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/init.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/major.h>

#include <linux/slab.h>

#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/sched.h>
#include <asm/segment.h>
#include <linux/types.h>

#include <linux/videodev.h>
#include <asm/uaccess.h>

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

#include <linux/i2c.h>
#include <linux/i2c-dev.h>

#define I2C_NAME(x) (x)->name

#include <linux/video_decoder.h>

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

#define dprintk(num, format, args...) \
	do { \
		if (debug >= num) \
			printk(format, ##args); \
	} while (0)

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

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_SAA7114        0x42
#define   I2C_SAA7114A       0x40

#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)
{
	/*struct saa7114 *decoder = i2c_get_clientdata(client);*/

	/*decoder->reg[reg] = 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 */
		/*struct saa7114 *decoder = i2c_get_clientdata(client);*/
		struct i2c_msg msg;
		u8 block_data[32];

		msg.addr = client->addr;
		msg.flags = 0;
		while (len >= 2) {
			msg.buf = (char *) block_data;