1/* exynos_drm_drv.h
  2 *
  3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
  4 * Authors:
  5 *	Inki Dae <inki.dae@samsung.com>
  6 *	Joonyoung Shim <jy0922.shim@samsung.com>
  7 *	Seung-Woo Kim <sw0312.kim@samsung.com>
  8 *
  9 * This program is free software; you can redistribute  it and/or modify it
 10 * under  the terms of  the GNU General  Public License as published by the
 11 * Free Software Foundation;  either version 2 of the  License, or (at your
 12 * option) any later version.
 13 */
 14
 15#ifndef _EXYNOS_DRM_DRV_H_
 16#define _EXYNOS_DRM_DRV_H_
 17
 18#include <drm/drmP.h>
 19#include <linux/module.h>
 20
 21#define MAX_CRTC	3
 22#define MAX_PLANE	5
 23#define MAX_FB_BUFFER	4
 
 24
 25#define DEFAULT_WIN	0
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 26
 27#define to_exynos_crtc(x)	container_of(x, struct exynos_drm_crtc, base)
 28#define to_exynos_plane(x)	container_of(x, struct exynos_drm_plane, base)
 29
 30/* this enumerates display type. */
 31enum exynos_drm_output_type {
 32	EXYNOS_DISPLAY_TYPE_NONE,
 33	/* RGB or CPU Interface. */
 34	EXYNOS_DISPLAY_TYPE_LCD,
 35	/* HDMI Interface. */
 36	EXYNOS_DISPLAY_TYPE_HDMI,
 37	/* Virtual Display Interface. */
 38	EXYNOS_DISPLAY_TYPE_VIDI,
 39};
 40
 41struct exynos_drm_rect {
 42	unsigned int x, y;
 43	unsigned int w, h;
 44};
 45
 46/*
 47 * Exynos drm plane state structure.
 48 *
 49 * @base: plane_state object (contains drm_framebuffer pointer)
 50 * @src: rectangle of the source image data to be displayed (clipped to
 51 *       visible part).
 52 * @crtc: rectangle of the target image position on hardware screen
 53 *       (clipped to visible part).
 54 * @h_ratio: horizontal scaling ratio, 16.16 fixed point
 55 * @v_ratio: vertical scaling ratio, 16.16 fixed point
 56 *
 57 * this structure consists plane state data that will be applied to hardware
 58 * specific overlay info.
 59 */
 60
 61struct exynos_drm_plane_state {
 62	struct drm_plane_state base;
 63	struct exynos_drm_rect crtc;
 64	struct exynos_drm_rect src;
 65	unsigned int h_ratio;
 66	unsigned int v_ratio;
 67	unsigned int zpos;
 68};
 69
 70static inline struct exynos_drm_plane_state *
 71to_exynos_plane_state(struct drm_plane_state *state)
 72{
 73	return container_of(state, struct exynos_drm_plane_state, base);
 74}
 75
 76/*
 77 * Exynos drm common overlay structure.
 78 *
 79 * @base: plane object
 80 * @index: hardware index of the overlay layer
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 81 *
 82 * this structure is common to exynos SoC and its contents would be copied
 83 * to hardware specific overlay info.
 84 */
 85
 86struct exynos_drm_plane {
 87	struct drm_plane base;
 88	const struct exynos_drm_plane_config *config;
 89	unsigned int index;
 90	struct drm_framebuffer *pending_fb;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 91};
 92
 93#define EXYNOS_DRM_PLANE_CAP_DOUBLE	(1 << 0)
 94#define EXYNOS_DRM_PLANE_CAP_SCALE	(1 << 1)
 95#define EXYNOS_DRM_PLANE_CAP_ZPOS	(1 << 2)
 96
 97/*
 98 * Exynos DRM plane configuration structure.
 
 99 *
100 * @zpos: initial z-position of the plane.
101 * @type: type of the plane (primary, cursor or overlay).
102 * @pixel_formats: supported pixel formats.
103 * @num_pixel_formats: number of elements in 'pixel_formats'.
104 * @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*)
 
 
 
105 */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
106
107struct exynos_drm_plane_config {
108	unsigned int zpos;
109	enum drm_plane_type type;
110	const uint32_t *pixel_formats;
111	unsigned int num_pixel_formats;
112	unsigned int capabilities;
 
 
 
 
 
 
 
 
 
 
 
113};
114
115/*
116 * Exynos drm crtc ops
117 *
118 * @enable: enable the device
119 * @disable: disable the device
 
 
 
120 * @commit: set current hw specific display mode to hw.
121 * @enable_vblank: specific driver callback for enabling vblank interrupt.
122 * @disable_vblank: specific driver callback for disabling vblank interrupt.
123 * @wait_for_vblank: wait for vblank interrupt to make sure that
124 *	hardware overlay is updated.
125 * @atomic_check: validate state
126 * @atomic_begin: prepare device to receive an update
127 * @atomic_flush: mark the end of device update
128 * @update_plane: apply hardware specific overlay data to registers.
129 * @disable_plane: disable hardware specific overlay.
130 * @te_handler: trigger to transfer video image at the tearing effect
131 *	synchronization signal if there is a page flip request.
132 * @clock_enable: optional function enabling/disabling display domain clock,
133 *	called from exynos-dp driver before powering up (with
134 *	'enable' argument as true) and after powering down (with
135 *	'enable' as false).
136 */
137struct exynos_drm_crtc;
138struct exynos_drm_crtc_ops {
139	void (*enable)(struct exynos_drm_crtc *crtc);
140	void (*disable)(struct exynos_drm_crtc *crtc);
141	void (*commit)(struct exynos_drm_crtc *crtc);
142	int (*enable_vblank)(struct exynos_drm_crtc *crtc);
143	void (*disable_vblank)(struct exynos_drm_crtc *crtc);
144	void (*wait_for_vblank)(struct exynos_drm_crtc *crtc);
145	int (*atomic_check)(struct exynos_drm_crtc *crtc,
146			    struct drm_crtc_state *state);
147	void (*atomic_begin)(struct exynos_drm_crtc *crtc);
148	void (*update_plane)(struct exynos_drm_crtc *crtc,
149			     struct exynos_drm_plane *plane);
150	void (*disable_plane)(struct exynos_drm_crtc *crtc,
151			      struct exynos_drm_plane *plane);
152	void (*atomic_flush)(struct exynos_drm_crtc *crtc);
153	void (*te_handler)(struct exynos_drm_crtc *crtc);
154	void (*clock_enable)(struct exynos_drm_crtc *crtc, bool enable);
155};
156
157/*
158 * Exynos specific crtc structure.
159 *
160 * @base: crtc object.
161 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
162 * @pipe: a crtc index created at load() with a new crtc object creation
163 *	and the crtc object would be set to private->crtc array
164 *	to get a crtc object corresponding to this pipe from private->crtc
165 *	array when irq interrupt occurred. the reason of using this pipe is that
166 *	drm framework doesn't support multiple irq yet.
167 *	we can refer to the crtc to current hardware interrupt occurred through
168 *	this pipe value.
169 * @enabled: if the crtc is enabled or not
170 * @event: vblank event that is currently queued for flip
171 * @wait_update: wait all pending planes updates to finish
172 * @pending_update: number of pending plane updates in this crtc
173 * @ops: pointer to callbacks for exynos drm specific functionality
174 * @ctx: A pointer to the crtc's implementation specific context
175 */
176struct exynos_drm_crtc {
177	struct drm_crtc			base;
178	enum exynos_drm_output_type	type;
179	unsigned int			pipe;
180	struct drm_pending_vblank_event	*event;
181	wait_queue_head_t		wait_update;
182	atomic_t			pending_update;
183	const struct exynos_drm_crtc_ops	*ops;
184	void				*ctx;
185};
186
187struct exynos_drm_g2d_private {
188	struct device		*dev;
189	struct list_head	inuse_cmdlist;
190	struct list_head	event_list;
191	struct list_head	userptr_list;
192};
193
 
 
 
 
 
194struct drm_exynos_file_private {
195	struct exynos_drm_g2d_private	*g2d_priv;
196	struct device			*ipp_dev;
 
197};
198
199/*
200 * Exynos drm private structure.
201 *
202 * @da_start: start address to device address space.
203 *	with iommu, device address space starts from this address
204 *	otherwise default one.
205 * @da_space_size: size of device address space.
206 *	if 0 then default value is used for it.
207 * @pipe: the pipe number for this crtc/manager.
208 * @pending: the crtcs that have pending updates to finish
209 * @lock: protect access to @pending
210 * @wait: wait an atomic commit to finish
211 */
212struct exynos_drm_private {
213	struct drm_fb_helper *fb_helper;
214
 
 
 
215	/*
216	 * created crtc object would be contained at this array and
217	 * this array is used to be aware of which crtc did it request vblank.
218	 */
219	struct drm_crtc *crtc[MAX_CRTC];
220	struct drm_property *plane_zpos_property;
 
221
222	struct device *dma_dev;
223	unsigned long da_start;
224	unsigned long da_space_size;
225	void *mapping;
226
227	unsigned int pipe;
228
229	/* for atomic commit */
230	u32			pending;
231	spinlock_t		lock;
232	wait_queue_head_t	wait;
233};
234
235static inline struct device *to_dma_dev(struct drm_device *dev)
236{
237	struct exynos_drm_private *priv = dev->dev_private;
238
239	return priv->dma_dev;
240}
241
242/*
243 * Exynos drm sub driver structure.
244 *
245 * @list: sub driver has its own list object to register to exynos drm driver.
246 * @dev: pointer to device object for subdrv device driver.
247 * @drm_dev: pointer to drm_device and this pointer would be set
248 *	when sub driver calls exynos_drm_subdrv_register().
 
 
249 * @probe: this callback would be called by exynos drm driver after
250 *     subdrv is registered to it.
251 * @remove: this callback is used to release resources created
252 *     by probe callback.
253 * @open: this would be called with drm device file open.
254 * @close: this would be called with drm device file close.
255 */
256struct exynos_drm_subdrv {
257	struct list_head list;
258	struct device *dev;
259	struct drm_device *drm_dev;
260
261	int (*probe)(struct drm_device *drm_dev, struct device *dev);
262	void (*remove)(struct drm_device *drm_dev, struct device *dev);
263	int (*open)(struct drm_device *drm_dev, struct device *dev,
264			struct drm_file *file);
265	void (*close)(struct drm_device *drm_dev, struct device *dev,
266			struct drm_file *file);
267};
268
269 /* This function would be called by non kms drivers such as g2d and ipp. */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
270int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
271
272/* this function removes subdrv list from exynos drm driver */
273int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
274
275int exynos_drm_device_subdrv_probe(struct drm_device *dev);
276int exynos_drm_device_subdrv_remove(struct drm_device *dev);
277int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
278void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
279
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
280#ifdef CONFIG_DRM_EXYNOS_DPI
281struct drm_encoder *exynos_dpi_probe(struct device *dev);
282int exynos_dpi_remove(struct drm_encoder *encoder);
283int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
284#else
285static inline struct drm_encoder *
286exynos_dpi_probe(struct device *dev) { return NULL; }
287static inline int exynos_dpi_remove(struct drm_encoder *encoder)
288{
289	return 0;
290}
291static inline int exynos_dpi_bind(struct drm_device *dev,
292				  struct drm_encoder *encoder)
293{
294	return 0;
295}
296#endif
297
298int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
299			 bool async);
300
301
302extern struct platform_driver fimd_driver;
303extern struct platform_driver exynos5433_decon_driver;
304extern struct platform_driver decon_driver;
305extern struct platform_driver dp_driver;
306extern struct platform_driver dsi_driver;
307extern struct platform_driver mixer_driver;
308extern struct platform_driver hdmi_driver;
 
 
309extern struct platform_driver vidi_driver;
310extern struct platform_driver g2d_driver;
311extern struct platform_driver fimc_driver;
312extern struct platform_driver rotator_driver;
313extern struct platform_driver gsc_driver;
314extern struct platform_driver ipp_driver;
315extern struct platform_driver mic_driver;
316#endif

  1/* exynos_drm_drv.h
  2 *
  3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
  4 * Authors:
  5 *	Inki Dae <inki.dae@samsung.com>
  6 *	Joonyoung Shim <jy0922.shim@samsung.com>
  7 *	Seung-Woo Kim <sw0312.kim@samsung.com>
  8 *
  9 * This program is free software; you can redistribute  it and/or modify it
 10 * under  the terms of  the GNU General  Public License as published by the
 11 * Free Software Foundation;  either version 2 of the  License, or (at your
 12 * option) any later version.
 13 */
 14
 15#ifndef _EXYNOS_DRM_DRV_H_
 16#define _EXYNOS_DRM_DRV_H_
 17
 
 18#include <linux/module.h>
 19
 20#define MAX_CRTC	3
 21#define MAX_PLANE	5
 22#define MAX_FB_BUFFER	4
 23#define DEFAULT_ZPOS	-1
 24
 25#define _wait_for(COND, MS) ({ \
 26	unsigned long timeout__ = jiffies + msecs_to_jiffies(MS);	\
 27	int ret__ = 0;							\
 28	while (!(COND)) {						\
 29		if (time_after(jiffies, timeout__)) {			\
 30			ret__ = -ETIMEDOUT;				\
 31			break;						\
 32		}							\
 33	}								\
 34	ret__;								\
 35})
 36
 37#define wait_for(COND, MS) _wait_for(COND, MS)
 38
 39struct drm_device;
 40struct exynos_drm_overlay;
 41struct drm_connector;
 42
 43extern unsigned int drm_vblank_offdelay;
 
 44
 45/* this enumerates display type. */
 46enum exynos_drm_output_type {
 47	EXYNOS_DISPLAY_TYPE_NONE,
 48	/* RGB or CPU Interface. */
 49	EXYNOS_DISPLAY_TYPE_LCD,
 50	/* HDMI Interface. */
 51	EXYNOS_DISPLAY_TYPE_HDMI,
 52	/* Virtual Display Interface. */
 53	EXYNOS_DISPLAY_TYPE_VIDI,
 54};
 55
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 56/*
 57 * Exynos drm common overlay structure.
 58 *
 59 * @fb_x: offset x on a framebuffer to be displayed.
 60 *	- the unit is screen coordinates.
 61 * @fb_y: offset y on a framebuffer to be displayed.
 62 *	- the unit is screen coordinates.
 63 * @fb_width: width of a framebuffer.
 64 * @fb_height: height of a framebuffer.
 65 * @src_width: width of a partial image to be displayed from framebuffer.
 66 * @src_height: height of a partial image to be displayed from framebuffer.
 67 * @crtc_x: offset x on hardware screen.
 68 * @crtc_y: offset y on hardware screen.
 69 * @crtc_width: window width to be displayed (hardware screen).
 70 * @crtc_height: window height to be displayed (hardware screen).
 71 * @mode_width: width of screen mode.
 72 * @mode_height: height of screen mode.
 73 * @refresh: refresh rate.
 74 * @scan_flag: interlace or progressive way.
 75 *	(it could be DRM_MODE_FLAG_*)
 76 * @bpp: pixel size.(in bit)
 77 * @pixel_format: fourcc pixel format of this overlay
 78 * @dma_addr: array of bus(accessed by dma) address to the memory region
 79 *	      allocated for a overlay.
 80 * @zpos: order of overlay layer(z position).
 81 * @default_win: a window to be enabled.
 82 * @color_key: color key on or off.
 83 * @index_color: if using color key feature then this value would be used
 84 *			as index color.
 85 * @local_path: in case of lcd type, local path mode on or off.
 86 * @transparency: transparency on or off.
 87 * @activated: activated or not.
 88 *
 89 * this structure is common to exynos SoC and its contents would be copied
 90 * to hardware specific overlay info.
 91 */
 92struct exynos_drm_overlay {
 93	unsigned int fb_x;
 94	unsigned int fb_y;
 95	unsigned int fb_width;
 96	unsigned int fb_height;
 97	unsigned int src_width;
 98	unsigned int src_height;
 99	unsigned int crtc_x;
100	unsigned int crtc_y;
101	unsigned int crtc_width;
102	unsigned int crtc_height;
103	unsigned int mode_width;
104	unsigned int mode_height;
105	unsigned int refresh;
106	unsigned int scan_flag;
107	unsigned int bpp;
108	unsigned int pitch;
109	uint32_t pixel_format;
110	dma_addr_t dma_addr[MAX_FB_BUFFER];
111	int zpos;
112
113	bool default_win;
114	bool color_key;
115	unsigned int index_color;
116	bool local_path;
117	bool transparency;
118	bool activated;
119};
120
 
 
 
 
121/*
122 * Exynos DRM Display Structure.
123 *	- this structure is common to analog tv, digital tv and lcd panel.
124 *
125 * @initialize: initializes the display with drm_dev
126 * @remove: cleans up the display for removal
127 * @mode_fixup: fix mode data comparing to hw specific display mode.
128 * @mode_set: convert drm_display_mode to hw specific display mode and
129 *	      would be called by encoder->mode_set().
130 * @check_mode: check if mode is valid or not.
131 * @dpms: display device on or off.
132 * @commit: apply changes to hw
133 */
134struct exynos_drm_display;
135struct exynos_drm_display_ops {
136	int (*initialize)(struct exynos_drm_display *display,
137				struct drm_device *drm_dev);
138	int (*create_connector)(struct exynos_drm_display *display,
139				struct drm_encoder *encoder);
140	void (*remove)(struct exynos_drm_display *display);
141	void (*mode_fixup)(struct exynos_drm_display *display,
142				struct drm_connector *connector,
143				const struct drm_display_mode *mode,
144				struct drm_display_mode *adjusted_mode);
145	void (*mode_set)(struct exynos_drm_display *display,
146				struct drm_display_mode *mode);
147	int (*check_mode)(struct exynos_drm_display *display,
148				struct drm_display_mode *mode);
149	void (*dpms)(struct exynos_drm_display *display, int mode);
150	void (*commit)(struct exynos_drm_display *display);
151};
152
153/*
154 * Exynos drm display structure, maps 1:1 with an encoder/connector
155 *
156 * @list: the list entry for this manager
157 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
158 * @encoder: encoder object this display maps to
159 * @connector: connector object this display maps to
160 * @ops: pointer to callbacks for exynos drm specific functionality
161 * @ctx: A pointer to the display's implementation specific context
162 */
163struct exynos_drm_display {
164	struct list_head list;
165	enum exynos_drm_output_type type;
166	struct drm_encoder *encoder;
167	struct drm_connector *connector;
168	struct exynos_drm_display_ops *ops;
169	void *ctx;
170};
171
172/*
173 * Exynos drm manager ops
174 *
175 * @initialize: initializes the manager with drm_dev
176 * @remove: cleans up the manager for removal
177 * @dpms: control device power.
178 * @mode_fixup: fix mode data before applying it
179 * @mode_set: set the given mode to the manager
180 * @commit: set current hw specific display mode to hw.
181 * @enable_vblank: specific driver callback for enabling vblank interrupt.
182 * @disable_vblank: specific driver callback for disabling vblank interrupt.
183 * @wait_for_vblank: wait for vblank interrupt to make sure that
184 *	hardware overlay is updated.
185 * @win_mode_set: copy drm overlay info to hw specific overlay info.
186 * @win_commit: apply hardware specific overlay data to registers.
187 * @win_enable: enable hardware specific overlay.
188 * @win_disable: disable hardware specific overlay.
189 */
190struct exynos_drm_manager;
191struct exynos_drm_manager_ops {
192	int (*initialize)(struct exynos_drm_manager *mgr,
193				struct drm_device *drm_dev, int pipe);
194	void (*remove)(struct exynos_drm_manager *mgr);
195	void (*dpms)(struct exynos_drm_manager *mgr, int mode);
196	bool (*mode_fixup)(struct exynos_drm_manager *mgr,
197				const struct drm_display_mode *mode,
198				struct drm_display_mode *adjusted_mode);
199	void (*mode_set)(struct exynos_drm_manager *mgr,
200				const struct drm_display_mode *mode);
201	void (*commit)(struct exynos_drm_manager *mgr);
202	int (*enable_vblank)(struct exynos_drm_manager *mgr);
203	void (*disable_vblank)(struct exynos_drm_manager *mgr);
204	void (*wait_for_vblank)(struct exynos_drm_manager *mgr);
205	void (*win_mode_set)(struct exynos_drm_manager *mgr,
206				struct exynos_drm_overlay *overlay);
207	void (*win_commit)(struct exynos_drm_manager *mgr, int zpos);
208	void (*win_enable)(struct exynos_drm_manager *mgr, int zpos);
209	void (*win_disable)(struct exynos_drm_manager *mgr, int zpos);
 
 
 
 
 
210};
211
212/*
213 * Exynos drm common manager structure, maps 1:1 with a crtc
214 *
215 * @list: the list entry for this manager
216 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
217 * @drm_dev: pointer to the drm device
218 * @pipe: the pipe number for this crtc/manager
 
 
 
 
 
 
 
 
 
219 * @ops: pointer to callbacks for exynos drm specific functionality
220 * @ctx: A pointer to the manager's implementation specific context
221 */
222struct exynos_drm_manager {
223	struct list_head list;
224	enum exynos_drm_output_type type;
225	struct drm_device *drm_dev;
226	int pipe;
227	struct exynos_drm_manager_ops *ops;
228	void *ctx;
 
 
229};
230
231struct exynos_drm_g2d_private {
232	struct device		*dev;
233	struct list_head	inuse_cmdlist;
234	struct list_head	event_list;
235	struct list_head	userptr_list;
236};
237
238struct exynos_drm_ipp_private {
239	struct device	*dev;
240	struct list_head	event_list;
241};
242
243struct drm_exynos_file_private {
244	struct exynos_drm_g2d_private	*g2d_priv;
245	struct exynos_drm_ipp_private	*ipp_priv;
246	struct file			*anon_filp;
247};
248
249/*
250 * Exynos drm private structure.
251 *
252 * @da_start: start address to device address space.
253 *	with iommu, device address space starts from this address
254 *	otherwise default one.
255 * @da_space_size: size of device address space.
256 *	if 0 then default value is used for it.
 
 
 
 
257 */
258struct exynos_drm_private {
259	struct drm_fb_helper *fb_helper;
260
261	/* list head for new event to be added. */
262	struct list_head pageflip_event_list;
263
264	/*
265	 * created crtc object would be contained at this array and
266	 * this array is used to be aware of which crtc did it request vblank.
267	 */
268	struct drm_crtc *crtc[MAX_CRTC];
269	struct drm_property *plane_zpos_property;
270	struct drm_property *crtc_mode_property;
271
 
272	unsigned long da_start;
273	unsigned long da_space_size;
 
 
 
 
 
 
 
 
274};
275
 
 
 
 
 
 
 
276/*
277 * Exynos drm sub driver structure.
278 *
279 * @list: sub driver has its own list object to register to exynos drm driver.
280 * @dev: pointer to device object for subdrv device driver.
281 * @drm_dev: pointer to drm_device and this pointer would be set
282 *	when sub driver calls exynos_drm_subdrv_register().
283 * @manager: subdrv has its own manager to control a hardware appropriately
284 *	and we can access a hardware drawing on this manager.
285 * @probe: this callback would be called by exynos drm driver after
286 *	subdrv is registered to it.
287 * @remove: this callback is used to release resources created
288 *	by probe callback.
289 * @open: this would be called with drm device file open.
290 * @close: this would be called with drm device file close.
291 */
292struct exynos_drm_subdrv {
293	struct list_head list;
294	struct device *dev;
295	struct drm_device *drm_dev;
296
297	int (*probe)(struct drm_device *drm_dev, struct device *dev);
298	void (*remove)(struct drm_device *drm_dev, struct device *dev);
299	int (*open)(struct drm_device *drm_dev, struct device *dev,
300			struct drm_file *file);
301	void (*close)(struct drm_device *drm_dev, struct device *dev,
302			struct drm_file *file);
303};
304
305/*
306 * this function calls a probe callback registered to sub driver list and
307 * create its own encoder and connector and then set drm_device object
308 * to global one.
309 */
310int exynos_drm_device_register(struct drm_device *dev);
311/*
312 * this function calls a remove callback registered to sub driver list and
313 * destroy its own encoder and connetor.
314 */
315int exynos_drm_device_unregister(struct drm_device *dev);
316
317int exynos_drm_initialize_managers(struct drm_device *dev);
318void exynos_drm_remove_managers(struct drm_device *dev);
319int exynos_drm_initialize_displays(struct drm_device *dev);
320void exynos_drm_remove_displays(struct drm_device *dev);
321
322int exynos_drm_manager_register(struct exynos_drm_manager *manager);
323int exynos_drm_manager_unregister(struct exynos_drm_manager *manager);
324int exynos_drm_display_register(struct exynos_drm_display *display);
325int exynos_drm_display_unregister(struct exynos_drm_display *display);
326
327/*
328 * this function would be called by sub drivers such as display controller
329 * or hdmi driver to register this sub driver object to exynos drm driver
330 * and when a sub driver is registered to exynos drm driver a probe callback
331 * of the sub driver is called and creates its own encoder and connector.
332 */
333int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
334
335/* this function removes subdrv list from exynos drm driver */
336int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
337
 
 
338int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
339void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
340
341/*
342 * this function registers exynos drm hdmi platform device. It ensures only one
343 * instance of the device is created.
344 */
345int exynos_platform_device_hdmi_register(void);
346
347/*
348 * this function unregisters exynos drm hdmi platform device if it exists.
349 */
350void exynos_platform_device_hdmi_unregister(void);
351
352/*
353 * this function registers exynos drm ipp platform device.
354 */
355int exynos_platform_device_ipp_register(void);
356
357/*
358 * this function unregisters exynos drm ipp platform device if it exists.
359 */
360void exynos_platform_device_ipp_unregister(void);
361
362#ifdef CONFIG_DRM_EXYNOS_DPI
363int exynos_dpi_probe(struct device *dev);
364int exynos_dpi_remove(struct device *dev);
 
365#else
366static inline int exynos_dpi_probe(struct device *dev) { return 0; }
367static inline int exynos_dpi_remove(struct device *dev) { return 0; }
 
 
 
 
 
 
 
 
 
368#endif
369
 
 
 
 
 
 
 
370extern struct platform_driver dp_driver;
371extern struct platform_driver dsi_driver;
372extern struct platform_driver fimd_driver;
373extern struct platform_driver hdmi_driver;
374extern struct platform_driver mixer_driver;
375extern struct platform_driver exynos_drm_common_hdmi_driver;
376extern struct platform_driver vidi_driver;
377extern struct platform_driver g2d_driver;
378extern struct platform_driver fimc_driver;
379extern struct platform_driver rotator_driver;
380extern struct platform_driver gsc_driver;
381extern struct platform_driver ipp_driver;
 
382#endif