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_encoder.h>
17#include <drm/drm_fixed.h>
18#include <drm/drm_probe_helper.h>
19#include <uapi/drm/tegra_drm.h>
20
21#include "gem.h"
22#include "hub.h"
23#include "trace.h"
24
25/* XXX move to include/uapi/drm/drm_fourcc.h? */
26#define DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT BIT_ULL(22)
27
28struct edid;
29struct reset_control;
30
31struct tegra_drm {
32	struct drm_device *drm;
33
34	struct iommu_domain *domain;
35	bool use_explicit_iommu;
36	struct mutex mm_lock;
37	struct drm_mm mm;
38
39	struct {
40		struct iova_domain domain;
41		unsigned long shift;
42		unsigned long limit;
43	} carveout;
44
45	struct mutex clients_lock;
46	struct list_head clients;
47
48	unsigned int hmask, vmask;
49	unsigned int pitch_align;
50	unsigned int num_crtcs;
51
52	struct tegra_display_hub *hub;
53};
54
55static inline struct host1x *tegra_drm_to_host1x(struct tegra_drm *tegra)
56{
57	return dev_get_drvdata(tegra->drm->dev->parent);
58}
59
60struct tegra_drm_client;
61
62struct tegra_drm_context {
63	struct tegra_drm_client *client;
64	struct host1x_channel *channel;
65
66	/* Only used by legacy UAPI. */
67	unsigned int id;
68
69	/* Only used by new UAPI. */
70	struct xarray mappings;
71	struct host1x_memory_context *memory_context;
72};
73
74struct tegra_drm_client_ops {
75	int (*open_channel)(struct tegra_drm_client *client,
76			    struct tegra_drm_context *context);
77	void (*close_channel)(struct tegra_drm_context *context);
78	int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
79	int (*is_valid_class)(u32 class);
80	int (*submit)(struct tegra_drm_context *context,
81		      struct drm_tegra_submit *args, struct drm_device *drm,
82		      struct drm_file *file);
83	int (*get_streamid_offset)(struct tegra_drm_client *client, u32 *offset);
84	int (*can_use_memory_ctx)(struct tegra_drm_client *client, bool *supported);
85};
86
87int tegra_drm_submit(struct tegra_drm_context *context,
88		     struct drm_tegra_submit *args, struct drm_device *drm,
89		     struct drm_file *file);
90
91static inline int
92tegra_drm_get_streamid_offset_thi(struct tegra_drm_client *client, u32 *offset)
93{
94	*offset = 0x30;
95
96	return 0;
97}
98
99struct tegra_drm_client {
100	struct host1x_client base;
101	struct list_head list;
102	struct tegra_drm *drm;
103	struct host1x_channel *shared_channel;
104
105	/* Set by driver */
106	unsigned int version;
107	const struct tegra_drm_client_ops *ops;
108};
109
110static inline struct tegra_drm_client *
111host1x_to_drm_client(struct host1x_client *client)
112{
113	return container_of(client, struct tegra_drm_client, base);
114}
115
116int tegra_drm_register_client(struct tegra_drm *tegra,
117			      struct tegra_drm_client *client);
118int tegra_drm_unregister_client(struct tegra_drm *tegra,
119				struct tegra_drm_client *client);
120int host1x_client_iommu_attach(struct host1x_client *client);
121void host1x_client_iommu_detach(struct host1x_client *client);
122
123void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
124void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
125		    dma_addr_t iova);
126
127struct cec_notifier;
128
129struct tegra_output {
130	struct device_node *of_node;
131	struct device *dev;
132
133	struct drm_bridge *bridge;
134	struct drm_panel *panel;
135	struct i2c_adapter *ddc;
136	const struct edid *edid;
137	struct cec_notifier *cec;
138	unsigned int hpd_irq;
139	struct gpio_desc *hpd_gpio;
140
141	struct drm_encoder encoder;
142	struct drm_connector connector;
143};
144
145static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
146{
147	return container_of(e, struct tegra_output, encoder);
148}
149
150static inline struct tegra_output *connector_to_output(struct drm_connector *c)
151{
152	return container_of(c, struct tegra_output, connector);
153}
154
155/* from output.c */
156int tegra_output_probe(struct tegra_output *output);
157void tegra_output_remove(struct tegra_output *output);
158int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
159void tegra_output_exit(struct tegra_output *output);
160void tegra_output_find_possible_crtcs(struct tegra_output *output,
161				      struct drm_device *drm);
162int tegra_output_suspend(struct tegra_output *output);
163int tegra_output_resume(struct tegra_output *output);
164
165int tegra_output_connector_get_modes(struct drm_connector *connector);
166enum drm_connector_status
167tegra_output_connector_detect(struct drm_connector *connector, bool force);
168void tegra_output_connector_destroy(struct drm_connector *connector);
169
170/* from dpaux.c */
171struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
172enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
173int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
174int drm_dp_aux_detach(struct drm_dp_aux *aux);
175int drm_dp_aux_enable(struct drm_dp_aux *aux);
176int drm_dp_aux_disable(struct drm_dp_aux *aux);
177
178/* from fb.c */
179struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
180				    unsigned int index);
181bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
182int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
183			struct tegra_bo_tiling *tiling);
184struct drm_framebuffer *tegra_fb_alloc(struct drm_device *drm,
185				       const struct drm_mode_fb_cmd2 *mode_cmd,
186				       struct tegra_bo **planes,
187				       unsigned int num_planes);
188struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
189					struct drm_file *file,
190					const struct drm_mode_fb_cmd2 *cmd);
191
192#ifdef CONFIG_DRM_FBDEV_EMULATION
193void tegra_fbdev_setup(struct drm_device *drm);
194#else
195static inline void tegra_fbdev_setup(struct drm_device *drm)
196{ }
197#endif
198
199extern struct platform_driver tegra_display_hub_driver;
200extern struct platform_driver tegra_dc_driver;
201extern struct platform_driver tegra_hdmi_driver;
202extern struct platform_driver tegra_dsi_driver;
203extern struct platform_driver tegra_dpaux_driver;
204extern struct platform_driver tegra_sor_driver;
205extern struct platform_driver tegra_gr2d_driver;
206extern struct platform_driver tegra_gr3d_driver;
207extern struct platform_driver tegra_vic_driver;
208extern struct platform_driver tegra_nvdec_driver;
209
210#endif /* HOST1X_DRM_H */
211