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Commit c7c54a98 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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[media] sony-btf-mpx: the MPX driver for the sony BTF PAL/SECAM tuner 



The Sony BTF PG472Z has an internal MPX to deal with mono/stereo/bilingual
audio. This is split off from the wis-sony-tuner driver that is part of
the go7007 driver as it should be a separate i2c sub-device driver.
The wis-sony-tuner is really three i2c devices: a standard tuner, a tda9887
compatible demodulator and this mpx. After this patch the wis-sony-tuner
can be replaced by this driver and the standard tuner driver.

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent e4d2a616

drivers/media/i2c/Kconfig

+10 −1
Original line number Diff line number Diff line
@@ -133,7 +133,7 @@ config VIDEO_WM8739 
	  module will be called wm8739.



config VIDEO_VP27SMPX

	tristate "Panasonic VP27s internal MPX"

	tristate "Panasonic VP27's internal MPX"

	depends on VIDEO_V4L2 && I2C

	---help---

	  Support for the internal MPX of the Panasonic VP27s tuner.
@@ -141,6 +141,15 @@ config VIDEO_VP27SMPX 
	  To compile this driver as a module, choose M here: the

	  module will be called vp27smpx.



config VIDEO_SONY_BTF_MPX

	tristate "Sony BTF's internal MPX"

	depends on VIDEO_V4L2 && I2C

	help

	  Support for the internal MPX of the Sony BTF-PG472Z tuner.



	  To compile this driver as a module, choose M here: the

	  module will be called sony-btf-mpx.



comment "RDS decoders"



config VIDEO_SAA6588

drivers/media/i2c/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -44,6 +44,7 @@ obj-$(CONFIG_VIDEO_TLV320AIC23B) += tlv320aic23b.o 
obj-$(CONFIG_VIDEO_WM8775) += wm8775.o

obj-$(CONFIG_VIDEO_WM8739) += wm8739.o

obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o

obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony-btf-mpx.o

obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o

obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o

obj-$(CONFIG_VIDEO_OV7670) 	+= ov7670.o

drivers/media/i2c/sony-btf-mpx.c

0 → 100644
+399 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2005-2006 Micronas USA Inc.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License (Version 2) as

 * published by the Free Software Foundation.

 *

 * 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., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.

 */



#include <linux/module.h>

#include <linux/init.h>

#include <linux/i2c.h>

#include <linux/videodev2.h>

#include <media/tuner.h>

#include <media/v4l2-common.h>

#include <media/v4l2-ioctl.h>

#include <media/v4l2-device.h>

#include <linux/slab.h>



MODULE_DESCRIPTION("sony-btf-mpx driver");

MODULE_LICENSE("GPL v2");



static int debug;

module_param(debug, int, 0644);

MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on\n");



/* #define MPX_DEBUG */



/*

 * Note:

 *

 * AS(IF/MPX) pin:      LOW      HIGH/OPEN

 * IF/MPX address:   0x42/0x40   0x43/0x44

 */





static int force_mpx_mode = -1;

module_param(force_mpx_mode, int, 0644);



struct sony_btf_mpx {

	struct v4l2_subdev sd;

	int mpxmode;

	u32 audmode;

};



static inline struct sony_btf_mpx *to_state(struct v4l2_subdev *sd)

{

	return container_of(sd, struct sony_btf_mpx, sd);

}



static int mpx_write(struct i2c_client *client, int dev, int addr, int val)

{

	u8 buffer[5];

	struct i2c_msg msg;



	buffer[0] = dev;

	buffer[1] = addr >> 8;

	buffer[2] = addr & 0xff;

	buffer[3] = val >> 8;

	buffer[4] = val & 0xff;

	msg.addr = client->addr;

	msg.flags = 0;

	msg.len = 5;

	msg.buf = buffer;

	i2c_transfer(client->adapter, &msg, 1);

	return 0;

}



/*

 * MPX register values for the BTF-PG472Z:

 *

 *                                 FM_     NICAM_  SCART_

 *          MODUS  SOURCE    ACB   PRESCAL PRESCAL PRESCAL SYSTEM  VOLUME

 *         10/0030 12/0008 12/0013 12/000E 12/0010 12/0000 10/0020 12/0000

 *         ---------------------------------------------------------------

 * Auto     1003    0020    0100    2603    5000    XXXX    0001    7500

 *

 * B/G

 *  Mono    1003    0020    0100    2603    5000    XXXX    0003    7500

 *  A2      1003    0020    0100    2601    5000    XXXX    0003    7500

 *  NICAM   1003    0120    0100    2603    5000    XXXX    0008    7500

 *

 * I

 *  Mono    1003    0020    0100    2603    7900    XXXX    000A    7500

 *  NICAM   1003    0120    0100    2603    7900    XXXX    000A    7500

 *

 * D/K

 *  Mono    1003    0020    0100    2603    5000    XXXX    0004    7500

 *  A2-1    1003    0020    0100    2601    5000    XXXX    0004    7500

 *  A2-2    1003    0020    0100    2601    5000    XXXX    0005    7500

 *  A2-3    1003    0020    0100    2601    5000    XXXX    0007    7500

 *  NICAM   1003    0120    0100    2603    5000    XXXX    000B    7500

 *

 * L/L'

 *  Mono    0003    0200    0100    7C03    5000    2200    0009    7500

 *  NICAM   0003    0120    0100    7C03    5000    XXXX    0009    7500

 *

 * M

 *  Mono    1003    0200    0100    2B03    5000    2B00    0002    7500

 *

 * For Asia, replace the 0x26XX in FM_PRESCALE with 0x14XX.

 *

 * Bilingual selection in A2/NICAM:

 *

 *         High byte of SOURCE     Left chan   Right chan

 *                 0x01              MAIN         SUB

 *                 0x03              MAIN         MAIN

 *                 0x04              SUB          SUB

 *

 * Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or

 * 0x00 (all other bands).  Force mono in A2 with FMONO_A2:

 *

 *                      FMONO_A2

 *                      10/0022

 *                      --------

 *     Forced mono ON     07F0

 *     Forced mono OFF    0190

 */



static const struct {

	enum { AUD_MONO, AUD_A2, AUD_NICAM, AUD_NICAM_L } audio_mode;

	u16 modus;

	u16 source;

	u16 acb;

	u16 fm_prescale;

	u16 nicam_prescale;

	u16 scart_prescale;

	u16 system;

	u16 volume;

} mpx_audio_modes[] = {

	/* Auto */	{ AUD_MONO,	0x1003, 0x0020, 0x0100, 0x2603,

					0x5000, 0x0000, 0x0001, 0x7500 },

	/* B/G Mono */	{ AUD_MONO,	0x1003, 0x0020, 0x0100, 0x2603,

					0x5000, 0x0000, 0x0003, 0x7500 },

	/* B/G A2 */	{ AUD_A2,	0x1003, 0x0020, 0x0100, 0x2601,

					0x5000, 0x0000, 0x0003, 0x7500 },

	/* B/G NICAM */ { AUD_NICAM,	0x1003, 0x0120, 0x0100, 0x2603,

					0x5000, 0x0000, 0x0008, 0x7500 },

	/* I Mono */	{ AUD_MONO,	0x1003, 0x0020, 0x0100, 0x2603,

					0x7900, 0x0000, 0x000A, 0x7500 },

	/* I NICAM */	{ AUD_NICAM,	0x1003, 0x0120, 0x0100, 0x2603,

					0x7900, 0x0000, 0x000A, 0x7500 },

	/* D/K Mono */	{ AUD_MONO,	0x1003, 0x0020, 0x0100, 0x2603,

					0x5000, 0x0000, 0x0004, 0x7500 },

	/* D/K A2-1 */	{ AUD_A2,	0x1003, 0x0020, 0x0100, 0x2601,

					0x5000, 0x0000, 0x0004, 0x7500 },

	/* D/K A2-2 */	{ AUD_A2,	0x1003, 0x0020, 0x0100, 0x2601,

					0x5000, 0x0000, 0x0005, 0x7500 },

	/* D/K A2-3 */	{ AUD_A2,	0x1003, 0x0020, 0x0100, 0x2601,

					0x5000, 0x0000, 0x0007, 0x7500 },

	/* D/K NICAM */	{ AUD_NICAM,	0x1003, 0x0120, 0x0100, 0x2603,

					0x5000, 0x0000, 0x000B, 0x7500 },

	/* L/L' Mono */	{ AUD_MONO,	0x0003, 0x0200, 0x0100, 0x7C03,

					0x5000, 0x2200, 0x0009, 0x7500 },

	/* L/L' NICAM */{ AUD_NICAM_L,	0x0003, 0x0120, 0x0100, 0x7C03,

					0x5000, 0x0000, 0x0009, 0x7500 },

};



#define MPX_NUM_MODES	ARRAY_SIZE(mpx_audio_modes)



static int mpx_setup(struct sony_btf_mpx *t)

{

	struct i2c_client *client = v4l2_get_subdevdata(&t->sd);

	u16 source = 0;

	u8 buffer[3];

	struct i2c_msg msg;

	int mode = t->mpxmode;



	/* reset MPX */

	buffer[0] = 0x00;

	buffer[1] = 0x80;

	buffer[2] = 0x00;

	msg.addr = client->addr;

	msg.flags = 0;

	msg.len = 3;

	msg.buf = buffer;

	i2c_transfer(client->adapter, &msg, 1);

	buffer[1] = 0x00;

	i2c_transfer(client->adapter, &msg, 1);



	if (t->audmode != V4L2_TUNER_MODE_MONO)

		mode++;



	if (mpx_audio_modes[mode].audio_mode != AUD_MONO) {

		switch (t->audmode) {

		case V4L2_TUNER_MODE_MONO:

			switch (mpx_audio_modes[mode].audio_mode) {

			case AUD_A2:

				source = mpx_audio_modes[mode].source;

				break;

			case AUD_NICAM:

				source = 0x0000;

				break;

			case AUD_NICAM_L:

				source = 0x0200;

				break;

			default:

				break;

			}

			break;

		case V4L2_TUNER_MODE_STEREO:

			source = mpx_audio_modes[mode].source;

			break;

		case V4L2_TUNER_MODE_LANG1:

			source = 0x0300;

			break;

		case V4L2_TUNER_MODE_LANG2:

			source = 0x0400;

			break;

		}

		source |= mpx_audio_modes[mode].source & 0x00ff;

	} else

		source = mpx_audio_modes[mode].source;



	mpx_write(client, 0x10, 0x0030, mpx_audio_modes[mode].modus);

	mpx_write(client, 0x12, 0x0008, source);

	mpx_write(client, 0x12, 0x0013, mpx_audio_modes[mode].acb);

	mpx_write(client, 0x12, 0x000e,

			mpx_audio_modes[mode].fm_prescale);

	mpx_write(client, 0x12, 0x0010,

			mpx_audio_modes[mode].nicam_prescale);

	mpx_write(client, 0x12, 0x000d,

			mpx_audio_modes[mode].scart_prescale);

	mpx_write(client, 0x10, 0x0020, mpx_audio_modes[mode].system);

	mpx_write(client, 0x12, 0x0000, mpx_audio_modes[mode].volume);

	if (mpx_audio_modes[mode].audio_mode == AUD_A2)

		mpx_write(client, 0x10, 0x0022,

			t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190);



#ifdef MPX_DEBUG

	{

		u8 buf1[3], buf2[2];

		struct i2c_msg msgs[2];



		v4l2_info(client,

			"MPX registers: %04x %04x %04x %04x %04x %04x %04x %04x\n",

			mpx_audio_modes[mode].modus,

			source,

			mpx_audio_modes[mode].acb,

			mpx_audio_modes[mode].fm_prescale,

			mpx_audio_modes[mode].nicam_prescale,

			mpx_audio_modes[mode].scart_prescale,

			mpx_audio_modes[mode].system,

			mpx_audio_modes[mode].volume);

		buf1[0] = 0x11;

		buf1[1] = 0x00;

		buf1[2] = 0x7e;

		msgs[0].addr = client->addr;

		msgs[0].flags = 0;

		msgs[0].len = 3;

		msgs[0].buf = buf1;

		msgs[1].addr = client->addr;

		msgs[1].flags = I2C_M_RD;

		msgs[1].len = 2;

		msgs[1].buf = buf2;

		i2c_transfer(client->adapter, msgs, 2);

		v4l2_info(client, "MPX system: %02x%02x\n",

				buf2[0], buf2[1]);

		buf1[0] = 0x11;

		buf1[1] = 0x02;

		buf1[2] = 0x00;

		i2c_transfer(client->adapter, msgs, 2);

		v4l2_info(client, "MPX status: %02x%02x\n",

				buf2[0], buf2[1]);

	}

#endif

	return 0;

}





static int sony_btf_mpx_s_std(struct v4l2_subdev *sd, v4l2_std_id std)

{

	struct sony_btf_mpx *t = to_state(sd);

	int default_mpx_mode = 0;



	if (std & V4L2_STD_PAL_BG)

		default_mpx_mode = 1;

	else if (std & V4L2_STD_PAL_I)

		default_mpx_mode = 4;

	else if (std & V4L2_STD_PAL_DK)

		default_mpx_mode = 6;

	else if (std & V4L2_STD_SECAM_L)

		default_mpx_mode = 11;



	if (default_mpx_mode != t->mpxmode) {

		t->mpxmode = default_mpx_mode;

		mpx_setup(t);

	}

	return 0;

}



static int sony_btf_mpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)

{

	struct sony_btf_mpx *t = to_state(sd);



	vt->capability = V4L2_TUNER_CAP_NORM |

		V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |

		V4L2_TUNER_CAP_LANG2;

	vt->rxsubchans = V4L2_TUNER_SUB_MONO |

		V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 |

		V4L2_TUNER_SUB_LANG2;

	vt->audmode = t->audmode;

	return 0;

}



static int sony_btf_mpx_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)

{

	struct sony_btf_mpx *t = to_state(sd);



	if (vt->type != V4L2_TUNER_ANALOG_TV)

		return -EINVAL;



	if (vt->audmode != t->audmode) {

		t->audmode = vt->audmode;

		mpx_setup(t);

	}

	return 0;

}



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



static const struct v4l2_subdev_core_ops sony_btf_mpx_core_ops = {

	.s_std = sony_btf_mpx_s_std,

};



static const struct v4l2_subdev_tuner_ops sony_btf_mpx_tuner_ops = {

	.s_tuner = sony_btf_mpx_s_tuner,

	.g_tuner = sony_btf_mpx_g_tuner,

};



static const struct v4l2_subdev_ops sony_btf_mpx_ops = {

	.core = &sony_btf_mpx_core_ops,

	.tuner = &sony_btf_mpx_tuner_ops,

};



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



static int sony_btf_mpx_probe(struct i2c_client *client,

				const struct i2c_device_id *id)

{

	struct sony_btf_mpx *t;

	struct v4l2_subdev *sd;



	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))

		return -ENODEV;



	v4l_info(client, "chip found @ 0x%x (%s)\n",

			client->addr << 1, client->adapter->name);



	t = kzalloc(sizeof(struct sony_btf_mpx), GFP_KERNEL);

	if (t == NULL)

		return -ENOMEM;



	sd = &t->sd;

	v4l2_i2c_subdev_init(sd, client, &sony_btf_mpx_ops);



	/* Initialize sony_btf_mpx */

	t->mpxmode = 0;

	t->audmode = V4L2_TUNER_MODE_STEREO;



	return 0;

}



static int sony_btf_mpx_remove(struct i2c_client *client)

{

	struct v4l2_subdev *sd = i2c_get_clientdata(client);



	v4l2_device_unregister_subdev(sd);

	kfree(to_state(sd));



	return 0;

}



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



static const struct i2c_device_id sony_btf_mpx_id[] = {

	{ "sony-btf-mpx", 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, sony_btf_mpx_id);



static struct i2c_driver sony_btf_mpx_driver = {

	.driver = {

		.owner	= THIS_MODULE,

		.name	= "sony-btf-mpx",

	},

	.probe = sony_btf_mpx_probe,

	.remove = sony_btf_mpx_remove,

	.id_table = sony_btf_mpx_id,

};

module_i2c_driver(sony_btf_mpx_driver);