cx25840-core.c 30.4 KB
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/* cx25840 - Conexant CX25840 audio/video decoder driver
 *
 * Copyright (C) 2004 Ulf Eklund
 *
 * Based on the saa7115 driver and on the first verison of Chris Kennedy's
 * cx25840 driver.
 *
 * Changes by Tyler Trafford <tatrafford@comcast.net>
 *    - cleanup/rewrite for V4L2 API (2005)
 *
 * VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
 *
 * 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/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <media/audiochip.h>
#include <media/v4l2-common.h>

#include "cx25840.h"

MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
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MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
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MODULE_LICENSE("GPL");

static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };


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static int cx25840_debug;
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module_param_named(debug,cx25840_debug, int, 0644);
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MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
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I2C_CLIENT_INSMOD;

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

int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
{
	u8 buffer[3];
	buffer[0] = addr >> 8;
	buffer[1] = addr & 0xff;
	buffer[2] = value;
	return i2c_master_send(client, buffer, 3);
}

int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
{
	u8 buffer[6];
	buffer[0] = addr >> 8;
	buffer[1] = addr & 0xff;
	buffer[2] = value >> 24;
	buffer[3] = (value >> 16) & 0xff;
	buffer[4] = (value >> 8) & 0xff;
	buffer[5] = value & 0xff;
	return i2c_master_send(client, buffer, 6);
}

u8 cx25840_read(struct i2c_client * client, u16 addr)
{
	u8 buffer[2];
	buffer[0] = addr >> 8;
	buffer[1] = addr & 0xff;

	if (i2c_master_send(client, buffer, 2) < 2)
		return 0;

	if (i2c_master_recv(client, buffer, 1) < 1)
		return 0;

	return buffer[0];
}

u32 cx25840_read4(struct i2c_client * client, u16 addr)
{
	u8 buffer[4];
	buffer[0] = addr >> 8;
	buffer[1] = addr & 0xff;

	if (i2c_master_send(client, buffer, 2) < 2)
		return 0;

	if (i2c_master_recv(client, buffer, 4) < 4)
		return 0;

	return (buffer[0] << 24) | (buffer[1] << 16) |
	    (buffer[2] << 8) | buffer[3];
}

int cx25840_and_or(struct i2c_client *client, u16 addr, u8 and_mask,
		   u8 or_value)
{
	return cx25840_write(client, addr,
			     (cx25840_read(client, addr) & and_mask) |
			     or_value);
}

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

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static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
						enum cx25840_audio_input aud_input);
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static void log_status(struct i2c_client *client);

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

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static void init_dll1(struct i2c_client *client)
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{
	/* This is the Hauppauge sequence used to
	 * initialize the Delay Lock Loop 1 (ADC DLL). */
	cx25840_write(client, 0x159, 0x23);
	cx25840_write(client, 0x15a, 0x87);
	cx25840_write(client, 0x15b, 0x06);
	cx25840_write(client, 0x159, 0xe1);
	cx25840_write(client, 0x15a, 0x86);
	cx25840_write(client, 0x159, 0xe0);
	cx25840_write(client, 0x159, 0xe1);
	cx25840_write(client, 0x15b, 0x10);
}

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static void init_dll2(struct i2c_client *client)
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{
	/* This is the Hauppauge sequence used to
	 * initialize the Delay Lock Loop 2 (ADC DLL). */
	cx25840_write(client, 0x15d, 0xe3);
	cx25840_write(client, 0x15e, 0x86);
	cx25840_write(client, 0x15f, 0x06);
	cx25840_write(client, 0x15d, 0xe1);
	cx25840_write(client, 0x15d, 0xe0);
	cx25840_write(client, 0x15d, 0xe1);
}

static void cx25840_initialize(struct i2c_client *client, int loadfw)
{
	struct cx25840_state *state = i2c_get_clientdata(client);

	/* datasheet startup in numbered steps, refer to page 3-77 */
	/* 2. */
	cx25840_and_or(client, 0x803, ~0x10, 0x00);
	/* The default of this register should be 4, but I get 0 instead.
	 * Set this register to 4 manually. */
	cx25840_write(client, 0x000, 0x04);
	/* 3. */
	init_dll1(client);
	init_dll2(client);
	cx25840_write(client, 0x136, 0x0a);
	/* 4. */
	cx25840_write(client, 0x13c, 0x01);
	cx25840_write(client, 0x13c, 0x00);
	/* 5. */
	if (loadfw)
		cx25840_loadfw(client);
	/* 6. */
	cx25840_write(client, 0x115, 0x8c);
	cx25840_write(client, 0x116, 0x07);
	cx25840_write(client, 0x118, 0x02);
	/* 7. */
	cx25840_write(client, 0x4a5, 0x80);
	cx25840_write(client, 0x4a5, 0x00);
	cx25840_write(client, 0x402, 0x00);
	/* 8. */
	cx25840_write(client, 0x401, 0x18);
	cx25840_write(client, 0x4a2, 0x10);
	cx25840_write(client, 0x402, 0x04);
	/* 10. */
	cx25840_write(client, 0x8d3, 0x1f);
	cx25840_write(client, 0x8e3, 0x03);

	cx25840_vbi_setup(client);

	/* trial and error says these are needed to get audio */
	cx25840_write(client, 0x914, 0xa0);
	cx25840_write(client, 0x918, 0xa0);
	cx25840_write(client, 0x919, 0x01);

	/* stereo prefered */
	cx25840_write(client, 0x809, 0x04);
	/* AC97 shift */
	cx25840_write(client, 0x8cf, 0x0f);

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	/* (re)set input */
	set_input(client, state->vid_input, state->aud_input);
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	/* start microcontroller */
	cx25840_and_or(client, 0x803, ~0x10, 0x10);
}

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

static void input_change(struct i2c_client *client)
{
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	struct cx25840_state *state = i2c_get_clientdata(client);
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	v4l2_std_id std = cx25840_get_v4lstd(client);

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	/* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
	   instead of V4L2_STD_PAL. Someone needs to test this. */
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	if (std & V4L2_STD_PAL) {
		/* Follow tuner change procedure for PAL */
		cx25840_write(client, 0x808, 0xff);
		cx25840_write(client, 0x80b, 0x10);
	} else if (std & V4L2_STD_SECAM) {
		/* Select autodetect for SECAM */
		cx25840_write(client, 0x808, 0xff);
		cx25840_write(client, 0x80b, 0x10);
	} else if (std & V4L2_STD_NTSC) {
		/* NTSC */
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		if (state->pvr150_workaround) {
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			/* Certain Hauppauge PVR150 models have a hardware bug
			   that causes audio to drop out. For these models the
			   audio standard must be set explicitly.
			   To be precise: it affects cards with tuner models
			   85, 99 and 112 (model numbers from tveeprom). */
			if (std == V4L2_STD_NTSC_M_JP) {
				/* Japan uses EIAJ audio standard */
				cx25840_write(client, 0x808, 0x2f);
			} else {
				/* Others use the BTSC audio standard */
				cx25840_write(client, 0x808, 0x1f);
			}
			/* South Korea uses the A2-M (aka Zweiton M) audio
			   standard, and should set 0x808 to 0x3f, but I don't
			   know how to detect this. */
		} else if (std == V4L2_STD_NTSC_M_JP) {
			/* Japan uses EIAJ audio standard */
			cx25840_write(client, 0x808, 0xf7);
		} else {
			/* Others use the BTSC audio standard */
			cx25840_write(client, 0x808, 0xf6);
		}
		/* South Korea uses the A2-M (aka Zweiton M) audio standard,
		   and should set 0x808 to 0xf8, but I don't know how to
		   detect this. */
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		cx25840_write(client, 0x80b, 0x00);
	}

	if (cx25840_read(client, 0x803) & 0x10) {
		/* restart audio decoder microcontroller */
		cx25840_and_or(client, 0x803, ~0x10, 0x00);
		cx25840_and_or(client, 0x803, ~0x10, 0x10);
	}
}

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static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
						enum cx25840_audio_input aud_input)
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{
	struct cx25840_state *state = i2c_get_clientdata(client);
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	u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
			   vid_input <= CX25840_COMPOSITE8);
	u8 reg;
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	v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
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			vid_input, aud_input);
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	if (is_composite) {
		reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
	} else {
		int luma = vid_input & 0xf0;
		int chroma = vid_input & 0xf00;
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		if ((vid_input & ~0xff0) ||
		    luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
		    chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
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			v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
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			return -EINVAL;
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		}
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		reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
		if (chroma >= CX25840_SVIDEO_CHROMA7) {
			reg &= 0x3f;
			reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
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		} else {
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			reg &= 0xcf;
			reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
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		}
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	}
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	switch (aud_input) {
	case CX25840_AUDIO_SERIAL:
		/* do nothing, use serial audio input */
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		break;
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	case CX25840_AUDIO4: reg &= ~0x30; break;
	case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
	case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
	case CX25840_AUDIO7: reg &= ~0xc0; break;
	case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
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	default:
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		v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
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		return -EINVAL;
	}

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	cx25840_write(client, 0x103, reg);
	/* Set INPUT_MODE to Composite (0) or S-Video (1) */
	cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
	/* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
	cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
	/* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
	if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
		cx25840_and_or(client, 0x102, ~0x4, 4);
	else
		cx25840_and_or(client, 0x102, ~0x4, 0);

	state->vid_input = vid_input;
	state->aud_input = aud_input;
	cx25840_audio_set_path(client);
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	input_change(client);
	return 0;
}

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

static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
{
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	u8 fmt=0; 	/* zero is autodetect */

	/* First tests should be against specific std */
	if (std & V4L2_STD_NTSC_M_JP) {
		fmt=0x2;
	} else if (std & V4L2_STD_NTSC_443) {
		fmt=0x3;
	} else if (std & V4L2_STD_PAL_M) {
		fmt=0x5;
	} else if (std & V4L2_STD_PAL_N) {
		fmt=0x6;
	} else if (std & V4L2_STD_PAL_Nc) {
		fmt=0x7;
	} else if (std & V4L2_STD_PAL_60) {
		fmt=0x8;
	} else {
		/* Then, test against generic ones */
		if (std & V4L2_STD_NTSC) {
			fmt=0x1;
		} else if (std & V4L2_STD_PAL) {
			fmt=0x4;
		} else if (std & V4L2_STD_SECAM) {
			fmt=0xc;
		}
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	}

	cx25840_and_or(client, 0x400, ~0xf, fmt);
	cx25840_vbi_setup(client);
	return 0;
}

v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
{
	/* check VID_FMT_SEL first */
	u8 fmt = cx25840_read(client, 0x400) & 0xf;

	if (!fmt) {
		/* check AFD_FMT_STAT if set to autodetect */
		fmt = cx25840_read(client, 0x40d) & 0xf;
	}

	switch (fmt) {
	case 0x1: return V4L2_STD_NTSC_M;
	case 0x2: return V4L2_STD_NTSC_M_JP;
	case 0x3: return V4L2_STD_NTSC_443;
	case 0x4: return V4L2_STD_PAL;
	case 0x5: return V4L2_STD_PAL_M;
	case 0x6: return V4L2_STD_PAL_N;
	case 0x7: return V4L2_STD_PAL_Nc;
	case 0x8: return V4L2_STD_PAL_60;
	case 0xc: return V4L2_STD_SECAM;
	default: return V4L2_STD_UNKNOWN;
	}
}

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

static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
{
	struct cx25840_state *state = i2c_get_clientdata(client);

	switch (ctrl->id) {
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	case CX25840_CID_ENABLE_PVR150_WORKAROUND:
		state->pvr150_workaround = ctrl->value;
		set_input(client, state->vid_input, state->aud_input);
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		break;

	case V4L2_CID_BRIGHTNESS:
		if (ctrl->value < 0 || ctrl->value > 255) {
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			v4l_err(client, "invalid brightness setting %d\n",
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				    ctrl->value);
			return -ERANGE;
		}

		cx25840_write(client, 0x414, ctrl->value - 128);
		break;

	case V4L2_CID_CONTRAST:
		if (ctrl->value < 0 || ctrl->value > 127) {
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			v4l_err(client, "invalid contrast setting %d\n",
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				    ctrl->value);
			return -ERANGE;
		}

		cx25840_write(client, 0x415, ctrl->value << 1);
		break;

	case V4L2_CID_SATURATION:
		if (ctrl->value < 0 || ctrl->value > 127) {
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			v4l_err(client, "invalid saturation setting %d\n",
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				    ctrl->value);
			return -ERANGE;
		}

		cx25840_write(client, 0x420, ctrl->value << 1);
		cx25840_write(client, 0x421, ctrl->value << 1);
		break;

	case V4L2_CID_HUE:
		if (ctrl->value < -127 || ctrl->value > 127) {
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			v4l_err(client, "invalid hue setting %d\n", ctrl->value);
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			return -ERANGE;
		}

		cx25840_write(client, 0x422, ctrl->value);
		break;

	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_MUTE:
		return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
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	default:
		return -EINVAL;
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	}

	return 0;
}

static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
{
	struct cx25840_state *state = i2c_get_clientdata(client);

	switch (ctrl->id) {
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	case CX25840_CID_ENABLE_PVR150_WORKAROUND:
		ctrl->value = state->pvr150_workaround;
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		break;
	case V4L2_CID_BRIGHTNESS:
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		ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
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		break;
	case V4L2_CID_CONTRAST:
		ctrl->value = cx25840_read(client, 0x415) >> 1;
		break;
	case V4L2_CID_SATURATION:
		ctrl->value = cx25840_read(client, 0x420) >> 1;
		break;
	case V4L2_CID_HUE:
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		ctrl->value = (s8)cx25840_read(client, 0x422);
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		break;
	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_MUTE:
		return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
	default:
		return -EINVAL;
	}

	return 0;
}

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

static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
{
	switch (fmt->type) {
	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
		return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
	default:
		return -EINVAL;
	}

	return 0;
}

static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
{
	struct v4l2_pix_format *pix;
	int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
	int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);

	switch (fmt->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		pix = &(fmt->fmt.pix);

		Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
		Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;

		Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
		Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;

		Vlines = pix->height + (is_pal ? 4 : 7);

		if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
		    (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
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			v4l_err(client, "%dx%d is not a valid size!\n",
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				    pix->width, pix->height);
			return -ERANGE;
		}

		HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
		VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
		VSC &= 0x1fff;

		if (pix->width >= 385)
			filter = 0;
		else if (pix->width > 192)
			filter = 1;
		else if (pix->width > 96)
			filter = 2;
		else
			filter = 3;

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		v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
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			    pix->width, pix->height, HSC, VSC);

		/* HSCALE=HSC */
		cx25840_write(client, 0x418, HSC & 0xff);
		cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
		cx25840_write(client, 0x41a, HSC >> 16);
		/* VSCALE=VSC */
		cx25840_write(client, 0x41c, VSC & 0xff);
		cx25840_write(client, 0x41d, VSC >> 8);
		/* VS_INTRLACE=1 VFILT=filter */
		cx25840_write(client, 0x41e, 0x8 | filter);
		break;

	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
		return cx25840_vbi(client, VIDIOC_S_FMT, fmt);

	case V4L2_BUF_TYPE_VBI_CAPTURE:
		return cx25840_vbi(client, VIDIOC_S_FMT, fmt);

	default:
		return -EINVAL;
	}

	return 0;
}

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

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static struct v4l2_queryctrl cx25840_qctrl[] = {
	{
		.id            = V4L2_CID_BRIGHTNESS,
		.type          = V4L2_CTRL_TYPE_INTEGER,
		.name          = "Brightness",
		.minimum       = 0,
		.maximum       = 255,
		.step          = 1,
		.default_value = 128,
		.flags         = 0,
	}, {
		.id            = V4L2_CID_CONTRAST,
		.type          = V4L2_CTRL_TYPE_INTEGER,
		.name          = "Contrast",
		.minimum       = 0,
		.maximum       = 255,
		.step          = 1,
		.default_value = 64,
		.flags         = 0,
	}, {
		.id            = V4L2_CID_SATURATION,
		.type          = V4L2_CTRL_TYPE_INTEGER,
		.name          = "Saturation",
		.minimum       = 0,
		.maximum       = 255,
		.step          = 1,
		.default_value = 64,
		.flags         = 0,
	}, {
		.id            = V4L2_CID_HUE,
		.type          = V4L2_CTRL_TYPE_INTEGER,
		.name          = "Hue",
		.minimum       = -128,
		.maximum       = 127,
		.step          = 1,
		.default_value = 0,
		.flags 	       = 0,
	}, {
		.id            = V4L2_CID_AUDIO_VOLUME,
		.type          = V4L2_CTRL_TYPE_INTEGER,
		.name          = "Volume",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535/100,
		.default_value = 58880,
		.flags         = 0,
	}, {
		.id            = V4L2_CID_AUDIO_BALANCE,
		.type          = V4L2_CTRL_TYPE_INTEGER,
		.name          = "Balance",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535/100,
		.default_value = 32768,
		.flags         = 0,
	}, {
		.id            = V4L2_CID_AUDIO_MUTE,
		.type          = V4L2_CTRL_TYPE_BOOLEAN,
		.name          = "Mute",
		.minimum       = 0,
		.maximum       = 1,
		.step          = 1,
		.default_value = 1,
		.flags         = 0,
	}, {
		.id            = V4L2_CID_AUDIO_BASS,
		.type          = V4L2_CTRL_TYPE_INTEGER,
		.name          = "Bass",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535/100,
		.default_value = 32768,
	}, {
		.id            = V4L2_CID_AUDIO_TREBLE,
		.type          = V4L2_CTRL_TYPE_INTEGER,
		.name          = "Treble",
		.minimum       = 0,
		.maximum       = 65535,
		.step          = 65535/100,
		.default_value = 32768,
	},
};

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

650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686
static int cx25840_command(struct i2c_client *client, unsigned int cmd,
			   void *arg)
{
	struct cx25840_state *state = i2c_get_clientdata(client);
	struct v4l2_tuner *vt = arg;

	switch (cmd) {
#ifdef CONFIG_VIDEO_ADV_DEBUG
	/* ioctls to allow direct access to the
	 * cx25840 registers for testing */
	case VIDIOC_INT_G_REGISTER:
	{
		struct v4l2_register *reg = arg;

		if (reg->i2c_id != I2C_DRIVERID_CX25840)
			return -EINVAL;
		reg->val = cx25840_read(client, reg->reg & 0x0fff);
		break;
	}

	case VIDIOC_INT_S_REGISTER:
	{
		struct v4l2_register *reg = arg;

		if (reg->i2c_id != I2C_DRIVERID_CX25840)
			return -EINVAL;
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;
		cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
		break;
	}
#endif

	case VIDIOC_INT_DECODE_VBI_LINE:
		return cx25840_vbi(client, cmd, arg);

	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
687
		return cx25840_audio(client, cmd, arg);
688 689

	case VIDIOC_STREAMON:
690
		v4l_dbg(1, cx25840_debug, client, "enable output\n");
691 692 693 694 695
		cx25840_write(client, 0x115, 0x8c);
		cx25840_write(client, 0x116, 0x07);
		break;

	case VIDIOC_STREAMOFF:
696
		v4l_dbg(1, cx25840_debug, client, "disable output\n");
697 698 699 700 701 702 703 704 705
		cx25840_write(client, 0x115, 0x00);
		cx25840_write(client, 0x116, 0x00);
		break;

	case VIDIOC_LOG_STATUS:
		log_status(client);
		break;

	case VIDIOC_G_CTRL:
706
		return get_v4lctrl(client, (struct v4l2_control *)arg);
707 708

	case VIDIOC_S_CTRL:
709
		return set_v4lctrl(client, (struct v4l2_control *)arg);
710

711 712 713 714 715 716 717 718 719 720 721 722 723
	case VIDIOC_QUERYCTRL:
	{
		struct v4l2_queryctrl *qc = arg;
		int i;

		for (i = 0; i < ARRAY_SIZE(cx25840_qctrl); i++)
			if (qc->id && qc->id == cx25840_qctrl[i].id) {
				memcpy(qc, &cx25840_qctrl[i], sizeof(*qc));
				return 0;
			}
		return -EINVAL;
	}

724 725 726 727 728
	case VIDIOC_G_STD:
		*(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
		break;

	case VIDIOC_S_STD:
729 730 731 732 733
		state->radio = 0;
		return set_v4lstd(client, *(v4l2_std_id *)arg);

	case AUDC_SET_RADIO:
		state->radio = 1;
734 735 736
		break;

	case VIDIOC_G_INPUT:
737
		*(int *)arg = state->vid_input;
738 739 740
		break;

	case VIDIOC_S_INPUT:
741
		return set_input(client, *(enum cx25840_video_input *)arg, state->aud_input);
742

743 744 745 746
	case VIDIOC_S_AUDIO:
	{
		struct v4l2_audio *input = arg;

747
		return set_input(client, state->vid_input, input->index);
748 749 750 751 752 753 754 755 756 757 758
	}

	case VIDIOC_G_AUDIO:
	{
		struct v4l2_audio *input = arg;

		memset(input, 0, sizeof(*input));
		input->index = state->aud_input;
		break;
	}

759 760 761 762 763 764 765 766 767 768 769
	case VIDIOC_S_FREQUENCY:
		input_change(client);
		break;

	case VIDIOC_G_TUNER:
	{
		u8 mode = cx25840_read(client, 0x804);
		u8 pref = cx25840_read(client, 0x809) & 0xf;
		u8 vpres = cx25840_read(client, 0x80a) & 0x10;
		int val = 0;

770 771 772
		if (state->radio)
			break;

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		vt->capability |=
		    V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
		    V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;

		vt->signal = vpres ? 0xffff : 0x0;

		/* get rxsubchans and audmode */
		if ((mode & 0xf) == 1)
			val |= V4L2_TUNER_SUB_STEREO;
		else
			val |= V4L2_TUNER_SUB_MONO;

		if (mode == 2 || mode == 4)
			val |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;

		if (mode & 0x10)
			val |= V4L2_TUNER_SUB_SAP;

		vt->rxsubchans = val;

		switch (pref) {
		case 0:
			vt->audmode = V4L2_TUNER_MODE_MONO;
			break;
		case 1:
		case 2:
			vt->audmode = V4L2_TUNER_MODE_LANG2;
			break;
		case 4:
		default:
			vt->audmode = V4L2_TUNER_MODE_STEREO;
		}
		break;
	}

	case VIDIOC_S_TUNER:
		switch (vt->audmode) {
		case V4L2_TUNER_MODE_MONO:
		case V4L2_TUNER_MODE_LANG1:
			/* Force PREF_MODE to MONO */
			cx25840_and_or(client, 0x809, ~0xf, 0x00);
			break;
		case V4L2_TUNER_MODE_STEREO:
			/* Force PREF_MODE to STEREO */
			cx25840_and_or(client, 0x809, ~0xf, 0x04);
			break;
		case V4L2_TUNER_MODE_LANG2:
			/* Force PREF_MODE to LANG2 */
			cx25840_and_or(client, 0x809, ~0xf, 0x01);
			break;
		}
		break;

	case VIDIOC_G_FMT:
827
		return get_v4lfmt(client, (struct v4l2_format *)arg);
828 829

	case VIDIOC_S_FMT:
830
		return set_v4lfmt(client, (struct v4l2_format *)arg);
831 832 833 834 835 836 837 838 839 840 841 842 843 844

	case VIDIOC_INT_RESET:
		cx25840_initialize(client, 0);
		break;

	case VIDIOC_INT_G_CHIP_IDENT:
		*(enum v4l2_chip_ident *)arg =
			V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
		break;

	default:
		return -EINVAL;
	}

845
	return 0;
846 847 848 849
}

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

850
static struct i2c_driver i2c_driver_cx25840;
851 852 853 854 855 856 857 858 859 860 861 862 863 864

static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
				 int kind)
{
	struct i2c_client *client;
	struct cx25840_state *state;
	u16 device_id;

	/* Check if the adapter supports the needed features
	 * Not until kernel version 2.6.11 did the bit-algo
	 * correctly report that it would do an I2C-level xfer */
	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
		return 0;

P
 
Panagiotis Issaris 已提交
865
	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
866 867 868 869 870 871 872 873
	if (client == 0)
		return -ENOMEM;

	client->addr = address;
	client->adapter = adapter;
	client->driver = &i2c_driver_cx25840;
	snprintf(client->name, sizeof(client->name) - 1, "cx25840");

874
	v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
875 876 877 878 879 880 881

	device_id = cx25840_read(client, 0x101) << 8;
	device_id |= cx25840_read(client, 0x100);

	/* The high byte of the device ID should be
	 * 0x84 if chip is present */
	if ((device_id & 0xff00) != 0x8400) {
882
		v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
883 884 885 886
		kfree(client);
		return 0;
	}

887
	v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
888 889 890 891 892 893 894 895 896 897 898 899
		    (device_id & 0xfff0) >> 4,
		    (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
		    address << 1, adapter->name);

	state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
	if (state == NULL) {
		kfree(client);
		return -ENOMEM;
	}

	i2c_set_clientdata(client, state);
	memset(state, 0, sizeof(struct cx25840_state));
900 901
	state->vid_input = CX25840_COMPOSITE7;
	state->aud_input = CX25840_AUDIO8;
902
	state->audclk_freq = 48000;
903
	state->pvr150_workaround = 0;
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	cx25840_initialize(client, 1);

	i2c_attach_client(client);

	return 0;
}

static int cx25840_attach_adapter(struct i2c_adapter *adapter)
{
	if (adapter->class & I2C_CLASS_TV_ANALOG)
		return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
	return 0;
}

static int cx25840_detach_client(struct i2c_client *client)
{
	struct cx25840_state *state = i2c_get_clientdata(client);
	int err;

	err = i2c_detach_client(client);
	if (err) {
		return err;
	}

	kfree(state);
	kfree(client);

	return 0;
}

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

937
static struct i2c_driver i2c_driver_cx25840 = {
938 939 940
	.driver = {
		.name = "cx25840",
	},
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	.id = I2C_DRIVERID_CX25840,
	.attach_adapter = cx25840_attach_adapter,
	.detach_client = cx25840_detach_client,
	.command = cx25840_command,
};


static int __init m__init(void)
{
	return i2c_add_driver(&i2c_driver_cx25840);
}

static void __exit m__exit(void)
{
	i2c_del_driver(&i2c_driver_cx25840);
}

module_init(m__init);
module_exit(m__exit);

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

static void log_status(struct i2c_client *client)
{
	static const char *const fmt_strs[] = {
		"0x0",
		"NTSC-M", "NTSC-J", "NTSC-4.43",
		"PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
		"0x9", "0xA", "0xB",
		"SECAM",
		"0xD", "0xE", "0xF"
	};

	struct cx25840_state *state = i2c_get_clientdata(client);
	u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
	u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
	u8 gen_stat1 = cx25840_read(client, 0x40d);
	u8 download_ctl = cx25840_read(client, 0x803);
	u8 mod_det_stat0 = cx25840_read(client, 0x804);
	u8 mod_det_stat1 = cx25840_read(client, 0x805);
	u8 audio_config = cx25840_read(client, 0x808);
	u8 pref_mode = cx25840_read(client, 0x809);
	u8 afc0 = cx25840_read(client, 0x80b);
	u8 mute_ctl = cx25840_read(client, 0x8d3);
985 986
	int vid_input = state->vid_input;
	int aud_input = state->aud_input;
987 988
	char *p;

989
	v4l_info(client, "Video signal:              %spresent\n",
990
		    (microctrl_vidfmt & 0x10) ? "" : "not ");
991
	v4l_info(client, "Detected format:           %s\n",
992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
		    fmt_strs[gen_stat1 & 0xf]);

	switch (mod_det_stat0) {
	case 0x00: p = "mono"; break;
	case 0x01: p = "stereo"; break;
	case 0x02: p = "dual"; break;
	case 0x04: p = "tri"; break;
	case 0x10: p = "mono with SAP"; break;
	case 0x11: p = "stereo with SAP"; break;
	case 0x12: p = "dual with SAP"; break;
	case 0x14: p = "tri with SAP"; break;
	case 0xfe: p = "forced mode"; break;
	default: p = "not defined";
	}
1006
	v4l_info(client, "Detected audio mode:       %s\n", p);
1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031

	switch (mod_det_stat1) {
	case 0x00: p = "not defined"; break;
	case 0x01: p = "EIAJ"; break;
	case 0x02: p = "A2-M"; break;
	case 0x03: p = "A2-BG"; break;
	case 0x04: p = "A2-DK1"; break;
	case 0x05: p = "A2-DK2"; break;
	case 0x06: p = "A2-DK3"; break;
	case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
	case 0x08: p = "AM-L"; break;
	case 0x09: p = "NICAM-BG"; break;
	case 0x0a: p = "NICAM-DK"; break;
	case 0x0b: p = "NICAM-I"; break;
	case 0x0c: p = "NICAM-L"; break;
	case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
	case 0x0e: p = "IF FM Radio"; break;
	case 0x0f: p = "BTSC"; break;
	case 0x10: p = "high-deviation FM"; break;
	case 0x11: p = "very high-deviation FM"; break;
	case 0xfd: p = "unknown audio standard"; break;
	case 0xfe: p = "forced audio standard"; break;
	case 0xff: p = "no detected audio standard"; break;
	default: p = "not defined";
	}
1032 1033
	v4l_info(client, "Detected audio standard:   %s\n", p);
	v4l_info(client, "Audio muted:               %s\n",
1034
		    (mute_ctl & 0x2) ? "yes" : "no");
1035
	v4l_info(client, "Audio microcontroller:     %s\n",
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056
		    (download_ctl & 0x10) ? "running" : "stopped");

	switch (audio_config >> 4) {
	case 0x00: p = "undefined"; break;
	case 0x01: p = "BTSC"; break;
	case 0x02: p = "EIAJ"; break;
	case 0x03: p = "A2-M"; break;
	case 0x04: p = "A2-BG"; break;
	case 0x05: p = "A2-DK1"; break;
	case 0x06: p = "A2-DK2"; break;
	case 0x07: p = "A2-DK3"; break;
	case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
	case 0x09: p = "AM-L"; break;
	case 0x0a: p = "NICAM-BG"; break;
	case 0x0b: p = "NICAM-DK"; break;
	case 0x0c: p = "NICAM-I"; break;
	case 0x0d: p = "NICAM-L"; break;
	case 0x0e: p = "FM radio"; break;
	case 0x0f: p = "automatic detection"; break;
	default: p = "undefined";
	}
1057
	v4l_info(client, "Configured audio standard: %s\n", p);
1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073

	if ((audio_config >> 4) < 0xF) {
		switch (audio_config & 0xF) {
		case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
		case 0x01: p = "MONO2 (LANGUAGE B)"; break;
		case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
		case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
		case 0x04: p = "STEREO"; break;
		case 0x05: p = "DUAL1 (AB)"; break;
		case 0x06: p = "DUAL2 (AC) (FM)"; break;
		case 0x07: p = "DUAL3 (BC) (FM)"; break;
		case 0x08: p = "DUAL4 (AC) (AM)"; break;
		case 0x09: p = "DUAL5 (BC) (AM)"; break;
		case 0x0a: p = "SAP"; break;
		default: p = "undefined";
		}
1074
		v4l_info(client, "Configured audio mode:     %s\n", p);
1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
	} else {
		switch (audio_config & 0xF) {
		case 0x00: p = "BG"; break;
		case 0x01: p = "DK1"; break;
		case 0x02: p = "DK2"; break;
		case 0x03: p = "DK3"; break;
		case 0x04: p = "I"; break;
		case 0x05: p = "L"; break;
		case 0x06: p = "BTSC"; break;
		case 0x07: p = "EIAJ"; break;
		case 0x08: p = "A2-M"; break;
		case 0x09: p = "FM Radio"; break;
		case 0x0f: p = "automatic standard and mode detection"; break;
		default: p = "undefined";
		}
1090
		v4l_info(client, "Configured audio system:   %s\n", p);
1091 1092
	}

1093
	v4l_info(client, "Specified standard:        %s\n",
1094 1095
		    vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");

1096 1097
	if (vid_input >= CX25840_COMPOSITE1 &&
	    vid_input <= CX25840_COMPOSITE8) {
1098
		v4l_info(client, "Specified video input:     Composite %d\n",
1099 1100
			vid_input - CX25840_COMPOSITE1 + 1);
	} else {
1101
		v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1102 1103 1104
			(vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
	}
	if (aud_input) {
1105
		v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1106
	} else {
1107
		v4l_info(client, "Specified audio input:     External\n");
1108 1109
	}

1110
	v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122

	switch (pref_mode & 0xf) {
	case 0: p = "mono/language A"; break;
	case 1: p = "language B"; break;
	case 2: p = "language C"; break;
	case 3: p = "analog fallback"; break;
	case 4: p = "stereo"; break;
	case 5: p = "language AC"; break;
	case 6: p = "language BC"; break;
	case 7: p = "language AB"; break;
	default: p = "undefined";
	}
1123
	v4l_info(client, "Preferred audio mode:      %s\n", p);
1124 1125 1126 1127 1128 1129 1130 1131

	if ((audio_config & 0xf) == 0xf) {
		switch ((afc0 >> 3) & 0x3) {
		case 0: p = "system DK"; break;
		case 1: p = "system L"; break;
		case 2: p = "autodetect"; break;
		default: p = "undefined";
		}
1132
		v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1133 1134 1135 1136 1137 1138 1139 1140 1141

		switch (afc0 & 0x7) {
		case 0: p = "chroma"; break;
		case 1: p = "BTSC"; break;
		case 2: p = "EIAJ"; break;
		case 3: p = "A2-M"; break;
		case 4: p = "autodetect"; break;
		default: p = "undefined";
		}
1142
		v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1143 1144
	}
}