em28xx.h

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/*
   em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices

   Copyright (C) 2005 Markus Rechberger <[e-mail]>
		      Ludovico Cavedon <[e-mail]>
		      Mauro Carvalho Chehab <[e-mail]>

   Based on the em2800 driver from Sascha Sommer <[e-mail]>

   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 _EM28XX_H
#define _EM28XX_H

#include "compat.h"
#include <linux/videodev2.h>
#include <media/videobuf-vmalloc.h>

#include <linux/i2c.h>
#include <linux/mutex.h>
#include <media/ir-kbd-i2c.h>
#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
#include <media/videobuf-dvb.h>
#endif
#include "tuner-xc2028.h"
#include "em28xx-reg.h"

/* Boards supported by driver */
#define EM2800_BOARD_UNKNOWN			0
#define EM2820_BOARD_UNKNOWN			1
#define EM2820_BOARD_TERRATEC_CINERGY_250	2
#define EM2820_BOARD_PINNACLE_USB_2		3
#define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2      4
#define EM2820_BOARD_MSI_VOX_USB_2              5
#define EM2800_BOARD_TERRATEC_CINERGY_200       6
#define EM2800_BOARD_LEADTEK_WINFAST_USBII      7
#define EM2800_BOARD_KWORLD_USB2800             8
#define EM2820_BOARD_PINNACLE_DVC_90		9
#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900	10
#define EM2880_BOARD_TERRATEC_HYBRID_XS		11
#define EM2820_BOARD_KWORLD_PVRTV2800RF		12
#define EM2880_BOARD_TERRATEC_PRODIGY_XS	13
#define EM2820_BOARD_PROLINK_PLAYTV_USB2	14
#define EM2800_BOARD_VGEAR_POCKETTV             15
#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950	16
#define EM2880_BOARD_PINNACLE_PCTV_HD_PRO	17
#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2	18
#define EM2860_BOARD_POINTNIX_INTRAORAL_CAMERA  19
#define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600   20
#define EM2800_BOARD_GRABBEEX_USB2800           21
#define EM2750_BOARD_UNKNOWN			  22
#define EM2750_BOARD_DLCW_130			  23
#define EM2820_BOARD_DLINK_USB_TV		  24
#define EM2820_BOARD_GADMEI_UTV310		  25
#define EM2820_BOARD_HERCULES_SMART_TV_USB2	  26
#define EM2820_BOARD_PINNACLE_USB_2_FM1216ME	  27
#define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
#define EM2820_BOARD_PINNACLE_DVC_100		  29
#define EM2820_BOARD_VIDEOLOGY_20K14XUSB	  30
#define EM2821_BOARD_USBGEAR_VD204		  31
#define EM2821_BOARD_SUPERCOMP_USB_2		  32
#define EM2821_BOARD_PROLINK_PLAYTV_USB2	  33
#define EM2860_BOARD_TERRATEC_HYBRID_XS		  34
#define EM2860_BOARD_TYPHOON_DVD_MAKER		  35
#define EM2860_BOARD_NETGMBH_CAM		  36
#define EM2860_BOARD_GADMEI_UTV330		  37
#define EM2861_BOARD_YAKUMO_MOVIE_MIXER		  38
#define EM2861_BOARD_KWORLD_PVRTV_300U		  39
#define EM2861_BOARD_PLEXTOR_PX_TV100U		  40
#define EM2870_BOARD_KWORLD_350U		  41
#define EM2870_BOARD_KWORLD_355U		  42
#define EM2870_BOARD_TERRATEC_XS		  43
#define EM2870_BOARD_TERRATEC_XS_MT2060		  44
#define EM2870_BOARD_PINNACLE_PCTV_DVB		  45
#define EM2870_BOARD_COMPRO_VIDEOMATE		  46
#define EM2880_BOARD_KWORLD_DVB_305U		  47
#define EM2880_BOARD_KWORLD_DVB_310U		  48
#define EM2880_BOARD_MSI_DIGIVOX_AD		  49
#define EM2880_BOARD_MSI_DIGIVOX_AD_II		  50
#define EM2880_BOARD_TERRATEC_HYBRID_XS_FR	  51
#define EM2881_BOARD_DNT_DA2_HYBRID		  52
#define EM2881_BOARD_PINNACLE_HYBRID_PRO	  53
#define EM2882_BOARD_KWORLD_VS_DVBT		  54
#define EM2882_BOARD_TERRATEC_HYBRID_XS		  55
#define EM2882_BOARD_PINNACLE_HYBRID_PRO	  56
#define EM2883_BOARD_KWORLD_HYBRID_A316		  57
#define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU	  58

/* Limits minimum and default number of buffers */
#define EM28XX_MIN_BUF 4
#define EM28XX_DEF_BUF 8

/* Params for validated field */
#define EM28XX_BOARD_NOT_VALIDATED 1
#define EM28XX_BOARD_VALIDATED	   0

/* maximum number of em28xx boards */
#define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */

/* maximum number of frames that can be queued */
#define EM28XX_NUM_FRAMES 5
/* number of frames that get used for v4l2_read() */
#define EM28XX_NUM_READ_FRAMES 2

/* number of buffers for isoc transfers */
#define EM28XX_NUM_BUFS 5

/* 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 EM28XX_NUM_PACKETS 40

/* default alternate; 0 means choose the best */
#define EM28XX_PINOUT 0

#define EM28XX_INTERLACED_DEFAULT 1

/*
#define (use usbview if you want to get the other alternate number infos)
#define
#define alternate number 2
#define 			Endpoint Address: 82
			Direction: in
			Attribute: 1
			Type: Isoc
			Max Packet Size: 1448
			Interval: 125us

  alternate number 7

			Endpoint Address: 82
			Direction: in
			Attribute: 1
			Type: Isoc
			Max Packet Size: 3072
			Interval: 125us
*/

/* time to wait when stopping the isoc transfer */
#define EM28XX_URB_TIMEOUT       msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)

/* time in msecs to wait for i2c writes to finish */
#define EM2800_I2C_WRITE_TIMEOUT 20

enum em28xx_mode {
	EM28XX_MODE_UNDEFINED,
	EM28XX_ANALOG_MODE,
	EM28XX_DIGITAL_MODE,
};

enum em28xx_stream_state {
	STREAM_OFF,
	STREAM_INTERRUPT,
	STREAM_ON,
};

struct em28xx;

struct em28xx_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 em28xx_buffer    	*buf;

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

		/* isoc urb callback */
	int (*isoc_copy) (struct em28xx *dev, struct urb *urb);

};

struct em28xx_fmt {
	char  *name;
	u32   fourcc;          /* v4l2 format id */
};

/* buffer for one video frame */
struct em28xx_buffer {
	/* common v4l buffer stuff -- must be first */
	struct videobuf_buffer vb;

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

struct em28xx_dmaqueue {
	struct list_head       active;
	struct list_head       queued;

	wait_queue_head_t          wq;

	/* Counters to control buffer fill */
	int                        pos;
};

/* io methods */
enum em28xx_io_method {
	IO_NONE,
	IO_READ,
	IO_MMAP,
};

/* inputs */

#define MAX_EM28XX_INPUT 4
enum enum28xx_itype {
	EM28XX_VMUX_COMPOSITE1 = 1,
	EM28XX_VMUX_COMPOSITE2,
	EM28XX_VMUX_COMPOSITE3,
	EM28XX_VMUX_COMPOSITE4,
	EM28XX_VMUX_SVIDEO,
	EM28XX_VMUX_TELEVISION,
	EM28XX_VMUX_CABLE,
	EM28XX_VMUX_DVB,
	EM28XX_VMUX_DEBUG,
	EM28XX_RADIO,
};

enum em28xx_amux {
	EM28XX_AMUX_VIDEO,
	EM28XX_AMUX_LINE_IN,
	EM28XX_AMUX_AC97_VIDEO,
	EM28XX_AMUX_AC97_LINE_IN,
};

struct em28xx_input {
	enum enum28xx_itype type;
	unsigned int vmux;
	enum em28xx_amux amux;
};

#define INPUT(nr) (&em28xx_boards[dev->model].input[nr])

enum em28xx_decoder {
	EM28XX_TVP5150,
	EM28XX_SAA7113,
	EM28XX_SAA7114
};

struct em28xx_reg_seq {
	int reg;
	unsigned char val, mask;
	int sleep;
};

struct em28xx_board {
	char *name;
	int vchannels;
	int tuner_type;

	/* i2c flags */
	unsigned int tda9887_conf;

	unsigned int is_em2800:1;
	unsigned int has_msp34xx:1;
	unsigned int mts_firmware:1;
	unsigned int has_12mhz_i2s:1;
	unsigned int max_range_640_480:1;
	unsigned int has_dvb:1;
	unsigned int has_snapshot_button:1;
	unsigned int valid:1;

	enum em28xx_decoder decoder;

	struct em28xx_input       input[MAX_EM28XX_INPUT];
	struct em28xx_input	  radio;
};

struct em28xx_eeprom {
	u32 id;			/* 0x9567eb1a */
	u16 vendor_ID;
	u16 product_ID;

	u16 chip_conf;

	u16 board_conf;

	u16 string1, string2, string3;

	u8 string_idx_table;
};

/* device states */
enum em28xx_dev_state {
	DEV_INITIALIZED = 0x01,
	DEV_DISCONNECTED = 0x02,
	DEV_MISCONFIGURED = 0x04,
};

#define EM28XX_AUDIO_BUFS 5
#define EM28XX_NUM_AUDIO_PACKETS 64
#define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
#define EM28XX_CAPTURE_STREAM_EN 1