[deliverable/linux.git] / drivers / media / tuners / tda18212.c

/*
 * NXP TDA18212HN silicon tuner driver
 *
 * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
 *
 *    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 "tda18212.h"
#include <linux/regmap.h>

struct tda18212_dev {
	struct tda18212_config cfg;
	struct i2c_client *client;
	struct regmap *regmap;

	u32 if_frequency;
};

static int tda18212_set_params(struct dvb_frontend *fe)
{
	struct tda18212_dev *dev = fe->tuner_priv;
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	int ret, i;
	u32 if_khz;
	u8 buf[9];
	#define DVBT_6   0
	#define DVBT_7   1
	#define DVBT_8   2
	#define DVBT2_6  3
	#define DVBT2_7  4
	#define DVBT2_8  5
	#define DVBC_6   6
	#define DVBC_8   7
	#define ATSC_VSB 8
	#define ATSC_QAM 9
	static const u8 bw_params[][3] = {
		     /* reg:   0f    13    23 */
		[DVBT_6]  = { 0xb3, 0x20, 0x03 },
		[DVBT_7]  = { 0xb3, 0x31, 0x01 },
		[DVBT_8]  = { 0xb3, 0x22, 0x01 },
		[DVBT2_6] = { 0xbc, 0x20, 0x03 },
		[DVBT2_7] = { 0xbc, 0x72, 0x03 },
		[DVBT2_8] = { 0xbc, 0x22, 0x01 },
		[DVBC_6]  = { 0x92, 0x50, 0x03 },
		[DVBC_8]  = { 0x92, 0x53, 0x03 },
		[ATSC_VSB] = { 0x7d, 0x20, 0x63 },
		[ATSC_QAM] = { 0x7d, 0x20, 0x63 },
	};

	dev_dbg(&dev->client->dev,
			"delivery_system=%d frequency=%d bandwidth_hz=%d\n",
			c->delivery_system, c->frequency,
			c->bandwidth_hz);

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */

	switch (c->delivery_system) {
	case SYS_ATSC:
		if_khz = dev->cfg.if_atsc_vsb;
		i = ATSC_VSB;
		break;
	case SYS_DVBC_ANNEX_B:
		if_khz = dev->cfg.if_atsc_qam;
		i = ATSC_QAM;
		break;
	case SYS_DVBT:
		switch (c->bandwidth_hz) {
		case 6000000:
			if_khz = dev->cfg.if_dvbt_6;
			i = DVBT_6;
			break;
		case 7000000:
			if_khz = dev->cfg.if_dvbt_7;
			i = DVBT_7;
			break;
		case 8000000:
			if_khz = dev->cfg.if_dvbt_8;
			i = DVBT_8;
			break;
		default:
			ret = -EINVAL;
			goto error;
		}
		break;
	case SYS_DVBT2:
		switch (c->bandwidth_hz) {
		case 6000000:
			if_khz = dev->cfg.if_dvbt2_6;
			i = DVBT2_6;
			break;
		case 7000000:
			if_khz = dev->cfg.if_dvbt2_7;
			i = DVBT2_7;
			break;
		case 8000000:
			if_khz = dev->cfg.if_dvbt2_8;
			i = DVBT2_8;
			break;
		default:
			ret = -EINVAL;
			goto error;
		}
		break;
	case SYS_DVBC_ANNEX_A:
	case SYS_DVBC_ANNEX_C:
		if_khz = dev->cfg.if_dvbc;
		i = DVBC_8;
		break;
	default:
		ret = -EINVAL;
		goto error;
	}

	ret = regmap_write(dev->regmap, 0x23, bw_params[i][2]);
	if (ret)
		goto error;

	ret = regmap_write(dev->regmap, 0x06, 0x00);
	if (ret)
		goto error;

	ret = regmap_write(dev->regmap, 0x0f, bw_params[i][0]);
	if (ret)
		goto error;

	buf[0] = 0x02;
	buf[1] = bw_params[i][1];
	buf[2] = 0x03; /* default value */
	buf[3] = DIV_ROUND_CLOSEST(if_khz, 50);
	buf[4] = ((c->frequency / 1000) >> 16) & 0xff;
	buf[5] = ((c->frequency / 1000) >>  8) & 0xff;
	buf[6] = ((c->frequency / 1000) >>  0) & 0xff;
	buf[7] = 0xc1;
	buf[8] = 0x01;
	ret = regmap_bulk_write(dev->regmap, 0x12, buf, sizeof(buf));
	if (ret)
		goto error;

	/* actual IF rounded as it is on register */
	dev->if_frequency = buf[3] * 50 * 1000;

exit:
	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */

	return ret;

error:
	dev_dbg(&dev->client->dev, "failed=%d\n", ret);
	goto exit;
}

static int tda18212_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
	struct tda18212_dev *dev = fe->tuner_priv;

	*frequency = dev->if_frequency;

	return 0;
}

static const struct dvb_tuner_ops tda18212_tuner_ops = {
	.info = {
		.name           = "NXP TDA18212",

		.frequency_min  =  48000000,
		.frequency_max  = 864000000,
		.frequency_step =      1000,
	},

	.set_params    = tda18212_set_params,
	.get_if_frequency = tda18212_get_if_frequency,
};

static int tda18212_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
{
	struct tda18212_config *cfg = client->dev.platform_data;
	struct dvb_frontend *fe = cfg->fe;
	struct tda18212_dev *dev;
	int ret;
	unsigned int chip_id;
	char *version;
	static const struct regmap_config regmap_config = {
		.reg_bits = 8,
		.val_bits = 8,
	};

	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	if (dev == NULL) {
		ret = -ENOMEM;
		dev_err(&client->dev, "kzalloc() failed\n");
		goto err;
	}

	memcpy(&dev->cfg, cfg, sizeof(struct tda18212_config));
	dev->client = client;
	dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
	if (IS_ERR(dev->regmap)) {
		ret = PTR_ERR(dev->regmap);
		goto err;
	}

	/* check if the tuner is there */
	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */

	ret = regmap_read(dev->regmap, 0x00, &chip_id);
	dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id);

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */

	if (ret)
		goto err;

	switch (chip_id) {
	case 0xc7:
		version = "M"; /* master */
		break;
	case 0x47:
		version = "S"; /* slave */
		break;
	default:
		ret = -ENODEV;
		goto err;
	}

	dev_info(&dev->client->dev,
			"NXP TDA18212HN/%s successfully identified\n", version);

	fe->tuner_priv = dev;
	memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
			sizeof(struct dvb_tuner_ops));
	i2c_set_clientdata(client, dev);

	return 0;
err:
	dev_dbg(&client->dev, "failed=%d\n", ret);
	kfree(dev);
	return ret;
}

static int tda18212_remove(struct i2c_client *client)
{
	struct tda18212_dev *dev = i2c_get_clientdata(client);
	struct dvb_frontend *fe = dev->cfg.fe;

	dev_dbg(&client->dev, "\n");

	memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
	fe->tuner_priv = NULL;
	kfree(dev);

	return 0;
}

static const struct i2c_device_id tda18212_id[] = {
	{"tda18212", 0},
	{}
};
MODULE_DEVICE_TABLE(i2c, tda18212_id);

static struct i2c_driver tda18212_driver = {
	.driver = {
		.name	= "tda18212",
	},
	.probe		= tda18212_probe,
	.remove		= tda18212_remove,
	.id_table	= tda18212_id,
};

module_i2c_driver(tda18212_driver);

MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");
Commit	Line	Data
26eb7045 AP	1	/*
	2	* NXP TDA18212HN silicon tuner driver
	3	*
	4	* Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; if not, write to the Free Software Foundation, Inc.,
	18	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	19	*/
	20
2b50763a	21	#include "tda18212.h"
3b60b761	22	#include <linux/regmap.h>
f1baab87	23
e4a42e18	24	struct tda18212_dev {
0e584cc2 AP	25	struct tda18212_config cfg;
0e584cc2 AP	26	struct i2c_client *client;
3b60b761	27	struct regmap *regmap;
835bf82c AP	28
835bf82c AP	29	u32 if_frequency;
2b50763a JP	30	};
2b50763a JP	31
14d24d14	32	static int tda18212_set_params(struct dvb_frontend *fe)
26eb7045	33	{
e4a42e18	34	struct tda18212_dev *dev = fe->tuner_priv;
26eb7045 AP	35	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	36	int ret, i;
	37	u32 if_khz;
	38	u8 buf[9];
b682ad1d AP	39	#define DVBT_6 0
	40	#define DVBT_7 1
	41	#define DVBT_8 2
	42	#define DVBT2_6 3
	43	#define DVBT2_7 4
	44	#define DVBT2_8 5
	45	#define DVBC_6 6
	46	#define DVBC_8 7
6cff36b2 MCC	47	#define ATSC_VSB 8
6cff36b2 MCC	48	#define ATSC_QAM 9
26eb7045	49	static const u8 bw_params[][3] = {
b682ad1d AP	50	/* reg: 0f 13 23 */
	51	[DVBT_6] = { 0xb3, 0x20, 0x03 },
	52	[DVBT_7] = { 0xb3, 0x31, 0x01 },
	53	[DVBT_8] = { 0xb3, 0x22, 0x01 },
	54	[DVBT2_6] = { 0xbc, 0x20, 0x03 },
	55	[DVBT2_7] = { 0xbc, 0x72, 0x03 },
	56	[DVBT2_8] = { 0xbc, 0x22, 0x01 },
	57	[DVBC_6] = { 0x92, 0x50, 0x03 },
	58	[DVBC_8] = { 0x92, 0x53, 0x03 },
6cff36b2 MCC	59	[ATSC_VSB] = { 0x7d, 0x20, 0x63 },
6cff36b2 MCC	60	[ATSC_QAM] = { 0x7d, 0x20, 0x63 },
26eb7045 AP	61	};
26eb7045 AP	62
e4a42e18	63	dev_dbg(&dev->client->dev,
bdb32655 AP	64	"delivery_system=%d frequency=%d bandwidth_hz=%d\n",
bdb32655 AP	65	c->delivery_system, c->frequency,
d46ddbe4	66	c->bandwidth_hz);
26eb7045 AP	67
	68	if (fe->ops.i2c_gate_ctrl)
	69	fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
	70
	71	switch (c->delivery_system) {
6cff36b2	72	case SYS_ATSC:
e4a42e18	73	if_khz = dev->cfg.if_atsc_vsb;
6cff36b2 MCC	74	i = ATSC_VSB;
	75	break;
	76	case SYS_DVBC_ANNEX_B:
e4a42e18	77	if_khz = dev->cfg.if_atsc_qam;
6cff36b2 MCC	78	i = ATSC_QAM;
6cff36b2 MCC	79	break;
26eb7045 AP	80	case SYS_DVBT:
	81	switch (c->bandwidth_hz) {
	82	case 6000000:
e4a42e18	83	if_khz = dev->cfg.if_dvbt_6;
b682ad1d	84	i = DVBT_6;
26eb7045 AP	85	break;
26eb7045 AP	86	case 7000000:
e4a42e18	87	if_khz = dev->cfg.if_dvbt_7;
b682ad1d	88	i = DVBT_7;
26eb7045 AP	89	break;
26eb7045 AP	90	case 8000000:
e4a42e18	91	if_khz = dev->cfg.if_dvbt_8;
b682ad1d AP	92	i = DVBT_8;
	93	break;
	94	default:
	95	ret = -EINVAL;
	96	goto error;
	97	}
	98	break;
	99	case SYS_DVBT2:
	100	switch (c->bandwidth_hz) {
	101	case 6000000:
e4a42e18	102	if_khz = dev->cfg.if_dvbt2_6;
b682ad1d AP	103	i = DVBT2_6;
	104	break;
	105	case 7000000:
e4a42e18	106	if_khz = dev->cfg.if_dvbt2_7;
b682ad1d AP	107	i = DVBT2_7;
	108	break;
	109	case 8000000:
e4a42e18	110	if_khz = dev->cfg.if_dvbt2_8;
b682ad1d	111	i = DVBT2_8;
26eb7045 AP	112	break;
	113	default:
	114	ret = -EINVAL;
	115	goto error;
	116	}
	117	break;
0349471b MCC	118	case SYS_DVBC_ANNEX_A:
0349471b MCC	119	case SYS_DVBC_ANNEX_C:
e4a42e18	120	if_khz = dev->cfg.if_dvbc;
b682ad1d	121	i = DVBC_8;
26eb7045 AP	122	break;
	123	default:
	124	ret = -EINVAL;
	125	goto error;
	126	}
	127
3b60b761	128	ret = regmap_write(dev->regmap, 0x23, bw_params[i][2]);
26eb7045 AP	129	if (ret)
	130	goto error;
	131
3b60b761	132	ret = regmap_write(dev->regmap, 0x06, 0x00);
26eb7045 AP	133	if (ret)
	134	goto error;
	135
3b60b761	136	ret = regmap_write(dev->regmap, 0x0f, bw_params[i][0]);
26eb7045 AP	137	if (ret)
	138	goto error;
	139
	140	buf[0] = 0x02;
	141	buf[1] = bw_params[i][1];
	142	buf[2] = 0x03; /* default value */
8cffcc78	143	buf[3] = DIV_ROUND_CLOSEST(if_khz, 50);
26eb7045 AP	144	buf[4] = ((c->frequency / 1000) >> 16) & 0xff;
	145	buf[5] = ((c->frequency / 1000) >> 8) & 0xff;
	146	buf[6] = ((c->frequency / 1000) >> 0) & 0xff;
	147	buf[7] = 0xc1;
	148	buf[8] = 0x01;
3b60b761	149	ret = regmap_bulk_write(dev->regmap, 0x12, buf, sizeof(buf));
26eb7045 AP	150	if (ret)
	151	goto error;
	152
835bf82c	153	/* actual IF rounded as it is on register */
e4a42e18	154	dev->if_frequency = buf[3] * 50 * 1000;
835bf82c	155
26eb7045 AP	156	exit:
	157	if (fe->ops.i2c_gate_ctrl)
	158	fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
	159
	160	return ret;
	161
	162	error:
e4a42e18	163	dev_dbg(&dev->client->dev, "failed=%d\n", ret);
26eb7045 AP	164	goto exit;
	165	}
	166
835bf82c AP	167	static int tda18212_get_if_frequency(struct dvb_frontend fe, u32 frequency)
835bf82c AP	168	{
e4a42e18	169	struct tda18212_dev *dev = fe->tuner_priv;
835bf82c	170
e4a42e18	171	*frequency = dev->if_frequency;
835bf82c AP	172
	173	return 0;
	174	}
	175
26eb7045 AP	176	static const struct dvb_tuner_ops tda18212_tuner_ops = {
	177	.info = {
	178	.name = "NXP TDA18212",
	179
	180	.frequency_min = 48000000,
	181	.frequency_max = 864000000,
	182	.frequency_step = 1000,
	183	},
	184
26eb7045	185	.set_params = tda18212_set_params,
835bf82c	186	.get_if_frequency = tda18212_get_if_frequency,
26eb7045 AP	187	};
26eb7045 AP	188
0e584cc2 AP	189	static int tda18212_probe(struct i2c_client *client,
0e584cc2 AP	190	const struct i2c_device_id *id)
26eb7045	191	{
0e584cc2 AP	192	struct tda18212_config *cfg = client->dev.platform_data;
0e584cc2 AP	193	struct dvb_frontend *fe = cfg->fe;
e4a42e18	194	struct tda18212_dev *dev;
26eb7045	195	int ret;
3b60b761	196	unsigned int chip_id;
976bcb2f	197	char *version;
3b60b761 AP	198	static const struct regmap_config regmap_config = {
	199	.reg_bits = 8,
	200	.val_bits = 8,
	201	};
26eb7045	202
e4a42e18 AP	203	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
e4a42e18 AP	204	if (dev == NULL) {
0e584cc2	205	ret = -ENOMEM;
bdb32655	206	dev_err(&client->dev, "kzalloc() failed\n");
0e584cc2 AP	207	goto err;
0e584cc2 AP	208	}
26eb7045	209
e4a42e18 AP	210	memcpy(&dev->cfg, cfg, sizeof(struct tda18212_config));
e4a42e18 AP	211	dev->client = client;
3b60b761 AP	212	dev->regmap = devm_regmap_init_i2c(client, &regmap_config);
	213	if (IS_ERR(dev->regmap)) {
	214	ret = PTR_ERR(dev->regmap);
	215	goto err;
	216	}
26eb7045	217
0e584cc2	218	/* check if the tuner is there */
26eb7045 AP	219	if (fe->ops.i2c_gate_ctrl)
	220	fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
	221
3b60b761	222	ret = regmap_read(dev->regmap, 0x00, &chip_id);
e4a42e18	223	dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id);
26eb7045 AP	224
	225	if (fe->ops.i2c_gate_ctrl)
	226	fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
	227
976bcb2f AP	228	if (ret)
	229	goto err;
	230
	231	switch (chip_id) {
	232	case 0xc7:
	233	version = "M"; /* master */
	234	break;
	235	case 0x47:
	236	version = "S"; /* slave */
	237	break;
	238	default:
0e584cc2	239	ret = -ENODEV;
976bcb2f	240	goto err;
26eb7045 AP	241	}
26eb7045 AP	242
e4a42e18	243	dev_info(&dev->client->dev,
bdb32655	244	"NXP TDA18212HN/%s successfully identified\n", version);
26eb7045	245
e4a42e18	246	fe->tuner_priv = dev;
26eb7045	247	memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
0e584cc2	248	sizeof(struct dvb_tuner_ops));
e4a42e18	249	i2c_set_clientdata(client, dev);
26eb7045	250
0e584cc2	251	return 0;
976bcb2f	252	err:
bdb32655	253	dev_dbg(&client->dev, "failed=%d\n", ret);
e4a42e18	254	kfree(dev);
0e584cc2	255	return ret;
26eb7045	256	}
0e584cc2 AP	257
	258	static int tda18212_remove(struct i2c_client *client)
	259	{
e4a42e18 AP	260	struct tda18212_dev *dev = i2c_get_clientdata(client);
e4a42e18 AP	261	struct dvb_frontend *fe = dev->cfg.fe;
0e584cc2	262
bdb32655	263	dev_dbg(&client->dev, "\n");
0e584cc2 AP	264
	265	memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
	266	fe->tuner_priv = NULL;
e4a42e18	267	kfree(dev);
0e584cc2 AP	268
	269	return 0;
	270	}
	271
	272	static const struct i2c_device_id tda18212_id[] = {
	273	{"tda18212", 0},
	274	{}
	275	};
	276	MODULE_DEVICE_TABLE(i2c, tda18212_id);
	277
	278	static struct i2c_driver tda18212_driver = {
	279	.driver = {
0e584cc2 AP	280	.name = "tda18212",
	281	},
	282	.probe = tda18212_probe,
	283	.remove = tda18212_remove,
	284	.id_table = tda18212_id,
	285	};
	286
	287	module_i2c_driver(tda18212_driver);
26eb7045 AP	288
	289	MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver");
	290	MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
	291	MODULE_LICENSE("GPL");