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
 30struct reset_control;
 31
 32#ifdef CONFIG_DRM_FBDEV_EMULATION
 33struct tegra_fbdev {
 34	struct drm_fb_helper base;
 35	struct drm_framebuffer *fb;
 36};
 37#endif
 38
 39struct 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
 67struct tegra_drm_client;
 68
 69struct tegra_drm_context {
 70	struct tegra_drm_client *client;
 71	struct host1x_channel *channel;
 72	unsigned int id;
 73};
 74
 75struct tegra_drm_client_ops {
 76	int (*open_channel)(struct tegra_drm_client *client,
 77			    struct tegra_drm_context *context);
 78	void (*close_channel)(struct tegra_drm_context *context);
 79	int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
 80	int (*is_valid_class)(u32 class);
 81	int (*submit)(struct tegra_drm_context *context,
 82		      struct drm_tegra_submit *args, struct drm_device *drm,
 83		      struct drm_file *file);
 84};
 85
 86int tegra_drm_submit(struct tegra_drm_context *context,
 87		     struct drm_tegra_submit *args, struct drm_device *drm,
 88		     struct drm_file *file);
 89
 90struct tegra_drm_client {
 91	struct host1x_client base;
 92	struct list_head list;
 93	struct tegra_drm *drm;
 94
 95	unsigned int version;
 96	const struct tegra_drm_client_ops *ops;
 97};
 98
 99static inline struct tegra_drm_client *
100host1x_to_drm_client(struct host1x_client *client)
101{
102	return container_of(client, struct tegra_drm_client, base);
103}
104
105int tegra_drm_register_client(struct tegra_drm *tegra,
106			      struct tegra_drm_client *client);
107int tegra_drm_unregister_client(struct tegra_drm *tegra,
108				struct tegra_drm_client *client);
109int host1x_client_iommu_attach(struct host1x_client *client);
110void host1x_client_iommu_detach(struct host1x_client *client);
111
112int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
113int tegra_drm_exit(struct tegra_drm *tegra);
114
115void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
116void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
117		    dma_addr_t iova);
118
119struct cec_notifier;
120
121struct tegra_output {
122	struct device_node *of_node;
123	struct device *dev;
124
125	struct drm_bridge *bridge;
126	struct drm_panel *panel;
127	struct i2c_adapter *ddc;
128	const struct edid *edid;
129	struct cec_notifier *cec;
130	unsigned int hpd_irq;
131	struct gpio_desc *hpd_gpio;
132
133	struct drm_encoder encoder;
134	struct drm_connector connector;
135};
136
137static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
138{
139	return container_of(e, struct tegra_output, encoder);
140}
141
142static inline struct tegra_output *connector_to_output(struct drm_connector *c)
143{
144	return container_of(c, struct tegra_output, connector);
145}
146
147/* from output.c */
148int tegra_output_probe(struct tegra_output *output);
149void tegra_output_remove(struct tegra_output *output);
150int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
151void tegra_output_exit(struct tegra_output *output);
152void tegra_output_find_possible_crtcs(struct tegra_output *output,
153				      struct drm_device *drm);
154int tegra_output_suspend(struct tegra_output *output);
155int tegra_output_resume(struct tegra_output *output);
156
157int tegra_output_connector_get_modes(struct drm_connector *connector);
158enum drm_connector_status
159tegra_output_connector_detect(struct drm_connector *connector, bool force);
160void tegra_output_connector_destroy(struct drm_connector *connector);
161
162/* from dpaux.c */
163struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
164enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
165int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
166int drm_dp_aux_detach(struct drm_dp_aux *aux);
167int drm_dp_aux_enable(struct drm_dp_aux *aux);
168int drm_dp_aux_disable(struct drm_dp_aux *aux);
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 */