegra_gr3d_driver;
 203 extern struct platform_driver tegra_vic_driver;
 204
 205 #endif /* HOST1X_DRM_H */