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/of_gpio.h>
 16
 17#include <drm/drmP.h>
 18#include <drm/drm_crtc_helper.h>
 19#include <drm/drm_edid.h>
 20#include <drm/drm_fb_helper.h>
 21#include <drm/drm_fixed.h>
 22
 23#include "gem.h"
 24
 25struct reset_control;
 26
 27struct tegra_fb {
 28	struct drm_framebuffer base;
 29	struct tegra_bo **planes;
 30	unsigned int num_planes;
 31};
 32
 33#ifdef CONFIG_DRM_FBDEV_EMULATION
 34struct tegra_fbdev {
 35	struct drm_fb_helper base;
 36	struct tegra_fb *fb;
 37};
 38#endif
 39
 40struct tegra_drm {
 41	struct drm_device *drm;
 42
 43	struct iommu_domain *domain;
 44	struct drm_mm mm;
 45
 46	struct mutex clients_lock;
 47	struct list_head clients;
 48
 49#ifdef CONFIG_DRM_FBDEV_EMULATION
 50	struct tegra_fbdev *fbdev;
 51#endif
 52
 53	unsigned int pitch_align;
 54
 55	struct {
 56		struct drm_atomic_state *state;
 57		struct work_struct work;
 58		struct mutex lock;
 59	} commit;
 60
 61	struct drm_atomic_state *state;
 62};
 63
 64struct tegra_drm_client;
 65
 66struct tegra_drm_context {
 67	struct tegra_drm_client *client;
 68	struct host1x_channel *channel;
 69	struct list_head list;
 70};
 71
 72struct tegra_drm_client_ops {
 73	int (*open_channel)(struct tegra_drm_client *client,
 74			    struct tegra_drm_context *context);
 75	void (*close_channel)(struct tegra_drm_context *context);
 76	int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
 77	int (*submit)(struct tegra_drm_context *context,
 78		      struct drm_tegra_submit *args, struct drm_device *drm,
 79		      struct drm_file *file);
 80};
 81
 82int tegra_drm_submit(struct tegra_drm_context *context,
 83		     struct drm_tegra_submit *args, struct drm_device *drm,
 84		     struct drm_file *file);
 85
 86struct tegra_drm_client {
 87	struct host1x_client base;
 88	struct list_head list;
 89
 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);
103
104int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
105int tegra_drm_exit(struct tegra_drm *tegra);
106
107struct tegra_dc_soc_info;
108struct tegra_output;
109
110struct tegra_dc_stats {
111	unsigned long frames;
112	unsigned long vblank;
113	unsigned long underflow;
114	unsigned long overflow;
115};
116
117struct tegra_dc {
118	struct host1x_client client;
119	struct host1x_syncpt *syncpt;
120	struct device *dev;
121	spinlock_t lock;
122
123	struct drm_crtc base;
124	unsigned int powergate;
125	int pipe;
126
127	struct clk *clk;
128	struct reset_control *rst;
129	void __iomem *regs;
130	int irq;
131
132	struct tegra_output *rgb;
133
134	struct tegra_dc_stats stats;
135	struct list_head list;
136
137	struct drm_info_list *debugfs_files;
138	struct drm_minor *minor;
139	struct dentry *debugfs;
140
141	/* page-flip handling */
142	struct drm_pending_vblank_event *event;
143
144	const struct tegra_dc_soc_info *soc;
145
146	struct iommu_domain *domain;
147};
148
149static inline struct tegra_dc *
150host1x_client_to_dc(struct host1x_client *client)
151{
152	return container_of(client, struct tegra_dc, client);
153}
154
155static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
156{
157	return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
158}
159
160static inline void tegra_dc_writel(struct tegra_dc *dc, u32 value,
161				   unsigned long offset)
162{
163	writel(value, dc->regs + (offset << 2));
164}
165
166static inline u32 tegra_dc_readl(struct tegra_dc *dc, unsigned long offset)
167{
168	return readl(dc->regs + (offset << 2));
169}
170
171struct tegra_dc_window {
172	struct {
173		unsigned int x;
174		unsigned int y;
175		unsigned int w;
176		unsigned int h;
177	} src;
178	struct {
179		unsigned int x;
180		unsigned int y;
181		unsigned int w;
182		unsigned int h;
183	} dst;
184	unsigned int bits_per_pixel;
185	unsigned int stride[2];
186	unsigned long base[3];
187	bool bottom_up;
188
189	struct tegra_bo_tiling tiling;
190	u32 format;
191	u32 swap;
192};
193
194/* from dc.c */
195u32 tegra_dc_get_vblank_counter(struct tegra_dc *dc);
196void tegra_dc_enable_vblank(struct tegra_dc *dc);
197void tegra_dc_disable_vblank(struct tegra_dc *dc);
198void tegra_dc_commit(struct tegra_dc *dc);
199int tegra_dc_state_setup_clock(struct tegra_dc *dc,
200			       struct drm_crtc_state *crtc_state,
201			       struct clk *clk, unsigned long pclk,
202			       unsigned int div);
203
204struct tegra_output {
205	struct device_node *of_node;
206	struct device *dev;
207
208	struct drm_panel *panel;
209	struct i2c_adapter *ddc;
210	const struct edid *edid;
211	unsigned int hpd_irq;
212	int hpd_gpio;
213	enum of_gpio_flags hpd_gpio_flags;
214
215	struct drm_encoder encoder;
216	struct drm_connector connector;
217};
218
219static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
220{
221	return container_of(e, struct tegra_output, encoder);
222}
223
224static inline struct tegra_output *connector_to_output(struct drm_connector *c)
225{
226	return container_of(c, struct tegra_output, connector);
227}
228
229/* from rgb.c */
230int tegra_dc_rgb_probe(struct tegra_dc *dc);
231int tegra_dc_rgb_remove(struct tegra_dc *dc);
232int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
233int tegra_dc_rgb_exit(struct tegra_dc *dc);
234
235/* from output.c */
236int tegra_output_probe(struct tegra_output *output);
237void tegra_output_remove(struct tegra_output *output);
238int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
239void tegra_output_exit(struct tegra_output *output);
240
241int tegra_output_connector_get_modes(struct drm_connector *connector);
242enum drm_connector_status
243tegra_output_connector_detect(struct drm_connector *connector, bool force);
244void tegra_output_connector_destroy(struct drm_connector *connector);
245
246void tegra_output_encoder_destroy(struct drm_encoder *encoder);
247
248/* from dpaux.c */
249struct drm_dp_link;
250
251struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
252enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
253int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
254int drm_dp_aux_detach(struct drm_dp_aux *aux);
255int drm_dp_aux_enable(struct drm_dp_aux *aux);
256int drm_dp_aux_disable(struct drm_dp_aux *aux);
257int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
258int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
259		     u8 pattern);
260
261/* from fb.c */
262struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
263				    unsigned int index);
264bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
265int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
266			struct tegra_bo_tiling *tiling);
267struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
268					struct drm_file *file,
269					const struct drm_mode_fb_cmd2 *cmd);
270int tegra_drm_fb_prepare(struct drm_device *drm);
271void tegra_drm_fb_free(struct drm_device *drm);
272int tegra_drm_fb_init(struct drm_device *drm);
273void tegra_drm_fb_exit(struct drm_device *drm);
274void tegra_drm_fb_suspend(struct drm_device *drm);
275void tegra_drm_fb_resume(struct drm_device *drm);
276#ifdef CONFIG_DRM_FBDEV_EMULATION
277void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
278void tegra_fb_output_poll_changed(struct drm_device *drm);
279#endif
280
281extern struct platform_driver tegra_dc_driver;
282extern struct platform_driver tegra_hdmi_driver;
283extern struct platform_driver tegra_dsi_driver;
284extern struct platform_driver tegra_dpaux_driver;
285extern struct platform_driver tegra_sor_driver;
286extern struct platform_driver tegra_gr2d_driver;
287extern struct platform_driver tegra_gr3d_driver;
288
289#endif /* HOST1X_DRM_H */