1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2005-2006 Micronas USA Inc.
11 #include <media/v4l2-common.h>
12 #include <media/v4l2-ioctl.h>
13 #include <media/v4l2-device.h>
16 MODULE_DESCRIPTION("sony-btf-mpx driver");
28  * AS(IF/MPX) pin:      LOW      HIGH/OPEN
33 static int force_mpx_mode = -1;
57 	msg.addr = client->addr;  in mpx_write()
61 	i2c_transfer(client->adapter, &msg, 1);  in mpx_write()
66  * MPX register values for the BTF-PG472Z:
71  *         ---------------------------------------------------------------
85  *  A2-1    1003    0020    0100    2601    5000    XXXX    0004    7500
86  *  A2-2    1003    0020    0100    2601    5000    XXXX    0005    7500
87  *  A2-3    1003    0020    0100    2601    5000    XXXX    0007    7500
101  *         High byte of SOURCE     Left chan   Right chan
106  * Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or
111  *                      --------
141 	/* D/K A2-1 */	{ AUD_A2,	0x1003, 0x0020, 0x0100, 0x2601,
143 	/* D/K A2-2 */	{ AUD_A2,	0x1003, 0x0020, 0x0100, 0x2601,
145 	/* D/K A2-3 */	{ AUD_A2,	0x1003, 0x0020, 0x0100, 0x2601,
159 	struct i2c_client *client = v4l2_get_subdevdata(&t->sd);  in mpx_setup()
163 	int mode = t->mpxmode;  in mpx_setup()
169 	msg.addr = client->addr;  in mpx_setup()
173 	i2c_transfer(client->adapter, &msg, 1);  in mpx_setup()
175 	i2c_transfer(client->adapter, &msg, 1);  in mpx_setup()
177 	if (t->audmode != V4L2_TUNER_MODE_MONO)  in mpx_setup()
181 		switch (t->audmode) {  in mpx_setup()
224 			t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190);  in mpx_setup()
244 		msgs[0].addr = client->addr;  in mpx_setup()
248 		msgs[1].addr = client->addr;  in mpx_setup()
252 		i2c_transfer(client->adapter, msgs, 2);  in mpx_setup()
258 		i2c_transfer(client->adapter, msgs, 2);  in mpx_setup()
281 	if (default_mpx_mode != t->mpxmode) {  in sony_btf_mpx_s_std()
282 		t->mpxmode = default_mpx_mode;  in sony_btf_mpx_s_std()
288 static int sony_btf_mpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)  in sony_btf_mpx_g_tuner()  argument
292 	vt->capability = V4L2_TUNER_CAP_NORM |  in sony_btf_mpx_g_tuner()
295 	vt->rxsubchans = V4L2_TUNER_SUB_MONO |  in sony_btf_mpx_g_tuner()
298 	vt->audmode = t->audmode;  in sony_btf_mpx_g_tuner()
302 static int sony_btf_mpx_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)  in sony_btf_mpx_s_tuner()  argument
306 	if (vt->type != V4L2_TUNER_ANALOG_TV)  in sony_btf_mpx_s_tuner()
307 		return -EINVAL;  in sony_btf_mpx_s_tuner()
309 	if (vt->audmode != t->audmode) {  in sony_btf_mpx_s_tuner()
310 		t->audmode = vt->audmode;  in sony_btf_mpx_s_tuner()
316 /* --------------------------------------------------------------------------*/
332 /* --------------------------------------------------------------------------*/
340 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))  in sony_btf_mpx_probe()
341 		return -ENODEV;  in sony_btf_mpx_probe()
344 			client->addr << 1, client->adapter->name);  in sony_btf_mpx_probe()
346 	t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);  in sony_btf_mpx_probe()
348 		return -ENOMEM;  in sony_btf_mpx_probe()
350 	sd = &t->sd;  in sony_btf_mpx_probe()
354 	t->mpxmode = 0;  in sony_btf_mpx_probe()
355 	t->audmode = V4L2_TUNER_MODE_STEREO;  in sony_btf_mpx_probe()
369 /* ----------------------------------------------------------------------- */
372 	{ "sony-btf-mpx", 0 },
379 		.name	= "sony-btf-mpx",