path: root/drivers/media/video/saa7114.c

/*
 * saa7114 - Philips SAA7114H video decoder driver version 0.0.1
 *
 * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
 *
 * Based on saa7111 driver by Dave Perks
 *
 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
 *
 * Slight changes for video timing and attachment output by
 * Wolfgang Scherr <scherr@net4you.net>
 *
 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
 *    - moved over to linux>=2.4.x i2c protocol (1/1/2003)
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev.h>
#include <linux/video_decoder.h>
#include <media/v4l2-common.h>
#include <media/v4l2-i2c-drv-legacy.h>

MODULE_DESCRIPTION("Philips SAA7114H video decoder driver");
MODULE_AUTHOR("Maxim Yevtyushkin");
MODULE_LICENSE("GPL");

static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");

/* ----------------------------------------------------------------------- */

struct saa7114 {
	unsigned char reg[0xf0 * 2];

	int norm;
	int input;
	int enable;
	int bright;
	int contrast;
	int hue;
	int sat;
	int playback;
};

#define   I2C_DELAY   10


//#define SAA_7114_NTSC_HSYNC_START       (-3)
//#define SAA_7114_NTSC_HSYNC_STOP        (-18)

#define SAA_7114_NTSC_HSYNC_START  (-17)
#define SAA_7114_NTSC_HSYNC_STOP   (-32)

//#define SAA_7114_NTSC_HOFFSET           (5)
#define SAA_7114_NTSC_HOFFSET		(6)
#define SAA_7114_NTSC_VOFFSET           (10)
#define SAA_7114_NTSC_WIDTH             (720)
#define SAA_7114_NTSC_HEIGHT            (250)

#define SAA_7114_SECAM_HSYNC_START      (-17)
#define SAA_7114_SECAM_HSYNC_STOP       (-32)

#define SAA_7114_SECAM_HOFFSET          (2)
#define SAA_7114_SECAM_VOFFSET          (10)
#define SAA_7114_SECAM_WIDTH            (720)
#define SAA_7114_SECAM_HEIGHT           (300)

#define SAA_7114_PAL_HSYNC_START        (-17)
#define SAA_7114_PAL_HSYNC_STOP         (-32)

#define SAA_7114_PAL_HOFFSET            (2)
#define SAA_7114_PAL_VOFFSET            (10)
#define SAA_7114_PAL_WIDTH              (720)
#define SAA_7114_PAL_HEIGHT             (300)



#define SAA_7114_VERTICAL_CHROMA_OFFSET         0	//0x50504040
#define SAA_7114_VERTICAL_LUMA_OFFSET           0

#define REG_ADDR(x) (((x) << 1) + 1)
#define LOBYTE(x) ((unsigned char)((x) & 0xff))
#define HIBYTE(x) ((unsigned char)(((x) >> 8) & 0xff))
#define LOWORD(x) ((unsigned short int)((x) & 0xffff))
#define HIWORD(x) ((unsigned short int)(((x) >> 16) & 0xffff))


/* ----------------------------------------------------------------------- */

static inline int saa7114_write(struct i2c_client *client, u8 reg, u8 value)
{
	return i2c_smbus_write_byte_data(client, reg, value);
}

static int saa7114_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
{
	int ret = -1;
	u8 reg;

	/* the saa7114 has an autoincrement function, use it if
	 * the adapter understands raw I2C */
	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		/* do raw I2C, not smbus compatible */
		u8 block_data[32];
		int block_len;

		while (len >= 2) {
			block_len = 0;
			block_data[block_len++] = reg = data[0];
			do {
				block_data[block_len++] = data[1];
				reg++;
				len -= 2;
				data += 2;
			} while (len >= 2 && data[0] == reg && block_len < 32);
			ret = i2c_master_send(client, block_data, block_len);
			if (ret < 0)
				break;
		}
	} else {
		/* do some slow I2C emulation kind of thing */
		while (len >= 2) {
			reg = *data++;
			ret = saa7114_write(client, reg, *data++);
			if (ret < 0)
				break;
			len -= 2;
		}
	}

	return ret;
}

static inline int saa7114_read(struct i2c_client *client, u8 reg)
{
	return i2c_smbus_read_byte_data(client, reg);
}

/* ----------------------------------------------------------------------- */

// initially set NTSC, composite


static const unsigned char init[] = {
	0x00, 0x00,		/* 00 - ID byte , chip version,
				 * read only */
	0x01, 0x08,		/* 01 - X,X,X,X, IDEL3 to IDEL0 -
				 * horizontal increment delay,
				 * recommended position */
	0x02, 0x00,		/* 02 - FUSE=3, GUDL=2, MODE=0 ;
				 * input control */
	0x03, 0x10,		/* 03 - HLNRS=0, VBSL=1, WPOFF=0,
				 * HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */
	0x04, 0x90,		/* 04 - GAI1=256 */
	0x05, 0x90,		/* 05 - GAI2=256 */
	0x06, SAA_7114_NTSC_HSYNC_START,	/* 06 - HSB: hsync start,
				 * depends on the video standard */
	0x07, SAA_7114_NTSC_HSYNC_STOP,	/* 07 - HSS: hsync stop, depends
				 *on the video standard */
	0x08, 0xb8,		/* 08 - AUFD=1, FSEL=1, EXFIL=0, VTRC=1,
				 * HPLL: free running in playback, locked
				 * in capture, VNOI=0 */
	0x09, 0x80,		</