[linux-2.6-block.git] / drivers / media / tuners / tua9001.c

/*
 * Infineon TUA 9001 silicon tuner driver
 *
 * Copyright (C) 2009 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 "tua9001.h"
#include "tua9001_priv.h"

/* write register */
static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
{
	int ret;
	u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff };
	struct i2c_msg msg[1] = {
		{
			.addr = priv->cfg->i2c_addr,
			.flags = 0,
			.len = sizeof(buf),
			.buf = buf,
		}
	};

	ret = i2c_transfer(priv->i2c, msg, 1);
	if (ret == 1) {
		ret = 0;
	} else {
		dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n",
				KBUILD_MODNAME, ret, reg);
		ret = -EREMOTEIO;
	}

	return ret;
}

static int tua9001_release(struct dvb_frontend *fe)
{
	struct tua9001_priv *priv = fe->tuner_priv;
	int ret = 0;

	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

	if (fe->callback)
		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
				TUA9001_CMD_CEN, 0);

	kfree(fe->tuner_priv);
	fe->tuner_priv = NULL;

	return ret;
}

static int tua9001_init(struct dvb_frontend *fe)
{
	struct tua9001_priv *priv = fe->tuner_priv;
	int ret = 0;
	u8 i;
	struct reg_val data[] = {
		{ 0x1e, 0x6512 },
		{ 0x25, 0xb888 },
		{ 0x39, 0x5460 },
		{ 0x3b, 0x00c0 },
		{ 0x3a, 0xf000 },
		{ 0x08, 0x0000 },
		{ 0x32, 0x0030 },
		{ 0x41, 0x703a },
		{ 0x40, 0x1c78 },
		{ 0x2c, 0x1c00 },
		{ 0x36, 0xc013 },
		{ 0x37, 0x6f18 },
		{ 0x27, 0x0008 },
		{ 0x2a, 0x0001 },
		{ 0x34, 0x0a40 },
	};

	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

	if (fe->callback) {
		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
				TUA9001_CMD_RESETN, 0);
		if (ret < 0)
			goto err;
	}

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */

	for (i = 0; i < ARRAY_SIZE(data); i++) {
		ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
		if (ret < 0)
			goto err_i2c_gate_ctrl;
	}

err_i2c_gate_ctrl:
	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
err:
	if (ret < 0)
		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

	return ret;
}

static int tua9001_sleep(struct dvb_frontend *fe)
{
	struct tua9001_priv *priv = fe->tuner_priv;
	int ret = 0;

	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

	if (fe->callback)
		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
				TUA9001_CMD_RESETN, 1);

	if (ret < 0)
		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

	return ret;
}

static int tua9001_set_params(struct dvb_frontend *fe)
{
	struct tua9001_priv *priv = fe->tuner_priv;
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	int ret = 0, i;
	u16 val;
	u32 frequency;
	struct reg_val data[2];

	dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
			"bandwidth_hz=%d\n", __func__,
			c->delivery_system, c->frequency, c->bandwidth_hz);

	switch (c->delivery_system) {
	case SYS_DVBT:
		switch (c->bandwidth_hz) {
		case 8000000:
			val  = 0x0000;
			break;
		case 7000000:
			val  = 0x1000;
			break;
		case 6000000:
			val  = 0x2000;
			break;
		case 5000000:
			val  = 0x3000;
			break;
		default:
			ret = -EINVAL;
			goto err;
		}
		break;
	default:
		ret = -EINVAL;
		goto err;
	}

	data[0].reg = 0x04;
	data[0].val = val;

	frequency = (c->frequency - 150000000);
	frequency /= 100;
	frequency *= 48;
	frequency /= 10000;

	data[1].reg = 0x1f;
	data[1].val = frequency;

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */

	if (fe->callback) {
		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
				TUA9001_CMD_RXEN, 0);
		if (ret < 0)
			goto err_i2c_gate_ctrl;
	}

	for (i = 0; i < ARRAY_SIZE(data); i++) {
		ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
		if (ret < 0)
			goto err_i2c_gate_ctrl;
	}

	if (fe->callback) {
		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
				TUA9001_CMD_RXEN, 1);
		if (ret < 0)
			goto err_i2c_gate_ctrl;
	}

err_i2c_gate_ctrl:
	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
err:
	if (ret < 0)
		dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);

	return ret;
}

static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
	struct tua9001_priv *priv = fe->tuner_priv;

	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);

	*frequency = 0; /* Zero-IF */

	return 0;
}

static const struct dvb_tuner_ops tua9001_tuner_ops = {
	.info = {
		.name           = "Infineon TUA 9001",

		.frequency_min  = 170000000,
		.frequency_max  = 862000000,
		.frequency_step = 0,
	},

	.release = tua9001_release,

	.init = tua9001_init,
	.sleep = tua9001_sleep,
	.set_params = tua9001_set_params,

	.get_if_frequency = tua9001_get_if_frequency,
};

struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
		struct i2c_adapter *i2c, struct tua9001_config *cfg)
{
	struct tua9001_priv *priv = NULL;
	int ret;

	priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL);
	if (priv == NULL)
		return NULL;

	priv->cfg = cfg;
	priv->i2c = i2c;

	if (fe->callback) {
		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
				TUA9001_CMD_CEN, 1);
		if (ret < 0)
			goto err;

		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
				TUA9001_CMD_RXEN, 0);
		if (ret < 0)
			goto err;

		ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
				TUA9001_CMD_RESETN, 1);
		if (ret < 0)
			goto err;
	}

	dev_info(&priv->i2c->dev,
			"%s: Infineon TUA 9001 successfully attached\n",
			KBUILD_MODNAME);

	memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
			sizeof(struct dvb_tuner_ops));

	fe->tuner_priv = priv;
	return fe;
err:
	dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
	kfree(priv);
	return NULL;
}
EXPORT_SYMBOL(tua9001_attach);

MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");
Commit	Line	Data
f9263747 AP	1	/*
	2	* Infineon TUA 9001 silicon tuner driver
	3	*
	4	* Copyright (C) 2009 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
	21	#include "tua9001.h"
	22	#include "tua9001_priv.h"
	23
	24	/* write register */
	25	static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
	26	{
	27	int ret;
	28	u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff };
	29	struct i2c_msg msg[1] = {
	30	{
	31	.addr = priv->cfg->i2c_addr,
	32	.flags = 0,
	33	.len = sizeof(buf),
	34	.buf = buf,
	35	}
	36	};
	37
	38	ret = i2c_transfer(priv->i2c, msg, 1);
	39	if (ret == 1) {
	40	ret = 0;
	41	} else {
e6211c7c AP	42	dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n",
e6211c7c AP	43	KBUILD_MODNAME, ret, reg);
f9263747 AP	44	ret = -EREMOTEIO;
	45	}
	46
	47	return ret;
	48	}
	49
	50	static int tua9001_release(struct dvb_frontend *fe)
	51	{
89054e37 AP	52	struct tua9001_priv *priv = fe->tuner_priv;
	53	int ret = 0;
	54
e6211c7c AP	55	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
e6211c7c AP	56
89054e37 AP	57	if (fe->callback)
	58	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	59	TUA9001_CMD_CEN, 0);
	60
f9263747 AP	61	kfree(fe->tuner_priv);
	62	fe->tuner_priv = NULL;
	63
89054e37	64	return ret;
f9263747 AP	65	}
	66
	67	static int tua9001_init(struct dvb_frontend *fe)
	68	{
	69	struct tua9001_priv *priv = fe->tuner_priv;
	70	int ret = 0;
	71	u8 i;
	72	struct reg_val data[] = {
	73	{ 0x1e, 0x6512 },
	74	{ 0x25, 0xb888 },
	75	{ 0x39, 0x5460 },
	76	{ 0x3b, 0x00c0 },
	77	{ 0x3a, 0xf000 },
	78	{ 0x08, 0x0000 },
	79	{ 0x32, 0x0030 },
	80	{ 0x41, 0x703a },
	81	{ 0x40, 0x1c78 },
	82	{ 0x2c, 0x1c00 },
	83	{ 0x36, 0xc013 },
	84	{ 0x37, 0x6f18 },
	85	{ 0x27, 0x0008 },
	86	{ 0x2a, 0x0001 },
	87	{ 0x34, 0x0a40 },
	88	};
	89
e6211c7c AP	90	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
e6211c7c AP	91
89054e37 AP	92	if (fe->callback) {
	93	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	94	TUA9001_CMD_RESETN, 0);
	95	if (ret < 0)
	96	goto err;
	97	}
	98
f9263747 AP	99	if (fe->ops.i2c_gate_ctrl)
	100	fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
	101
	102	for (i = 0; i < ARRAY_SIZE(data); i++) {
	103	ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
89054e37 AP	104	if (ret < 0)
89054e37 AP	105	goto err_i2c_gate_ctrl;
f9263747 AP	106	}
f9263747 AP	107
89054e37	108	err_i2c_gate_ctrl:
f9263747 AP	109	if (fe->ops.i2c_gate_ctrl)
f9263747 AP	110	fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
89054e37 AP	111	err:
89054e37 AP	112	if (ret < 0)
e6211c7c	113	dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
89054e37 AP	114
	115	return ret;
	116	}
	117
	118	static int tua9001_sleep(struct dvb_frontend *fe)
	119	{
	120	struct tua9001_priv *priv = fe->tuner_priv;
	121	int ret = 0;
	122
e6211c7c AP	123	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
e6211c7c AP	124
89054e37 AP	125	if (fe->callback)
	126	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	127	TUA9001_CMD_RESETN, 1);
f9263747 AP	128
f9263747 AP	129	if (ret < 0)
e6211c7c	130	dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
f9263747 AP	131
	132	return ret;
	133	}
	134
	135	static int tua9001_set_params(struct dvb_frontend *fe)
	136	{
	137	struct tua9001_priv *priv = fe->tuner_priv;
	138	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
59e54059	139	int ret = 0, i;
f9263747 AP	140	u16 val;
	141	u32 frequency;
	142	struct reg_val data[2];
	143
e6211c7c AP	144	dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
	145	"bandwidth_hz=%d\n", __func__,
	146	c->delivery_system, c->frequency, c->bandwidth_hz);
f9263747 AP	147
	148	switch (c->delivery_system) {
	149	case SYS_DVBT:
	150	switch (c->bandwidth_hz) {
	151	case 8000000:
	152	val = 0x0000;
	153	break;
	154	case 7000000:
	155	val = 0x1000;
	156	break;
	157	case 6000000:
	158	val = 0x2000;
	159	break;
	160	case 5000000:
	161	val = 0x3000;
	162	break;
	163	default:
	164	ret = -EINVAL;
	165	goto err;
	166	}
	167	break;
	168	default:
	169	ret = -EINVAL;
	170	goto err;
	171	}
	172
	173	data[0].reg = 0x04;
	174	data[0].val = val;
	175
	176	frequency = (c->frequency - 150000000);
	177	frequency /= 100;
	178	frequency *= 48;
	179	frequency /= 10000;
	180
	181	data[1].reg = 0x1f;
	182	data[1].val = frequency;
	183
	184	if (fe->ops.i2c_gate_ctrl)
	185	fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
	186
89054e37 AP	187	if (fe->callback) {
	188	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	189	TUA9001_CMD_RXEN, 0);
	190	if (ret < 0)
	191	goto err_i2c_gate_ctrl;
	192	}
	193
f9263747 AP	194	for (i = 0; i < ARRAY_SIZE(data); i++) {
	195	ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
	196	if (ret < 0)
89054e37 AP	197	goto err_i2c_gate_ctrl;
	198	}
	199
	200	if (fe->callback) {
	201	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	202	TUA9001_CMD_RXEN, 1);
	203	if (ret < 0)
	204	goto err_i2c_gate_ctrl;
f9263747 AP	205	}
f9263747 AP	206
89054e37	207	err_i2c_gate_ctrl:
f9263747 AP	208	if (fe->ops.i2c_gate_ctrl)
f9263747 AP	209	fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
f9263747 AP	210	err:
f9263747 AP	211	if (ret < 0)
e6211c7c	212	dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
f9263747 AP	213
	214	return ret;
	215	}
	216
	217	static int tua9001_get_if_frequency(struct dvb_frontend fe, u32 frequency)
	218	{
e6211c7c AP	219	struct tua9001_priv *priv = fe->tuner_priv;
	220
	221	dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
	222
f9263747 AP	223	frequency = 0; / Zero-IF */
	224
	225	return 0;
	226	}
	227
	228	static const struct dvb_tuner_ops tua9001_tuner_ops = {
	229	.info = {
	230	.name = "Infineon TUA 9001",
	231
	232	.frequency_min = 170000000,
	233	.frequency_max = 862000000,
	234	.frequency_step = 0,
	235	},
	236
	237	.release = tua9001_release,
	238
	239	.init = tua9001_init,
89054e37	240	.sleep = tua9001_sleep,
f9263747 AP	241	.set_params = tua9001_set_params,
	242
	243	.get_if_frequency = tua9001_get_if_frequency,
	244	};
	245
	246	struct dvb_frontend tua9001_attach(struct dvb_frontend fe,
	247	struct i2c_adapter i2c, struct tua9001_config cfg)
	248	{
	249	struct tua9001_priv *priv = NULL;
89054e37	250	int ret;
f9263747 AP	251
	252	priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL);
	253	if (priv == NULL)
	254	return NULL;
	255
	256	priv->cfg = cfg;
	257	priv->i2c = i2c;
	258
89054e37 AP	259	if (fe->callback) {
	260	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	261	TUA9001_CMD_CEN, 1);
	262	if (ret < 0)
	263	goto err;
69504793 AP	264
	265	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	266	TUA9001_CMD_RXEN, 0);
	267	if (ret < 0)
	268	goto err;
	269
	270	ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
	271	TUA9001_CMD_RESETN, 1);
	272	if (ret < 0)
	273	goto err;
89054e37 AP	274	}
89054e37 AP	275
e6211c7c AP	276	dev_info(&priv->i2c->dev,
	277	"%s: Infineon TUA 9001 successfully attached\n",
	278	KBUILD_MODNAME);
f9263747 AP	279
	280	memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
	281	sizeof(struct dvb_tuner_ops));
	282
	283	fe->tuner_priv = priv;
	284	return fe;
89054e37	285	err:
e6211c7c	286	dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
89054e37 AP	287	kfree(priv);
89054e37 AP	288	return NULL;
f9263747 AP	289	}
	290	EXPORT_SYMBOL(tua9001_attach);
	291
	292	MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver");
	293	MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
	294	MODULE_LICENSE("GPL");