summaryrefslogtreecommitdiffstats
path: root/drivers/media/video/cx231xx/cx231xx.h
blob: 17d4d1a800ce010732ffa641cee0101afe7a0f36 (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
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
/*
   cx231xx.h - driver for Conexant Cx23100/101/102 USB video capture devices

   Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
	Based on em28xx driver

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _CX231XX_H
#define _CX231XX_H

#include <linux/videodev2.h>
#include <linux/types.h>
#include <linux/ioctl.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/mutex.h>


#include <media/videobuf-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/ir-kbd-i2c.h>
#if defined(CONFIG_VIDEO_CX231XX_DVB) || \
	defined(CONFIG_VIDEO_CX231XX_DVB_MODULE)
#include <media/videobuf-dvb.h>
#endif

#include "cx231xx-reg.h"
#include "cx231xx-pcb-cfg.h"
#include "cx231xx-conf-reg.h"

#define DRIVER_NAME                     "cx231xx"
#define PWR_SLEEP_INTERVAL              5

/* I2C addresses for control block in Cx231xx */
#define     AFE_DEVICE_ADDRESS		0x60
#define     I2S_BLK_DEVICE_ADDRESS	0x98
#define     VID_BLK_I2C_ADDRESS		0x88
#define     DIF_USE_BASEBAND            0xFFFFFFFF

/* Boards supported by driver */
#define CX231XX_BOARD_UNKNOWN		    0
#define CX231XX_BOARD_CNXT_RDE_250     	1
#define CX231XX_BOARD_CNXT_RDU_250     	2

/* Limits minimum and default number of buffers */
#define CX231XX_MIN_BUF                 4
#define CX231XX_DEF_BUF                 12
#define CX231XX_DEF_VBI_BUF             6

#define VBI_LINE_COUNT                  17
#define VBI_LINE_LENGTH                 1440

/*Limits the max URB message size */
#define URB_MAX_CTRL_SIZE               80

/* Params for validated field */
#define CX231XX_BOARD_NOT_VALIDATED     1
#define CX231XX_BOARD_VALIDATED		0

/* maximum number of cx231xx boards */
#define CX231XX_MAXBOARDS               8

/* maximum number of frames that can be queued */
#define CX231XX_NUM_FRAMES              5

/* number of buffers for isoc transfers */
#define CX231XX_NUM_BUFS                8

/* number of packets for each buffer
   windows requests only 40 packets .. so we better do the same
   this is what I found out for all alternate numbers there!
 */
#define CX231XX_NUM_PACKETS             40

/* default alternate; 0 means choose the best */
#define CX231XX_PINOUT                  0

#define CX231XX_INTERLACED_DEFAULT      1

/* time to wait when stopping the isoc transfer */
#define CX231XX_URB_TIMEOUT		\
		msecs_to_jiffies(CX231XX_NUM_BUFS * CX231XX_NUM_PACKETS)

enum cx231xx_mode {
	CX231XX_SUSPEND,
	CX231XX_ANALOG_MODE,
	CX231XX_DIGITAL_MODE,
};

enum cx231xx_std_mode {
	CX231XX_TV_AIR = 0,
	CX231XX_TV_CABLE
};

enum cx231xx_stream_state {
	STREAM_OFF,
	STREAM_INTERRUPT,
	STREAM_ON,
};

struct cx231xx;

struct cx231xx_usb_isoc_ctl {
	/* max packet size of isoc transaction */
	int max_pkt_size;

	/* number of allocated urbs */
	int num_bufs;

	/* urb for isoc transfers */
	struct urb **urb;

	/* transfer buffers for isoc transfer */
	char **transfer_buffer;

	/* Last buffer command and region */
	u8 cmd;
	int pos, size, pktsize;

	/* Last field: ODD or EVEN? */
	int field;

	/* Stores incomplete commands */
	u32 tmp_buf;
	int tmp_buf_len;

	/* Stores already requested buffers */
	struct cx231xx_buffer *buf;

	/* Stores the number of received fields */
	int nfields;

	/* isoc urb callback */
	int (*isoc_copy) (struct cx231xx *dev, struct urb *urb);
};

struct cx231xx_fmt {
	char *name;
	u32 fourcc;		/* v4l2 format id */
	int depth;
	int reg;
};

/* buffer for one video frame */
struct cx231xx_buffer {
	/* common v4l buffer stuff -- must be first */
	struct videobuf_buffer vb;

	struct list_head frame;
	int top_field;
	int receiving;
};

struct cx231xx_dmaqueue {
	struct list_head active;
	struct list_head queued;

	wait_queue_head_t wq;

	/* Counters to control buffer fill */
	int pos;
	u8 is_partial_line;
	u8 partial_buf[8];
	u8 last_sav;
	int current_field;
	u32 bytes_left_in_line;
	u32 lines_completed;
	u8 field1_done;
	u32 lines_per_field;
};

/* inputs */

#define MAX_CX231XX_INPUT               4

enum cx231xx_itype {
	CX231XX_VMUX_COMPOSITE1 = 1,
	CX231XX_VMUX_SVIDEO,
	CX231XX_VMUX_TELEVISION,
	CX231XX_VMUX_CABLE,
	CX231XX_RADIO,
	CX231XX_VMUX_DVB,
	CX231XX_VMUX_DEBUG
};

enum cx231xx_v_input {
	CX231XX_VIN_1_1 = 0x1,
	CX231XX_VIN_2_1,
	CX231XX_VIN_3_1,
	CX231XX_VIN_4_1,
	CX231XX_VIN_1_2 = 0x01,
	CX231XX_VIN_2_2,
	CX231XX_VIN_3_2,
	CX231XX_VIN_1_3 = 0x1,
	CX231XX_VIN_2_3,
	CX231XX_VIN_3_3,
};

/* cx231xx has two audio inputs: tuner and line in */
enum cx231xx_amux {
	/* This is the only entry for cx231xx tuner input */
	CX231XX_AMUX_VIDEO,	/* cx231xx tuner */
	CX231XX_AMUX_LINE_IN,	/* Line In */
};

struct cx231xx_reg_seq {
	unsigned char bit;
	unsigned char val;
	int sleep;
};

struct cx231xx_input {
	enum cx231xx_itype type;
	unsigned int vmux;
	enum cx231xx_amux amux;
	struct cx231xx_reg_seq *gpio;
};

#define INPUT(nr) (&cx231xx_boards[dev->model].input[nr])

enum cx231xx_decoder {
	CX231XX_NODECODER,
	CX231XX_AVDECODER
};

enum CX231XX_I2C_MASTER_PORT {
	I2C_0 = 0,
	I2C_1 = 1,
	I2C_2 = 2,
	I2C_3 = 3
};

struct cx231xx_board {
	char *name;
	int vchannels;
	int tuner_type;
	int tuner_addr;
	v4l2_std_id norm;	/* tv norm */

	/* demod related */
	int demod_addr;
	u8 demod_xfer_mode;	/* 0 - Serial; 1 - parallel */

	/* GPIO Pins */
	struct cx231xx_reg_seq *dvb_gpio;
	struct cx231xx_reg_seq *suspend_gpio;
	struct cx231xx_reg_seq *tuner_gpio;
	u8 tuner_sif_gpio;
	u8 tuner_scl_gpio;
	u8 tuner_sda_gpio;

	/* PIN ctrl */
	u32 ctl_pin_status_mask;
	u8 agc_analog_digital_select_gpio;
	u32 gpio_pin_status_mask;

	/* i2c masters */
	u8 tuner_i2c_master;
	u8 demod_i2c_master;

	unsigned int max_range_640_480:1;
	unsigned int has_dvb:1;
	unsigned int valid:1;

	unsigned char xclk, i2c_speed;

	enum cx231xx_decoder decoder;

	struct cx231xx_input input[MAX_CX231XX_INPUT];
	struct cx231xx_input radio;
	struct ir_scancode_table *ir_codes;
};

/* device states */
enum cx231xx_dev_state {
	DEV_INITIALIZED = 0x01,
	DEV_DISCONNECTED = 0x02,
	DEV_MISCONFIGURED = 0x04,
};

enum AFE_MODE {
	AFE_MODE_LOW_IF,
	AFE_MODE_BASEBAND,
	AFE_MODE_EU_HI_IF,
	AFE_MODE_US_HI_IF,
	AFE_MODE_JAPAN_HI_IF
};

enum AUDIO_INPUT {
	AUDIO_INPUT_MUTE,
	AUDIO_INPUT_LINE,
	AUDIO_INPUT_TUNER_TV,
	AUDIO_INPUT_SPDIF,
	AUDIO_INPUT_TUNER_FM
};

#define CX231XX_AUDIO_BUFS              5
#define CX231XX_NUM_AUDIO_PACKETS       64
#define CX231XX_CAPTURE_STREAM_EN       1
#define CX231XX_STOP_AUDIO              0
#define CX231XX_START_AUDIO             1

/* cx231xx extensions */
#define CX231XX_AUDIO                   0x10
#define CX231XX_DVB                     0x20

struct cx231xx_audio {
	char name[50];
	char *transfer_buffer[CX231XX_AUDIO_BUFS];
	struct urb *urb[CX231XX_AUDIO_BUFS];
	struct usb_device *udev;
	unsigned int capture_transfer_done;
	struct snd_pcm_substream *capture_pcm_substream;

	unsigned int hwptr_done_capture;
	struct snd_card *sndcard;

	int users, shutdown;
	enum cx231xx_stream_state capture_stream;
	spinlock_t slock;

	int alt;		/* alternate */
	int max_pkt_size;	/* max packet size of isoc transaction */
	int num_alt;		/* Number of alternative settings */
	unsigned int *alt_max_pkt_size;	/* array of wMaxPacketSize */
	u16 end_point_addr;
};

struct cx231xx;

struct cx231xx_fh {
	struct cx231xx *dev;
	unsigned int stream_on:1;	/* Locks streams */
	int radio;

	struct videobuf_queue vb_vidq;

	enum v4l2_buf_type type;
};

/*****************************************************************/
/* set/get i2c */
/* 00--1Mb/s, 01-400kb/s, 10--100kb/s, 11--5Mb/s */
#define I2C_SPEED_1M            0x0
#define I2C_SPEED_400K          0x1
#define I2C_SPEED_100K          0x2
#define I2C_SPEED_5M            0x3

/* 0-- STOP transaction */
#define I2C_STOP                0x0
/* 1-- do not transmit STOP at end of transaction */
#define I2C_NOSTOP              0x1
/* 1--alllow slave to insert clock wait states */
#define I2C_SYNC                0x1

struct cx231xx_i2c {
	struct cx231xx *dev;

	int nr;

	/* i2c i/o */
	struct i2c_adapter i2c_adap;
	struct i2c_algo_bit_data i2c_algo;
	struct i2c_client i2c_client;
	u32 i2c_rc;

	/* different settings for each bus */
	u8 i2c_period;
	u8 i2c_nostop;
	u8 i2c_reserve;
};

struct cx231xx_i2c_xfer_data {
	u8 dev_addr;
	u8 direction;		/* 1 - IN, 0 - OUT */
	u8 saddr_len;		/* sub address len */
	u16 saddr_dat;		/* sub addr data */
	u8 buf_size;		/* buffer size */
	u8 *p_buffer;		/* pointer to the buffer */
};

struct VENDOR_REQUEST_IN {
	u8 bRequest;
	u16 wValue;
	u16 wIndex;
	u16 wLength;
	u8 direction;
	u8 bData;
	u8 *pBuff;
};

struct cx231xx_ctrl {
	struct v4l2_queryctrl v;
	u32 off;
	u32 reg;
	u32 mask;
	u32 shift;
};

enum TRANSFER_TYPE {
	Raw_Video = 0,
	Audio,
	Vbi,			/* VANC */
	Sliced_cc,		/* HANC */
	TS1_serial_mode,
	TS2,
	TS1_parallel_mode
} ;

struct cx231xx_video_mode {
	/* Isoc control struct */
	struct cx231xx_dmaqueue vidq;
	struct cx231xx_usb_isoc_ctl isoc_ctl;
	spinlock_t slock;

	/* usb transfer */
	int alt;		/* alternate */
	int max_pkt_size;	/* max packet size of isoc transaction */
	int num_alt;		/* Number of alternative settings */
	unsigned int *alt_max_pkt_size;	/* array of wMaxPacketSize */
	u16 end_point_addr;
};

/* main device struct */
struct cx231xx {
	/* generic device properties */
	char name[30];		/* name (including minor) of the device */
	int model;		/* index in the device_data struct */
	int devno;		/* marks the number of this device */

	struct cx231xx_board board;

	unsigned int stream_on:1;	/* Locks streams */
	unsigned int vbi_stream_on:1;	/* Locks streams for VBI */
	unsigned int has_audio_class:1;
	unsigned int has_alsa_audio:1;

	struct cx231xx_fmt *format;

	struct v4l2_device v4l2_dev;
	struct v4l2_subdev *sd_cx25840;
	struct v4l2_subdev *sd_tuner;

	struct cx231xx_IR *ir;

	struct list_head devlist;

	int tuner_type;		/* type of the tuner */
	int tuner_addr;		/* tuner address */

	/* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
	struct cx231xx_i2c i2c_bus[3];
	unsigned int xc_fw_load_done:1;
	struct mutex gpio_i2c_lock;

	/* video for linux */
	int users;		/* user count for exclusive use */
	struct video_device *vdev;	/* video for linux device struct */
	v4l2_std_id norm;	/* selected tv norm */
	int ctl_freq;		/* selected frequency */
	unsigned int ctl_ainput;	/* selected audio input */
	int mute;
	int volume;

	/* frame properties */
	int width;		/* current frame width */
	int height;		/* current frame height */
	unsigned hscale;	/* horizontal scale factor (see datasheet) */
	unsigned vscale;	/* vertical scale factor (see datasheet) */
	int interlaced;		/* 1=interlace fileds, 0=just top fileds */

	struct cx231xx_audio adev;

	/* states */
	enum cx231xx_dev_state state;

	struct work_struct request_module_wk;

	/* locks */
	struct mutex lock;
	struct mutex ctrl_urb_lock;	/* protects urb_buf */
	struct list_head inqueue, outqueue;
	wait_queue_head_t open, wait_frame, wait_stream;
	struct video_device *vbi_dev;
	struct video_device *radio_dev;

	unsigned char eedata[256];

	struct cx231xx_video_mode video_mode;
	struct cx231xx_video_mode vbi_mode;
	struct cx231xx_video_mode sliced_cc_mode;
	struct cx231xx_video_mode ts1_mode;

	struct usb_device *udev;	/* the usb device */
	char urb_buf[URB_MAX_CTRL_SIZE];	/* urb control msg buffer */

	/* helper funcs that call usb_control_msg */
	int (*cx231xx_read_ctrl_reg) (struct cx231xx *dev, u8 req, u16 reg,
				      char *buf, int len);
	int (*cx231xx_write_ctrl_reg) (struct cx231xx *dev, u8 req, u16 reg,
				       char *buf, int len);
	int (*cx231xx_send_usb_command) (struct cx231xx_i2c *i2c_bus,
				struct cx231xx_i2c_xfer_data *req_data);
	int (*cx231xx_gpio_i2c_read) (struct cx231xx *dev, u8 dev_addr,
				      u8 *buf, u8 len);
	int (*cx231xx_gpio_i2c_write) (struct cx231xx *dev, u8 dev_addr,
				       u8 *buf, u8 len);

	int (*cx231xx_set_analog_freq) (struct cx231xx *dev, u32 freq);
	int (*cx231xx_reset_analog_tuner) (struct cx231xx *dev);

	enum cx231xx_mode mode;

	struct cx231xx_dvb *dvb;

	/* Cx231xx supported PCB config's */
	struct pcb_config current_pcb_config;
	u8 current_scenario_idx;
	u8 interface_count;
	u8 max_iad_interface_count;

	/* GPIO related register direction and values */
	u32 gpio_dir;
	u32 gpio_val;

	/* Power Modes */
	int power_mode;

	/* afe parameters */
	enum AFE_MODE afe_mode;
	u32 afe_ref_count;

	/* video related parameters */
	u32 video_input;
	u32 active_mode;
	u8 vbi_or_sliced_cc_mode;	/* 0 - vbi ; 1 - sliced cc mode */
	enum cx231xx_std_mode std_mode;	/* 0 - Air; 1 - cable */

};

#define cx25840_call(cx231xx, o, f, args...) \
	v4l2_subdev_call(cx231xx->sd_cx25840, o, f, ##args)
#define tuner_call(cx231xx, o, f, args...) \
	v4l2_subdev_call(cx231xx->sd_tuner, o, f, ##args)
#define call_all(dev, o, f, args...) \
	v4l2_device_call_until_err(&dev->v4l2_dev, 0, o, f, ##args)

struct cx231xx_ops {
	struct list_head next;
	char *name;
	int id;
	int (*init) (struct cx231xx *);
	int (*fini) (struct cx231xx *);
};

/* call back functions in dvb module */
int cx231xx_set_analog_freq(struct cx231xx *dev, u32 freq);
int cx231xx_reset_analog_tuner(struct cx231xx *dev);

/* Provided by cx231xx-i2c.c */
void cx231xx_do_i2c_scan(struct cx231xx *dev, struct i2c_client *c);
int cx231xx_i2c_register(struct cx231xx_i2c *bus);
int cx231xx_i2c_unregister(struct cx231xx_i2c *bus);

/* Internal block control functions */
int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr,
			  u16 saddr, u8 saddr_len, u32 *data, u8 data_len);
int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr,
			   u16 saddr, u8 saddr_len, u32 data, u8 data_len);
int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size,
			   u16 register_address, u8 bit_start, u8 bit_end,
			   u32 value);
int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
					u16 saddr, u32 mask, u32 value);
u32 cx231xx_set_field(u32 field_mask, u32 data);

/* afe related functions */
int cx231xx_afe_init_super_block(struct cx231xx *dev, u32 ref_count);
int cx231xx_afe_init_channels(struct cx231xx *dev);
int cx231xx_afe_setup_AFE_for_baseband(struct cx231xx *dev);
int cx231xx_afe_set_input_mux(struct cx231xx *dev, u32 input_mux);
int cx231xx_afe_set_mode(struct cx231xx *dev, enum AFE_MODE mode);
int cx231xx_afe_update_power_control(struct cx231xx *dev,
					enum AV_MODE avmode);
int cx231xx_afe_adjust_ref_count(struct cx231xx *dev, u32 video_input);

/* i2s block related functions */
int cx231xx_i2s_blk_initialize(struct cx231xx *dev);
int cx231xx_i2s_blk_update_power_control(struct cx231xx *dev,
					enum AV_MODE avmode);
int cx231xx_i2s_blk_set_audio_input(struct cx231xx *dev, u8 audio_input);

/* DIF related functions */
int cx231xx_dif_configure_C2HH_for_low_IF(struct cx231xx *dev, u32 mode,
					  u32 function_mode, u32 standard);
int cx231xx_dif_set_standard(struct cx231xx *dev, u32 standard);
int cx231xx_tuner_pre_channel_change(struct cx231xx *dev);
int cx231xx_tuner_post_channel_change(struct cx231xx *dev);

/* video parser functions */
u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size,
			     u32 *p_bytes_used);
u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
				 u32 *p_bytes_used);
int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
		    u8 *p_buffer, u32 bytes_to_copy);
void cx231xx_reset_video_buffer(struct cx231xx *dev,
				struct cx231xx_dmaqueue *dma_q);
u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q);
u32 cx231xx_copy_video_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
			    u8 *p_line, u32 length, int field_number);
u32 cx231xx_get_video_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
			   u8 sav_eav, u8 *p_buffer, u32 buffer_size);
void cx231xx_swab(u16 *from, u16 *to, u16 len);

/* Provided by cx231xx-core.c */

u32 cx231xx_request_buffers(struct cx231xx *dev, u32 count);
void cx231xx_queue_unusedframes(struct cx231xx *dev);
void cx231xx_release_buffers(struct cx231xx *dev);

/* read from control pipe */
int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
			  char *buf, int len);

/* write to control pipe */
int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
			   char *buf, int len);
int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode);

int cx231xx_send_vendor_cmd(struct cx231xx *dev,
				struct VENDOR_REQUEST_IN *ven_req);
int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
				struct cx231xx_i2c_xfer_data *req_data);

/* Gpio related functions */
int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8 *gpio_val,
			  u8 len, u8 request, u8 direction);
int cx231xx_set_gpio_bit(struct cx231xx *dev, u32 gpio_bit, u8 *gpio_val);
int cx231xx_get_gpio_bit(struct cx231xx *dev, u32 gpio_bit, u8 *gpio_val);
int cx231xx_set_gpio_value(struct cx231xx *dev, int pin_number, int pin_value);
int cx231xx_set_gpio_direction(struct cx231xx *dev, int pin_number,
			       int pin_value);

int cx231xx_gpio_i2c_start(struct cx231xx *dev);
int cx231xx_gpio_i2c_end(struct cx231xx *dev);
int cx231xx_gpio_i2c_write_byte(struct cx231xx *dev, u8 data);
int cx231xx_gpio_i2c_read_byte(struct cx231xx *dev, u8 *buf);
int cx231xx_gpio_i2c_read_ack(struct cx231xx *dev);
int cx231xx_gpio_i2c_write_ack(struct cx231xx *dev);
int cx231xx_gpio_i2c_write_nak(struct cx231xx *dev);

int cx231xx_gpio_i2c_read(struct cx231xx *dev, u8 dev_addr, u8 *buf, u8 len);
int cx231xx_gpio_i2c_write(struct cx231xx *dev, u8 dev_addr, u8 *buf, u8 len);

/* audio related functions */
int cx231xx_set_audio_decoder_input(struct cx231xx *dev,
				    enum AUDIO_INPUT audio_input);

int cx231xx_capture_start(struct cx231xx *dev, int start, u8 media_type);
int cx231xx_resolution_set(struct cx231xx *dev);
int cx231xx_set_video_alternate(struct cx231xx *dev);
int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt);
int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
		      int num_bufs, int max_pkt_size,
		      int (*isoc_copy) (struct cx231xx *dev,
					struct urb *urb));
void cx231xx_uninit_isoc(struct cx231xx *dev);
int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode);
int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio);

/* Device list functions */
void cx231xx_release_resources(struct cx231xx *dev);
void cx231xx_release_analog_resources(struct cx231xx *dev);
int cx231xx_register_analog_devices(struct cx231xx *dev);
void cx231xx_remove_from_devlist(struct cx231xx *dev);
void cx231xx_add_into_devlist(struct cx231xx *dev);
void cx231xx_init_extension(struct cx231xx *dev);
void cx231xx_close_extension(struct cx231xx *dev);

/* hardware init functions */
int cx231xx_dev_init(struct cx231xx *dev);
void cx231xx_dev_uninit(struct cx231xx *dev);
void cx231xx_config_i2c(struct cx231xx *dev);
int cx231xx_config(struct cx231xx *dev);

/* Stream control functions */
int cx231xx_start_stream(struct cx231xx *dev, u32 ep_mask);
int cx231xx_stop_stream(struct cx231xx *dev, u32 ep_mask);

int cx231xx_initialize_stream_xfer(struct cx231xx *dev, u32 media_type);

/* Power control functions */
int cx231xx_set_power_mode(struct cx231xx *dev, enum AV_MODE mode);
int cx231xx_power_suspend(struct cx231xx *dev);

/* chip specific control functions */
int cx231xx_init_ctrl_pin_status(struct cx231xx *dev);
int cx231xx_set_agc_analog_digital_mux_select(struct cx231xx *dev,
					      u8 analog_or_digital);
int cx231xx_enable_i2c_for_tuner(struct cx231xx *dev, u8 I2CIndex);

/* video audio decoder related functions */
void video_mux(struct cx231xx *dev, int index);
int cx231xx_set_video_input_mux(struct cx231xx *dev, u8 input);
int cx231xx_set_decoder_video_input(struct cx231xx *dev, u8 pin_type, u8 input);
int cx231xx_do_mode_ctrl_overrides(struct cx231xx *dev);
int cx231xx_set_audio_input(struct cx231xx *dev, u8 input);

/* Provided by cx231xx-video.c */
int cx231xx_register_extension(struct cx231xx_ops *dev);
void cx231xx_unregister_extension(struct cx231xx_ops *dev);
void cx231xx_init_extension(struct cx231xx *dev);
void cx231xx_close_extension(struct cx231xx *dev);

/* Provided by cx231xx-cards.c */
extern void cx231xx_pre_card_setup(struct cx231xx *dev);
extern void cx231xx_card_setup(struct cx231xx *dev);
extern struct cx231xx_board cx231xx_boards[];
extern struct usb_device_id cx231xx_id_table[];
extern const unsigned int cx231xx_bcount;
void cx231xx_register_i2c_ir(struct cx231xx *dev);
int cx231xx_tuner_callback(void *ptr, int component, int command, int arg);

/* Provided by cx231xx-input.c */
int cx231xx_ir_init(struct cx231xx *dev);
int cx231xx_ir_fini(struct cx231xx *dev);

/* printk macros */

#define cx231xx_err(fmt, arg...) do {\
	printk(KERN_ERR fmt , ##arg); } while (0)

#define cx231xx_errdev(fmt, arg...) do {\
	printk(KERN_ERR "%s: "fmt,\
			dev->name , ##arg); } while (0)

#define cx231xx_info(fmt, arg...) do {\
	printk(KERN_INFO "%s: "fmt,\
			dev->name , ##arg); } while (0)
#define cx231xx_warn(fmt, arg...) do {\
	printk(KERN_WARNING "%s: "fmt,\
			dev->name , ##arg); } while (0)

static inline unsigned int norm_maxw(struct cx231xx *dev)
{
	if (dev->board.max_range_640_480)
		return 640;
	else
		return 720;
}

static inline unsigned int norm_maxh(struct cx231xx *dev)
{
	if (dev->board.max_range_640_480)
		return 480;
	else
		return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
}
#endif