[deliverable/linux.git] / drivers / media / video / bt819.c

/*
 *  bt819 - BT819A VideoStream Decoder (Rockwell Part)
 *
 * Copyright (C) 1999 Mike Bernson <mike@mlb.org>
 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
 *
 * Modifications for LML33/DC10plus unified driver
 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
 *
 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
 *    - moved over to linux>=2.4.x i2c protocol (9/9/2002)
 *
 * This code was modify/ported from the saa7111 driver written
 * by Dave Perks.
 *
 * 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 <linux/delay.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv.h>

MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
MODULE_AUTHOR("Mike Bernson & Dave Perks");
MODULE_LICENSE("GPL");

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


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

struct bt819 {
	struct v4l2_subdev sd;
	unsigned char reg[32];

	v4l2_std_id norm;
	int ident;
	int input;
	int enable;
	int bright;
	int contrast;
	int hue;
	int sat;
};

static inline struct bt819 *to_bt819(struct v4l2_subdev *sd)
{
	return container_of(sd, struct bt819, sd);
}

struct timing {
	int hactive;
	int hdelay;
	int vactive;
	int vdelay;
	int hscale;
	int vscale;
};

/* for values, see the bt819 datasheet */
static struct timing timing_data[] = {
	{864 - 24, 20, 625 - 2, 1, 0x0504, 0x0000},
	{858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000},
};

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

static inline int bt819_write(struct bt819 *decoder, u8 reg, u8 value)
{
	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);

	decoder->reg[reg] = value;
	return i2c_smbus_write_byte_data(client, reg, value);
}

static inline int bt819_setbit(struct bt819 *decoder, u8 reg, u8 bit, u8 value)
{
	return bt819_write(decoder, reg,
		(decoder->reg[reg] & ~(1 << bit)) | (value ? (1 << bit) : 0));
}

static int bt819_write_block(struct bt819 *decoder, const u8 *data, unsigned int len)
{
	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
	int ret = -1;
	u8 reg;

	/* the bt819 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++] =
				    decoder->reg[reg++] = data[1];
				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 = bt819_write(decoder, reg, *data++);
			if (ret < 0)
				break;
			len -= 2;
		}
	}

	return ret;
}

static inline int bt819_read(struct bt819 *decoder, u8 reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);

	return i2c_smbus_read_byte_data(client, reg);
}

static int bt819_init(struct v4l2_subdev *sd)
{
	static unsigned char init[] = {
		/*0x1f, 0x00,*/     /* Reset */
		0x01, 0x59,	/* 0x01 input format */
		0x02, 0x00,	/* 0x02 temporal decimation */
		0x03, 0x12,	/* 0x03 Cropping msb */
		0x04, 0x16,	/* 0x04 Vertical Delay, lsb */
		0x05, 0xe0,	/* 0x05 Vertical Active lsb */
		0x06, 0x80,	/* 0x06 Horizontal Delay lsb */
		0x07, 0xd0,	/* 0x07 Horizontal Active lsb */
		0x08, 0x00,	/* 0x08 Horizontal Scaling msb */
		0x09, 0xf8,	/* 0x09 Horizontal Scaling lsb */
		0x0a, 0x00,	/* 0x0a Brightness control */
		0x0b, 0x30,	/* 0x0b Miscellaneous control */
		0x0c, 0xd8,	/* 0x0c Luma Gain lsb */
		0x0d, 0xfe,	/* 0x0d Chroma Gain (U) lsb */
		0x0e, 0xb4,	/* 0x0e Chroma Gain (V) msb */
		0x0f, 0x00,	/* 0x0f Hue control */
		0x12, 0x04,	/* 0x12 Output Format */
		0x13, 0x20,	/* 0x13 Vertial Scaling msb 0x00
					   chroma comb OFF, line drop scaling, interlace scaling
					   BUG? Why does turning the chroma comb on fuck up color?
					   Bug in the bt819 stepping on my board?
					*/
		0x14, 0x00,	/* 0x14 Vertial Scaling lsb */
		0x16, 0x07,	/* 0x16 Video Timing Polarity
					   ACTIVE=active low
					   FIELD: high=odd,
					   vreset=active high,
					   hreset=active high */
		0x18, 0x68,	/* 0x18 AGC Delay */
		0x19, 0x5d,	/* 0x19 Burst Gate Delay */
		0x1a, 0x80,	/* 0x1a ADC Interface */
	};

	struct bt819 *decoder = to_bt819(sd);
	struct timing *timing = &timing_data[(decoder->norm & V4L2_STD_525_60) ? 1 : 0];

	init[0x03 * 2 - 1] =
	    (((timing->vdelay >> 8) & 0x03) << 6) |
	    (((timing->vactive >> 8) & 0x03) << 4) |
	    (((timing->hdelay >> 8) & 0x03) << 2) |
	    ((timing->hactive >> 8) & 0x03);
	init[0x04 * 2 - 1] = timing->vdelay & 0xff;
	init[0x05 * 2 - 1] = timing->vactive & 0xff;
	init[0x06 * 2 - 1] = timing->hdelay & 0xff;
	init[0x07 * 2 - 1] = timing->hactive & 0xff;
	init[0x08 * 2 - 1] = timing->hscale >> 8;
	init[0x09 * 2 - 1] = timing->hscale & 0xff;
	/* 0x15 in array is address 0x19 */
	init[0x15 * 2 - 1] = (decoder->norm & V4L2_STD_625_50) ? 115 : 93;	/* Chroma burst delay */
	/* reset */
	bt819_write(decoder, 0x1f, 0x00);
	mdelay(1);

	/* init */
	return bt819_write_block(decoder, init, sizeof(init));
}

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

static int bt819_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
{
	struct bt819 *decoder = to_bt819(sd);
	int status = bt819_read(decoder, 0x00);
	int res = V4L2_IN_ST_NO_SIGNAL;
	v4l2_std_id std;

	if ((status & 0x80))
		res = 0;

	if ((status & 0x10))
		std = V4L2_STD_PAL;
	else
		std = V4L2_STD_NTSC;
	if (pstd)
		*pstd = std;
	if (pstatus)
		*pstatus = status;

	v4l2_dbg(1, debug, sd, "get status %x\n", status);
	return 0;
}

static int bt819_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
	return bt819_status(sd, NULL, std);
}

static int bt819_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
	return bt819_status(sd, status, NULL);
}

static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
	struct bt819 *decoder = to_bt819(sd);
	struct timing *timing = NULL;

	v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);

	if (std & V4L2_STD_NTSC) {
		bt819_setbit(decoder, 0x01, 0, 1);
		bt819_setbit(decoder, 0x01, 1, 0);
		bt819_setbit(decoder, 0x01, 5, 0);
		bt819_write(decoder, 0x18, 0x68);
		bt819_write(decoder, 0x19, 0x5d);
		/* bt819_setbit(decoder, 0x1a,  5, 1); */
		timing = &timing_data[1];
	} else if (std & V4L2_STD_PAL) {
		bt819_setbit(decoder, 0x01, 0, 1);
		bt819_setbit(decoder, 0x01, 1, 1);
		bt819_setbit(decoder, 0x01, 5, 1);
		bt819_write(decoder, 0x18, 0x7f);
		bt819_write(decoder, 0x19, 0x72);
		/* bt819_setbit(decoder, 0x1a,  5, 0); */
		timing = &timing_data[0];
	} else {
		v4l2_dbg(1, debug, sd, "unsupported norm %llx\n",
				(unsigned long long)std);
		return -EINVAL;
	}
	bt819_write(decoder, 0x03,
			(((timing->vdelay >> 8) & 0x03) << 6) |
			(((timing->vactive >> 8) & 0x03) << 4) |
			(((timing->hdelay >> 8) & 0x03) << 2) |
			((timing->hactive >> 8) & 0x03));
	bt819_write(decoder, 0x04, timing->vdelay & 0xff);
	bt819_write(decoder, 0x05, timing->vactive & 0xff);
	bt819_write(decoder, 0x06, timing->hdelay & 0xff);
	bt819_write(decoder, 0x07, timing->hactive & 0xff);
	bt819_write(decoder, 0x08, (timing->hscale >> 8) & 0xff);
	bt819_write(decoder, 0x09, timing->hscale & 0xff);
	decoder->norm = std;
	return 0;
}

static int bt819_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
{
	struct bt819 *decoder = to_bt819(sd);

	v4l2_dbg(1, debug, sd, "set input %x\n", route->input);

	if (route->input < 0 || route->input > 7)
		return -EINVAL;

	if (decoder->input != route->input) {
		decoder->input = route->input;
		/* select mode */
		if (decoder->input == 0) {
			bt819_setbit(decoder, 0x0b, 6, 0);
			bt819_setbit(decoder, 0x1a, 1, 1);
		} else {
			bt819_setbit(decoder, 0x0b, 6, 1);
			bt819_setbit(decoder, 0x1a, 1, 0);
		}
	}
	return 0;
}

static int bt819_s_stream(struct v4l2_subdev *sd, int enable)
{
	struct bt819 *decoder = to_bt819(sd);

	v4l2_dbg(1, debug, sd, "enable output %x\n", enable);

	if (decoder->enable != enable) {
		decoder->enable = enable;
		bt819_setbit(decoder, 0x16, 7, !enable);
	}
	return 0;
}

static int bt819_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
	switch (qc->id) {
	case V4L2_CID_BRIGHTNESS:
		v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
		break;

	case V4L2_CID_CONTRAST:
		v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
		break;

	case V4L2_CID_SATURATION:
		v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
		break;

	case V4L2_CID_HUE:
		v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
		break;

	default:
		return -EINVAL;
	}
	return 0;
}

static int bt819_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct bt819 *decoder = to_bt819(sd);
	int temp;

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		if (decoder->bright == ctrl->value)
			break;
		decoder->bright = ctrl->value;
		bt819_write(decoder, 0x0a, decoder->bright);
		break;

	case V4L2_CID_CONTRAST:
		if (decoder->contrast == ctrl->value)
			break;
		decoder->contrast = ctrl->value;
		bt819_write(decoder, 0x0c, decoder->contrast & 0xff);
		bt819_setbit(decoder, 0x0b, 2, ((decoder->contrast >> 8) & 0x01));
		break;

	case V4L2_CID_SATURATION:
		if (decoder->sat == ctrl->value)
			break;
		decoder->sat = ctrl->value;
		bt819_write(decoder, 0x0d, (decoder->sat >> 7) & 0xff);
		bt819_setbit(decoder, 0x0b, 1, ((decoder->sat >> 15) & 0x01));

		/* Ratio between U gain and V gain must stay the same as
		   the ratio between the default U and V gain values. */
		temp = (decoder->sat * 180) / 254;
		bt819_write(decoder, 0x0e, (temp >> 7) & 0xff);
		bt819_setbit(decoder, 0x0b, 0, (temp >> 15) & 0x01);
		break;

	case V4L2_CID_HUE:
		if (decoder->hue == ctrl->value)
			break;
		decoder->hue = ctrl->value;
		bt819_write(decoder, 0x0f, decoder->hue);
		break;

	default:
		return -EINVAL;
	}
	return 0;
}

static int bt819_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct bt819 *decoder = to_bt819(sd);

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		ctrl->value = decoder->bright;
		break;
	case V4L2_CID_CONTRAST:
		ctrl->value = decoder->contrast;
		break;
	case V4L2_CID_SATURATION:
		ctrl->value = decoder->sat;
		break;
	case V4L2_CID_HUE:
		ctrl->value = decoder->hue;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int bt819_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
{
	struct bt819 *decoder = to_bt819(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	return v4l2_chip_ident_i2c_client(client, chip, decoder->ident, 0);
}

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

static const struct v4l2_subdev_core_ops bt819_core_ops = {
	.g_chip_ident = bt819_g_chip_ident,
	.g_ctrl = bt819_g_ctrl,
	.s_ctrl = bt819_s_ctrl,
	.queryctrl = bt819_queryctrl,
};

static const struct v4l2_subdev_tuner_ops bt819_tuner_ops = {
	.s_std = bt819_s_std,
};

static const struct v4l2_subdev_video_ops bt819_video_ops = {
	.s_routing = bt819_s_routing,
	.s_stream = bt819_s_stream,
	.querystd = bt819_querystd,
	.g_input_status = bt819_g_input_status,
};

static const struct v4l2_subdev_ops bt819_ops = {
	.core = &bt819_core_ops,
	.tuner = &bt819_tuner_ops,
	.video = &bt819_video_ops,
};

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

static int bt819_probe(struct i2c_client *client,
			const struct i2c_device_id *id)
{
	int i, ver;
	struct bt819 *decoder;
	struct v4l2_subdev *sd;
	const char *name;

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -ENODEV;

	decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL);
	if (decoder == NULL)
		return -ENOMEM;
	sd = &decoder->sd;
	v4l2_i2c_subdev_init(sd, client, &bt819_ops);

	ver = bt819_read(decoder, 0x17);
	switch (ver & 0xf0) {
	case 0x70:
		name = "bt819a";
		decoder->ident = V4L2_IDENT_BT819A;
		break;
	case 0x60:
		name = "bt817a";
		decoder->ident = V4L2_IDENT_BT817A;
		break;
	case 0x20:
		name = "bt815a";
		decoder->ident = V4L2_IDENT_BT815A;
		break;
	default:
		v4l2_dbg(1, debug, sd,
			"unknown chip version 0x%02x\n", ver);
		return -ENODEV;
	}

	v4l_info(client, "%s found @ 0x%x (%s)\n", name,
			client->addr << 1, client->adapter->name);

	decoder->norm = V4L2_STD_NTSC;
	decoder->input = 0;
	decoder->enable = 1;
	decoder->bright = 0;
	decoder->contrast = 0xd8;	/* 100% of original signal */
	decoder->hue = 0;
	decoder->sat = 0xfe;		/* 100% of original signal */

	i = bt819_init(sd);
	if (i < 0)
		v4l2_dbg(1, debug, sd, "init status %d\n", i);
	return 0;
}

static int bt819_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	v4l2_device_unregister_subdev(sd);
	kfree(to_bt819(sd));
	return 0;
}

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

static const struct i2c_device_id bt819_id[] = {
	{ "bt819a", 0 },
	{ "bt817a", 0 },
	{ "bt815a", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, bt819_id);

static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	.name = "bt819",
	.probe = bt819_probe,
	.remove = bt819_remove,
	.id_table = bt819_id,
};
Commit	Line	Data
d56410e0	1	/*
1da177e4 LT	2	* bt819 - BT819A VideoStream Decoder (Rockwell Part)
	3	*
	4	* Copyright (C) 1999 Mike Bernson <mike@mlb.org>
	5	* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
	6	*
	7	* Modifications for LML33/DC10plus unified driver
	8	* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
d56410e0	9	*
1da177e4 LT	10	* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
	11	* - moved over to linux>=2.4.x i2c protocol (9/9/2002)
	12	*
	13	* This code was modify/ported from the saa7111 driver written
	14	* by Dave Perks.
	15	*
	16	* This program is free software; you can redistribute it and/or modify
	17	* it under the terms of the GNU General Public License as published by
	18	* the Free Software Foundation; either version 2 of the License, or
	19	* (at your option) any later version.
	20	*
	21	* This program is distributed in the hope that it will be useful,
	22	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	23	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	24	* GNU General Public License for more details.
	25	*
	26	* You should have received a copy of the GNU General Public License
	27	* along with this program; if not, write to the Free Software
	28	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	29	*/
	30
	31	#include <linux/module.h>
18f3fa1e	32	#include <linux/types.h>
7fd011fb	33	#include <linux/ioctl.h>
2883913c	34	#include <linux/delay.h>
18f3fa1e	35	#include <asm/uaccess.h>
7fd011fb HV	36	#include <linux/i2c.h>
7fd011fb HV	37	#include <linux/i2c-id.h>
c2179ad8 HV	38	#include <linux/videodev2.h>
	39	#include <media/v4l2-device.h>
	40	#include <media/v4l2-chip-ident.h>
2d26698e	41	#include <media/v4l2-i2c-drv.h>
1da177e4 LT	42
	43	MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
	44	MODULE_AUTHOR("Mike Bernson & Dave Perks");
	45	MODULE_LICENSE("GPL");
	46
ff699e6b	47	static int debug;
1da177e4 LT	48	module_param(debug, int, 0);
	49	MODULE_PARM_DESC(debug, "Debug level (0-1)");
	50
c2179ad8	51
1da177e4 LT	52	/* ----------------------------------------------------------------------- */
	53
	54	struct bt819 {
c2179ad8	55	struct v4l2_subdev sd;
1da177e4 LT	56	unsigned char reg[32];
1da177e4 LT	57
107063c6	58	v4l2_std_id norm;
c2179ad8	59	int ident;
1da177e4 LT	60	int input;
	61	int enable;
	62	int bright;
	63	int contrast;
	64	int hue;
	65	int sat;
	66	};
	67
c2179ad8 HV	68	static inline struct bt819 to_bt819(struct v4l2_subdev sd)
	69	{
	70	return container_of(sd, struct bt819, sd);
	71	}
	72
1da177e4 LT	73	struct timing {
	74	int hactive;
	75	int hdelay;
	76	int vactive;
	77	int vdelay;
	78	int hscale;
	79	int vscale;
	80	};
	81
	82	/* for values, see the bt819 datasheet */
	83	static struct timing timing_data[] = {
	84	{864 - 24, 20, 625 - 2, 1, 0x0504, 0x0000},
	85	{858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000},
	86	};
	87
1da177e4 LT	88	/* ----------------------------------------------------------------------- */
1da177e4 LT	89
c2179ad8	90	static inline int bt819_write(struct bt819 *decoder, u8 reg, u8 value)
1da177e4	91	{
c2179ad8	92	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
1da177e4 LT	93
	94	decoder->reg[reg] = value;
	95	return i2c_smbus_write_byte_data(client, reg, value);
	96	}
	97
c2179ad8	98	static inline int bt819_setbit(struct bt819 *decoder, u8 reg, u8 bit, u8 value)
1da177e4	99	{
c2179ad8	100	return bt819_write(decoder, reg,
7fd011fb	101	(decoder->reg[reg] & ~(1 << bit)) \| (value ? (1 << bit) : 0));
1da177e4 LT	102	}
1da177e4 LT	103
c2179ad8	104	static int bt819_write_block(struct bt819 decoder, const u8 data, unsigned int len)
1da177e4	105	{
c2179ad8	106	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
1da177e4 LT	107	int ret = -1;
	108	u8 reg;
	109
	110	/* the bt819 has an autoincrement function, use it if
	111	* the adapter understands raw I2C */
	112	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
	113	/* do raw I2C, not smbus compatible */
1da177e4	114	u8 block_data[32];
9aa45e34	115	int block_len;
1da177e4	116
1da177e4	117	while (len >= 2) {
9aa45e34 JD	118	block_len = 0;
9aa45e34 JD	119	block_data[block_len++] = reg = data[0];
1da177e4	120	do {
9aa45e34	121	block_data[block_len++] =
1da177e4 LT	122	decoder->reg[reg++] = data[1];
	123	len -= 2;
	124	data += 2;
7fd011fb HV	125	} while (len >= 2 && data[0] == reg && block_len < 32);
	126	ret = i2c_master_send(client, block_data, block_len);
	127	if (ret < 0)
1da177e4 LT	128	break;
	129	}
	130	} else {
	131	/* do some slow I2C emulation kind of thing */
	132	while (len >= 2) {
	133	reg = *data++;
c2179ad8 HV	134	ret = bt819_write(decoder, reg, *data++);
c2179ad8 HV	135	if (ret < 0)
1da177e4 LT	136	break;
	137	len -= 2;
	138	}
	139	}
	140
	141	return ret;
	142	}
	143
c2179ad8	144	static inline int bt819_read(struct bt819 *decoder, u8 reg)
1da177e4	145	{
c2179ad8 HV	146	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
c2179ad8 HV	147
1da177e4 LT	148	return i2c_smbus_read_byte_data(client, reg);
	149	}
	150
c2179ad8	151	static int bt819_init(struct v4l2_subdev *sd)
1da177e4	152	{
1da177e4	153	static unsigned char init[] = {
7fd011fb	154	/0x1f, 0x00,/ /* Reset */
1da177e4 LT	155	0x01, 0x59, /* 0x01 input format */
	156	0x02, 0x00, /* 0x02 temporal decimation */
	157	0x03, 0x12, /* 0x03 Cropping msb */
	158	0x04, 0x16, /* 0x04 Vertical Delay, lsb */
	159	0x05, 0xe0, /* 0x05 Vertical Active lsb */
	160	0x06, 0x80, /* 0x06 Horizontal Delay lsb */
	161	0x07, 0xd0, /* 0x07 Horizontal Active lsb */
	162	0x08, 0x00, /* 0x08 Horizontal Scaling msb */
	163	0x09, 0xf8, /* 0x09 Horizontal Scaling lsb */
	164	0x0a, 0x00, /* 0x0a Brightness control */
	165	0x0b, 0x30, /* 0x0b Miscellaneous control */
	166	0x0c, 0xd8, /* 0x0c Luma Gain lsb */
	167	0x0d, 0xfe, /* 0x0d Chroma Gain (U) lsb */
	168	0x0e, 0xb4, /* 0x0e Chroma Gain (V) msb */
	169	0x0f, 0x00, /* 0x0f Hue control */
	170	0x12, 0x04, /* 0x12 Output Format */
	171	0x13, 0x20, /* 0x13 Vertial Scaling msb 0x00
	172	chroma comb OFF, line drop scaling, interlace scaling
	173	BUG? Why does turning the chroma comb on fuck up color?
	174	Bug in the bt819 stepping on my board?
	175	*/
	176	0x14, 0x00, /* 0x14 Vertial Scaling lsb */
d56410e0	177	0x16, 0x07, /* 0x16 Video Timing Polarity
1da177e4	178	ACTIVE=active low
d56410e0	179	FIELD: high=odd,
1da177e4 LT	180	vreset=active high,
	181	hreset=active high */
	182	0x18, 0x68, /* 0x18 AGC Delay */
	183	0x19, 0x5d, /* 0x19 Burst Gate Delay */
	184	0x1a, 0x80, /* 0x1a ADC Interface */
	185	};
	186
c2179ad8	187	struct bt819 *decoder = to_bt819(sd);
107063c6	188	struct timing *timing = &timing_data[(decoder->norm & V4L2_STD_525_60) ? 1 : 0];
1da177e4 LT	189
1da177e4 LT	190	init[0x03 * 2 - 1] =
7fd011fb HV	191	(((timing->vdelay >> 8) & 0x03) << 6) \|
	192	(((timing->vactive >> 8) & 0x03) << 4) \|
	193	(((timing->hdelay >> 8) & 0x03) << 2) \|
	194	((timing->hactive >> 8) & 0x03);
1da177e4 LT	195	init[0x04 * 2 - 1] = timing->vdelay & 0xff;
	196	init[0x05 * 2 - 1] = timing->vactive & 0xff;
	197	init[0x06 * 2 - 1] = timing->hdelay & 0xff;
	198	init[0x07 * 2 - 1] = timing->hactive & 0xff;
	199	init[0x08 * 2 - 1] = timing->hscale >> 8;
	200	init[0x09 * 2 - 1] = timing->hscale & 0xff;
	201	/* 0x15 in array is address 0x19 */
107063c6	202	init[0x15 * 2 - 1] = (decoder->norm & V4L2_STD_625_50) ? 115 : 93; /* Chroma burst delay */
1da177e4	203	/* reset */
c2179ad8	204	bt819_write(decoder, 0x1f, 0x00);
1da177e4 LT	205	mdelay(1);
	206
	207	/* init */
c2179ad8	208	return bt819_write_block(decoder, init, sizeof(init));
1da177e4 LT	209	}
	210
	211	/* ----------------------------------------------------------------------- */
	212
c2179ad8	213	static int bt819_status(struct v4l2_subdev sd, u32 pstatus, v4l2_std_id *pstd)
1da177e4	214	{
c2179ad8 HV	215	struct bt819 *decoder = to_bt819(sd);
	216	int status = bt819_read(decoder, 0x00);
	217	int res = V4L2_IN_ST_NO_SIGNAL;
	218	v4l2_std_id std;
	219
	220	if ((status & 0x80))
	221	res = 0;
	222
	223	if ((status & 0x10))
	224	std = V4L2_STD_PAL;
	225	else
	226	std = V4L2_STD_NTSC;
	227	if (pstd)
	228	*pstd = std;
	229	if (pstatus)
	230	*pstatus = status;
	231
	232	v4l2_dbg(1, debug, sd, "get status %x\n", status);
	233	return 0;
	234	}
1da177e4	235
c2179ad8 HV	236	static int bt819_querystd(struct v4l2_subdev sd, v4l2_std_id std)
	237	{
	238	return bt819_status(sd, NULL, std);
	239	}
1da177e4	240
c2179ad8 HV	241	static int bt819_g_input_status(struct v4l2_subdev sd, u32 status)
	242	{
	243	return bt819_status(sd, status, NULL);
	244	}
	245
	246	static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
	247	{
	248	struct bt819 *decoder = to_bt819(sd);
	249	struct timing *timing = NULL;
	250
cc5cef8e	251	v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
c2179ad8 HV	252
	253	if (std & V4L2_STD_NTSC) {
	254	bt819_setbit(decoder, 0x01, 0, 1);
	255	bt819_setbit(decoder, 0x01, 1, 0);
	256	bt819_setbit(decoder, 0x01, 5, 0);
	257	bt819_write(decoder, 0x18, 0x68);
	258	bt819_write(decoder, 0x19, 0x5d);
	259	/* bt819_setbit(decoder, 0x1a, 5, 1); */
	260	timing = &timing_data[1];
	261	} else if (std & V4L2_STD_PAL) {
	262	bt819_setbit(decoder, 0x01, 0, 1);
	263	bt819_setbit(decoder, 0x01, 1, 1);
	264	bt819_setbit(decoder, 0x01, 5, 1);
	265	bt819_write(decoder, 0x18, 0x7f);
	266	bt819_write(decoder, 0x19, 0x72);
	267	/* bt819_setbit(decoder, 0x1a, 5, 0); */
	268	timing = &timing_data[0];
	269	} else {
cc5cef8e HV	270	v4l2_dbg(1, debug, sd, "unsupported norm %llx\n",
cc5cef8e HV	271	(unsigned long long)std);
c2179ad8	272	return -EINVAL;
1da177e4	273	}
c2179ad8 HV	274	bt819_write(decoder, 0x03,
	275	(((timing->vdelay >> 8) & 0x03) << 6) \|
	276	(((timing->vactive >> 8) & 0x03) << 4) \|
	277	(((timing->hdelay >> 8) & 0x03) << 2) \|
	278	((timing->hactive >> 8) & 0x03));
	279	bt819_write(decoder, 0x04, timing->vdelay & 0xff);
	280	bt819_write(decoder, 0x05, timing->vactive & 0xff);
	281	bt819_write(decoder, 0x06, timing->hdelay & 0xff);
	282	bt819_write(decoder, 0x07, timing->hactive & 0xff);
	283	bt819_write(decoder, 0x08, (timing->hscale >> 8) & 0xff);
	284	bt819_write(decoder, 0x09, timing->hscale & 0xff);
	285	decoder->norm = std;
	286	return 0;
	287	}
1da177e4	288
c2179ad8 HV	289	static int bt819_s_routing(struct v4l2_subdev sd, const struct v4l2_routing route)
	290	{
	291	struct bt819 *decoder = to_bt819(sd);
1da177e4	292
c2179ad8	293	v4l2_dbg(1, debug, sd, "set input %x\n", route->input);
1da177e4	294
c2179ad8 HV	295	if (route->input < 0 \|\| route->input > 7)
c2179ad8 HV	296	return -EINVAL;
1da177e4	297
c2179ad8 HV	298	if (decoder->input != route->input) {
	299	decoder->input = route->input;
	300	/* select mode */
	301	if (decoder->input == 0) {
	302	bt819_setbit(decoder, 0x0b, 6, 0);
	303	bt819_setbit(decoder, 0x1a, 1, 1);
	304	} else {
	305	bt819_setbit(decoder, 0x0b, 6, 1);
	306	bt819_setbit(decoder, 0x1a, 1, 0);
1da177e4	307	}
7fd011fb	308	}
c2179ad8 HV	309	return 0;
c2179ad8 HV	310	}
1da177e4	311
c2179ad8 HV	312	static int bt819_s_stream(struct v4l2_subdev *sd, int enable)
	313	{
	314	struct bt819 *decoder = to_bt819(sd);
1da177e4	315
c2179ad8	316	v4l2_dbg(1, debug, sd, "enable output %x\n", enable);
1da177e4	317
c2179ad8 HV	318	if (decoder->enable != enable) {
	319	decoder->enable = enable;
	320	bt819_setbit(decoder, 0x16, 7, !enable);
7fd011fb	321	}
c2179ad8 HV	322	return 0;
c2179ad8 HV	323	}
1da177e4	324
c2179ad8 HV	325	static int bt819_queryctrl(struct v4l2_subdev sd, struct v4l2_queryctrl qc)
	326	{
	327	switch (qc->id) {
	328	case V4L2_CID_BRIGHTNESS:
	329	v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
	330	break;
107063c6	331
c2179ad8 HV	332	case V4L2_CID_CONTRAST:
	333	v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
	334	break;
107063c6	335
c2179ad8 HV	336	case V4L2_CID_SATURATION:
	337	v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
	338	break;
107063c6	339
c2179ad8 HV	340	case V4L2_CID_HUE:
c2179ad8 HV	341	v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
1da177e4	342	break;
c2179ad8 HV	343
	344	default:
	345	return -EINVAL;
7fd011fb	346	}
c2179ad8 HV	347	return 0;
c2179ad8 HV	348	}
1da177e4	349
c2179ad8 HV	350	static int bt819_s_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
	351	{
	352	struct bt819 *decoder = to_bt819(sd);
	353	int temp;
1da177e4	354
c2179ad8 HV	355	switch (ctrl->id) {
	356	case V4L2_CID_BRIGHTNESS:
	357	if (decoder->bright == ctrl->value)
107063c6	358	break;
c2179ad8 HV	359	decoder->bright = ctrl->value;
	360	bt819_write(decoder, 0x0a, decoder->bright);
	361	break;
1da177e4	362
c2179ad8 HV	363	case V4L2_CID_CONTRAST:
c2179ad8 HV	364	if (decoder->contrast == ctrl->value)
107063c6	365	break;
c2179ad8 HV	366	decoder->contrast = ctrl->value;
	367	bt819_write(decoder, 0x0c, decoder->contrast & 0xff);
	368	bt819_setbit(decoder, 0x0b, 2, ((decoder->contrast >> 8) & 0x01));
	369	break;
1da177e4	370
c2179ad8 HV	371	case V4L2_CID_SATURATION:
c2179ad8 HV	372	if (decoder->sat == ctrl->value)
107063c6	373	break;
c2179ad8 HV	374	decoder->sat = ctrl->value;
	375	bt819_write(decoder, 0x0d, (decoder->sat >> 7) & 0xff);
	376	bt819_setbit(decoder, 0x0b, 1, ((decoder->sat >> 15) & 0x01));
	377
	378	/* Ratio between U gain and V gain must stay the same as
	379	the ratio between the default U and V gain values. */
	380	temp = (decoder->sat * 180) / 254;
	381	bt819_write(decoder, 0x0e, (temp >> 7) & 0xff);
	382	bt819_setbit(decoder, 0x0b, 0, (temp >> 15) & 0x01);
	383	break;
1da177e4	384
c2179ad8 HV	385	case V4L2_CID_HUE:
c2179ad8 HV	386	if (decoder->hue == ctrl->value)
107063c6	387	break;
c2179ad8 HV	388	decoder->hue = ctrl->value;
c2179ad8 HV	389	bt819_write(decoder, 0x0f, decoder->hue);
107063c6	390	break;
c2179ad8 HV	391
	392	default:
	393	return -EINVAL;
107063c6	394	}
c2179ad8 HV	395	return 0;
c2179ad8 HV	396	}
1da177e4	397
c2179ad8 HV	398	static int bt819_g_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
	399	{
	400	struct bt819 *decoder = to_bt819(sd);
1da177e4	401
c2179ad8 HV	402	switch (ctrl->id) {
	403	case V4L2_CID_BRIGHTNESS:
	404	ctrl->value = decoder->bright;
	405	break;
	406	case V4L2_CID_CONTRAST:
	407	ctrl->value = decoder->contrast;
	408	break;
	409	case V4L2_CID_SATURATION:
	410	ctrl->value = decoder->sat;
	411	break;
	412	case V4L2_CID_HUE:
	413	ctrl->value = decoder->hue;
1da177e4	414	break;
1da177e4 LT	415	default:
	416	return -EINVAL;
	417	}
1da177e4 LT	418	return 0;
	419	}
	420
c2179ad8 HV	421	static int bt819_g_chip_ident(struct v4l2_subdev sd, struct v4l2_dbg_chip_ident chip)
	422	{
	423	struct bt819 *decoder = to_bt819(sd);
	424	struct i2c_client *client = v4l2_get_subdevdata(sd);
	425
	426	return v4l2_chip_ident_i2c_client(client, chip, decoder->ident, 0);
	427	}
	428
1da177e4 LT	429	/* ----------------------------------------------------------------------- */
1da177e4 LT	430
c2179ad8 HV	431	static const struct v4l2_subdev_core_ops bt819_core_ops = {
	432	.g_chip_ident = bt819_g_chip_ident,
	433	.g_ctrl = bt819_g_ctrl,
	434	.s_ctrl = bt819_s_ctrl,
	435	.queryctrl = bt819_queryctrl,
	436	};
1da177e4	437
c2179ad8 HV	438	static const struct v4l2_subdev_tuner_ops bt819_tuner_ops = {
	439	.s_std = bt819_s_std,
	440	};
	441
	442	static const struct v4l2_subdev_video_ops bt819_video_ops = {
	443	.s_routing = bt819_s_routing,
	444	.s_stream = bt819_s_stream,
	445	.querystd = bt819_querystd,
	446	.g_input_status = bt819_g_input_status,
	447	};
	448
	449	static const struct v4l2_subdev_ops bt819_ops = {
	450	.core = &bt819_core_ops,
	451	.tuner = &bt819_tuner_ops,
	452	.video = &bt819_video_ops,
	453	};
	454
	455	/* ----------------------------------------------------------------------- */
1da177e4	456
7fd011fb HV	457	static int bt819_probe(struct i2c_client *client,
7fd011fb HV	458	const struct i2c_device_id *id)
1da177e4	459	{
7fd011fb	460	int i, ver;
1da177e4	461	struct bt819 *decoder;
c2179ad8	462	struct v4l2_subdev *sd;
7fd011fb	463	const char *name;
1da177e4 LT	464
1da177e4 LT	465	/* Check if the adapter supports the needed features */
7fd011fb HV	466	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
7fd011fb HV	467	return -ENODEV;
1da177e4	468
c2179ad8 HV	469	decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL);
	470	if (decoder == NULL)
	471	return -ENOMEM;
	472	sd = &decoder->sd;
	473	v4l2_i2c_subdev_init(sd, client, &bt819_ops);
	474
	475	ver = bt819_read(decoder, 0x17);
7fd011fb HV	476	switch (ver & 0xf0) {
	477	case 0x70:
	478	name = "bt819a";
c2179ad8	479	decoder->ident = V4L2_IDENT_BT819A;
7fd011fb HV	480	break;
	481	case 0x60:
	482	name = "bt817a";
c2179ad8	483	decoder->ident = V4L2_IDENT_BT817A;
7fd011fb HV	484	break;
	485	case 0x20:
	486	name = "bt815a";
c2179ad8	487	decoder->ident = V4L2_IDENT_BT815A;
7fd011fb HV	488	break;
7fd011fb HV	489	default:
c2179ad8	490	v4l2_dbg(1, debug, sd,
7fd011fb HV	491	"unknown chip version 0x%02x\n", ver);
	492	return -ENODEV;
	493	}
	494
	495	v4l_info(client, "%s found @ 0x%x (%s)\n", name,
	496	client->addr << 1, client->adapter->name);
1da177e4	497
107063c6	498	decoder->norm = V4L2_STD_NTSC;
1da177e4 LT	499	decoder->input = 0;
1da177e4 LT	500	decoder->enable = 1;
107063c6 HV	501	decoder->bright = 0;
	502	decoder->contrast = 0xd8; /* 100% of original signal */
	503	decoder->hue = 0;
c2179ad8	504	decoder->sat = 0xfe; /* 100% of original signal */
1da177e4	505
c2179ad8	506	i = bt819_init(sd);
7fd011fb	507	if (i < 0)
c2179ad8	508	v4l2_dbg(1, debug, sd, "init status %d\n", i);
1da177e4 LT	509	return 0;
	510	}
	511
7fd011fb	512	static int bt819_remove(struct i2c_client *client)
1da177e4	513	{
c2179ad8 HV	514	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	515
	516	v4l2_device_unregister_subdev(sd);
	517	kfree(to_bt819(sd));
1da177e4 LT	518	return 0;
	519	}
	520
	521	/* ----------------------------------------------------------------------- */
	522
7fd011fb HV	523	static const struct i2c_device_id bt819_id[] = {
	524	{ "bt819a", 0 },
	525	{ "bt817a", 0 },
	526	{ "bt815a", 0 },
	527	{ }
	528	};
	529	MODULE_DEVICE_TABLE(i2c, bt819_id);
1da177e4	530
7fd011fb HV	531	static struct v4l2_i2c_driver_data v4l2_i2c_data = {
7fd011fb HV	532	.name = "bt819",
7fd011fb HV	533	.probe = bt819_probe,
	534	.remove = bt819_remove,
	535	.id_table = bt819_id,
1da177e4	536	};