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/of_gpio.h>
 13
 14#include <drm/drm_atomic.h>
 15#include <drm/drm_edid.h>
 16#include <drm/drm_encoder.h>
 17#include <drm/drm_fb_helper.h>
 18#include <drm/drm_fixed.h>
 19#include <drm/drm_probe_helper.h>
 20#include <uapi/drm/tegra_drm.h>
 21
 22#include "gem.h"
 23#include "hub.h"
 24#include "trace.h"
 25
 26struct reset_control;
 27
 28#ifdef CONFIG_DRM_FBDEV_EMULATION
 29struct tegra_fbdev {
 30	struct drm_fb_helper base;
 31	struct drm_framebuffer *fb;
 32};
 33#endif
 34
 35struct tegra_drm {
 36	struct drm_device *drm;
 37
 38	struct iommu_domain *domain;
 39	struct iommu_group *group;
 40	struct mutex mm_lock;
 41	struct drm_mm mm;
 42
 43	struct {
 44		struct iova_domain domain;
 45		unsigned long shift;
 46		unsigned long limit;
 47	} carveout;
 48
 49	struct mutex clients_lock;
 50	struct list_head clients;
 51
 52#ifdef CONFIG_DRM_FBDEV_EMULATION
 53	struct tegra_fbdev *fbdev;
 54#endif
 55
 56	unsigned int pitch_align;
 57
 58	struct tegra_display_hub *hub;
 59};
 60
 61struct tegra_drm_client;
 62
 63struct tegra_drm_context {
 64	struct tegra_drm_client *client;
 65	struct host1x_channel *channel;
 66	unsigned int id;
 67};
 68
 69struct tegra_drm_client_ops {
 70	int (*open_channel)(struct tegra_drm_client *client,
 71			    struct tegra_drm_context *context);
 72	void (*close_channel)(struct tegra_drm_context *context);
 73	int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
 74	int (*is_valid_class)(u32 class);
 75	int (*submit)(struct tegra_drm_context *context,
 76		      struct drm_tegra_submit *args, struct drm_device *drm,
 77		      struct drm_file *file);
 78};
 79
 80int tegra_drm_submit(struct tegra_drm_context *context,
 81		     struct drm_tegra_submit *args, struct drm_device *drm,
 82		     struct drm_file *file);
 83
 84struct tegra_drm_client {
 85	struct host1x_client base;
 86	struct list_head list;
 87	struct tegra_drm *drm;
 88
 89	unsigned int version;
 90	const struct tegra_drm_client_ops *ops;
 91};
 92
 93static inline struct tegra_drm_client *
 94host1x_to_drm_client(struct host1x_client *client)
 95{
 96	return container_of(client, struct tegra_drm_client, base);
 97}
 98
 99int tegra_drm_register_client(struct tegra_drm *tegra,
100			      struct tegra_drm_client *client);
101int tegra_drm_unregister_client(struct tegra_drm *tegra,
102				struct tegra_drm_client *client);
103struct iommu_group *host1x_client_iommu_attach(struct host1x_client *client,
104					       bool shared);
105void host1x_client_iommu_detach(struct host1x_client *client,
106				struct iommu_group *group);
107
108int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
109int tegra_drm_exit(struct tegra_drm *tegra);
110
111void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
112void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
113		    dma_addr_t iova);
114
115struct cec_notifier;
116
117struct tegra_output {
118	struct device_node *of_node;
119	struct device *dev;
120
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
132static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
133{
134	return container_of(e, struct tegra_output, encoder);
135}
136
137static 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 */
143int tegra_output_probe(struct tegra_output *output);
144void tegra_output_remove(struct tegra_output *output);
145int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
146void tegra_output_exit(struct tegra_output *output);
147void tegra_output_find_possible_crtcs(struct tegra_output *output,
148				      struct drm_device *drm);
149
150int tegra_output_connector_get_modes(struct drm_connector *connector);
151enum drm_connector_status
152tegra_output_connector_detect(struct drm_connector *connector, bool force);
153void tegra_output_connector_destroy(struct drm_connector *connector);
154
155void tegra_output_encoder_destroy(struct drm_encoder *encoder);
156
157/* from dpaux.c */
158struct drm_dp_link;
159
160struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
161enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
162int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
163int drm_dp_aux_detach(struct drm_dp_aux *aux);
164int drm_dp_aux_enable(struct drm_dp_aux *aux);
165int drm_dp_aux_disable(struct drm_dp_aux *aux);
166int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
167int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
168		     u8 pattern);
169
170/* from fb.c */
171struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
172				    unsigned int index);
173bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
174int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
175			struct tegra_bo_tiling *tiling);
176struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
177					struct drm_file *file,
178					const struct drm_mode_fb_cmd2 *cmd);
179int tegra_drm_fb_prepare(struct drm_device *drm);
180void tegra_drm_fb_free(struct drm_device *drm);
181int tegra_drm_fb_init(struct drm_device *drm);
182void tegra_drm_fb_exit(struct drm_device *drm);
183
184extern struct platform_driver tegra_display_hub_driver;
185extern struct platform_driver tegra_dc_driver;
186extern struct platform_driver tegra_hdmi_driver;
187extern struct platform_driver tegra_dsi_driver;
188extern struct platform_driver tegra_dpaux_driver;
189extern struct platform_driver tegra_sor_driver;
190extern struct platform_driver tegra_gr2d_driver;
191extern struct platform_driver tegra_gr3d_driver;
192extern struct platform_driver tegra_vic_driver;
193
194#endif /* HOST1X_DRM_H */