[deliverable/linux.git] / drivers / media / video / cx25840 / cx25840-vbi.c

/* cx25840 VBI functions
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */


#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <media/v4l2-common.h>
#include <media/cx25840.h>

#include "cx25840-core.h"

static int odd_parity(u8 c)
{
	c ^= (c >> 4);
	c ^= (c >> 2);
	c ^= (c >> 1);

	return c & 1;
}

static int decode_vps(u8 * dst, u8 * p)
{
	static const u8 biphase_tbl[] = {
		0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
		0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
		0xd2, 0x5a, 0x52, 0xd2, 0x96, 0x1e, 0x16, 0x96,
		0x92, 0x1a, 0x12, 0x92, 0xd2, 0x5a, 0x52, 0xd2,
		0xd0, 0x58, 0x50, 0xd0, 0x94, 0x1c, 0x14, 0x94,
		0x90, 0x18, 0x10, 0x90, 0xd0, 0x58, 0x50, 0xd0,
		0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
		0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
		0xe1, 0x69, 0x61, 0xe1, 0xa5, 0x2d, 0x25, 0xa5,
		0xa1, 0x29, 0x21, 0xa1, 0xe1, 0x69, 0x61, 0xe1,
		0xc3, 0x4b, 0x43, 0xc3, 0x87, 0x0f, 0x07, 0x87,
		0x83, 0x0b, 0x03, 0x83, 0xc3, 0x4b, 0x43, 0xc3,
		0xc1, 0x49, 0x41, 0xc1, 0x85, 0x0d, 0x05, 0x85,
		0x81, 0x09, 0x01, 0x81, 0xc1, 0x49, 0x41, 0xc1,
		0xe1, 0x69, 0x61, 0xe1, 0xa5, 0x2d, 0x25, 0xa5,
		0xa1, 0x29, 0x21, 0xa1, 0xe1, 0x69, 0x61, 0xe1,
		0xe0, 0x68, 0x60, 0xe0, 0xa4, 0x2c, 0x24, 0xa4,
		0xa0, 0x28, 0x20, 0xa0, 0xe0, 0x68, 0x60, 0xe0,
		0xc2, 0x4a, 0x42, 0xc2, 0x86, 0x0e, 0x06, 0x86,
		0x82, 0x0a, 0x02, 0x82, 0xc2, 0x4a, 0x42, 0xc2,
		0xc0, 0x48, 0x40, 0xc0, 0x84, 0x0c, 0x04, 0x84,
		0x80, 0x08, 0x00, 0x80, 0xc0, 0x48, 0x40, 0xc0,
		0xe0, 0x68, 0x60, 0xe0, 0xa4, 0x2c, 0x24, 0xa4,
		0xa0, 0x28, 0x20, 0xa0, 0xe0, 0x68, 0x60, 0xe0,
		0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
		0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
		0xd2, 0x5a, 0x52, 0xd2, 0x96, 0x1e, 0x16, 0x96,
		0x92, 0x1a, 0x12, 0x92, 0xd2, 0x5a, 0x52, 0xd2,
		0xd0, 0x58, 0x50, 0xd0, 0x94, 0x1c, 0x14, 0x94,
		0x90, 0x18, 0x10, 0x90, 0xd0, 0x58, 0x50, 0xd0,
		0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
		0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
	};

	u8 c, err = 0;
	int i;

	for (i = 0; i < 2 * 13; i += 2) {
		err |= biphase_tbl[p[i]] | biphase_tbl[p[i + 1]];
		c = (biphase_tbl[p[i + 1]] & 0xf) |
		    ((biphase_tbl[p[i]] & 0xf) << 4);
		dst[i / 2] = c;
	}

	return err & 0xf0;
}

void cx25840_vbi_setup(struct i2c_client *client)
{
	struct cx25840_state *state = i2c_get_clientdata(client);
	v4l2_std_id std = cx25840_get_v4lstd(client);
	int hblank,hactive,burst,vblank,vactive,sc,vblank656,src_decimation;
	int luma_lpf,uv_lpf, comb;
	u32 pll_int,pll_frac,pll_post;

	/* datasheet startup, step 8d */
	if (std & ~V4L2_STD_NTSC) {
		cx25840_write(client, 0x49f, 0x11);
	} else {
		cx25840_write(client, 0x49f, 0x14);
	}

	if (std & V4L2_STD_625_50) {
		hblank=0x084;
		hactive=0x2d0;
		burst=0x5d;
		vblank=0x024;
		vactive=0x244;
		vblank656=0x28;
		src_decimation=0x21f;

		luma_lpf=2;
		if (std & V4L2_STD_SECAM) {
			uv_lpf=0;
			comb=0;
			sc=0x0a425f;
		} else {
			uv_lpf=1;
			comb=0x20;
			sc=0x0a8263;
		}
	} else {
		hactive=720;
		hblank=122;
		vactive=487;
		luma_lpf=1;
		uv_lpf=1;

		src_decimation=0x21f;
		if (std == V4L2_STD_PAL_M) {
			vblank=20;
			vblank656=24;
			burst=0x61;
			comb=0x20;

			sc=555452;
		} else {
			vblank=26;
			vblank656=26;
			burst=0x5b;
			comb=0x66;
			sc=556063;
		}
	}

	/* DEBUG: Displays configured PLL frequency */
	pll_int=cx25840_read(client, 0x108);
	pll_frac=cx25840_read4(client, 0x10c)&0x1ffffff;
	pll_post=cx25840_read(client, 0x109);
	v4l_dbg(1, cx25840_debug, client,
				"PLL regs = int: %u, frac: %u, post: %u\n",
				pll_int,pll_frac,pll_post);

	if (pll_post) {
		int fin, fsc;
		int pll= (28636363L*((((u64)pll_int)<<25L)+pll_frac)) >>25L;

		pll/=pll_post;
		v4l_dbg(1, cx25840_debug, client, "PLL = %d.%06d MHz\n",
						pll/1000000, pll%1000000);
		v4l_dbg(1, cx25840_debug, client, "PLL/8 = %d.%06d MHz\n",
						pll/8000000, (pll/8)%1000000);

		fin=((u64)src_decimation*pll)>>12;
		v4l_dbg(1, cx25840_debug, client, "ADC Sampling freq = "
						"%d.%06d MHz\n",
						fin/1000000,fin%1000000);

		fsc= (((u64)sc)*pll) >> 24L;
		v4l_dbg(1, cx25840_debug, client, "Chroma sub-carrier freq = "
						"%d.%06d MHz\n",
						fsc/1000000,fsc%1000000);

		v4l_dbg(1, cx25840_debug, client, "hblank %i, hactive %i, "
			"vblank %i , vactive %i, vblank656 %i, src_dec %i,"
			"burst 0x%02x, luma_lpf %i, uv_lpf %i, comb 0x%02x,"
			" sc 0x%06x\n",
			hblank, hactive, vblank, vactive, vblank656,
			src_decimation, burst, luma_lpf, uv_lpf, comb, sc);
	}

	/* Sets horizontal blanking delay and active lines */
	cx25840_write(client, 0x470, hblank);
	cx25840_write(client, 0x471, 0xff&(((hblank>>8)&0x3)|(hactive <<4)));
	cx25840_write(client, 0x472, hactive>>4);

	/* Sets burst gate delay */
	cx25840_write(client, 0x473, burst);

	/* Sets vertical blanking delay and active duration */
	cx25840_write(client, 0x474, vblank);
	cx25840_write(client, 0x475, 0xff&(((vblank>>8)&0x3)|(vactive <<4)));
	cx25840_write(client, 0x476, vactive>>4);
	cx25840_write(client, 0x477, vblank656);

	/* Sets src decimation rate */
	cx25840_write(client, 0x478, 0xff&src_decimation);
	cx25840_write(client, 0x479, 0xff&(src_decimation>>8));

	/* Sets Luma and UV Low pass filters */
	cx25840_write(client, 0x47a, luma_lpf<<6|((uv_lpf<<4)&0x30));

	/* Enables comb filters */
	cx25840_write(client, 0x47b, comb);

	/* Sets SC Step*/
	cx25840_write(client, 0x47c, sc);
	cx25840_write(client, 0x47d, 0xff&sc>>8);
	cx25840_write(client, 0x47e, 0xff&sc>>16);

	/* Sets VBI parameters */
	if (std & V4L2_STD_625_50) {
		cx25840_write(client, 0x47f, 0x01);
		state->vbi_line_offset = 5;
	} else {
		cx25840_write(client, 0x47f, 0x00);
		state->vbi_line_offset = 8;
	}
}

int cx25840_vbi(struct i2c_client *client, unsigned int cmd, void *arg)
{
	struct cx25840_state *state = i2c_get_clientdata(client);
	struct v4l2_format *fmt;
	struct v4l2_sliced_vbi_format *svbi;

	switch (cmd) {
	case VIDIOC_G_FMT:
	{
		static u16 lcr2vbi[] = {
			0, V4L2_SLICED_TELETEXT_B, 0,	/* 1 */
			0, V4L2_SLICED_WSS_625, 0,	/* 4 */
			V4L2_SLICED_CAPTION_525,	/* 6 */
			0, 0, V4L2_SLICED_VPS, 0, 0,	/* 9 */
			0, 0, 0, 0
		};
		int i;

		fmt = arg;
		if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
			return -EINVAL;
		svbi = &fmt->fmt.sliced;
		memset(svbi, 0, sizeof(*svbi));
		/* we're done if raw VBI is active */
		if ((cx25840_read(client, 0x404) & 0x10) == 0)
			break;

		for (i = 7; i <= 23; i++) {
			u8 v = cx25840_read(client, 0x424 + i - 7);

			svbi->service_lines[0][i] = lcr2vbi[v >> 4];
			svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
			svbi->service_set |=
				 svbi->service_lines[0][i] | svbi->service_lines[1][i];
		}
		break;
	}

	case VIDIOC_S_FMT:
	{
		int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
		int vbi_offset = is_pal ? 1 : 0;
		int i, x;
		u8 lcr[24];

		fmt = arg;
		if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
			return -EINVAL;
		svbi = &fmt->fmt.sliced;
		if (svbi->service_set == 0) {
			/* raw VBI */
			memset(svbi, 0, sizeof(*svbi));

			/* Setup VBI */
			cx25840_vbi_setup(client);

			/* VBI Offset */
			cx25840_write(client, 0x47f, vbi_offset);
			cx25840_write(client, 0x404, 0x2e);
			break;
		}

		for (x = 0; x <= 23; x++)
			lcr[x] = 0x00;

		/* Setup VBI */
		cx25840_vbi_setup(client);

		/* Sliced VBI */
		cx25840_write(client, 0x404, 0x32);	/* Ancillary data */
		cx25840_write(client, 0x406, 0x13);
		cx25840_write(client, 0x47f, vbi_offset);

		if (is_pal) {
			for (i = 0; i <= 6; i++)
				svbi->service_lines[0][i] =
					svbi->service_lines[1][i] = 0;
		} else {
			for (i = 0; i <= 9; i++)
				svbi->service_lines[0][i] =
					svbi->service_lines[1][i] = 0;

			for (i = 22; i <= 23; i++)
				svbi->service_lines[0][i] =
					svbi->service_lines[1][i] = 0;
		}

		for (i = 7; i <= 23; i++) {
			for (x = 0; x <= 1; x++) {
				switch (svbi->service_lines[1-x][i]) {
				case V4L2_SLICED_TELETEXT_B:
					lcr[i] |= 1 << (4 * x);
					break;
				case V4L2_SLICED_WSS_625:
					lcr[i] |= 4 << (4 * x);
					break;
				case V4L2_SLICED_CAPTION_525:
					lcr[i] |= 6 << (4 * x);
					break;
				case V4L2_SLICED_VPS:
					lcr[i] |= 9 << (4 * x);
					break;
				}
			}
		}

		if (is_pal) {
			for (x = 1, i = 0x424; i <= 0x434; i++, x++) {
				cx25840_write(client, i, lcr[6 + x]);
			}
		}
		else {
			for (x = 1, i = 0x424; i <= 0x430; i++, x++) {
				cx25840_write(client, i, lcr[9 + x]);
			}
			for (i = 0x431; i <= 0x434; i++) {
				cx25840_write(client, i, 0);
			}
		}

		cx25840_write(client, 0x43c, 0x16);

		if (is_pal) {
			cx25840_write(client, 0x474, 0x2a);
		} else {
			cx25840_write(client, 0x474, 0x22);
		}
		break;
	}

	case VIDIOC_INT_DECODE_VBI_LINE:
	{
		struct v4l2_decode_vbi_line *vbi = arg;
		u8 *p = vbi->p;
		int id1, id2, l, err = 0;

		if (p[0] || p[1] != 0xff || p[2] != 0xff ||
		    (p[3] != 0x55 && p[3] != 0x91)) {
			vbi->line = vbi->type = 0;
			break;
		}

		p += 4;
		id1 = p[-1];
		id2 = p[0] & 0xf;
		l = p[2] & 0x3f;
		l += state->vbi_line_offset;
		p += 4;

		switch (id2) {
		case 1:
			id2 = V4L2_SLICED_TELETEXT_B;
			break;
		case 4:
			id2 = V4L2_SLICED_WSS_625;
			break;
		case 6:
			id2 = V4L2_SLICED_CAPTION_525;
			err = !odd_parity(p[0]) || !odd_parity(p[1]);
			break;
		case 9:
			id2 = V4L2_SLICED_VPS;
			if (decode_vps(p, p) != 0) {
				err = 1;
			}
			break;
		default:
			id2 = 0;
			err = 1;
			break;
		}

		vbi->type = err ? 0 : id2;
		vbi->line = err ? 0 : l;
		vbi->is_second_field = err ? 0 : (id1 == 0x55);
		vbi->p = p;
		break;
	}
	}

	return 0;
}
Commit	Line	Data
bd985160 HV	1	/* cx25840 VBI functions
	2	*
	3	* This program is free software; you can redistribute it and/or
	4	* modify it under the terms of the GNU General Public License
	5	* as published by the Free Software Foundation; either version 2
	6	* of the License, or (at your option) any later version.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, write to the Free Software
	15	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	16	*/
	17
	18
	19	#include <linux/videodev2.h>
	20	#include <linux/i2c.h>
	21	#include <media/v4l2-common.h>
31bc09b5	22	#include <media/cx25840.h>
bd985160	23
31bc09b5	24	#include "cx25840-core.h"
bd985160	25
d92c20e0	26	static int odd_parity(u8 c)
bd985160 HV	27	{
	28	c ^= (c >> 4);
	29	c ^= (c >> 2);
	30	c ^= (c >> 1);
	31
	32	return c & 1;
	33	}
	34
d92c20e0	35	static int decode_vps(u8 * dst, u8 * p)
bd985160 HV	36	{
	37	static const u8 biphase_tbl[] = {
	38	0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
	39	0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
	40	0xd2, 0x5a, 0x52, 0xd2, 0x96, 0x1e, 0x16, 0x96,
	41	0x92, 0x1a, 0x12, 0x92, 0xd2, 0x5a, 0x52, 0xd2,
	42	0xd0, 0x58, 0x50, 0xd0, 0x94, 0x1c, 0x14, 0x94,
	43	0x90, 0x18, 0x10, 0x90, 0xd0, 0x58, 0x50, 0xd0,
	44	0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
	45	0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
	46	0xe1, 0x69, 0x61, 0xe1, 0xa5, 0x2d, 0x25, 0xa5,
	47	0xa1, 0x29, 0x21, 0xa1, 0xe1, 0x69, 0x61, 0xe1,
	48	0xc3, 0x4b, 0x43, 0xc3, 0x87, 0x0f, 0x07, 0x87,
	49	0x83, 0x0b, 0x03, 0x83, 0xc3, 0x4b, 0x43, 0xc3,
	50	0xc1, 0x49, 0x41, 0xc1, 0x85, 0x0d, 0x05, 0x85,
	51	0x81, 0x09, 0x01, 0x81, 0xc1, 0x49, 0x41, 0xc1,
	52	0xe1, 0x69, 0x61, 0xe1, 0xa5, 0x2d, 0x25, 0xa5,
	53	0xa1, 0x29, 0x21, 0xa1, 0xe1, 0x69, 0x61, 0xe1,
	54	0xe0, 0x68, 0x60, 0xe0, 0xa4, 0x2c, 0x24, 0xa4,
	55	0xa0, 0x28, 0x20, 0xa0, 0xe0, 0x68, 0x60, 0xe0,
	56	0xc2, 0x4a, 0x42, 0xc2, 0x86, 0x0e, 0x06, 0x86,
	57	0x82, 0x0a, 0x02, 0x82, 0xc2, 0x4a, 0x42, 0xc2,
	58	0xc0, 0x48, 0x40, 0xc0, 0x84, 0x0c, 0x04, 0x84,
	59	0x80, 0x08, 0x00, 0x80, 0xc0, 0x48, 0x40, 0xc0,
	60	0xe0, 0x68, 0x60, 0xe0, 0xa4, 0x2c, 0x24, 0xa4,
	61	0xa0, 0x28, 0x20, 0xa0, 0xe0, 0x68, 0x60, 0xe0,
	62	0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
	63	0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
	64	0xd2, 0x5a, 0x52, 0xd2, 0x96, 0x1e, 0x16, 0x96,
	65	0x92, 0x1a, 0x12, 0x92, 0xd2, 0x5a, 0x52, 0xd2,
	66	0xd0, 0x58, 0x50, 0xd0, 0x94, 0x1c, 0x14, 0x94,
	67	0x90, 0x18, 0x10, 0x90, 0xd0, 0x58, 0x50, 0xd0,
	68	0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
	69	0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
	70	};
	71
	72	u8 c, err = 0;
	73	int i;
	74
	75	for (i = 0; i < 2 * 13; i += 2) {
	76	err \|= biphase_tbl[p[i]] \| biphase_tbl[p[i + 1]];
	77	c = (biphase_tbl[p[i + 1]] & 0xf) \|
	78	((biphase_tbl[p[i]] & 0xf) << 4);
	79	dst[i / 2] = c;
	80	}
	81
	82	return err & 0xf0;
	83	}
	84
	85	void cx25840_vbi_setup(struct i2c_client *client)
	86	{
3e3bf277	87	struct cx25840_state *state = i2c_get_clientdata(client);
bd985160	88	v4l2_std_id std = cx25840_get_v4lstd(client);
839e4a4a MCC	89	int hblank,hactive,burst,vblank,vactive,sc,vblank656,src_decimation;
	90	int luma_lpf,uv_lpf, comb;
	91	u32 pll_int,pll_frac,pll_post;
bd985160	92
839e4a4a	93	/* datasheet startup, step 8d */
bd985160	94	if (std & ~V4L2_STD_NTSC) {
bd985160	95	cx25840_write(client, 0x49f, 0x11);
839e4a4a MCC	96	} else {
	97	cx25840_write(client, 0x49f, 0x14);
	98	}
bd985160	99
839e4a4a MCC	100	if (std & V4L2_STD_625_50) {
	101	hblank=0x084;
	102	hactive=0x2d0;
	103	burst=0x5d;
	104	vblank=0x024;
	105	vactive=0x244;
	106	vblank656=0x28;
	107	src_decimation=0x21f;
bd985160	108
839e4a4a	109	luma_lpf=2;
bd985160	110	if (std & V4L2_STD_SECAM) {
839e4a4a MCC	111	uv_lpf=0;
	112	comb=0;
	113	sc=0x0a425f;
bd985160	114	} else {
839e4a4a MCC	115	uv_lpf=1;
	116	comb=0x20;
	117	sc=0x0a8263;
bd985160	118	}
bd985160	119	} else {
839e4a4a MCC	120	hactive=720;
	121	hblank=122;
	122	vactive=487;
	123	luma_lpf=1;
	124	uv_lpf=1;
	125
	126	src_decimation=0x21f;
	127	if (std == V4L2_STD_PAL_M) {
	128	vblank=20;
	129	vblank656=24;
	130	burst=0x61;
	131	comb=0x20;
	132
	133	sc=555452;
	134	} else {
	135	vblank=26;
	136	vblank656=26;
	137	burst=0x5b;
	138	comb=0x66;
	139	sc=556063;
	140	}
	141	}
	142
	143	/* DEBUG: Displays configured PLL frequency */
	144	pll_int=cx25840_read(client, 0x108);
	145	pll_frac=cx25840_read4(client, 0x10c)&0x1ffffff;
	146	pll_post=cx25840_read(client, 0x109);
	147	v4l_dbg(1, cx25840_debug, client,
	148	"PLL regs = int: %u, frac: %u, post: %u\n",
	149	pll_int,pll_frac,pll_post);
	150
	151	if (pll_post) {
	152	int fin, fsc;
	153	int pll= (28636363L*((((u64)pll_int)<<25L)+pll_frac)) >>25L;
	154
	155	pll/=pll_post;
	156	v4l_dbg(1, cx25840_debug, client, "PLL = %d.%06d MHz\n",
	157	pll/1000000, pll%1000000);
	158	v4l_dbg(1, cx25840_debug, client, "PLL/8 = %d.%06d MHz\n",
	159	pll/8000000, (pll/8)%1000000);
	160
	161	fin=((u64)src_decimation*pll)>>12;
	162	v4l_dbg(1, cx25840_debug, client, "ADC Sampling freq = "
	163	"%d.%06d MHz\n",
	164	fin/1000000,fin%1000000);
	165
	166	fsc= (((u64)sc)*pll) >> 24L;
	167	v4l_dbg(1, cx25840_debug, client, "Chroma sub-carrier freq = "
	168	"%d.%06d MHz\n",
	169	fsc/1000000,fsc%1000000);
	170
	171	v4l_dbg(1, cx25840_debug, client, "hblank %i, hactive %i, "
	172	"vblank %i , vactive %i, vblank656 %i, src_dec %i,"
	173	"burst 0x%02x, luma_lpf %i, uv_lpf %i, comb 0x%02x,"
	174	" sc 0x%06x\n",
	175	hblank, hactive, vblank, vactive, vblank656,
	176	src_decimation, burst, luma_lpf, uv_lpf, comb, sc);
	177	}
	178
	179	/* Sets horizontal blanking delay and active lines */
	180	cx25840_write(client, 0x470, hblank);
	181	cx25840_write(client, 0x471, 0xff&(((hblank>>8)&0x3)\|(hactive <<4)));
	182	cx25840_write(client, 0x472, hactive>>4);
	183
184	/* Sets burst gate delay */
185	cx25840_write(client, 0x473, burst);
bd985160	186
839e4a4a MCC	187	/* Sets vertical blanking delay and active duration */
	188	cx25840_write(client, 0x474, vblank);
	189	cx25840_write(client, 0x475, 0xff&(((vblank>>8)&0x3)\|(vactive <<4)));
	190	cx25840_write(client, 0x476, vactive>>4);
	191	cx25840_write(client, 0x477, vblank656);
bd985160	192
839e4a4a MCC	193	/* Sets src decimation rate */
	194	cx25840_write(client, 0x478, 0xff&src_decimation);
	195	cx25840_write(client, 0x479, 0xff&(src_decimation>>8));
bd985160	196
839e4a4a MCC	197	/* Sets Luma and UV Low pass filters */
839e4a4a MCC	198	cx25840_write(client, 0x47a, luma_lpf<<6\|((uv_lpf<<4)&0x30));
bd985160	199
839e4a4a MCC	200	/* Enables comb filters */
	201	cx25840_write(client, 0x47b, comb);
	202
	203	/* Sets SC Step*/
	204	cx25840_write(client, 0x47c, sc);
	205	cx25840_write(client, 0x47d, 0xff&sc>>8);
	206	cx25840_write(client, 0x47e, 0xff&sc>>16);
	207
	208	/* Sets VBI parameters */
	209	if (std & V4L2_STD_625_50) {
	210	cx25840_write(client, 0x47f, 0x01);
	211	state->vbi_line_offset = 5;
	212	} else {
bd985160	213	cx25840_write(client, 0x47f, 0x00);
3e3bf277	214	state->vbi_line_offset = 8;
bd985160 HV	215	}
	216	}
	217
	218	int cx25840_vbi(struct i2c_client client, unsigned int cmd, void arg)
	219	{
3e3bf277	220	struct cx25840_state *state = i2c_get_clientdata(client);
bd985160 HV	221	struct v4l2_format *fmt;
	222	struct v4l2_sliced_vbi_format *svbi;
	223
	224	switch (cmd) {
	225	case VIDIOC_G_FMT:
	226	{
	227	static u16 lcr2vbi[] = {
9bc7400a	228	0, V4L2_SLICED_TELETEXT_B, 0, /* 1 */
bd985160 HV	229	0, V4L2_SLICED_WSS_625, 0, /* 4 */
	230	V4L2_SLICED_CAPTION_525, /* 6 */
	231	0, 0, V4L2_SLICED_VPS, 0, 0, /* 9 */
	232	0, 0, 0, 0
	233	};
	234	int i;
	235
	236	fmt = arg;
	237	if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
	238	return -EINVAL;
	239	svbi = &fmt->fmt.sliced;
	240	memset(svbi, 0, sizeof(*svbi));
	241	/* we're done if raw VBI is active */
	242	if ((cx25840_read(client, 0x404) & 0x10) == 0)
	243	break;
	244
	245	for (i = 7; i <= 23; i++) {
	246	u8 v = cx25840_read(client, 0x424 + i - 7);
	247
	248	svbi->service_lines[0][i] = lcr2vbi[v >> 4];
	249	svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
	250	svbi->service_set \|=
	251	svbi->service_lines[0][i] \| svbi->service_lines[1][i];
	252	}
	253	break;
	254	}
	255
	256	case VIDIOC_S_FMT:
	257	{
839e4a4a	258	int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
bd985160 HV	259	int vbi_offset = is_pal ? 1 : 0;
	260	int i, x;
	261	u8 lcr[24];
	262
	263	fmt = arg;
	264	if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
	265	return -EINVAL;
	266	svbi = &fmt->fmt.sliced;
	267	if (svbi->service_set == 0) {
	268	/* raw VBI */
	269	memset(svbi, 0, sizeof(*svbi));
	270
	271	/* Setup VBI */
	272	cx25840_vbi_setup(client);
	273
	274	/* VBI Offset */
	275	cx25840_write(client, 0x47f, vbi_offset);
	276	cx25840_write(client, 0x404, 0x2e);
	277	break;
	278	}
	279
	280	for (x = 0; x <= 23; x++)
	281	lcr[x] = 0x00;
	282
	283	/* Setup VBI */
	284	cx25840_vbi_setup(client);
	285
	286	/* Sliced VBI */
3e3bf277	287	cx25840_write(client, 0x404, 0x32); /* Ancillary data */
bd985160 HV	288	cx25840_write(client, 0x406, 0x13);
	289	cx25840_write(client, 0x47f, vbi_offset);
	290
	291	if (is_pal) {
	292	for (i = 0; i <= 6; i++)
	293	svbi->service_lines[0][i] =
	294	svbi->service_lines[1][i] = 0;
	295	} else {
	296	for (i = 0; i <= 9; i++)
	297	svbi->service_lines[0][i] =
	298	svbi->service_lines[1][i] = 0;
	299
	300	for (i = 22; i <= 23; i++)
	301	svbi->service_lines[0][i] =
	302	svbi->service_lines[1][i] = 0;
	303	}
	304
	305	for (i = 7; i <= 23; i++) {
	306	for (x = 0; x <= 1; x++) {
	307	switch (svbi->service_lines[1-x][i]) {
9bc7400a	308	case V4L2_SLICED_TELETEXT_B:
bd985160 HV	309	lcr[i] \|= 1 << (4 * x);
	310	break;
	311	case V4L2_SLICED_WSS_625:
	312	lcr[i] \|= 4 << (4 * x);
	313	break;
	314	case V4L2_SLICED_CAPTION_525:
	315	lcr[i] \|= 6 << (4 * x);
	316	break;
	317	case V4L2_SLICED_VPS:
	318	lcr[i] \|= 9 << (4 * x);
	319	break;
	320	}
	321	}
	322	}
	323
3e3bf277 CN	324	if (is_pal) {
	325	for (x = 1, i = 0x424; i <= 0x434; i++, x++) {
	326	cx25840_write(client, i, lcr[6 + x]);
	327	}
	328	}
	329	else {
	330	for (x = 1, i = 0x424; i <= 0x430; i++, x++) {
	331	cx25840_write(client, i, lcr[9 + x]);
	332	}
	333	for (i = 0x431; i <= 0x434; i++) {
	334	cx25840_write(client, i, 0);
	335	}
bd985160 HV	336	}
	337
	338	cx25840_write(client, 0x43c, 0x16);
	339
	340	if (is_pal) {
	341	cx25840_write(client, 0x474, 0x2a);
	342	} else {
3e3bf277	343	cx25840_write(client, 0x474, 0x22);
bd985160 HV	344	}
	345	break;
	346	}
	347
	348	case VIDIOC_INT_DECODE_VBI_LINE:
	349	{
	350	struct v4l2_decode_vbi_line *vbi = arg;
	351	u8 *p = vbi->p;
	352	int id1, id2, l, err = 0;
	353
	354	if (p[0] \|\| p[1] != 0xff \|\| p[2] != 0xff \|\|
	355	(p[3] != 0x55 && p[3] != 0x91)) {
	356	vbi->line = vbi->type = 0;
	357	break;
	358	}
	359
	360	p += 4;
	361	id1 = p[-1];
	362	id2 = p[0] & 0xf;
	363	l = p[2] & 0x3f;
3e3bf277	364	l += state->vbi_line_offset;
bd985160 HV	365	p += 4;
	366
	367	switch (id2) {
	368	case 1:
9bc7400a	369	id2 = V4L2_SLICED_TELETEXT_B;
bd985160 HV	370	break;
	371	case 4:
	372	id2 = V4L2_SLICED_WSS_625;
	373	break;
	374	case 6:
	375	id2 = V4L2_SLICED_CAPTION_525;
	376	err = !odd_parity(p[0]) \|\| !odd_parity(p[1]);
	377	break;
	378	case 9:
	379	id2 = V4L2_SLICED_VPS;
	380	if (decode_vps(p, p) != 0) {
	381	err = 1;
	382	}
	383	break;
	384	default:
	385	id2 = 0;
	386	err = 1;
	387	break;
	388	}
	389
	390	vbi->type = err ? 0 : id2;
	391	vbi->line = err ? 0 : l;
	392	vbi->is_second_field = err ? 0 : (id1 == 0x55);
	393	vbi->p = p;
	394	break;
	395	}
	396	}
	397
	398	return 0;
	399	}