1/*
  2 * Copyright (C) 2012 Avionic Design GmbH
  3 * Copyright (C) 2012-2013 NVIDIA CORPORATION.  All rights reserved.
  4 *
  5 * This program is free software; you can redistribute it and/or modify
  6 * it under the terms of the GNU General Public License version 2 as
  7 * published by the Free Software Foundation.
  8 */
  9
 10#ifndef HOST1X_DRM_H
 11#define HOST1X_DRM_H 1
 12
 13#include <uapi/drm/tegra_drm.h>
 14#include <linux/host1x.h>
 15#include <linux/iova.h>
 16#include <linux/of_gpio.h>
 17
 18#include <drm/drmP.h>
 19#include <drm/drm_atomic.h>
 20#include <drm/drm_crtc_helper.h>
 21#include <drm/drm_edid.h>
 22#include <drm/drm_encoder.h>
 23#include <drm/drm_fb_helper.h>
 24#include <drm/drm_fixed.h>
 25
 26#include "gem.h"
 27#include "hub.h"
 28#include "trace.h"
 29
 30struct reset_control;
 31
 32struct tegra_fb {
 33	struct drm_framebuffer base;
 34	struct tegra_bo **planes;
 35	unsigned int num_planes;
 36};
 37
 38#ifdef CONFIG_DRM_FBDEV_EMULATION
 39struct tegra_fbdev {
 40	struct drm_fb_helper base;
 41	struct tegra_fb *fb;
 42};
 43#endif
 44
 45struct tegra_drm {
 46	struct drm_device *drm;
 47
 48	struct iommu_domain *domain;
 49	struct iommu_group *group;
 50	struct mutex mm_lock;
 51	struct drm_mm mm;
 52
 53	struct {
 54		struct iova_domain domain;
 55		unsigned long shift;
 56		unsigned long limit;
 57	} carveout;
 58
 59	struct mutex clients_lock;
 60	struct list_head clients;
 61
 62#ifdef CONFIG_DRM_FBDEV_EMULATION
 63	struct tegra_fbdev *fbdev;
 64#endif
 65
 66	unsigned int pitch_align;
 67
 68	struct tegra_display_hub *hub;
 69
 70	struct drm_atomic_state *state;
 71};
 72
 73struct tegra_drm_client;
 74
 75struct tegra_drm_context {
 76	struct tegra_drm_client *client;
 77	struct host1x_channel *channel;
 78	unsigned int id;
 79};
 80
 81struct tegra_drm_client_ops {
 82	int (*open_channel)(struct tegra_drm_client *client,
 83			    struct tegra_drm_context *context);
 84	void (*close_channel)(struct tegra_drm_context *context);
 85	int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
 86	int (*is_valid_class)(u32 class);
 87	int (*submit)(struct tegra_drm_context *context,
 88		      struct drm_tegra_submit *args, struct drm_device *drm,
 89		      struct drm_file *file);
 90};
 91
 92int tegra_drm_submit(struct tegra_drm_context *context,
 93		     struct drm_tegra_submit *args, struct drm_device *drm,
 94		     struct drm_file *file);
 95
 96struct tegra_drm_client {
 97	struct host1x_client base;
 98	struct list_head list;
 99
100	const struct tegra_drm_client_ops *ops;
101};
102
103static inline struct tegra_drm_client *
104host1x_to_drm_client(struct host1x_client *client)
105{
106	return container_of(client, struct tegra_drm_client, base);
107}
108
109int tegra_drm_register_client(struct tegra_drm *tegra,
110			      struct tegra_drm_client *client);
111int tegra_drm_unregister_client(struct tegra_drm *tegra,
112				struct tegra_drm_client *client);
113
114int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
115int tegra_drm_exit(struct tegra_drm *tegra);
116
117void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *iova);
118void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
119		    dma_addr_t iova);
120
121struct cec_notifier;
122
123struct tegra_output {
124	struct device_node *of_node;
125	struct device *dev;
126
127	struct drm_panel *panel;
128	struct i2c_adapter *ddc;
129	const struct edid *edid;
130	struct cec_notifier *notifier;
131	unsigned int hpd_irq;
132	int hpd_gpio;
133	enum of_gpio_flags hpd_gpio_flags;
134
135	struct drm_encoder encoder;
136	struct drm_connector connector;
137};
138
139static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
140{
141	return container_of(e, struct tegra_output, encoder);
142}
143
144static inline struct tegra_output *connector_to_output(struct drm_connector *c)
145{
146	return container_of(c, struct tegra_output, connector);
147}
148
149/* from output.c */
150int tegra_output_probe(struct tegra_output *output);
151void tegra_output_remove(struct tegra_output *output);
152int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
153void tegra_output_exit(struct tegra_output *output);
154void tegra_output_find_possible_crtcs(struct tegra_output *output,
155				      struct drm_device *drm);
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
162void tegra_output_encoder_destroy(struct drm_encoder *encoder);
163
164/* from dpaux.c */
165struct drm_dp_link;
166
167struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
168enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
169int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
170int drm_dp_aux_detach(struct drm_dp_aux *aux);
171int drm_dp_aux_enable(struct drm_dp_aux *aux);
172int drm_dp_aux_disable(struct drm_dp_aux *aux);
173int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
174int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
175		     u8 pattern);
176
177/* from fb.c */
178struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
179				    unsigned int index);
180bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
181int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
182			struct tegra_bo_tiling *tiling);
183struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
184					struct drm_file *file,
185					const struct drm_mode_fb_cmd2 *cmd);
186int tegra_drm_fb_prepare(struct drm_device *drm);
187void tegra_drm_fb_free(struct drm_device *drm);
188int tegra_drm_fb_init(struct drm_device *drm);
189void tegra_drm_fb_exit(struct drm_device *drm);
190void tegra_drm_fb_suspend(struct drm_device *drm);
191void tegra_drm_fb_resume(struct drm_device *drm);
192
193extern struct platform_driver tegra_display_hub_driver;
194extern struct platform_driver tegra_dc_driver;
195extern struct platform_driver tegra_hdmi_driver;
196extern struct platform_driver tegra_dsi_driver;
197extern struct platform_driver tegra_dpaux_driver;
198extern struct platform_driver tegra_sor_driver;
199extern struct platform_driver tegra_gr2d_driver;
200extern struct platform_driver tegra_gr3d_driver;
201extern struct platform_driver tegra_vic_driver;
202
203#endif /* HOST1X_DRM_H */