[mirror_ubuntu-artful-kernel.git] / drivers / media / i2c / sony-btf-mpx.c

/*
 * 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.
 */

#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");

/* #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, const 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_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_video_ops sony_btf_mpx_video_ops = {
	.s_std = sony_btf_mpx_s_std,
};

static const struct v4l2_subdev_ops sony_btf_mpx_ops = {
	.tuner = &sony_btf_mpx_tuner_ops,
	.video = &sony_btf_mpx_video_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 = devm_kzalloc(&client->dev, sizeof(*t), 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);

	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 = {
		.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);
Commit	Line	Data
c7c54a98 HV	1	/*
	2	* Copyright (C) 2005-2006 Micronas USA Inc.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License (Version 2) as
	6	* published by the Free Software Foundation.
	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.
c7c54a98 HV	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/init.h>
	16	#include <linux/i2c.h>
	17	#include <linux/videodev2.h>
	18	#include <media/tuner.h>
	19	#include <media/v4l2-common.h>
	20	#include <media/v4l2-ioctl.h>
	21	#include <media/v4l2-device.h>
	22	#include <linux/slab.h>
	23
	24	MODULE_DESCRIPTION("sony-btf-mpx driver");
	25	MODULE_LICENSE("GPL v2");
	26
	27	static int debug;
	28	module_param(debug, int, 0644);
5c75a55e	29	MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on");
c7c54a98 HV	30
	31	/* #define MPX_DEBUG */
	32
	33	/*
	34	* Note:
	35	*
	36	* AS(IF/MPX) pin: LOW HIGH/OPEN
	37	* IF/MPX address: 0x42/0x40 0x43/0x44
	38	*/
	39
	40
	41	static int force_mpx_mode = -1;
	42	module_param(force_mpx_mode, int, 0644);
	43
	44	struct sony_btf_mpx {
	45	struct v4l2_subdev sd;
	46	int mpxmode;
	47	u32 audmode;
	48	};
	49
	50	static inline struct sony_btf_mpx to_state(struct v4l2_subdev sd)
	51	{
	52	return container_of(sd, struct sony_btf_mpx, sd);
	53	}
	54
	55	static int mpx_write(struct i2c_client *client, int dev, int addr, int val)
	56	{
	57	u8 buffer[5];
	58	struct i2c_msg msg;
	59
	60	buffer[0] = dev;
	61	buffer[1] = addr >> 8;
	62	buffer[2] = addr & 0xff;
	63	buffer[3] = val >> 8;
	64	buffer[4] = val & 0xff;
	65	msg.addr = client->addr;
	66	msg.flags = 0;
	67	msg.len = 5;
	68	msg.buf = buffer;
	69	i2c_transfer(client->adapter, &msg, 1);
	70	return 0;
	71	}
	72
	73	/*
	74	* MPX register values for the BTF-PG472Z:
	75	*
	76	* FM_ NICAM_ SCART_
	77	* MODUS SOURCE ACB PRESCAL PRESCAL PRESCAL SYSTEM VOLUME
	78	* 10/0030 12/0008 12/0013 12/000E 12/0010 12/0000 10/0020 12/0000
	79	* ---------------------------------------------------------------
	80	* Auto 1003 0020 0100 2603 5000 XXXX 0001 7500
	81	*
	82	* B/G
	83	* Mono 1003 0020 0100 2603 5000 XXXX 0003 7500
	84	* A2 1003 0020 0100 2601 5000 XXXX 0003 7500
	85	* NICAM 1003 0120 0100 2603 5000 XXXX 0008 7500
	86	*
	87	* I
	88	* Mono 1003 0020 0100 2603 7900 XXXX 000A 7500
	89	* NICAM 1003 0120 0100 2603 7900 XXXX 000A 7500
	90	*
	91	* D/K
	92	* Mono 1003 0020 0100 2603 5000 XXXX 0004 7500
	93	* A2-1 1003 0020 0100 2601 5000 XXXX 0004 7500
94	* A2-2 1003 0020 0100 2601 5000 XXXX 0005 7500
95	* A2-3 1003 0020 0100 2601 5000 XXXX 0007 7500
96	* NICAM 1003 0120 0100 2603 5000 XXXX 000B 7500
97	*
98	* L/L'
99	* Mono 0003 0200 0100 7C03 5000 2200 0009 7500
100	* NICAM 0003 0120 0100 7C03 5000 XXXX 0009 7500
101	*
102	* M
103	* Mono 1003 0200 0100 2B03 5000 2B00 0002 7500
104	*
105	* For Asia, replace the 0x26XX in FM_PRESCALE with 0x14XX.
106	*
107	* Bilingual selection in A2/NICAM:
108	*
109	* High byte of SOURCE Left chan Right chan
110	* 0x01 MAIN SUB
111	* 0x03 MAIN MAIN
112	* 0x04 SUB SUB
113	*
114	* Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or
115	* 0x00 (all other bands). Force mono in A2 with FMONO_A2:
116	*
117	* FMONO_A2
118	* 10/0022
119	* --------
120	* Forced mono ON 07F0
121	* Forced mono OFF 0190
122	*/
123
124	static const struct {
125	enum { AUD_MONO, AUD_A2, AUD_NICAM, AUD_NICAM_L } audio_mode;
126	u16 modus;
127	u16 source;
128	u16 acb;
129	u16 fm_prescale;
130	u16 nicam_prescale;
131	u16 scart_prescale;
132	u16 system;
133	u16 volume;
134	} mpx_audio_modes[] = {
135	/* Auto */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
136	0x5000, 0x0000, 0x0001, 0x7500 },
137	/* B/G Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
138	0x5000, 0x0000, 0x0003, 0x7500 },
139	/* B/G A2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
140	0x5000, 0x0000, 0x0003, 0x7500 },
141	/* B/G NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
142	0x5000, 0x0000, 0x0008, 0x7500 },
143	/* I Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
144	0x7900, 0x0000, 0x000A, 0x7500 },
145	/* I NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
146	0x7900, 0x0000, 0x000A, 0x7500 },
147	/* D/K Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
148	0x5000, 0x0000, 0x0004, 0x7500 },
149	/* D/K A2-1 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
150	0x5000, 0x0000, 0x0004, 0x7500 },
151	/* D/K A2-2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
152	0x5000, 0x0000, 0x0005, 0x7500 },
153	/* D/K A2-3 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
154	0x5000, 0x0000, 0x0007, 0x7500 },
155	/* D/K NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
156	0x5000, 0x0000, 0x000B, 0x7500 },
157	/* L/L' Mono */ { AUD_MONO, 0x0003, 0x0200, 0x0100, 0x7C03,
158	0x5000, 0x2200, 0x0009, 0x7500 },
159	/* L/L' NICAM */{ AUD_NICAM_L, 0x0003, 0x0120, 0x0100, 0x7C03,
160	0x5000, 0x0000, 0x0009, 0x7500 },
161	};
162
163	#define MPX_NUM_MODES ARRAY_SIZE(mpx_audio_modes)
164
165	static int mpx_setup(struct sony_btf_mpx *t)
166	{
167	struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
168	u16 source = 0;
169	u8 buffer[3];
170	struct i2c_msg msg;
171	int mode = t->mpxmode;
172
173	/* reset MPX */
174	buffer[0] = 0x00;
175	buffer[1] = 0x80;
176	buffer[2] = 0x00;
177	msg.addr = client->addr;
178	msg.flags = 0;
179	msg.len = 3;
180	msg.buf = buffer;
181	i2c_transfer(client->adapter, &msg, 1);
182	buffer[1] = 0x00;
183	i2c_transfer(client->adapter, &msg, 1);
184
185	if (t->audmode != V4L2_TUNER_MODE_MONO)
186	mode++;
187
188	if (mpx_audio_modes[mode].audio_mode != AUD_MONO) {
189	switch (t->audmode) {
190	case V4L2_TUNER_MODE_MONO:
191	switch (mpx_audio_modes[mode].audio_mode) {
192	case AUD_A2:
193	source = mpx_audio_modes[mode].source;
194	break;
195	case AUD_NICAM:
196	source = 0x0000;
197	break;
198	case AUD_NICAM_L:
199	source = 0x0200;
200	break;
201	default:
202	break;
203	}
204	break;
205	case V4L2_TUNER_MODE_STEREO:
206	source = mpx_audio_modes[mode].source;
207	break;
208	case V4L2_TUNER_MODE_LANG1:
209	source = 0x0300;
210	break;
211	case V4L2_TUNER_MODE_LANG2:
212	source = 0x0400;
213	break;
214	}
215	source \|= mpx_audio_modes[mode].source & 0x00ff;
216	} else
217	source = mpx_audio_modes[mode].source;
218
219	mpx_write(client, 0x10, 0x0030, mpx_audio_modes[mode].modus);
220	mpx_write(client, 0x12, 0x0008, source);
221	mpx_write(client, 0x12, 0x0013, mpx_audio_modes[mode].acb);
222	mpx_write(client, 0x12, 0x000e,
223	mpx_audio_modes[mode].fm_prescale);
224	mpx_write(client, 0x12, 0x0010,
225	mpx_audio_modes[mode].nicam_prescale);
226	mpx_write(client, 0x12, 0x000d,
227	mpx_audio_modes[mode].scart_prescale);
228	mpx_write(client, 0x10, 0x0020, mpx_audio_modes[mode].system);
229	mpx_write(client, 0x12, 0x0000, mpx_audio_modes[mode].volume);
230	if (mpx_audio_modes[mode].audio_mode == AUD_A2)
231	mpx_write(client, 0x10, 0x0022,
232	t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190);
233
234	#ifdef MPX_DEBUG
235	{
236	u8 buf1[3], buf2[2];
237	struct i2c_msg msgs[2];
238
239	v4l2_info(client,
240	"MPX registers: %04x %04x %04x %04x %04x %04x %04x %04x\n",
241	mpx_audio_modes[mode].modus,
242	source,
243	mpx_audio_modes[mode].acb,
244	mpx_audio_modes[mode].fm_prescale,
245	mpx_audio_modes[mode].nicam_prescale,
246	mpx_audio_modes[mode].scart_prescale,
247	mpx_audio_modes[mode].system,
248	mpx_audio_modes[mode].volume);
249	buf1[0] = 0x11;
250	buf1[1] = 0x00;
251	buf1[2] = 0x7e;
252	msgs[0].addr = client->addr;
253	msgs[0].flags = 0;
254	msgs[0].len = 3;
255	msgs[0].buf = buf1;
256	msgs[1].addr = client->addr;
257	msgs[1].flags = I2C_M_RD;
258	msgs[1].len = 2;
259	msgs[1].buf = buf2;
260	i2c_transfer(client->adapter, msgs, 2);
261	v4l2_info(client, "MPX system: %02x%02x\n",
262	buf2[0], buf2[1]);
263	buf1[0] = 0x11;
264	buf1[1] = 0x02;
265	buf1[2] = 0x00;
266	i2c_transfer(client->adapter, msgs, 2);
267	v4l2_info(client, "MPX status: %02x%02x\n",
268	buf2[0], buf2[1]);
269	}
270	#endif
271	return 0;
272	}
273
274
275	static int sony_btf_mpx_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
276	{
277	struct sony_btf_mpx *t = to_state(sd);
278	int default_mpx_mode = 0;
279
280	if (std & V4L2_STD_PAL_BG)
281	default_mpx_mode = 1;
282	else if (std & V4L2_STD_PAL_I)
283	default_mpx_mode = 4;
284	else if (std & V4L2_STD_PAL_DK)
285	default_mpx_mode = 6;
286	else if (std & V4L2_STD_SECAM_L)
287	default_mpx_mode = 11;
288
289	if (default_mpx_mode != t->mpxmode) {
290	t->mpxmode = default_mpx_mode;
291	mpx_setup(t);
292	}
293	return 0;
294	}
295
296	static int sony_btf_mpx_g_tuner(struct v4l2_subdev sd, struct v4l2_tuner vt)
297	{
298	struct sony_btf_mpx *t = to_state(sd);
299
300	vt->capability = V4L2_TUNER_CAP_NORM \|
301	V4L2_TUNER_CAP_STEREO \| V4L2_TUNER_CAP_LANG1 \|
302	V4L2_TUNER_CAP_LANG2;
303	vt->rxsubchans = V4L2_TUNER_SUB_MONO \|
304	V4L2_TUNER_SUB_STEREO \| V4L2_TUNER_SUB_LANG1 \|
305	V4L2_TUNER_SUB_LANG2;
306	vt->audmode = t->audmode;
307	return 0;
308	}
309
b781e6be	310	static int sony_btf_mpx_s_tuner(struct v4l2_subdev sd, const struct v4l2_tuner vt)
c7c54a98 HV	311	{
	312	struct sony_btf_mpx *t = to_state(sd);
	313
	314	if (vt->type != V4L2_TUNER_ANALOG_TV)
	315	return -EINVAL;
	316
	317	if (vt->audmode != t->audmode) {
	318	t->audmode = vt->audmode;
	319	mpx_setup(t);
	320	}
	321	return 0;
	322	}
	323
	324	/* --------------------------------------------------------------------------*/
	325
c7c54a98 HV	326	static const struct v4l2_subdev_tuner_ops sony_btf_mpx_tuner_ops = {
	327	.s_tuner = sony_btf_mpx_s_tuner,
	328	.g_tuner = sony_btf_mpx_g_tuner,
	329	};
	330
8774bed9 LP	331	static const struct v4l2_subdev_video_ops sony_btf_mpx_video_ops = {
	332	.s_std = sony_btf_mpx_s_std,
	333	};
	334
c7c54a98	335	static const struct v4l2_subdev_ops sony_btf_mpx_ops = {
c7c54a98	336	.tuner = &sony_btf_mpx_tuner_ops,
8774bed9	337	.video = &sony_btf_mpx_video_ops,
c7c54a98 HV	338	};
	339
	340	/* --------------------------------------------------------------------------*/
	341
	342	static int sony_btf_mpx_probe(struct i2c_client *client,
	343	const struct i2c_device_id *id)
	344	{
	345	struct sony_btf_mpx *t;
	346	struct v4l2_subdev *sd;
	347
	348	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
	349	return -ENODEV;
	350
	351	v4l_info(client, "chip found @ 0x%x (%s)\n",
	352	client->addr << 1, client->adapter->name);
	353
c02b211d	354	t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);
c7c54a98 HV	355	if (t == NULL)
	356	return -ENOMEM;
	357
	358	sd = &t->sd;
	359	v4l2_i2c_subdev_init(sd, client, &sony_btf_mpx_ops);
	360
	361	/* Initialize sony_btf_mpx */
	362	t->mpxmode = 0;
	363	t->audmode = V4L2_TUNER_MODE_STEREO;
	364
	365	return 0;
	366	}
	367
	368	static int sony_btf_mpx_remove(struct i2c_client *client)
	369	{
	370	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	371
	372	v4l2_device_unregister_subdev(sd);
c7c54a98 HV	373
	374	return 0;
	375	}
	376
	377	/* ----------------------------------------------------------------------- */
	378
	379	static const struct i2c_device_id sony_btf_mpx_id[] = {
	380	{ "sony-btf-mpx", 0 },
	381	{ }
	382	};
	383	MODULE_DEVICE_TABLE(i2c, sony_btf_mpx_id);
	384
	385	static struct i2c_driver sony_btf_mpx_driver = {
	386	.driver = {
c7c54a98 HV	387	.name = "sony-btf-mpx",
	388	},
	389	.probe = sony_btf_mpx_probe,
	390	.remove = sony_btf_mpx_remove,
	391	.id_table = sony_btf_mpx_id,
	392	};
	393	module_i2c_driver(sony_btf_mpx_driver);