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 <uapi/drm/tegra_drm.h> 11 #include <linux/host1x.h> 12 #include <linux/iova.h> 13 #include <linux/of_gpio.h> 14 15 #include <drm/drmP.h> 16 #include <drm/drm_atomic.h> 17 #include <drm/drm_edid.h> 18 #include <drm/drm_encoder.h> 19 #include <drm/drm_fb_helper.h> 20 #include <drm/drm_fixed.h> 21 #include <drm/drm_probe_helper.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 struct iommu_group *group; 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 struct iommu_group *host1x_client_iommu_attach(struct host1x_client *client, 105 bool shared); 106 void host1x_client_iommu_detach(struct host1x_client *client, 107 struct iommu_group *group); 108 109 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm); 110 int tegra_drm_exit(struct tegra_drm *tegra); 111 112 void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova); 113 void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt, 114 dma_addr_t iova); 115 116 struct cec_notifier; 117 118 struct tegra_output { 119 struct device_node *of_node; 120 struct device *dev; 121 122 struct drm_panel *panel; 123 struct i2c_adapter *ddc; 124 const struct edid *edid; 125 struct cec_notifier *cec; 126 unsigned int hpd_irq; 127 int hpd_gpio; 128 enum of_gpio_flags hpd_gpio_flags; 129 130 struct drm_encoder encoder; 131 struct drm_connector connector; 132 }; 133 134 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e) 135 { 136 return container_of(e, struct tegra_output, encoder); 137 } 138 139 static inline struct tegra_output *connector_to_output(struct drm_connector *c) 140 { 141 return container_of(c, struct tegra_output, connector); 142 } 143 144 /* from output.c */ 145 int tegra_output_probe(struct tegra_output *output); 146 void tegra_output_remove(struct tegra_output *output); 147 int tegra_output_init(struct drm_device *drm, struct tegra_output *output); 148 void tegra_output_exit(struct tegra_output *output); 149 void tegra_output_find_possible_crtcs(struct tegra_output *output, 150 struct drm_device *drm); 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 void tegra_output_encoder_destroy(struct drm_encoder *encoder); 158 159 /* from dpaux.c */ 160 struct drm_dp_link; 161 162 struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np); 163 enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux); 164 int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output); 165 int drm_dp_aux_detach(struct drm_dp_aux *aux); 166 int drm_dp_aux_enable(struct drm_dp_aux *aux); 167 int drm_dp_aux_disable(struct drm_dp_aux *aux); 168 int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding); 169 int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link, 170 u8 pattern); 171 172 /* from fb.c */ 173 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer, 174 unsigned int index); 175 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer); 176 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer, 177 struct tegra_bo_tiling *tiling); 178 struct drm_framebuffer *tegra_fb_create(struct drm_device *drm, 179 struct drm_file *file, 180 const struct drm_mode_fb_cmd2 *cmd); 181 int tegra_drm_fb_prepare(struct drm_device *drm); 182 void tegra_drm_fb_free(struct drm_device *drm); 183 int tegra_drm_fb_init(struct drm_device *drm); 184 void tegra_drm_fb_exit(struct drm_device *drm); 185 186 extern struct platform_driver tegra_display_hub_driver; 187 extern struct platform_driver tegra_dc_driver; 188 extern struct platform_driver tegra_hdmi_driver; 189 extern struct platform_driver tegra_dsi_driver; 190 extern struct platform_driver tegra_dpaux_driver; 191 extern struct platform_driver tegra_sor_driver; 192 extern struct platform_driver tegra_gr2d_driver; 193 extern struct platform_driver tegra_gr3d_driver; 194 extern struct platform_driver tegra_vic_driver; 195 196 #endif /* HOST1X_DRM_H */ 197