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
 67static inline struct host1x *tegra_drm_to_host1x(struct tegra_drm *tegra)
 68{
 69	return dev_get_drvdata(tegra->drm->dev->parent);
 70}
 71
 72struct tegra_drm_client;
 73
 74struct 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	struct host1x_memory_context *memory_context;
 84};
 85
 86struct tegra_drm_client_ops {
 87	int (*open_channel)(struct tegra_drm_client *client,
 88			    struct tegra_drm_context *context);
 89	void (*close_channel)(struct tegra_drm_context *context);
 90	int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
 91	int (*is_valid_class)(u32 class);
 92	int (*submit)(struct tegra_drm_context *context,
 93		      struct drm_tegra_submit *args, struct drm_device *drm,
 94		      struct drm_file *file);
 95	int (*get_streamid_offset)(struct tegra_drm_client *client, u32 *offset);
 96	int (*can_use_memory_ctx)(struct tegra_drm_client *client, bool *supported);
 97};
 98
 99int tegra_drm_submit(struct tegra_drm_context *context,
100		     struct drm_tegra_submit *args, struct drm_device *drm,
101		     struct drm_file *file);
102
103static inline int
104tegra_drm_get_streamid_offset_thi(struct tegra_drm_client *client, u32 *offset)
105{
106	*offset = 0x30;
107
108	return 0;
109}
110
111struct tegra_drm_client {
112	struct host1x_client base;
113	struct list_head list;
114	struct tegra_drm *drm;
115	struct host1x_channel *shared_channel;
116
117	/* Set by driver */
118	unsigned int version;
119	const struct tegra_drm_client_ops *ops;
120};
121
122static inline struct tegra_drm_client *
123host1x_to_drm_client(struct host1x_client *client)
124{
125	return container_of(client, struct tegra_drm_client, base);
126}
127
128int tegra_drm_register_client(struct tegra_drm *tegra,
129			      struct tegra_drm_client *client);
130int tegra_drm_unregister_client(struct tegra_drm *tegra,
131				struct tegra_drm_client *client);
132int host1x_client_iommu_attach(struct host1x_client *client);
133void host1x_client_iommu_detach(struct host1x_client *client);
134
135int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
136int tegra_drm_exit(struct tegra_drm *tegra);
137
138void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
139void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
140		    dma_addr_t iova);
141
142struct cec_notifier;
143
144struct tegra_output {
145	struct device_node *of_node;
146	struct device *dev;
147
148	struct drm_bridge *bridge;
149	struct drm_panel *panel;
150	struct i2c_adapter *ddc;
151	const struct edid *edid;
152	struct cec_notifier *cec;
153	unsigned int hpd_irq;
154	struct gpio_desc *hpd_gpio;
155
156	struct drm_encoder encoder;
157	struct drm_connector connector;
158};
159
160static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
161{
162	return container_of(e, struct tegra_output, encoder);
163}
164
165static inline struct tegra_output *connector_to_output(struct drm_connector *c)
166{
167	return container_of(c, struct tegra_output, connector);
168}
169
170/* from output.c */
171int tegra_output_probe(struct tegra_output *output);
172void tegra_output_remove(struct tegra_output *output);
173int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
174void tegra_output_exit(struct tegra_output *output);
175void tegra_output_find_possible_crtcs(struct tegra_output *output,
176				      struct drm_device *drm);
177int tegra_output_suspend(struct tegra_output *output);
178int tegra_output_resume(struct tegra_output *output);
179
180int tegra_output_connector_get_modes(struct drm_connector *connector);
181enum drm_connector_status
182tegra_output_connector_detect(struct drm_connector *connector, bool force);
183void tegra_output_connector_destroy(struct drm_connector *connector);
184
185/* from dpaux.c */
186struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
187enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
188int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
189int drm_dp_aux_detach(struct drm_dp_aux *aux);
190int drm_dp_aux_enable(struct drm_dp_aux *aux);
191int drm_dp_aux_disable(struct drm_dp_aux *aux);
192
193/* from fb.c */
194struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
195				    unsigned int index);
196bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
197int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
198			struct tegra_bo_tiling *tiling);
199struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
200					struct drm_file *file,
201					const struct drm_mode_fb_cmd2 *cmd);
202int tegra_drm_fb_prepare(struct drm_device *drm);
203void tegra_drm_fb_free(struct drm_device *drm);
204int tegra_drm_fb_init(struct drm_device *drm);
205void tegra_drm_fb_exit(struct drm_device *drm);
206
207extern struct platform_driver tegra_display_hub_driver;
208extern struct platform_driver tegra_dc_driver;
209extern struct platform_driver tegra_hdmi_driver;
210extern struct platform_driver tegra_dsi_driver;
211extern struct platform_driver tegra_dpaux_driver;
212extern struct platform_driver tegra_sor_driver;
213extern struct platform_driver tegra_gr2d_driver;
214extern struct platform_driver tegra_gr3d_driver;
215extern struct platform_driver tegra_vic_driver;
216extern struct platform_driver tegra_nvdec_driver;
217
218#endif /* HOST1X_DRM_H */