summaryrefslogtreecommitdiffstats
path: root/include/video/exynos_mipi_dsim.h
blob: 772c770535f1ee02075b632a4bb1ca91bda078dc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
/* include/video/exynos_mipi_dsim.h
 *
 * Platform data header for Samsung SoC MIPI-DSIM.
 *
 * Copyright (c) 2012 Samsung Electronics Co., Ltd
 *
 * InKi Dae <inki.dae@samsung.com>
 * Donghwa Lee <dh09.lee@samsung.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#ifndef _EXYNOS_MIPI_DSIM_H
#define _EXYNOS_MIPI_DSIM_H

#include <linux/device.h>
#include <linux/fb.h>

#define PANEL_NAME_SIZE		(32)

/*
 * Enumerate display interface type.
 *
 * DSIM_COMMAND means cpu interface and rgb interface for DSIM_VIDEO.
 *
 * P.S. MIPI DSI Master has two display controller intefaces, RGB Interface
 *	for main display and CPU Interface(same as I80 Interface) for main
 *	and sub display.
 */
enum mipi_dsim_interface_type {
	DSIM_COMMAND,
	DSIM_VIDEO
};

enum mipi_dsim_virtual_ch_no {
	DSIM_VIRTUAL_CH_0,
	DSIM_VIRTUAL_CH_1,
	DSIM_VIRTUAL_CH_2,
	DSIM_VIRTUAL_CH_3
};

enum mipi_dsim_burst_mode_type {
	DSIM_NON_BURST_SYNC_EVENT,
	DSIM_BURST_SYNC_EVENT,
	DSIM_NON_BURST_SYNC_PULSE,
	DSIM_BURST,
	DSIM_NON_VIDEO_MODE
};

enum mipi_dsim_no_of_data_lane {
	DSIM_DATA_LANE_1,
	DSIM_DATA_LANE_2,
	DSIM_DATA_LANE_3,
	DSIM_DATA_LANE_4
};

enum mipi_dsim_byte_clk_src {
	DSIM_PLL_OUT_DIV8,
	DSIM_EXT_CLK_DIV8,
	DSIM_EXT_CLK_BYPASS
};

enum mipi_dsim_pixel_format {
	DSIM_CMD_3BPP,
	DSIM_CMD_8BPP,
	DSIM_CMD_12BPP,
	DSIM_CMD_16BPP,
	DSIM_VID_16BPP_565,
	DSIM_VID_18BPP_666PACKED,
	DSIM_18BPP_666LOOSELYPACKED,
	DSIM_24BPP_888
};

/*
 * struct mipi_dsim_config - interface for configuring mipi-dsi controller.
 *
 * @auto_flush: enable or disable Auto flush of MD FIFO using VSYNC pulse.
 * @eot_disable: enable or disable EoT packet in HS mode.
 * @auto_vertical_cnt: specifies auto vertical count mode.
 *	in Video mode, the vertical line transition uses line counter
 *	configured by VSA, VBP, and Vertical resolution.
 *	If this bit is set to '1', the line counter does not use VSA and VBP
 *	registers.(in command mode, this variable is ignored)
 * @hse: set horizontal sync event mode.
 *	In VSYNC pulse and Vporch area, MIPI DSI master transfers only HSYNC
 *	start packet to MIPI DSI slave at MIPI DSI spec1.1r02.
 *	this bit transfers HSYNC end packet in VSYNC pulse and Vporch area
 *	(in mommand mode, this variable is ignored)
 * @hfp: specifies HFP disable mode.
 *	if this variable is set, DSI master ignores HFP area in VIDEO mode.
 *	(in command mode, this variable is ignored)
 * @hbp: specifies HBP disable mode.
 *	if this variable is set, DSI master ignores HBP area in VIDEO mode.
 *	(in command mode, this variable is ignored)
 * @hsa: specifies HSA disable mode.
 *	if this variable is set, DSI master ignores HSA area in VIDEO mode.
 *	(in command mode, this variable is ignored)
 * @cma_allow: specifies the number of horizontal lines, where command packet
 *	transmission is allowed after Stable VFP period.
 * @e_interface: specifies interface to be used.(CPU or RGB interface)
 * @e_virtual_ch: specifies virtual channel number that main or
 *	sub diaplsy uses.
 * @e_pixel_format: specifies pixel stream format for main or sub display.
 * @e_burst_mode: selects Burst mode in Video mode.
 *	in Non-burst mode, RGB data area is filled with RGB data and NULL
 *	packets, according to input bandwidth of RGB interface.
 *	In Burst mode, RGB data area is filled with RGB data only.
 * @e_no_data_lane: specifies data lane count to be used by Master.
 * @e_byte_clk: select byte clock source. (it must be DSIM_PLL_OUT_DIV8)
 *	DSIM_EXT_CLK_DIV8 and DSIM_EXT_CLK_BYPASSS are not supported.
 * @pll_stable_time: specifies the PLL Timer for stability of the ganerated
 *	clock(System clock cycle base)
 *	if the timer value goes to 0x00000000, the clock stable bit of status
 *	and interrupt register is set.
 * @esc_clk: specifies escape clock frequency for getting the escape clock
 *	prescaler value.
 * @stop_holding_cnt: specifies the interval value between transmitting
 *	read packet(or write "set_tear_on" command) and BTA request.
 *	after transmitting read packet or write "set_tear_on" command,
 *	BTA requests to D-PHY automatically. this counter value specifies
 *	the interval between them.
 * @bta_timeout: specifies the timer for BTA.
 *	this register specifies time out from BTA request to change
 *	the direction with respect to Tx escape clock.
 * @rx_timeout: specifies the timer for LP Rx mode timeout.
 *	this register specifies time out on how long RxValid deasserts,
 *	after RxLpdt asserts with respect to Tx escape clock.
 *	- RxValid specifies Rx data valid indicator.
 *	- RxLpdt specifies an indicator that D-PHY is under RxLpdt mode.
 *	- RxValid and RxLpdt specifies signal from D-PHY.
 */
struct mipi_dsim_config {
	unsigned char			auto_flush;
	unsigned char			eot_disable;

	unsigned char			auto_vertical_cnt;
	unsigned char			hse;
	unsigned char			hfp;
	unsigned char			hbp;
	unsigned char			hsa;
	unsigned char			cmd_allow;

	enum mipi_dsim_interface_type	e_interface;
	enum mipi_dsim_virtual_ch_no	e_virtual_ch;
	enum mipi_dsim_pixel_format	e_pixel_format;
	enum mipi_dsim_burst_mode_type	e_burst_mode;
	enum mipi_dsim_no_of_data_lane	e_no_data_lane;
	enum mipi_dsim_byte_clk_src	e_byte_clk;

	/*
	 * ===========================================
	 * |    P    |    M    |    S    |    MHz    |
	 * -------------------------------------------
	 * |    3    |   100   |    3    |    100    |
	 * |    3    |   100   |    2    |    200    |
	 * |    3    |    63   |    1    |    252    |
	 * |    4    |   100   |    1    |    300    |
	 * |    4    |   110   |    1    |    330    |
	 * |   12    |   350   |    1    |    350    |
	 * |    3    |   100   |    1    |    400    |
	 * |    4    |   150   |    1    |    450    |
	 * |    6    |   118   |    1    |    472    |
	 * |	3    |   120   |    1    |    480    |
	 * |   12    |   250   |    0    |    500    |
	 * |    4    |   100   |    0    |    600    |
	 * |    3    |    81   |    0    |    648    |
	 * |    3    |    88   |    0    |    704    |
	 * |    3    |    90   |    0    |    720    |
	 * |    3    |   100   |    0    |    800    |
	 * |   12    |   425   |    0    |    850    |
	 * |    4    |   150   |    0    |    900    |
	 * |   12    |   475   |    0    |    950    |
	 * |    6    |   250   |    0    |   1000    |
	 * -------------------------------------------
	 */

	/*
	 * pms could be calculated as the following.
	 * M * 24 / P * 2 ^ S = MHz
	 */
	unsigned char			p;
	unsigned short			m;
	unsigned char			s;

	unsigned int			pll_stable_time;
	unsigned long			esc_clk;

	unsigned short			stop_holding_cnt;
	unsigned char			bta_timeout;
	unsigned short			rx_timeout;
};

/*
 * struct mipi_dsim_device - global interface for mipi-dsi driver.
 *
 * @dev: driver model representation of the device.
 * @id: unique device id.
 * @clock: pointer to MIPI-DSI clock of clock framework.
 * @irq: interrupt number to MIPI-DSI controller.
 * @reg_base: base address to memory mapped SRF of MIPI-DSI controller.
 *	(virtual address)
 * @lock: the mutex protecting this data structure.
 * @dsim_info: infomation for configuring mipi-dsi controller.
 * @master_ops: callbacks to mipi-dsi operations.
 * @dsim_lcd_dev: pointer to activated ddi device.
 *	(it would be registered by mipi-dsi driver.)
 * @dsim_lcd_drv: pointer to activated_ddi driver.
 *	(it would be registered by mipi-dsi driver.)
 * @lcd_info: pointer to mipi_lcd_info structure.
 * @state: specifies status of MIPI-DSI controller.
 *	the status could be RESET, INIT, STOP, HSCLKEN and ULPS.
 * @data_lane: specifiec enabled data lane number.
 *	this variable would be set by driver according to e_no_data_lane
 *	automatically.
 * @e_clk_src: select byte clock source.
 * @pd: pointer to MIPI-DSI driver platform data.
 */
struct mipi_dsim_device {
	struct device			*dev;
	int				id;
	struct resource			*res;
	struct clk			*clock;
	unsigned int			irq;
	void __iomem			*reg_base;
	struct mutex			lock;

	struct mipi_dsim_config		*dsim_config;
	struct mipi_dsim_master_ops	*master_ops;
	struct mipi_dsim_lcd_device	*dsim_lcd_dev;
	struct mipi_dsim_lcd_driver	*dsim_lcd_drv;

	unsigned int			state;
	unsigned int			data_lane;
	unsigned int			e_clk_src;
	bool				suspended;

	struct mipi_dsim_platform_data	*pd;
};

/*
 * struct mipi_dsim_platform_data - interface to platform data
 *	for mipi-dsi driver.
 *
 * @lcd_panel_name: specifies lcd panel name registered to mipi-dsi driver.
 *	lcd panel driver searched would be actived.
 * @dsim_config: pointer of structure for configuring mipi-dsi controller.
 * @enabled: indicate whether mipi controller got enabled or not.
 * @lcd_panel_info: pointer for lcd panel specific structure.
 *	this structure specifies width, height, timing and polarity and so on.
 * @phy_enable: pointer to a callback controlling D-PHY enable/reset
 */
struct mipi_dsim_platform_data {
	char				lcd_panel_name[PANEL_NAME_SIZE];

	struct mipi_dsim_config		*dsim_config;
	unsigned int			enabled;
	void				*lcd_panel_info;

	int (*phy_enable)(struct platform_device *pdev, bool on);
};

/*
 * struct mipi_dsim_master_ops - callbacks to mipi-dsi operations.
 *
 * @cmd_write: transfer command to lcd panel at LP mode.
 * @cmd_read: read command from rx register.
 * @get_dsim_frame_done: get the status that all screen data have been
 *	transferred to mipi-dsi.
 * @clear_dsim_frame_done: clear frame done status.
 * @get_fb_frame_done: get frame done status of display controller.
 * @trigger: trigger display controller.
 *	- this one would be used only in case of CPU mode.
 *  @set_early_blank_mode: set framebuffer blank mode.
 *	- this callback should be called prior to fb_blank() by a client driver
 *	only if needing.
 *  @set_blank_mode: set framebuffer blank mode.
 *	- this callback should be called after fb_blank() by a client driver
 *	only if needing.
 */

struct mipi_dsim_master_ops {
	int (*cmd_write)(struct mipi_dsim_device *dsim, unsigned int data_id,
		const unsigned char *data0, unsigned int data1);
	int (*cmd_read)(struct mipi_dsim_device *dsim, unsigned int data_id,
		unsigned int data0, unsigned int req_size, u8 *rx_buf);
	int (*get_dsim_frame_done)(struct mipi_dsim_device *dsim);
	int (*clear_dsim_frame_done)(struct mipi_dsim_device *dsim);

	int (*get_fb_frame_done)(struct fb_info *info);
	void (*trigger)(struct fb_info *info);
	int (*set_early_blank_mode)(struct mipi_dsim_device *dsim, int power);
	int (*set_blank_mode)(struct mipi_dsim_device *dsim, int power);
};

/*
 * device structure for mipi-dsi based lcd panel.
 *
 * @name: name of the device to use with this device, or an
 *	alias for that name.
 * @dev: driver model representation of the device.
 * @id: id of device to be registered.
 * @bus_id: bus id for identifing connected bus
 *	and this bus id should be same as id of mipi_dsim_device.
 * @irq: irq number for signaling when framebuffer transfer of
 *	lcd panel module is completed.
 *	this irq would be used only for MIPI-DSI based CPU mode lcd panel.
 * @master: pointer to mipi-dsi master device object.
 * @platform_data: lcd panel specific platform data.
 */
struct mipi_dsim_lcd_device {
	char			*name;
	struct device		dev;
	int			id;
	int			bus_id;
	int			irq;

	struct mipi_dsim_device *master;
	void			*platform_data;
};

/*
 * driver structure for mipi-dsi based lcd panel.
 *
 * this structure should be registered by lcd panel driver.
 * mipi-dsi driver seeks lcd panel registered through name field
 * and calls these callback functions in appropriate time.
 *
 * @name: name of the driver to use with this device, or an
 *	alias for that name.
 * @id: id of driver to be registered.
 *	this id would be used for finding device object registered.
 */
struct mipi_dsim_lcd_driver {
	char			*name;
	int			id;

	void	(*power_on)(struct mipi_dsim_lcd_device *dsim_dev, int enable);
	void	(*set_sequence)(struct mipi_dsim_lcd_device *dsim_dev);
	int	(*probe)(struct mipi_dsim_lcd_device *dsim_dev);
	int	(*remove)(struct mipi_dsim_lcd_device *dsim_dev);
	void	(*shutdown)(struct mipi_dsim_lcd_device *dsim_dev);
	int	(*suspend)(struct mipi_dsim_lcd_device *dsim_dev);
	int	(*resume)(struct mipi_dsim_lcd_device *dsim_dev);
};

/*
 * register mipi_dsim_lcd_device to mipi-dsi master.
 */
int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device
						*lcd_dev);
/**
 * register mipi_dsim_lcd_driver object defined by lcd panel driver
 * to mipi-dsi driver.
 */
int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver
						*lcd_drv);
#endif /* _EXYNOS_MIPI_DSIM_H */
OpenPOWER on IntegriCloud