drivers/gpu/drm/tegra/drm.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2012 Avionic Design GmbH
   4  * Copyright (C) 2012-2013 NVIDIA CORPORATION.  All rights reserved.
   5  */
   6
   7 #ifndef HOST1X_DRM_H
   8 #define HOST1X_DRM_H 1
   9
  10 #include <linux/host1x.h>
  11 #include <linux/iova.h>
  12 #include <linux/gpio/consumer.h>
  13
  14 #include <drm/drm_atomic.h>
  15 #include <drm/drm_bridge.h>
  16 #include <drm/drm_edid.h>
  17 #include <drm/drm_encoder.h>
  18 #include <drm/drm_fb_helper.h>
  19 #include <drm/drm_fixed.h>
  20 #include <drm/drm_probe_helper.h>
  21 #include <uapi/drm/tegra_drm.h>
  22
  23 #include "gem.h"
  24 #include "hub.h"
  25 #include "trace.h"
  26
  27 struct reset_control;
  28
  29 #ifdef CONFIG_DRM_FBDEV_EMULATION
  30 struct tegra_fbdev {
  31         struct drm_fb_helper base;
  32         struct drm_framebuffer *fb;
  33 };
  34 #endif
  35
  36 struct tegra_drm {
  37         struct drm_device *drm;
  38
  39         struct iommu_domain *domain;
  40         bool use_explicit_iommu;
  41         struct mutex mm_lock;
  42         struct drm_mm mm;
  43
  44         struct {
  45                 struct iova_domain domain;
  46                 unsigned long shift;
  47                 unsigned long limit;
  48         } carveout;
  49
  50         struct mutex clients_lock;
  51         struct list_head clients;
  52
  53 #ifdef CONFIG_DRM_FBDEV_EMULATION
  54         struct tegra_fbdev *fbdev;
  55 #endif
  56
  57         unsigned int pitch_align;
  58
  59         struct tegra_display_hub *hub;
  60 };
  61
  62 struct tegra_drm_client;
  63
  64 struct tegra_drm_context {
  65         struct tegra_drm_client *client;
  66         struct host1x_channel *channel;
  67         unsigned int id;
  68 };
  69
  70 struct tegra_drm_client_ops {
  71         int (*open_channel)(struct tegra_drm_client *client,
  72                             struct tegra_drm_context *context);
  73         void (*close_channel)(struct tegra_drm_context *context);
  74         int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
  75         int (*is_valid_class)(u32 class);
  76         int (*submit)(struct tegra_drm_context *context,
  77                       struct drm_tegra_submit *args, struct drm_device *drm,
  78                       struct drm_file *file);
  79 };
  80
  81 int tegra_drm_submit(struct tegra_drm_context *context,
  82                      struct drm_tegra_submit *args, struct drm_device *drm,
  83                      struct drm_file *file);
  84
  85 struct tegra_drm_client {
  86         struct host1x_client base;
  87         struct list_head list;
  88         struct tegra_drm *drm;
  89
  90         unsigned int version;
  91         const struct tegra_drm_client_ops *ops;
  92 };
  93
  94 static inline struct tegra_drm_client *
  95 host1x_to_drm_client(struct host1x_client *client)
  96 {
  97         return container_of(client, struct tegra_drm_client, base);
  98 }
  99
 100 int tegra_drm_register_client(struct tegra_drm *tegra,
 101                               struct tegra_drm_client *client);
 102 int tegra_drm_unregister_client(struct tegra_drm *tegra,
 103                                 struct tegra_drm_client *client);
 104 int host1x_client_iommu_attach(struct host1x_client *client);
 105 void host1x_client_iommu_detach(struct host1x_client *client);
 106
 107 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 108 int tegra_drm_exit(struct tegra_drm *tegra);
 109
 110 void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
 111 void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
 112                     dma_addr_t iova);
 113
 114 struct cec_notifier;
 115
 116 struct tegra_output {
 117         struct device_node *of_node;
 118         struct device *dev;
 119
 120         struct drm_bridge *bridge;
 121         struct drm_panel *panel;
 122         struct i2c_adapter *ddc;
 123         const struct edid *edid;
 124         struct cec_notifier *cec;
 125         unsigned int hpd_irq;
 126         struct gpio_desc *hpd_gpio;
 127
 128         struct drm_encoder encoder;
 129         struct drm_connector connector;
 130 };
 131
 132 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
 133 {
 134         return container_of(e, struct tegra_output, encoder);
 135 }
 136
 137 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
 138 {
 139         return container_of(c, struct tegra_output, connector);
 140 }
 141
 142 /* from output.c */
 143 int tegra_output_probe(struct tegra_output *output);
 144 void tegra_output_remove(struct tegra_output *output);
 145 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 146 void tegra_output_exit(struct tegra_output *output);
 147 void tegra_output_find_possible_crtcs(struct tegra_output *output,
 148                                       struct drm_device *drm);
 149 int tegra_output_suspend(struct tegra_output *output);
 150 int tegra_output_resume(struct tegra_output *output);
 151
 152 int tegra_output_connector_get_modes(struct drm_connector *connector);
 153 enum drm_connector_status
 154 tegra_output_connector_detect(struct drm_connector *connector, bool force);
 155 void tegra_output_connector_destroy(struct drm_connector *connector);
 156
 157 /* from dpaux.c */
 158 struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
 159 enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
 160 int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
 161 int drm_dp_aux_detach(struct drm_dp_aux *aux);
 162 int drm_dp_aux_enable(struct drm_dp_aux *aux);
 163 int drm_dp_aux_disable(struct drm_dp_aux *aux);
 164
 165 /* from fb.c */
 166 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
 167                                     unsigned int index);
 168 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
 169 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 170                         struct tegra_bo_tiling *tiling);
 171 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
 172                                         struct drm_file *file,
 173                                         const struct drm_mode_fb_cmd2 *cmd);
 174 int tegra_drm_fb_prepare(struct drm_device *drm);
 175 void tegra_drm_fb_free(struct drm_device *drm);
 176 int tegra_drm_fb_init(struct drm_device *drm);
 177 void tegra_drm_fb_exit(struct drm_device *drm);
 178
 179 extern struct platform_driver tegra_display_hub_driver;
 180 extern struct platform_driver tegra_dc_driver;
 181 extern struct platform_driver tegra_hdmi_driver;
 182 extern struct platform_driver tegra_dsi_driver;
 183 extern struct platform_driver tegra_dpaux_driver;
 184 extern struct platform_driver tegra_sor_driver;
 185 extern struct platform_driver tegra_gr2d_driver;
 186 extern struct platform_driver tegra_gr3d_driver;
 187 extern struct platform_driver tegra_vic_driver;
 188
 189 #endif /* HOST1X_DRM_H */