cx25840-core.c 31.6 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>.
 *
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 * NTSC sliced VBI support by Christopher Neufeld <television@cneufeld.ca>
 * with additional fixes by Hans Verkuil <hverkuil@xs4all.nl>.
 *
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 * 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/v4l2-common.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/cx25840.h>
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#include "cx25840-core.h"
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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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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;

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

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int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
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		   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_audio_status(struct i2c_client *client);
static void log_video_status(struct i2c_client *client);
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/* ----------------------------------------------------------------------- */

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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);
}

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static void cx25836_initialize(struct i2c_client *client)
{
	/* reset configuration is described on page 3-77 of the CX25836 datasheet */
	/* 2. */
	cx25840_and_or(client, 0x000, ~0x01, 0x01);
	cx25840_and_or(client, 0x000, ~0x01, 0x00);
	/* 3a. */
	cx25840_and_or(client, 0x15a, ~0x70, 0x00);
	/* 3b. */
	cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
	/* 3c. */
	cx25840_and_or(client, 0x159, ~0x02, 0x02);
	/* 3d. */
	/* There should be a 10-us delay here, but since the
	   i2c bus already has a 10-us delay we don't need to do
	   anything */
	/* 3e. */
	cx25840_and_or(client, 0x159, ~0x02, 0x00);
	/* 3f. */
	cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
	/* 3g. */
	cx25840_and_or(client, 0x159, ~0x01, 0x00);
	cx25840_and_or(client, 0x159, ~0x01, 0x01);
	/* 3h. */
	cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
}

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static void cx25840_initialize(struct i2c_client *client)
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{
	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. */
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	cx25840_loadfw(client);
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	/* 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. */
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	cx25840_and_or(client, 0x401, ~0x18, 0);
	cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
	/* steps 8c and 8d are done in change_input() */
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	/* 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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	/* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
	if (std & V4L2_STD_SECAM) {
		cx25840_write(client, 0x402, 0);
	}
	else {
		cx25840_write(client, 0x402, 0x04);
		cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
	}
	cx25840_and_or(client, 0x401, ~0x60, 0);
	cx25840_and_or(client, 0x401, ~0x60, 0x60);

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	if (std & V4L2_STD_525_60) {
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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). */
		int hw_fix = state->pvr150_workaround;

		if (std == V4L2_STD_NTSC_M_JP) {
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			/* Japan uses EIAJ audio standard */
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			cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
		} else if (std == V4L2_STD_NTSC_M_KR) {
			/* South Korea uses A2 audio standard */
			cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
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		} else {
			/* Others use the BTSC audio standard */
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			cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
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		}
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		cx25840_write(client, 0x80b, 0x00);
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	} else 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);
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	}

	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;
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	if (!state->is_cx25836) {
		cx25840_audio_set_path(client);
		input_change(client);
	}
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	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 */
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	if (std == V4L2_STD_NTSC_M_JP) {
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		fmt=0x2;
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	} else if (std == V4L2_STD_NTSC_443) {
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		fmt=0x3;
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	} else if (std == V4L2_STD_PAL_M) {
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		fmt=0x5;
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	} else if (std == V4L2_STD_PAL_N) {
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		fmt=0x6;
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	} else if (std == V4L2_STD_PAL_Nc) {
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		fmt=0x7;
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	} else if (std == V4L2_STD_PAL_60) {
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		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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	}

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	v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);

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	/* Follow step 9 of section 3.16 in the cx25840 datasheet.
	   Without this PAL may display a vertical ghosting effect.
	   This happens for example with the Yuan MPC622. */
	if (fmt >= 4 && fmt < 8) {
		/* Set format to NTSC-M */
		cx25840_and_or(client, 0x400, ~0xf, 1);
		/* Turn off LCOMB */
		cx25840_and_or(client, 0x47b, ~6, 0);
	}
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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)
{
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	struct cx25840_state *state = i2c_get_clientdata(client);
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	/* 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) {
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	case 0x1:
	{
		/* if the audio std is A2-M, then this is the South Korean
		   NTSC standard */
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		if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
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			return V4L2_STD_NTSC_M_KR;
		return V4L2_STD_NTSC_M;
	}
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	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:
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		if (state->is_cx25836)
			return -EINVAL;
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		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:
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		if (state->is_cx25836)
			return -EINVAL;
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		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;
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	int is_50Hz = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
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	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;

569
		Vlines = pix->height + (is_50Hz ? 4 : 7);
570 571 572

		if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
		    (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
573
			v4l_err(client, "%dx%d is not a valid size!\n",
574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590
				    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;

591
		v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624
			    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;
}

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

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;
625
	struct v4l2_routing *route = arg;
626

627 628 629 630 631 632 633 634 635 636 637 638 639
	/* ignore these commands */
	switch (cmd) {
		case TUNER_SET_TYPE_ADDR:
			return 0;
	}

	if (!state->is_initialized) {
		v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
		/* initialize on first use */
		state->is_initialized = 1;
		if (state->is_cx25836)
			cx25836_initialize(client);
		else
640
			cx25840_initialize(client);
641 642
	}

643 644 645 646
	switch (cmd) {
#ifdef CONFIG_VIDEO_ADV_DEBUG
	/* ioctls to allow direct access to the
	 * cx25840 registers for testing */
647 648
	case VIDIOC_DBG_G_REGISTER:
	case VIDIOC_DBG_S_REGISTER:
649 650 651
	{
		struct v4l2_register *reg = arg;

652
		if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
653 654 655
			return -EINVAL;
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;
656 657 658 659
		if (cmd == VIDIOC_DBG_G_REGISTER)
			reg->val = cx25840_read(client, reg->reg & 0x0fff);
		else
			cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
660 661 662 663 664 665 666 667
		break;
	}
#endif

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

	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
668
		return cx25840_audio(client, cmd, arg);
669 670

	case VIDIOC_STREAMON:
671
		v4l_dbg(1, cx25840_debug, client, "enable output\n");
672 673
		cx25840_write(client, 0x115, state->is_cx25836 ? 0x0c : 0x8c);
		cx25840_write(client, 0x116, state->is_cx25836 ? 0x04 : 0x07);
674 675 676
		break;

	case VIDIOC_STREAMOFF:
677
		v4l_dbg(1, cx25840_debug, client, "disable output\n");
678 679 680 681 682
		cx25840_write(client, 0x115, 0x00);
		cx25840_write(client, 0x116, 0x00);
		break;

	case VIDIOC_LOG_STATUS:
683 684 685
		log_video_status(client);
		if (!state->is_cx25836)
			log_audio_status(client);
686 687 688
		break;

	case VIDIOC_G_CTRL:
689
		return get_v4lctrl(client, (struct v4l2_control *)arg);
690 691

	case VIDIOC_S_CTRL:
692
		return set_v4lctrl(client, (struct v4l2_control *)arg);
693

694 695 696 697
	case VIDIOC_QUERYCTRL:
	{
		struct v4l2_queryctrl *qc = arg;

698 699 700 701 702 703 704 705 706
		switch (qc->id) {
			case V4L2_CID_BRIGHTNESS:
			case V4L2_CID_CONTRAST:
			case V4L2_CID_SATURATION:
			case V4L2_CID_HUE:
				return v4l2_ctrl_query_fill_std(qc);
			default:
				break;
		}
707 708 709
		if (state->is_cx25836)
			return -EINVAL;

710 711 712 713 714 715 716 717 718 719
		switch (qc->id) {
			case V4L2_CID_AUDIO_VOLUME:
			case V4L2_CID_AUDIO_MUTE:
			case V4L2_CID_AUDIO_BALANCE:
			case V4L2_CID_AUDIO_BASS:
			case V4L2_CID_AUDIO_TREBLE:
				return v4l2_ctrl_query_fill_std(qc);
			default:
				return -EINVAL;
		}
720 721 722
		return -EINVAL;
	}

723 724 725 726 727
	case VIDIOC_G_STD:
		*(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
		break;

	case VIDIOC_S_STD:
728 729 730 731 732
		state->radio = 0;
		return set_v4lstd(client, *(v4l2_std_id *)arg);

	case AUDC_SET_RADIO:
		state->radio = 1;
733 734
		break;

735 736 737
	case VIDIOC_INT_G_VIDEO_ROUTING:
		route->input = state->vid_input;
		route->output = 0;
738 739
		break;

740 741
	case VIDIOC_INT_S_VIDEO_ROUTING:
		return set_input(client, route->input, state->aud_input);
742

743
	case VIDIOC_INT_G_AUDIO_ROUTING:
744 745
		if (state->is_cx25836)
			return -EINVAL;
746 747 748
		route->input = state->aud_input;
		route->output = 0;
		break;
749

750
	case VIDIOC_INT_S_AUDIO_ROUTING:
751 752
		if (state->is_cx25836)
			return -EINVAL;
753
		return set_input(client, state->vid_input, route->input);
754

755
	case VIDIOC_S_FREQUENCY:
756 757 758
		if (!state->is_cx25836) {
			input_change(client);
		}
759 760 761 762
		break;

	case VIDIOC_G_TUNER:
	{
763 764
		u8 vpres = cx25840_read(client, 0x40e) & 0x20;
		u8 mode;
765 766
		int val = 0;

767 768 769
		if (state->radio)
			break;

770 771 772 773
		vt->signal = vpres ? 0xffff : 0x0;
		if (state->is_cx25836)
			break;

774 775 776 777
		vt->capability |=
		    V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
		    V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;

778
		mode = cx25840_read(client, 0x804);
779 780 781 782 783 784 785 786

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

		if (mode == 2 || mode == 4)
787
			val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
788 789 790 791 792

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

		vt->rxsubchans = val;
793
		vt->audmode = state->audmode;
794 795 796 797
		break;
	}

	case VIDIOC_S_TUNER:
798
		if (state->radio || state->is_cx25836)
799 800
			break;

801 802
		switch (vt->audmode) {
		case V4L2_TUNER_MODE_MONO:
803 804 805
			/* mono      -> mono
			   stereo    -> mono
			   bilingual -> lang1 */
806 807
			cx25840_and_or(client, 0x809, ~0xf, 0x00);
			break;
808
		case V4L2_TUNER_MODE_STEREO:
809 810 811 812
		case V4L2_TUNER_MODE_LANG1:
			/* mono      -> mono
			   stereo    -> stereo
			   bilingual -> lang1 */
813 814
			cx25840_and_or(client, 0x809, ~0xf, 0x04);
			break;
815
		case V4L2_TUNER_MODE_LANG1_LANG2:
816 817 818 819 820
			/* mono      -> mono
			   stereo    -> stereo
			   bilingual -> lang1/lang2 */
			cx25840_and_or(client, 0x809, ~0xf, 0x07);
			break;
821
		case V4L2_TUNER_MODE_LANG2:
822
			/* mono      -> mono
823
			   stereo    -> stereo
824
			   bilingual -> lang2 */
825 826
			cx25840_and_or(client, 0x809, ~0xf, 0x01);
			break;
827 828
		default:
			return -EINVAL;
829
		}
830
		state->audmode = vt->audmode;
831 832 833
		break;

	case VIDIOC_G_FMT:
834
		return get_v4lfmt(client, (struct v4l2_format *)arg);
835 836

	case VIDIOC_S_FMT:
837
		return set_v4lfmt(client, (struct v4l2_format *)arg);
838 839

	case VIDIOC_INT_RESET:
840 841 842
		if (state->is_cx25836)
			cx25836_initialize(client);
		else
843
			cx25840_initialize(client);
844 845
		break;

846 847
	case VIDIOC_G_CHIP_IDENT:
		return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
848 849 850 851 852

	default:
		return -EINVAL;
	}

853
	return 0;
854 855 856 857
}

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

858
static struct i2c_driver i2c_driver_cx25840;
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;
865
	u32 id;
866 867 868 869 870 871 872 873
	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;

874 875
	state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
	if (state == 0)
876 877
		return -ENOMEM;

878
	client = &state->c;
879 880 881 882 883
	client->addr = address;
	client->adapter = adapter;
	client->driver = &i2c_driver_cx25840;
	snprintf(client->name, sizeof(client->name) - 1, "cx25840");

884
	v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
885 886 887 888 889

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

	/* The high byte of the device ID should be
890 891 892 893 894 895 896 897 898 899
	 * 0x83 for the cx2583x and 0x84 for the cx2584x */
	if ((device_id & 0xff00) == 0x8300) {
		id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
		state->is_cx25836 = 1;
	}
	else if ((device_id & 0xff00) == 0x8400) {
		id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
		state->is_cx25836 = 0;
	}
	else {
900
		v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
901
		kfree(state);
902 903 904
		return 0;
	}

905 906
	/* Note: revision '(device_id & 0x0f) == 2' was never built. The
	   marking skips from 0x1 == 22 to 0x3 == 23. */
907
	v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
908
		    (device_id & 0xfff0) >> 4,
909
		    (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
910 911 912
		    address << 1, adapter->name);

	i2c_set_clientdata(client, state);
913 914
	state->vid_input = CX25840_COMPOSITE7;
	state->aud_input = CX25840_AUDIO8;
915
	state->audclk_freq = 48000;
916
	state->pvr150_workaround = 0;
917
	state->audmode = V4L2_TUNER_MODE_LANG1;
918
	state->unmute_volume = -1;
919
	state->vbi_line_offset = 8;
920
	state->id = id;
921
	state->rev = device_id;
922

923 924
	i2c_attach_client(client);

925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951
	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);

	return 0;
}

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

952
static struct i2c_driver i2c_driver_cx25840 = {
953 954 955
	.driver = {
		.name = "cx25840",
	},
956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977
	.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);

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

978
static void log_video_status(struct i2c_client *client)
979 980 981 982 983 984 985 986 987 988 989 990 991
{
	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 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
	u8 gen_stat1 = cx25840_read(client, 0x40d);
992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019
	u8 gen_stat2 = cx25840_read(client, 0x40e);
	int vid_input = state->vid_input;

	v4l_info(client, "Video signal:              %spresent\n",
		    (gen_stat2 & 0x20) ? "" : "not ");
	v4l_info(client, "Detected format:           %s\n",
		    fmt_strs[gen_stat1 & 0xf]);

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

	if (vid_input >= CX25840_COMPOSITE1 &&
	    vid_input <= CX25840_COMPOSITE8) {
		v4l_info(client, "Specified video input:     Composite %d\n",
			vid_input - CX25840_COMPOSITE1 + 1);
	} else {
		v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
			(vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
	}

	v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
}

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

static void log_audio_status(struct i2c_client *client)
{
	struct cx25840_state *state = i2c_get_clientdata(client);
1020 1021 1022 1023 1024 1025 1026
	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);
1027
	int aud_input = state->aud_input;
1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041
	char *p;

	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";
	}
1042
	v4l_info(client, "Detected audio mode:       %s\n", p);
1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067

	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";
	}
1068 1069
	v4l_info(client, "Detected audio standard:   %s\n", p);
	v4l_info(client, "Audio muted:               %s\n",
1070
		    (state->unmute_volume >= 0) ? "yes" : "no");
1071
	v4l_info(client, "Audio microcontroller:     %s\n",
1072 1073
		    (download_ctl & 0x10) ?
				((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093

	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";
	}
1094
	v4l_info(client, "Configured audio standard: %s\n", p);
1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110

	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";
		}
1111
		v4l_info(client, "Configured audio mode:     %s\n", p);
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126
	} 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";
		}
1127
		v4l_info(client, "Configured audio system:   %s\n", p);
1128 1129
	}

1130
	if (aud_input) {
1131
		v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1132
	} else {
1133
		v4l_info(client, "Specified audio input:     External\n");
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146
	}

	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";
	}
1147
	v4l_info(client, "Preferred audio mode:      %s\n", p);
1148 1149 1150 1151 1152 1153 1154 1155

	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";
		}
1156
		v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1157 1158 1159 1160 1161 1162 1163 1164 1165

		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";
		}
1166
		v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1167 1168
	}
}