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
 16#include <drm/drmP.h>
 17#include <drm/drm_crtc_helper.h>
 18#include <drm/drm_edid.h>
 19#include <drm/drm_fb_helper.h>
 20#include <drm/drm_fixed.h>
 21
 22struct reset_control;
 23
 24struct tegra_fb {
 25	struct drm_framebuffer base;
 26	struct tegra_bo **planes;
 27	unsigned int num_planes;
 28};
 29
 30#ifdef CONFIG_DRM_TEGRA_FBDEV
 31struct tegra_fbdev {
 32	struct drm_fb_helper base;
 33	struct tegra_fb *fb;
 34};
 35#endif
 36
 37struct tegra_drm {
 38	struct drm_device *drm;
 39
 40	struct mutex clients_lock;
 41	struct list_head clients;
 42
 43#ifdef CONFIG_DRM_TEGRA_FBDEV
 44	struct tegra_fbdev *fbdev;
 45#endif
 46};
 47
 48struct tegra_drm_client;
 49
 50struct tegra_drm_context {
 51	struct tegra_drm_client *client;
 52	struct host1x_channel *channel;
 53	struct list_head list;
 54};
 55
 56struct tegra_drm_client_ops {
 57	int (*open_channel)(struct tegra_drm_client *client,
 58			    struct tegra_drm_context *context);
 59	void (*close_channel)(struct tegra_drm_context *context);
 60	int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
 61	int (*submit)(struct tegra_drm_context *context,
 62		      struct drm_tegra_submit *args, struct drm_device *drm,
 63		      struct drm_file *file);
 64};
 65
 66int tegra_drm_submit(struct tegra_drm_context *context,
 67		     struct drm_tegra_submit *args, struct drm_device *drm,
 68		     struct drm_file *file);
 69
 70struct tegra_drm_client {
 71	struct host1x_client base;
 72	struct list_head list;
 73
 74	const struct tegra_drm_client_ops *ops;
 75};
 76
 77static inline struct tegra_drm_client *
 78host1x_to_drm_client(struct host1x_client *client)
 79{
 80	return container_of(client, struct tegra_drm_client, base);
 81}
 82
 83extern int tegra_drm_register_client(struct tegra_drm *tegra,
 84				     struct tegra_drm_client *client);
 85extern int tegra_drm_unregister_client(struct tegra_drm *tegra,
 86				       struct tegra_drm_client *client);
 87
 88extern int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
 89extern int tegra_drm_exit(struct tegra_drm *tegra);
 90
 91struct tegra_dc_soc_info;
 92struct tegra_output;
 93
 94struct tegra_dc {
 95	struct host1x_client client;
 96	struct device *dev;
 97	spinlock_t lock;
 98
 99	struct drm_crtc base;
100	int pipe;
101
102	struct clk *clk;
103	struct reset_control *rst;
104	void __iomem *regs;
105	int irq;
106
107	struct tegra_output *rgb;
108
109	struct list_head list;
110
111	struct drm_info_list *debugfs_files;
112	struct drm_minor *minor;
113	struct dentry *debugfs;
114
115	/* page-flip handling */
116	struct drm_pending_vblank_event *event;
117
118	const struct tegra_dc_soc_info *soc;
119};
120
121static inline struct tegra_dc *
122host1x_client_to_dc(struct host1x_client *client)
123{
124	return container_of(client, struct tegra_dc, client);
125}
126
127static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
128{
129	return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
130}
131
132static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long value,
133				   unsigned long reg)
134{
135	writel(value, dc->regs + (reg << 2));
136}
137
138static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
139					   unsigned long reg)
140{
141	return readl(dc->regs + (reg << 2));
142}
143
144struct tegra_dc_window {
145	struct {
146		unsigned int x;
147		unsigned int y;
148		unsigned int w;
149		unsigned int h;
150	} src;
151	struct {
152		unsigned int x;
153		unsigned int y;
154		unsigned int w;
155		unsigned int h;
156	} dst;
157	unsigned int bits_per_pixel;
158	unsigned int format;
159	unsigned int stride[2];
160	unsigned long base[3];
161	bool bottom_up;
162	bool tiled;
163};
164
165/* from dc.c */
166extern unsigned int tegra_dc_format(uint32_t format);
167extern int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
168				 const struct tegra_dc_window *window);
169extern void tegra_dc_enable_vblank(struct tegra_dc *dc);
170extern void tegra_dc_disable_vblank(struct tegra_dc *dc);
171extern void tegra_dc_cancel_page_flip(struct drm_crtc *crtc,
172				      struct drm_file *file);
173
174struct tegra_output_ops {
175	int (*enable)(struct tegra_output *output);
176	int (*disable)(struct tegra_output *output);
177	int (*setup_clock)(struct tegra_output *output, struct clk *clk,
178			   unsigned long pclk);
179	int (*check_mode)(struct tegra_output *output,
180			  struct drm_display_mode *mode,
181			  enum drm_mode_status *status);
182	enum drm_connector_status (*detect)(struct tegra_output *output);
183};
184
185enum tegra_output_type {
186	TEGRA_OUTPUT_RGB,
187	TEGRA_OUTPUT_HDMI,
188	TEGRA_OUTPUT_DSI,
189	TEGRA_OUTPUT_EDP,
190};
191
192struct tegra_output {
193	struct device_node *of_node;
194	struct device *dev;
195
196	const struct tegra_output_ops *ops;
197	enum tegra_output_type type;
198
199	struct drm_panel *panel;
200	struct i2c_adapter *ddc;
201	const struct edid *edid;
202	unsigned int hpd_irq;
203	int hpd_gpio;
204
205	struct drm_encoder encoder;
206	struct drm_connector connector;
207};
208
209static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
210{
211	return container_of(e, struct tegra_output, encoder);
212}
213
214static inline struct tegra_output *connector_to_output(struct drm_connector *c)
215{
216	return container_of(c, struct tegra_output, connector);
217}
218
219static inline int tegra_output_enable(struct tegra_output *output)
220{
221	if (output && output->ops && output->ops->enable)
222		return output->ops->enable(output);
223
224	return output ? -ENOSYS : -EINVAL;
225}
226
227static inline int tegra_output_disable(struct tegra_output *output)
228{
229	if (output && output->ops && output->ops->disable)
230		return output->ops->disable(output);
231
232	return output ? -ENOSYS : -EINVAL;
233}
234
235static inline int tegra_output_setup_clock(struct tegra_output *output,
236					   struct clk *clk, unsigned long pclk)
237{
238	if (output && output->ops && output->ops->setup_clock)
239		return output->ops->setup_clock(output, clk, pclk);
240
241	return output ? -ENOSYS : -EINVAL;
242}
243
244static inline int tegra_output_check_mode(struct tegra_output *output,
245					  struct drm_display_mode *mode,
246					  enum drm_mode_status *status)
247{
248	if (output && output->ops && output->ops->check_mode)
249		return output->ops->check_mode(output, mode, status);
250
251	return output ? -ENOSYS : -EINVAL;
252}
253
254/* from bus.c */
255int drm_host1x_init(struct drm_driver *driver, struct host1x_device *device);
256void drm_host1x_exit(struct drm_driver *driver, struct host1x_device *device);
257
258/* from rgb.c */
259extern int tegra_dc_rgb_probe(struct tegra_dc *dc);
260extern int tegra_dc_rgb_remove(struct tegra_dc *dc);
261extern int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
262extern int tegra_dc_rgb_exit(struct tegra_dc *dc);
263
264/* from output.c */
265extern int tegra_output_probe(struct tegra_output *output);
266extern int tegra_output_remove(struct tegra_output *output);
267extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
268extern int tegra_output_exit(struct tegra_output *output);
269
270/* from dpaux.c */
271
272struct tegra_dpaux;
273struct drm_dp_link;
274struct drm_dp_aux;
275
276struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
277enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
278int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
279int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
280int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
281int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
282int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
283int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
284		      u8 pattern);
285
286/* from fb.c */
287struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
288				    unsigned int index);
289bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
290bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer);
291extern int tegra_drm_fb_init(struct drm_device *drm);
292extern void tegra_drm_fb_exit(struct drm_device *drm);
293#ifdef CONFIG_DRM_TEGRA_FBDEV
294extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
295#endif
296
297extern struct platform_driver tegra_dc_driver;
298extern struct platform_driver tegra_dsi_driver;
299extern struct platform_driver tegra_sor_driver;
300extern struct platform_driver tegra_hdmi_driver;
301extern struct platform_driver tegra_dpaux_driver;
302extern struct platform_driver tegra_gr2d_driver;
303extern struct platform_driver tegra_gr3d_driver;
304
305#endif /* HOST1X_DRM_H */