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 /* XXX move to include/uapi/drm/drm_fourcc.h? */ 28 #define DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT BIT_ULL(22) 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 bool use_explicit_iommu; 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 hmask, vmask; 61 unsigned int pitch_align; 62 unsigned int num_crtcs; 63 64 struct tegra_display_hub *hub; 65 }; 66 67 static inline struct host1x *tegra_drm_to_host1x(struct tegra_drm *tegra) 68 { 69 return dev_get_drvdata(tegra->drm->dev->parent); 70 } 71 72 struct tegra_drm_client; 73 74 struct tegra_drm_context { 75 struct tegra_drm_client *client; 76 struct host1x_channel *channel; 77 78 /* Only used by legacy UAPI. */ 79 unsigned int id; 80 81 /* Only used by new UAPI. */ 82 struct xarray mappings; 83 }; 84 85 struct tegra_drm_client_ops { 86 int (*open_channel)(struct tegra_drm_client *client, 87 struct tegra_drm_context *context); 88 void (*close_channel)(struct tegra_drm_context *context); 89 int (*is_addr_reg)(struct device *dev, u32 class, u32 offset); 90 int (*is_valid_class)(u32 class); 91 int (*submit)(struct tegra_drm_context *context, 92 struct drm_tegra_submit *args, struct drm_device *drm, 93 struct drm_file *file); 94 }; 95 96 int tegra_drm_submit(struct tegra_drm_context *context, 97 struct drm_tegra_submit *args, struct drm_device *drm, 98 struct drm_file *file); 99 100 struct tegra_drm_client { 101 struct host1x_client base; 102 struct list_head list; 103 struct tegra_drm *drm; 104 struct host1x_channel *shared_channel; 105 106 /* Set by driver */ 107 unsigned int version; 108 const struct tegra_drm_client_ops *ops; 109 }; 110 111 static inline struct tegra_drm_client * 112 host1x_to_drm_client(struct host1x_client *client) 113 { 114 return container_of(client, struct tegra_drm_client, base); 115 } 116 117 int tegra_drm_register_client(struct tegra_drm *tegra, 118 struct tegra_drm_client *client); 119 int tegra_drm_unregister_client(struct tegra_drm *tegra, 120 struct tegra_drm_client *client); 121 int host1x_client_iommu_attach(struct host1x_client *client); 122 void host1x_client_iommu_detach(struct host1x_client *client); 123 124 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm); 125 int tegra_drm_exit(struct tegra_drm *tegra); 126 127 void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova); 128 void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt, 129 dma_addr_t iova); 130 131 struct cec_notifier; 132 133 struct tegra_output { 134 struct device_node *of_node; 135 struct device *dev; 136 137 struct drm_bridge *bridge; 138 struct drm_panel *panel; 139 struct i2c_adapter *ddc; 140 const struct edid *edid; 141 struct cec_notifier *cec; 142 unsigned int hpd_irq; 143 struct gpio_desc *hpd_gpio; 144 145 struct drm_encoder encoder; 146 struct drm_connector connector; 147 }; 148 149 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e) 150 { 151 return container_of(e, struct tegra_output, encoder); 152 } 153 154 static inline struct tegra_output *connector_to_output(struct drm_connector *c) 155 { 156 return container_of(c, struct tegra_output, connector); 157 } 158 159 /* from output.c */ 160 int tegra_output_probe(struct tegra_output *output); 161 void tegra_output_remove(struct tegra_output *output); 162 int tegra_output_init(struct drm_device *drm, struct tegra_output *output); 163 void tegra_output_exit(struct tegra_output *output); 164 void tegra_output_find_possible_crtcs(struct tegra_output *output, 165 struct drm_device *drm); 166 int tegra_output_suspend(struct tegra_output *output); 167 int tegra_output_resume(struct tegra_output *output); 168 169 int tegra_output_connector_get_modes(struct drm_connector *connector); 170 enum drm_connector_status 171 tegra_output_connector_detect(struct drm_connector *connector, bool force); 172 void tegra_output_connector_destroy(struct drm_connector *connector); 173 174 /* from dpaux.c */ 175 struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np); 176 enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux); 177 int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output); 178 int drm_dp_aux_detach(struct drm_dp_aux *aux); 179 int drm_dp_aux_enable(struct drm_dp_aux *aux); 180 int drm_dp_aux_disable(struct drm_dp_aux *aux); 181 182 /* from fb.c */ 183 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer, 184 unsigned int index); 185 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer); 186 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer, 187 struct tegra_bo_tiling *tiling); 188 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm, 189 struct drm_file *file, 190 const struct drm_mode_fb_cmd2 *cmd); 191 int tegra_drm_fb_prepare(struct drm_device *drm); 192 void tegra_drm_fb_free(struct drm_device *drm); 193 int tegra_drm_fb_init(struct drm_device *drm); 194 void tegra_drm_fb_exit(struct drm_device *drm); 195 196 extern struct platform_driver tegra_display_hub_driver; 197 extern struct platform_driver tegra_dc_driver; 198 extern struct platform_driver tegra_hdmi_driver; 199 extern struct platform_driver tegra_dsi_driver; 200 extern struct platform_driver tegra_dpaux_driver; 201 extern struct platform_driver tegra_sor_driver; 202 extern struct platform_driver tegra_gr2d_driver; 203 extern struct platform_driver tegra_gr3d_driver; 204 extern struct platform_driver tegra_vic_driver; 205 206 #endif /* HOST1X_DRM_H */ 207