summaryrefslogtreecommitdiffstats
path: root/drivers/media/video/omap3isp/ispccdc.h
blob: 890f6b3a68fd04530bcdd28380f144e0539e1a12 (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
/*
 * ispccdc.h
 *
 * TI OMAP3 ISP - CCDC module
 *
 * Copyright (C) 2009-2010 Nokia Corporation
 * Copyright (C) 2009 Texas Instruments, Inc.
 *
 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 *	     Sakari Ailus <sakari.ailus@iki.fi>
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 */

#ifndef OMAP3_ISP_CCDC_H
#define OMAP3_ISP_CCDC_H

#include <linux/omap3isp.h>
#include <linux/workqueue.h>

#include "ispvideo.h"

enum ccdc_input_entity {
	CCDC_INPUT_NONE,
	CCDC_INPUT_PARALLEL,
	CCDC_INPUT_CSI2A,
	CCDC_INPUT_CCP2B,
	CCDC_INPUT_CSI2C
};

#define CCDC_OUTPUT_MEMORY	(1 << 0)
#define CCDC_OUTPUT_PREVIEW	(1 << 1)
#define CCDC_OUTPUT_RESIZER	(1 << 2)

#define	OMAP3ISP_CCDC_NEVENTS	16

/*
 * struct ispccdc_syncif - Structure for Sync Interface between sensor and CCDC
 * @ccdc_mastermode: Master mode. 1 - Master, 0 - Slave.
 * @fldstat: Field state. 0 - Odd Field, 1 - Even Field.
 * @datsz: Data size.
 * @fldmode: 0 - Progressive, 1 - Interlaced.
 * @datapol: 0 - Positive, 1 - Negative.
 * @fldpol: 0 - Positive, 1 - Negative.
 * @hdpol: 0 - Positive, 1 - Negative.
 * @vdpol: 0 - Positive, 1 - Negative.
 * @fldout: 0 - Input, 1 - Output.
 * @hs_width: Width of the Horizontal Sync pulse, used for HS/VS Output.
 * @vs_width: Width of the Vertical Sync pulse, used for HS/VS Output.
 * @ppln: Number of pixels per line, used for HS/VS Output.
 * @hlprf: Number of half lines per frame, used for HS/VS Output.
 * @bt_r656_en: 1 - Enable ITU-R BT656 mode, 0 - Sync mode.
 */
struct ispccdc_syncif {
	u8 ccdc_mastermode;
	u8 fldstat;
	u8 datsz;
	u8 fldmode;
	u8 datapol;
	u8 fldpol;
	u8 hdpol;
	u8 vdpol;
	u8 fldout;
	u8 hs_width;
	u8 vs_width;
	u8 ppln;
	u8 hlprf;
	u8 bt_r656_en;
};

enum ispccdc_lsc_state {
	LSC_STATE_STOPPED = 0,
	LSC_STATE_STOPPING = 1,
	LSC_STATE_RUNNING = 2,
	LSC_STATE_RECONFIG = 3,
};

struct ispccdc_lsc_config_req {
	struct list_head list;
	struct omap3isp_ccdc_lsc_config config;
	unsigned char enable;
	u32 table;
	struct iovm_struct *iovm;
};

/*
 * ispccdc_lsc - CCDC LSC parameters
 * @update_config: Set when user changes config
 * @request_enable: Whether LSC is requested to be enabled
 * @config: LSC config set by user
 * @update_table: Set when user provides a new LSC table to table_new
 * @table_new: LSC table set by user, ISP address
 * @table_inuse: LSC table currently in use, ISP address
 */
struct ispccdc_lsc {
	enum ispccdc_lsc_state state;
	struct work_struct table_work;

	/* LSC queue of configurations */
	spinlock_t req_lock;
	struct ispccdc_lsc_config_req *request;	/* requested configuration */
	struct ispccdc_lsc_config_req *active;	/* active configuration */
	struct list_head free_queue;	/* configurations for freeing */
};

#define CCDC_STOP_NOT_REQUESTED		0x00
#define CCDC_STOP_REQUEST		0x01
#define CCDC_STOP_EXECUTED		(0x02 | CCDC_STOP_REQUEST)
#define CCDC_STOP_CCDC_FINISHED		0x04
#define CCDC_STOP_LSC_FINISHED		0x08
#define CCDC_STOP_FINISHED		\
	(CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)

#define CCDC_EVENT_VD1			0x10
#define CCDC_EVENT_VD0			0x20
#define CCDC_EVENT_LSC_DONE		0x40

/* Sink and source CCDC pads */
#define CCDC_PAD_SINK			0
#define CCDC_PAD_SOURCE_OF		1
#define CCDC_PAD_SOURCE_VP		2
#define CCDC_PADS_NUM			3

/*
 * struct isp_ccdc_device - Structure for the CCDC module to store its own
 *			    information
 * @subdev: V4L2 subdevice
 * @pads: Sink and source media entity pads
 * @formats: Active video formats
 * @crop: Active crop rectangle on the OF source pad
 * @input: Active input
 * @output: Active outputs
 * @video_out: Output video node
 * @alaw: A-law compression enabled (1) or disabled (0)
 * @lpf: Low pass filter enabled (1) or disabled (0)
 * @obclamp: Optical-black clamp enabled (1) or disabled (0)
 * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
 * @blcomp: Black level compensation configuration
 * @clamp: Optical-black or digital clamp configuration
 * @fpc: Faulty pixels correction configuration
 * @lsc: Lens shading compensation configuration
 * @update: Bitmask of controls to update during the next interrupt
 * @shadow_update: Controls update in progress by userspace
 * @syncif: Interface synchronization configuration
 * @underrun: A buffer underrun occurred and a new buffer has been queued
 * @state: Streaming state
 * @lock: Serializes shadow_update with interrupt handler
 * @wait: Wait queue used to stop the module
 * @stopping: Stopping state
 * @ioctl_lock: Serializes ioctl calls and LSC requests freeing
 */
struct isp_ccdc_device {
	struct v4l2_subdev subdev;
	struct media_pad pads[CCDC_PADS_NUM];
	struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM];
	struct v4l2_rect crop;

	enum ccdc_input_entity input;
	unsigned int output;
	struct isp_video video_out;

	unsigned int alaw:1,
		     lpf:1,
		     obclamp:1,
		     fpc_en:1;
	struct omap3isp_ccdc_blcomp blcomp;
	struct omap3isp_ccdc_bclamp clamp;
	struct omap3isp_ccdc_fpc fpc;
	struct ispccdc_lsc lsc;
	unsigned int update;
	unsigned int shadow_update;

	struct ispccdc_syncif syncif;

	unsigned int underrun:1;
	enum isp_pipeline_stream_state state;
	spinlock_t lock;
	wait_queue_head_t wait;
	unsigned int stopping;
	struct mutex ioctl_lock;
};

struct isp_device;

int omap3isp_ccdc_init(struct isp_device *isp);
void omap3isp_ccdc_cleanup(struct isp_device *isp);
int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
	struct v4l2_device *vdev);
void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc);

int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc);
int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events);
void omap3isp_ccdc_restore_context(struct isp_device *isp);
void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
	unsigned int *max_rate);

#endif	/* OMAP3_ISP_CCDC_H */