[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb-frontends / mn88473.c

/*
 * Panasonic MN88473 DVB-T/T2/C demodulator driver
 *
 * Copyright (C) 2014 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.
 */

#include "mn88473_priv.h"

static struct dvb_frontend_ops mn88473_ops;

/* write multiple registers */
static int mn88473_wregs(struct mn88473_dev *dev, u16 reg, const u8 *val, int len)
{
#define MAX_WR_LEN 21
#define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)
	int ret;
	u8 buf[MAX_WR_XFER_LEN];
	struct i2c_msg msg[1] = {
		{
			.addr = (reg >> 8) & 0xff,
			.flags = 0,
			.len = 1 + len,
			.buf = buf,
		}
	};

	if (WARN_ON(len > MAX_WR_LEN))
		return -EINVAL;

	buf[0] = (reg >> 0) & 0xff;
	memcpy(&buf[1], val, len);

	ret = i2c_transfer(dev->client[0]->adapter, msg, 1);
	if (ret == 1) {
		ret = 0;
	} else {
		dev_warn(&dev->client[0]->dev,
				"i2c wr failed=%d reg=%02x len=%d\n",
				ret, reg, len);
		ret = -EREMOTEIO;
	}

	return ret;
}

/* read multiple registers */
static int mn88473_rregs(struct mn88473_dev *dev, u16 reg, u8 *val, int len)
{
#define MAX_RD_LEN 2
#define MAX_RD_XFER_LEN (MAX_RD_LEN)
	int ret;
	u8 buf[MAX_RD_XFER_LEN];
	struct i2c_msg msg[2] = {
		{
			.addr = (reg >> 8) & 0xff,
			.flags = 0,
			.len = 1,
			.buf = buf,
		}, {
			.addr = (reg >> 8) & 0xff,
			.flags = I2C_M_RD,
			.len = len,
			.buf = buf,
		}
	};

	if (WARN_ON(len > MAX_RD_LEN))
		return -EINVAL;

	buf[0] = (reg >> 0) & 0xff;

	ret = i2c_transfer(dev->client[0]->adapter, msg, 2);
	if (ret == 2) {
		memcpy(val, buf, len);
		ret = 0;
	} else {
		dev_warn(&dev->client[0]->dev,
				"i2c rd failed=%d reg=%02x len=%d\n",
				ret, reg, len);
		ret = -EREMOTEIO;
	}

	return ret;
}

/* write single register */
static int mn88473_wreg(struct mn88473_dev *dev, u16 reg, u8 val)
{
	return mn88473_wregs(dev, reg, &val, 1);
}

/* read single register */
static int mn88473_rreg(struct mn88473_dev *dev, u16 reg, u8 *val)
{
	return mn88473_rregs(dev, reg, val, 1);
}

static int mn88473_get_tune_settings(struct dvb_frontend *fe,
	struct dvb_frontend_tune_settings *s)
{
	s->min_delay_ms = 1000;
	return 0;
}

static int mn88473_set_frontend(struct dvb_frontend *fe)
{
	struct i2c_client *client = fe->demodulator_priv;
	struct mn88473_dev *dev = i2c_get_clientdata(client);
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	int ret, i;
	u32 if_frequency;
	u8 delivery_system_val, if_val[3], bw_val[7];

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

	if (!dev->warm) {
		ret = -EAGAIN;
		goto err;
	}

	switch (c->delivery_system) {
	case SYS_DVBT:
		delivery_system_val = 0x02;
		break;
	case SYS_DVBT2:
		delivery_system_val = 0x03;
		break;
	case SYS_DVBC_ANNEX_A:
		delivery_system_val = 0x04;
		break;
	default:
		ret = -EINVAL;
		goto err;
	}

	switch (c->delivery_system) {
	case SYS_DVBT:
	case SYS_DVBT2:
		if (c->bandwidth_hz <= 6000000) {
			/* IF 3570000 Hz, BW 6000000 Hz */
			memcpy(if_val, "\x24\x8e\x8a", 3);
			memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
		} else if (c->bandwidth_hz <= 7000000) {
			/* IF 4570000 Hz, BW 7000000 Hz */
			memcpy(if_val, "\x2e\xcb\xfb", 3);
			memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
		} else if (c->bandwidth_hz <= 8000000) {
			/* IF 4570000 Hz, BW 8000000 Hz */
			memcpy(if_val, "\x2e\xcb\xfb", 3);
			memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
		} else {
			ret = -EINVAL;
			goto err;
		}
		break;
	case SYS_DVBC_ANNEX_A:
		/* IF 5070000 Hz, BW 8000000 Hz */
		memcpy(if_val, "\x33\xea\xb3", 3);
		memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
		break;
	default:
		ret = -EINVAL;
		goto err;
	}

	/* program tuner */
	if (fe->ops.tuner_ops.set_params) {
		ret = fe->ops.tuner_ops.set_params(fe);
		if (ret)
			goto err;
	}

	if (fe->ops.tuner_ops.get_if_frequency) {
		ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
		if (ret)
			goto err;

		dev_dbg(&client->dev, "get_if_frequency=%d\n", if_frequency);
	} else {
		if_frequency = 0;
	}

	switch (if_frequency) {
	case 3570000:
	case 4570000:
	case 5070000:
		break;
	default:
		dev_err(&client->dev, "IF frequency %d not supported\n",
				if_frequency);
		ret = -EINVAL;
		goto err;
	}

	ret = mn88473_wregs(dev, 0x1c05, "\x00", 1);
	ret = mn88473_wregs(dev, 0x1cfb, "\x13", 1);
	ret = mn88473_wregs(dev, 0x1cef, "\x13", 1);
	ret = mn88473_wregs(dev, 0x1cf9, "\x13", 1);
	ret = mn88473_wregs(dev, 0x1c00, "\x18", 1);
	ret = mn88473_wregs(dev, 0x1c01, "\x01", 1);
	ret = mn88473_wregs(dev, 0x1c02, "\x21", 1);
	ret = mn88473_wreg(dev, 0x1c03, delivery_system_val);
	ret = mn88473_wregs(dev, 0x1c0b, "\x00", 1);

	for (i = 0; i < sizeof(if_val); i++) {
		ret = mn88473_wreg(dev, 0x1c10 + i, if_val[i]);
		if (ret)
			goto err;
	}

	for (i = 0; i < sizeof(bw_val); i++) {
		ret = mn88473_wreg(dev, 0x1c13 + i, bw_val[i]);
		if (ret)
			goto err;
	}

	ret = mn88473_wregs(dev, 0x1c2d, "\x3b", 1);
	ret = mn88473_wregs(dev, 0x1c2e, "\x00", 1);
	ret = mn88473_wregs(dev, 0x1c56, "\x0d", 1);
	ret = mn88473_wregs(dev, 0x1801, "\xba", 1);
	ret = mn88473_wregs(dev, 0x1802, "\x13", 1);
	ret = mn88473_wregs(dev, 0x1803, "\x80", 1);
	ret = mn88473_wregs(dev, 0x1804, "\xba", 1);
	ret = mn88473_wregs(dev, 0x1805, "\x91", 1);
	ret = mn88473_wregs(dev, 0x1807, "\xe7", 1);
	ret = mn88473_wregs(dev, 0x1808, "\x28", 1);
	ret = mn88473_wregs(dev, 0x180a, "\x1a", 1);
	ret = mn88473_wregs(dev, 0x1813, "\x1f", 1);
	ret = mn88473_wregs(dev, 0x1819, "\x03", 1);
	ret = mn88473_wregs(dev, 0x181d, "\xb0", 1);
	ret = mn88473_wregs(dev, 0x182a, "\x72", 1);
	ret = mn88473_wregs(dev, 0x182d, "\x00", 1);
	ret = mn88473_wregs(dev, 0x183c, "\x00", 1);
	ret = mn88473_wregs(dev, 0x183f, "\xf8", 1);
	ret = mn88473_wregs(dev, 0x1840, "\xf4", 1);
	ret = mn88473_wregs(dev, 0x1841, "\x08", 1);
	ret = mn88473_wregs(dev, 0x18d2, "\x29", 1);
	ret = mn88473_wregs(dev, 0x18d4, "\x55", 1);
	ret = mn88473_wregs(dev, 0x1a10, "\x10", 1);
	ret = mn88473_wregs(dev, 0x1a11, "\xab", 1);
	ret = mn88473_wregs(dev, 0x1a12, "\x0d", 1);
	ret = mn88473_wregs(dev, 0x1a13, "\xae", 1);
	ret = mn88473_wregs(dev, 0x1a14, "\x1d", 1);
	ret = mn88473_wregs(dev, 0x1a15, "\x9d", 1);
	ret = mn88473_wregs(dev, 0x1abe, "\x08", 1);
	ret = mn88473_wregs(dev, 0x1c09, "\x08", 1);
	ret = mn88473_wregs(dev, 0x1c08, "\x1d", 1);
	ret = mn88473_wregs(dev, 0x18b2, "\x37", 1);
	ret = mn88473_wregs(dev, 0x18d7, "\x04", 1);
	ret = mn88473_wregs(dev, 0x1c32, "\x80", 1);
	ret = mn88473_wregs(dev, 0x1c36, "\x00", 1);
	ret = mn88473_wregs(dev, 0x1cf8, "\x9f", 1);
	if (ret)
		goto err;

	dev->delivery_system = c->delivery_system;

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

static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
	struct i2c_client *client = fe->demodulator_priv;
	struct mn88473_dev *dev = i2c_get_clientdata(client);
	int ret;

	*status = 0;

	if (!dev->warm) {
		ret = -EAGAIN;
		goto err;
	}

	*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
			FE_HAS_SYNC | FE_HAS_LOCK;

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

static int mn88473_init(struct dvb_frontend *fe)
{
	struct i2c_client *client = fe->demodulator_priv;
	struct mn88473_dev *dev = i2c_get_clientdata(client);
	int ret, len, remaining;
	const struct firmware *fw = NULL;
	u8 *fw_file = MN88473_FIRMWARE;

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

	if (dev->warm)
		return 0;

	/* request the firmware, this will block and timeout */
	ret = request_firmware(&fw, fw_file, &client->dev);
	if (ret) {
		dev_err(&client->dev, "firmare file '%s' not found\n", fw_file);
		goto err;
	}

	dev_info(&client->dev, "downloading firmware from file '%s'\n",
			fw_file);

	ret = mn88473_wreg(dev, 0x18f5, 0x03);
	if (ret)
		goto err;

	for (remaining = fw->size; remaining > 0;
			remaining -= (dev->i2c_wr_max - 1)) {
		len = remaining;
		if (len > (dev->i2c_wr_max - 1))
			len = (dev->i2c_wr_max - 1);

		ret = mn88473_wregs(dev, 0x18f6,
				&fw->data[fw->size - remaining], len);
		if (ret) {
			dev_err(&client->dev, "firmware download failed=%d\n",
					ret);
			goto err;
		}
	}

	ret = mn88473_wreg(dev, 0x18f5, 0x00);
	if (ret)
		goto err;

	release_firmware(fw);
	fw = NULL;

	/* warm state */
	dev->warm = true;

	return 0;
err:
	if (fw)
		release_firmware(fw);

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

static int mn88473_sleep(struct dvb_frontend *fe)
{
	struct i2c_client *client = fe->demodulator_priv;
	struct mn88473_dev *dev = i2c_get_clientdata(client);
	int ret;

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

	ret = mn88473_wreg(dev, 0x1c05, 0x3e);
	if (ret)
		goto err;

	dev->delivery_system = SYS_UNDEFINED;

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

static struct dvb_frontend_ops mn88473_ops = {
	.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC},
	.info = {
		.name = "Panasonic MN88473",
		.caps =	FE_CAN_FEC_1_2                 |
			FE_CAN_FEC_2_3                 |
			FE_CAN_FEC_3_4                 |
			FE_CAN_FEC_5_6                 |
			FE_CAN_FEC_7_8                 |
			FE_CAN_FEC_AUTO                |
			FE_CAN_QPSK                    |
			FE_CAN_QAM_16                  |
			FE_CAN_QAM_32                  |
			FE_CAN_QAM_64                  |
			FE_CAN_QAM_128                 |
			FE_CAN_QAM_256                 |
			FE_CAN_QAM_AUTO                |
			FE_CAN_TRANSMISSION_MODE_AUTO  |
			FE_CAN_GUARD_INTERVAL_AUTO     |
			FE_CAN_HIERARCHY_AUTO          |
			FE_CAN_MUTE_TS                 |
			FE_CAN_2G_MODULATION           |
			FE_CAN_MULTISTREAM
	},

	.get_tune_settings = mn88473_get_tune_settings,

	.init = mn88473_init,
	.sleep = mn88473_sleep,

	.set_frontend = mn88473_set_frontend,

	.read_status = mn88473_read_status,
};

static int mn88473_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
{
	struct mn88473_config *config = client->dev.platform_data;
	struct mn88473_dev *dev;
	int ret;
	u8 u8tmp;

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

	/* Caller really need to provide pointer for frontend we create. */
	if (config->fe == NULL) {
		dev_err(&client->dev, "frontend pointer not defined\n");
		ret = -EINVAL;
		goto err;
	}

	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	if (dev == NULL) {
		ret = -ENOMEM;
		goto err;
	}

	dev->client[0] = client;
	dev->i2c_wr_max = config->i2c_wr_max;

	/* check demod answers to I2C */
	ret = mn88473_rreg(dev, 0x1c00, &u8tmp);
	if (ret)
		goto err_kfree;

	/*
	 * Chip has three I2C addresses for different register pages. Used
	 * addresses are 0x18, 0x1a and 0x1c. We register two dummy clients,
	 * 0x1a and 0x1c, in order to get own I2C client for each register page.
	 */
	dev->client[1] = i2c_new_dummy(client->adapter, 0x1a);
	if (dev->client[1] == NULL) {
		ret = -ENODEV;
		dev_err(&client->dev, "I2C registration failed\n");
		if (ret)
			goto err_kfree;
	}
	i2c_set_clientdata(dev->client[1], dev);

	dev->client[2] = i2c_new_dummy(client->adapter, 0x1c);
	if (dev->client[2] == NULL) {
		ret = -ENODEV;
		dev_err(&client->dev, "2nd I2C registration failed\n");
		if (ret)
			goto err_client_1_i2c_unregister_device;
	}
	i2c_set_clientdata(dev->client[2], dev);

	/* create dvb_frontend */
	memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops));
	dev->fe.demodulator_priv = client;
	*config->fe = &dev->fe;
	i2c_set_clientdata(client, dev);

	dev_info(&dev->client[0]->dev, "Panasonic MN88473 successfully attached\n");
	return 0;

err_client_1_i2c_unregister_device:
	i2c_unregister_device(dev->client[1]);
err_kfree:
	kfree(dev);
err:
	dev_dbg(&client->dev, "failed=%d\n", ret);
	return ret;
}

static int mn88473_remove(struct i2c_client *client)
{
	struct mn88473_dev *dev = i2c_get_clientdata(client);

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

	i2c_unregister_device(dev->client[2]);
	i2c_unregister_device(dev->client[1]);

	kfree(dev);

	return 0;
}

static const struct i2c_device_id mn88473_id_table[] = {
	{"mn88473", 0},
	{}
};
MODULE_DEVICE_TABLE(i2c, mn88473_id_table);

static struct i2c_driver mn88473_driver = {
	.driver = {
		.owner	= THIS_MODULE,
		.name	= "mn88473",
	},
	.probe		= mn88473_probe,
	.remove		= mn88473_remove,
	.id_table	= mn88473_id_table,
};

module_i2c_driver(mn88473_driver);

MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(MN88473_FIRMWARE);
Commit	Line	Data
dadb5bb4 AP	1	/*
	2	* Panasonic MN88473 DVB-T/T2/C demodulator driver
	3	*
	4	* Copyright (C) 2014 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
	17	#include "mn88473_priv.h"
	18
	19	static struct dvb_frontend_ops mn88473_ops;
	20
	21	/* write multiple registers */
	22	static int mn88473_wregs(struct mn88473_dev dev, u16 reg, const u8 val, int len)
	23	{
	24	#define MAX_WR_LEN 21
	25	#define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)
	26	int ret;
	27	u8 buf[MAX_WR_XFER_LEN];
	28	struct i2c_msg msg[1] = {
	29	{
	30	.addr = (reg >> 8) & 0xff,
	31	.flags = 0,
	32	.len = 1 + len,
	33	.buf = buf,
	34	}
	35	};
	36
	37	if (WARN_ON(len > MAX_WR_LEN))
	38	return -EINVAL;
	39
	40	buf[0] = (reg >> 0) & 0xff;
	41	memcpy(&buf[1], val, len);
	42
01b4be14	43	ret = i2c_transfer(dev->client[0]->adapter, msg, 1);
dadb5bb4 AP	44	if (ret == 1) {
	45	ret = 0;
	46	} else {
01b4be14 AP	47	dev_warn(&dev->client[0]->dev,
	48	"i2c wr failed=%d reg=%02x len=%d\n",
	49	ret, reg, len);
dadb5bb4 AP	50	ret = -EREMOTEIO;
	51	}
	52
	53	return ret;
	54	}
	55
	56	/* read multiple registers */
	57	static int mn88473_rregs(struct mn88473_dev dev, u16 reg, u8 val, int len)
	58	{
	59	#define MAX_RD_LEN 2
	60	#define MAX_RD_XFER_LEN (MAX_RD_LEN)
	61	int ret;
	62	u8 buf[MAX_RD_XFER_LEN];
	63	struct i2c_msg msg[2] = {
	64	{
	65	.addr = (reg >> 8) & 0xff,
	66	.flags = 0,
	67	.len = 1,
	68	.buf = buf,
	69	}, {
	70	.addr = (reg >> 8) & 0xff,
	71	.flags = I2C_M_RD,
	72	.len = len,
	73	.buf = buf,
	74	}
	75	};
	76
	77	if (WARN_ON(len > MAX_RD_LEN))
	78	return -EINVAL;
	79
	80	buf[0] = (reg >> 0) & 0xff;
	81
01b4be14	82	ret = i2c_transfer(dev->client[0]->adapter, msg, 2);
dadb5bb4 AP	83	if (ret == 2) {
	84	memcpy(val, buf, len);
	85	ret = 0;
	86	} else {
01b4be14 AP	87	dev_warn(&dev->client[0]->dev,
	88	"i2c rd failed=%d reg=%02x len=%d\n",
	89	ret, reg, len);
dadb5bb4 AP	90	ret = -EREMOTEIO;
	91	}
	92
	93	return ret;
	94	}
	95
	96	/* write single register */
	97	static int mn88473_wreg(struct mn88473_dev *dev, u16 reg, u8 val)
	98	{
	99	return mn88473_wregs(dev, reg, &val, 1);
	100	}
	101
	102	/* read single register */
	103	static int mn88473_rreg(struct mn88473_dev dev, u16 reg, u8 val)
	104	{
	105	return mn88473_rregs(dev, reg, val, 1);
	106	}
	107
	108	static int mn88473_get_tune_settings(struct dvb_frontend *fe,
	109	struct dvb_frontend_tune_settings *s)
	110	{
	111	s->min_delay_ms = 1000;
	112	return 0;
	113	}
	114
	115	static int mn88473_set_frontend(struct dvb_frontend *fe)
	116	{
01b4be14 AP	117	struct i2c_client *client = fe->demodulator_priv;
01b4be14 AP	118	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4	119	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c00a6b9f	120	int ret, i;
df810e8a AP	121	u32 if_frequency;
df810e8a AP	122	u8 delivery_system_val, if_val[3], bw_val[7];
dadb5bb4	123
01b4be14 AP	124	dev_dbg(&client->dev,
	125	"delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
	126	c->delivery_system, c->modulation,
c00a6b9f AP	127	c->frequency, c->bandwidth_hz, c->symbol_rate,
c00a6b9f AP	128	c->inversion, c->stream_id);
dadb5bb4 AP	129
	130	if (!dev->warm) {
	131	ret = -EAGAIN;
	132	goto err;
	133	}
	134
c00a6b9f	135	switch (c->delivery_system) {
6ebbe22d	136	case SYS_DVBT:
df810e8a	137	delivery_system_val = 0x02;
6ebbe22d	138	break;
c00a6b9f	139	case SYS_DVBT2:
df810e8a	140	delivery_system_val = 0x03;
c00a6b9f AP	141	break;
c00a6b9f AP	142	case SYS_DVBC_ANNEX_A:
df810e8a AP	143	delivery_system_val = 0x04;
	144	break;
	145	default:
	146	ret = -EINVAL;
	147	goto err;
	148	}
	149
	150	switch (c->delivery_system) {
	151	case SYS_DVBT:
	152	case SYS_DVBT2:
	153	if (c->bandwidth_hz <= 6000000) {
	154	/* IF 3570000 Hz, BW 6000000 Hz */
	155	memcpy(if_val, "\x24\x8e\x8a", 3);
	156	memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
	157	} else if (c->bandwidth_hz <= 7000000) {
	158	/* IF 4570000 Hz, BW 7000000 Hz */
	159	memcpy(if_val, "\x2e\xcb\xfb", 3);
	160	memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
	161	} else if (c->bandwidth_hz <= 8000000) {
	162	/* IF 4570000 Hz, BW 8000000 Hz */
	163	memcpy(if_val, "\x2e\xcb\xfb", 3);
	164	memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
	165	} else {
	166	ret = -EINVAL;
	167	goto err;
	168	}
	169	break;
	170	case SYS_DVBC_ANNEX_A:
	171	/* IF 5070000 Hz, BW 8000000 Hz */
	172	memcpy(if_val, "\x33\xea\xb3", 3);
	173	memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
c00a6b9f AP	174	break;
	175	default:
	176	ret = -EINVAL;
	177	goto err;
	178	}
	179
dadb5bb4 AP	180	/* program tuner */
	181	if (fe->ops.tuner_ops.set_params) {
	182	ret = fe->ops.tuner_ops.set_params(fe);
	183	if (ret)
	184	goto err;
	185	}
	186
	187	if (fe->ops.tuner_ops.get_if_frequency) {
	188	ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
	189	if (ret)
	190	goto err;
	191
01b4be14	192	dev_dbg(&client->dev, "get_if_frequency=%d\n", if_frequency);
df810e8a AP	193	} else {
df810e8a AP	194	if_frequency = 0;
dadb5bb4 AP	195	}
dadb5bb4 AP	196
c00a6b9f	197	switch (if_frequency) {
df810e8a	198	case 3570000:
c00a6b9f AP	199	case 4570000:
	200	case 5070000:
	201	break;
	202	default:
01b4be14 AP	203	dev_err(&client->dev, "IF frequency %d not supported\n",
01b4be14 AP	204	if_frequency);
dadb5bb4 AP	205	ret = -EINVAL;
	206	goto err;
	207	}
	208
	209	ret = mn88473_wregs(dev, 0x1c05, "\x00", 1);
	210	ret = mn88473_wregs(dev, 0x1cfb, "\x13", 1);
	211	ret = mn88473_wregs(dev, 0x1cef, "\x13", 1);
	212	ret = mn88473_wregs(dev, 0x1cf9, "\x13", 1);
	213	ret = mn88473_wregs(dev, 0x1c00, "\x18", 1);
	214	ret = mn88473_wregs(dev, 0x1c01, "\x01", 1);
	215	ret = mn88473_wregs(dev, 0x1c02, "\x21", 1);
df810e8a	216	ret = mn88473_wreg(dev, 0x1c03, delivery_system_val);
dadb5bb4	217	ret = mn88473_wregs(dev, 0x1c0b, "\x00", 1);
c00a6b9f	218
df810e8a AP	219	for (i = 0; i < sizeof(if_val); i++) {
	220	ret = mn88473_wreg(dev, 0x1c10 + i, if_val[i]);
	221	if (ret)
	222	goto err;
	223	}
	224
	225	for (i = 0; i < sizeof(bw_val); i++) {
	226	ret = mn88473_wreg(dev, 0x1c13 + i, bw_val[i]);
c00a6b9f AP	227	if (ret)
	228	goto err;
	229	}
	230
dadb5bb4 AP	231	ret = mn88473_wregs(dev, 0x1c2d, "\x3b", 1);
	232	ret = mn88473_wregs(dev, 0x1c2e, "\x00", 1);
	233	ret = mn88473_wregs(dev, 0x1c56, "\x0d", 1);
6ebbe22d	234	ret = mn88473_wregs(dev, 0x1801, "\xba", 1);
dadb5bb4 AP	235	ret = mn88473_wregs(dev, 0x1802, "\x13", 1);
	236	ret = mn88473_wregs(dev, 0x1803, "\x80", 1);
	237	ret = mn88473_wregs(dev, 0x1804, "\xba", 1);
	238	ret = mn88473_wregs(dev, 0x1805, "\x91", 1);
6ebbe22d	239	ret = mn88473_wregs(dev, 0x1807, "\xe7", 1);
dadb5bb4 AP	240	ret = mn88473_wregs(dev, 0x1808, "\x28", 1);
	241	ret = mn88473_wregs(dev, 0x180a, "\x1a", 1);
	242	ret = mn88473_wregs(dev, 0x1813, "\x1f", 1);
	243	ret = mn88473_wregs(dev, 0x1819, "\x03", 1);
	244	ret = mn88473_wregs(dev, 0x181d, "\xb0", 1);
	245	ret = mn88473_wregs(dev, 0x182a, "\x72", 1);
	246	ret = mn88473_wregs(dev, 0x182d, "\x00", 1);
	247	ret = mn88473_wregs(dev, 0x183c, "\x00", 1);
	248	ret = mn88473_wregs(dev, 0x183f, "\xf8", 1);
	249	ret = mn88473_wregs(dev, 0x1840, "\xf4", 1);
	250	ret = mn88473_wregs(dev, 0x1841, "\x08", 1);
	251	ret = mn88473_wregs(dev, 0x18d2, "\x29", 1);
	252	ret = mn88473_wregs(dev, 0x18d4, "\x55", 1);
	253	ret = mn88473_wregs(dev, 0x1a10, "\x10", 1);
	254	ret = mn88473_wregs(dev, 0x1a11, "\xab", 1);
	255	ret = mn88473_wregs(dev, 0x1a12, "\x0d", 1);
	256	ret = mn88473_wregs(dev, 0x1a13, "\xae", 1);
	257	ret = mn88473_wregs(dev, 0x1a14, "\x1d", 1);
	258	ret = mn88473_wregs(dev, 0x1a15, "\x9d", 1);
	259	ret = mn88473_wregs(dev, 0x1abe, "\x08", 1);
	260	ret = mn88473_wregs(dev, 0x1c09, "\x08", 1);
	261	ret = mn88473_wregs(dev, 0x1c08, "\x1d", 1);
	262	ret = mn88473_wregs(dev, 0x18b2, "\x37", 1);
	263	ret = mn88473_wregs(dev, 0x18d7, "\x04", 1);
c00a6b9f AP	264	ret = mn88473_wregs(dev, 0x1c32, "\x80", 1);
c00a6b9f AP	265	ret = mn88473_wregs(dev, 0x1c36, "\x00", 1);
dadb5bb4 AP	266	ret = mn88473_wregs(dev, 0x1cf8, "\x9f", 1);
	267	if (ret)
	268	goto err;
	269
	270	dev->delivery_system = c->delivery_system;
	271
	272	return 0;
	273	err:
01b4be14	274	dev_dbg(&client->dev, "failed=%d\n", ret);
dadb5bb4 AP	275	return ret;
	276	}
	277
	278	static int mn88473_read_status(struct dvb_frontend fe, fe_status_t status)
	279	{
01b4be14 AP	280	struct i2c_client *client = fe->demodulator_priv;
01b4be14 AP	281	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4 AP	282	int ret;
	283
	284	*status = 0;
	285
	286	if (!dev->warm) {
	287	ret = -EAGAIN;
	288	goto err;
	289	}
	290
	291	*status = FE_HAS_SIGNAL \| FE_HAS_CARRIER \| FE_HAS_VITERBI \|
	292	FE_HAS_SYNC \| FE_HAS_LOCK;
	293
	294	return 0;
	295	err:
01b4be14	296	dev_dbg(&client->dev, "failed=%d\n", ret);
dadb5bb4 AP	297	return ret;
	298	}
	299
	300	static int mn88473_init(struct dvb_frontend *fe)
	301	{
01b4be14 AP	302	struct i2c_client *client = fe->demodulator_priv;
01b4be14 AP	303	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4 AP	304	int ret, len, remaining;
	305	const struct firmware *fw = NULL;
	306	u8 *fw_file = MN88473_FIRMWARE;
	307
01b4be14	308	dev_dbg(&client->dev, "\n");
dadb5bb4 AP	309
	310	if (dev->warm)
	311	return 0;
	312
	313	/* request the firmware, this will block and timeout */
01b4be14	314	ret = request_firmware(&fw, fw_file, &client->dev);
dadb5bb4	315	if (ret) {
01b4be14	316	dev_err(&client->dev, "firmare file '%s' not found\n", fw_file);
dadb5bb4 AP	317	goto err;
	318	}
	319
01b4be14 AP	320	dev_info(&client->dev, "downloading firmware from file '%s'\n",
01b4be14 AP	321	fw_file);
dadb5bb4 AP	322
	323	ret = mn88473_wreg(dev, 0x18f5, 0x03);
	324	if (ret)
	325	goto err;
	326
	327	for (remaining = fw->size; remaining > 0;
01b4be14	328	remaining -= (dev->i2c_wr_max - 1)) {
dadb5bb4	329	len = remaining;
01b4be14 AP	330	if (len > (dev->i2c_wr_max - 1))
01b4be14 AP	331	len = (dev->i2c_wr_max - 1);
dadb5bb4 AP	332
	333	ret = mn88473_wregs(dev, 0x18f6,
	334	&fw->data[fw->size - remaining], len);
	335	if (ret) {
01b4be14 AP	336	dev_err(&client->dev, "firmware download failed=%d\n",
01b4be14 AP	337	ret);
dadb5bb4 AP	338	goto err;
	339	}
	340	}
	341
	342	ret = mn88473_wreg(dev, 0x18f5, 0x00);
	343	if (ret)
	344	goto err;
	345
	346	release_firmware(fw);
	347	fw = NULL;
	348
	349	/* warm state */
	350	dev->warm = true;
	351
	352	return 0;
	353	err:
	354	if (fw)
	355	release_firmware(fw);
	356
01b4be14	357	dev_dbg(&client->dev, "failed=%d\n", ret);
dadb5bb4 AP	358	return ret;
	359	}
	360
	361	static int mn88473_sleep(struct dvb_frontend *fe)
	362	{
01b4be14 AP	363	struct i2c_client *client = fe->demodulator_priv;
01b4be14 AP	364	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4 AP	365	int ret;
dadb5bb4 AP	366
01b4be14	367	dev_dbg(&client->dev, "\n");
dadb5bb4 AP	368
	369	ret = mn88473_wreg(dev, 0x1c05, 0x3e);
	370	if (ret)
	371	goto err;
	372
	373	dev->delivery_system = SYS_UNDEFINED;
	374
	375	return 0;
	376	err:
01b4be14	377	dev_dbg(&client->dev, "failed=%d\n", ret);
dadb5bb4 AP	378	return ret;
	379	}
	380
01b4be14 AP	381	static struct dvb_frontend_ops mn88473_ops = {
	382	.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC},
	383	.info = {
	384	.name = "Panasonic MN88473",
	385	.caps = FE_CAN_FEC_1_2 \|
	386	FE_CAN_FEC_2_3 \|
	387	FE_CAN_FEC_3_4 \|
	388	FE_CAN_FEC_5_6 \|
	389	FE_CAN_FEC_7_8 \|
	390	FE_CAN_FEC_AUTO \|
	391	FE_CAN_QPSK \|
	392	FE_CAN_QAM_16 \|
	393	FE_CAN_QAM_32 \|
	394	FE_CAN_QAM_64 \|
	395	FE_CAN_QAM_128 \|
	396	FE_CAN_QAM_256 \|
	397	FE_CAN_QAM_AUTO \|
	398	FE_CAN_TRANSMISSION_MODE_AUTO \|
	399	FE_CAN_GUARD_INTERVAL_AUTO \|
	400	FE_CAN_HIERARCHY_AUTO \|
	401	FE_CAN_MUTE_TS \|
	402	FE_CAN_2G_MODULATION \|
	403	FE_CAN_MULTISTREAM
	404	},
	405
	406	.get_tune_settings = mn88473_get_tune_settings,
	407
	408	.init = mn88473_init,
	409	.sleep = mn88473_sleep,
dadb5bb4	410
01b4be14 AP	411	.set_frontend = mn88473_set_frontend,
	412
	413	.read_status = mn88473_read_status,
	414	};
	415
	416	static int mn88473_probe(struct i2c_client *client,
	417	const struct i2c_device_id *id)
dadb5bb4	418	{
01b4be14	419	struct mn88473_config *config = client->dev.platform_data;
dadb5bb4	420	struct mn88473_dev *dev;
01b4be14	421	int ret;
dadb5bb4 AP	422	u8 u8tmp;
dadb5bb4 AP	423
01b4be14	424	dev_dbg(&client->dev, "\n");
dadb5bb4	425
01b4be14 AP	426	/* Caller really need to provide pointer for frontend we create. */
	427	if (config->fe == NULL) {
	428	dev_err(&client->dev, "frontend pointer not defined\n");
	429	ret = -EINVAL;
	430	goto err;
	431	}
	432
	433	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	434	if (dev == NULL) {
dadb5bb4	435	ret = -ENOMEM;
dadb5bb4 AP	436	goto err;
	437	}
	438
01b4be14 AP	439	dev->client[0] = client;
01b4be14 AP	440	dev->i2c_wr_max = config->i2c_wr_max;
dadb5bb4	441
01b4be14	442	/* check demod answers to I2C */
dadb5bb4 AP	443	ret = mn88473_rreg(dev, 0x1c00, &u8tmp);
dadb5bb4 AP	444	if (ret)
01b4be14 AP	445	goto err_kfree;
	446
	447	/*
	448	* Chip has three I2C addresses for different register pages. Used
	449	* addresses are 0x18, 0x1a and 0x1c. We register two dummy clients,
	450	* 0x1a and 0x1c, in order to get own I2C client for each register page.
	451	*/
	452	dev->client[1] = i2c_new_dummy(client->adapter, 0x1a);
	453	if (dev->client[1] == NULL) {
	454	ret = -ENODEV;
	455	dev_err(&client->dev, "I2C registration failed\n");
	456	if (ret)
	457	goto err_kfree;
	458	}
	459	i2c_set_clientdata(dev->client[1], dev);
	460
	461	dev->client[2] = i2c_new_dummy(client->adapter, 0x1c);
	462	if (dev->client[2] == NULL) {
	463	ret = -ENODEV;
	464	dev_err(&client->dev, "2nd I2C registration failed\n");
	465	if (ret)
	466	goto err_client_1_i2c_unregister_device;
	467	}
	468	i2c_set_clientdata(dev->client[2], dev);
dadb5bb4 AP	469
	470	/* create dvb_frontend */
	471	memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops));
01b4be14 AP	472	dev->fe.demodulator_priv = client;
	473	*config->fe = &dev->fe;
	474	i2c_set_clientdata(client, dev);
dadb5bb4	475
01b4be14 AP	476	dev_info(&dev->client[0]->dev, "Panasonic MN88473 successfully attached\n");
	477	return 0;
	478
	479	err_client_1_i2c_unregister_device:
	480	i2c_unregister_device(dev->client[1]);
	481	err_kfree:
dadb5bb4	482	kfree(dev);
01b4be14 AP	483	err:
	484	dev_dbg(&client->dev, "failed=%d\n", ret);
	485	return ret;
dadb5bb4	486	}
dadb5bb4	487
01b4be14 AP	488	static int mn88473_remove(struct i2c_client *client)
	489	{
	490	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4	491
01b4be14	492	dev_dbg(&client->dev, "\n");
dadb5bb4	493
01b4be14 AP	494	i2c_unregister_device(dev->client[2]);
01b4be14 AP	495	i2c_unregister_device(dev->client[1]);
dadb5bb4	496
01b4be14	497	kfree(dev);
dadb5bb4	498
01b4be14 AP	499	return 0;
01b4be14 AP	500	}
dadb5bb4	501
01b4be14 AP	502	static const struct i2c_device_id mn88473_id_table[] = {
	503	{"mn88473", 0},
	504	{}
	505	};
	506	MODULE_DEVICE_TABLE(i2c, mn88473_id_table);
	507
	508	static struct i2c_driver mn88473_driver = {
	509	.driver = {
	510	.owner = THIS_MODULE,
	511	.name = "mn88473",
	512	},
	513	.probe = mn88473_probe,
	514	.remove = mn88473_remove,
	515	.id_table = mn88473_id_table,
dadb5bb4 AP	516	};
dadb5bb4 AP	517
01b4be14 AP	518	module_i2c_driver(mn88473_driver);
01b4be14 AP	519
dadb5bb4 AP	520	MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
	521	MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver");
	522	MODULE_LICENSE("GPL");
	523	MODULE_FIRMWARE(MN88473_FIRMWARE);