[linux-2.6-block.git] / drivers / staging / media / mn88473 / 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 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;
	u64 tmp;
	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;
	}

	if (c->bandwidth_hz <= 6000000) {
		memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
	} else if (c->bandwidth_hz <= 7000000) {
		memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
	} else if (c->bandwidth_hz <= 8000000) {
		memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
	} else {
		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;
	}

	/* Calculate IF registers ( (1<<24)*IF / Xtal ) */
	tmp =  div_u64(if_frequency * (u64)(1<<24) + (dev->xtal / 2),
				   dev->xtal);
	if_val[0] = ((tmp >> 16) & 0xff);
	if_val[1] = ((tmp >>  8) & 0xff);
	if_val[2] = ((tmp >>  0) & 0xff);

	ret = regmap_write(dev->regmap[2], 0x05, 0x00);
	ret = regmap_write(dev->regmap[2], 0xfb, 0x13);
	ret = regmap_write(dev->regmap[2], 0xef, 0x13);
	ret = regmap_write(dev->regmap[2], 0xf9, 0x13);
	ret = regmap_write(dev->regmap[2], 0x00, 0x18);
	ret = regmap_write(dev->regmap[2], 0x01, 0x01);
	ret = regmap_write(dev->regmap[2], 0x02, 0x21);
	ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val);
	ret = regmap_write(dev->regmap[2], 0x0b, 0x00);

	for (i = 0; i < sizeof(if_val); i++) {
		ret = regmap_write(dev->regmap[2], 0x10 + i, if_val[i]);
		if (ret)
			goto err;
	}

	for (i = 0; i < sizeof(bw_val); i++) {
		ret = regmap_write(dev->regmap[2], 0x13 + i, bw_val[i]);
		if (ret)
			goto err;
	}

	ret = regmap_write(dev->regmap[2], 0x2d, 0x3b);
	ret = regmap_write(dev->regmap[2], 0x2e, 0x00);
	ret = regmap_write(dev->regmap[2], 0x56, 0x0d);
	ret = regmap_write(dev->regmap[0], 0x01, 0xba);
	ret = regmap_write(dev->regmap[0], 0x02, 0x13);
	ret = regmap_write(dev->regmap[0], 0x03, 0x80);
	ret = regmap_write(dev->regmap[0], 0x04, 0xba);
	ret = regmap_write(dev->regmap[0], 0x05, 0x91);
	ret = regmap_write(dev->regmap[0], 0x07, 0xe7);
	ret = regmap_write(dev->regmap[0], 0x08, 0x28);
	ret = regmap_write(dev->regmap[0], 0x0a, 0x1a);
	ret = regmap_write(dev->regmap[0], 0x13, 0x1f);
	ret = regmap_write(dev->regmap[0], 0x19, 0x03);
	ret = regmap_write(dev->regmap[0], 0x1d, 0xb0);
	ret = regmap_write(dev->regmap[0], 0x2a, 0x72);
	ret = regmap_write(dev->regmap[0], 0x2d, 0x00);
	ret = regmap_write(dev->regmap[0], 0x3c, 0x00);
	ret = regmap_write(dev->regmap[0], 0x3f, 0xf8);
	ret = regmap_write(dev->regmap[0], 0x40, 0xf4);
	ret = regmap_write(dev->regmap[0], 0x41, 0x08);
	ret = regmap_write(dev->regmap[0], 0xd2, 0x29);
	ret = regmap_write(dev->regmap[0], 0xd4, 0x55);
	ret = regmap_write(dev->regmap[1], 0x10, 0x10);
	ret = regmap_write(dev->regmap[1], 0x11, 0xab);
	ret = regmap_write(dev->regmap[1], 0x12, 0x0d);
	ret = regmap_write(dev->regmap[1], 0x13, 0xae);
	ret = regmap_write(dev->regmap[1], 0x14, 0x1d);
	ret = regmap_write(dev->regmap[1], 0x15, 0x9d);
	ret = regmap_write(dev->regmap[1], 0xbe, 0x08);
	ret = regmap_write(dev->regmap[2], 0x09, 0x08);
	ret = regmap_write(dev->regmap[2], 0x08, 0x1d);
	ret = regmap_write(dev->regmap[0], 0xb2, 0x37);
	ret = regmap_write(dev->regmap[0], 0xd7, 0x04);
	ret = regmap_write(dev->regmap[2], 0x32, 0x80);
	ret = regmap_write(dev->regmap[2], 0x36, 0x00);
	ret = regmap_write(dev->regmap[2], 0xf8, 0x9f);
	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, enum fe_status *status)
{
	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;
	unsigned int utmp;
	int lock = 0;

	*status = 0;

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

	switch (c->delivery_system) {
	case SYS_DVBT:
		ret = regmap_read(dev->regmap[0], 0x62, &utmp);
		if (ret)
			goto err;
		if (!(utmp & 0xA0)) {
			if ((utmp & 0xF) >= 0x03)
				*status |= FE_HAS_SIGNAL;
			if ((utmp & 0xF) >= 0x09)
				lock = 1;
		}
		break;
	case SYS_DVBT2:
		ret = regmap_read(dev->regmap[2], 0x8B, &utmp);
		if (ret)
			goto err;
		if (!(utmp & 0x40)) {
			if ((utmp & 0xF) >= 0x07)
				*status |= FE_HAS_SIGNAL;
			if ((utmp & 0xF) >= 0x0a)
				*status |= FE_HAS_CARRIER;
			if ((utmp & 0xF) >= 0x0d)
				*status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
		}
		break;
	case SYS_DVBC_ANNEX_A:
		ret = regmap_read(dev->regmap[1], 0x85, &utmp);
		if (ret)
			goto err;
		if (!(utmp & 0x40)) {
			ret = regmap_read(dev->regmap[1], 0x89, &utmp);
			if (ret)
				goto err;
			if (utmp & 0x01)
				lock = 1;
		}
		break;
	default:
		ret = -EINVAL;
		goto err;
	}

	if (lock)
		*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;
	unsigned int tmp;

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

	/* set cold state by default */
	dev->warm = false;

	/* check if firmware is already running */
	ret = regmap_read(dev->regmap[0], 0xf5, &tmp);
	if (ret)
		goto err;

	if (!(tmp & 0x1)) {
		dev_info(&client->dev, "firmware already running\n");
		dev->warm = true;
		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_request_firmware;
	}

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

	ret = regmap_write(dev->regmap[0], 0xf5, 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 = regmap_bulk_write(dev->regmap[0], 0xf6,
					&fw->data[fw->size - remaining], len);
		if (ret) {
			dev_err(&client->dev, "firmware download failed=%d\n",
				ret);
			goto err;
		}
	}

	/* parity check of firmware */
	ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
	if (ret) {
		dev_err(&client->dev,
				"parity reg read failed=%d\n", ret);
		goto err;
	}
	if (tmp & 0x10) {
		dev_err(&client->dev,
				"firmware parity check failed=0x%x\n", tmp);
		goto err;
	}
	dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);

	ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
	if (ret)
		goto err;

	release_firmware(fw);
	fw = NULL;

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

	return 0;

err:
	release_firmware(fw);
err_request_firmware:
	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 = regmap_write(dev->regmap[2], 0x05, 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",
		.symbol_rate_min = 1000000,
		.symbol_rate_max = 7200000,
		.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;
	unsigned int utmp;
	static const struct regmap_config regmap_config = {
		.reg_bits = 8,
		.val_bits = 8,
	};

	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->i2c_wr_max = config->i2c_wr_max;
	if (!config->xtal)
		dev->xtal = 25000000;
	else
		dev->xtal = config->xtal;
	dev->client[0] = client;
	dev->regmap[0] = regmap_init_i2c(dev->client[0], &regmap_config);
	if (IS_ERR(dev->regmap[0])) {
		ret = PTR_ERR(dev->regmap[0]);
		goto err_kfree;
	}

	/* check demod answers to I2C */
	ret = regmap_read(dev->regmap[0], 0x00, &utmp);
	if (ret)
		goto err_regmap_0_regmap_exit;

	/*
	 * 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_regmap_0_regmap_exit;
	}
	dev->regmap[1] = regmap_init_i2c(dev->client[1], &regmap_config);
	if (IS_ERR(dev->regmap[1])) {
		ret = PTR_ERR(dev->regmap[1]);
		goto err_client_1_i2c_unregister_device;
	}
	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_regmap_1_regmap_exit;
	}
	dev->regmap[2] = regmap_init_i2c(dev->client[2], &regmap_config);
	if (IS_ERR(dev->regmap[2])) {
		ret = PTR_ERR(dev->regmap[2]);
		goto err_client_2_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_2_i2c_unregister_device:
	i2c_unregister_device(dev->client[2]);
err_regmap_1_regmap_exit:
	regmap_exit(dev->regmap[1]);
err_client_1_i2c_unregister_device:
	i2c_unregister_device(dev->client[1]);
err_regmap_0_regmap_exit:
	regmap_exit(dev->regmap[0]);
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");

	regmap_exit(dev->regmap[2]);
	i2c_unregister_device(dev->client[2]);

	regmap_exit(dev->regmap[1]);
	i2c_unregister_device(dev->client[1]);

	regmap_exit(dev->regmap[0]);

	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
dadb5bb4	19	static int mn88473_get_tune_settings(struct dvb_frontend *fe,
b4c2c314	20	struct dvb_frontend_tune_settings *s)
dadb5bb4 AP	21	{
	22	s->min_delay_ms = 1000;
	23	return 0;
	24	}
	25
	26	static int mn88473_set_frontend(struct dvb_frontend *fe)
	27	{
01b4be14 AP	28	struct i2c_client *client = fe->demodulator_priv;
01b4be14 AP	29	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4	30	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c00a6b9f	31	int ret, i;
df810e8a	32	u32 if_frequency;
3b786f13	33	u64 tmp;
df810e8a	34	u8 delivery_system_val, if_val[3], bw_val[7];
dadb5bb4	35
01b4be14	36	dev_dbg(&client->dev,
b4c2c314 KD	37	"delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
	38	c->delivery_system,
	39	c->modulation,
	40	c->frequency,
	41	c->bandwidth_hz,
	42	c->symbol_rate,
	43	c->inversion,
	44	c->stream_id);
dadb5bb4 AP	45
	46	if (!dev->warm) {
	47	ret = -EAGAIN;
	48	goto err;
	49	}
	50
c00a6b9f	51	switch (c->delivery_system) {
6ebbe22d	52	case SYS_DVBT:
df810e8a	53	delivery_system_val = 0x02;
6ebbe22d	54	break;
c00a6b9f	55	case SYS_DVBT2:
df810e8a	56	delivery_system_val = 0x03;
c00a6b9f AP	57	break;
c00a6b9f AP	58	case SYS_DVBC_ANNEX_A:
df810e8a AP	59	delivery_system_val = 0x04;
	60	break;
	61	default:
	62	ret = -EINVAL;
	63	goto err;
	64	}
	65
3d945be0 BL	66	if (c->bandwidth_hz <= 6000000) {
	67	memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
	68	} else if (c->bandwidth_hz <= 7000000) {
	69	memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
	70	} else if (c->bandwidth_hz <= 8000000) {
df810e8a	71	memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
3d945be0	72	} else {
c00a6b9f AP	73	ret = -EINVAL;
	74	goto err;
	75	}
	76
dadb5bb4 AP	77	/* program tuner */
	78	if (fe->ops.tuner_ops.set_params) {
	79	ret = fe->ops.tuner_ops.set_params(fe);
	80	if (ret)
	81	goto err;
	82	}
	83
	84	if (fe->ops.tuner_ops.get_if_frequency) {
	85	ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
	86	if (ret)
	87	goto err;
	88
01b4be14	89	dev_dbg(&client->dev, "get_if_frequency=%d\n", if_frequency);
df810e8a AP	90	} else {
df810e8a AP	91	if_frequency = 0;
dadb5bb4 AP	92	}
dadb5bb4 AP	93
3b786f13 BL	94	/* Calculate IF registers ( (1<<24)IF / Xtal ) /
	95	tmp = div_u64(if_frequency * (u64)(1<<24) + (dev->xtal / 2),
	96	dev->xtal);
	97	if_val[0] = ((tmp >> 16) & 0xff);
	98	if_val[1] = ((tmp >> 8) & 0xff);
	99	if_val[2] = ((tmp >> 0) & 0xff);
dadb5bb4	100
97de6e89 AP	101	ret = regmap_write(dev->regmap[2], 0x05, 0x00);
	102	ret = regmap_write(dev->regmap[2], 0xfb, 0x13);
	103	ret = regmap_write(dev->regmap[2], 0xef, 0x13);
	104	ret = regmap_write(dev->regmap[2], 0xf9, 0x13);
	105	ret = regmap_write(dev->regmap[2], 0x00, 0x18);
	106	ret = regmap_write(dev->regmap[2], 0x01, 0x01);
	107	ret = regmap_write(dev->regmap[2], 0x02, 0x21);
	108	ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val);
	109	ret = regmap_write(dev->regmap[2], 0x0b, 0x00);
c00a6b9f	110
df810e8a	111	for (i = 0; i < sizeof(if_val); i++) {
97de6e89	112	ret = regmap_write(dev->regmap[2], 0x10 + i, if_val[i]);
df810e8a AP	113	if (ret)
	114	goto err;
	115	}
	116
	117	for (i = 0; i < sizeof(bw_val); i++) {
97de6e89	118	ret = regmap_write(dev->regmap[2], 0x13 + i, bw_val[i]);
c00a6b9f AP	119	if (ret)
	120	goto err;
	121	}
	122
97de6e89 AP	123	ret = regmap_write(dev->regmap[2], 0x2d, 0x3b);
	124	ret = regmap_write(dev->regmap[2], 0x2e, 0x00);
	125	ret = regmap_write(dev->regmap[2], 0x56, 0x0d);
	126	ret = regmap_write(dev->regmap[0], 0x01, 0xba);
	127	ret = regmap_write(dev->regmap[0], 0x02, 0x13);
	128	ret = regmap_write(dev->regmap[0], 0x03, 0x80);
	129	ret = regmap_write(dev->regmap[0], 0x04, 0xba);
	130	ret = regmap_write(dev->regmap[0], 0x05, 0x91);
	131	ret = regmap_write(dev->regmap[0], 0x07, 0xe7);
	132	ret = regmap_write(dev->regmap[0], 0x08, 0x28);
	133	ret = regmap_write(dev->regmap[0], 0x0a, 0x1a);
	134	ret = regmap_write(dev->regmap[0], 0x13, 0x1f);
	135	ret = regmap_write(dev->regmap[0], 0x19, 0x03);
	136	ret = regmap_write(dev->regmap[0], 0x1d, 0xb0);
	137	ret = regmap_write(dev->regmap[0], 0x2a, 0x72);
	138	ret = regmap_write(dev->regmap[0], 0x2d, 0x00);
	139	ret = regmap_write(dev->regmap[0], 0x3c, 0x00);
	140	ret = regmap_write(dev->regmap[0], 0x3f, 0xf8);
	141	ret = regmap_write(dev->regmap[0], 0x40, 0xf4);
	142	ret = regmap_write(dev->regmap[0], 0x41, 0x08);
	143	ret = regmap_write(dev->regmap[0], 0xd2, 0x29);
	144	ret = regmap_write(dev->regmap[0], 0xd4, 0x55);
	145	ret = regmap_write(dev->regmap[1], 0x10, 0x10);
	146	ret = regmap_write(dev->regmap[1], 0x11, 0xab);
	147	ret = regmap_write(dev->regmap[1], 0x12, 0x0d);
	148	ret = regmap_write(dev->regmap[1], 0x13, 0xae);
	149	ret = regmap_write(dev->regmap[1], 0x14, 0x1d);
	150	ret = regmap_write(dev->regmap[1], 0x15, 0x9d);
	151	ret = regmap_write(dev->regmap[1], 0xbe, 0x08);
	152	ret = regmap_write(dev->regmap[2], 0x09, 0x08);
	153	ret = regmap_write(dev->regmap[2], 0x08, 0x1d);
	154	ret = regmap_write(dev->regmap[0], 0xb2, 0x37);
	155	ret = regmap_write(dev->regmap[0], 0xd7, 0x04);
	156	ret = regmap_write(dev->regmap[2], 0x32, 0x80);
	157	ret = regmap_write(dev->regmap[2], 0x36, 0x00);
	158	ret = regmap_write(dev->regmap[2], 0xf8, 0x9f);
dadb5bb4 AP	159	if (ret)
	160	goto err;
	161
	162	dev->delivery_system = c->delivery_system;
	163
	164	return 0;
	165	err:
01b4be14	166	dev_dbg(&client->dev, "failed=%d\n", ret);
dadb5bb4 AP	167	return ret;
	168	}
	169
0df289a2	170	static int mn88473_read_status(struct dvb_frontend fe, enum fe_status status)
dadb5bb4	171	{
01b4be14 AP	172	struct i2c_client *client = fe->demodulator_priv;
01b4be14 AP	173	struct mn88473_dev *dev = i2c_get_clientdata(client);
0aa83bb1	174	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
dadb5bb4	175	int ret;
0aa83bb1 BL	176	unsigned int utmp;
0aa83bb1 BL	177	int lock = 0;
dadb5bb4 AP	178
	179	*status = 0;
	180
	181	if (!dev->warm) {
	182	ret = -EAGAIN;
	183	goto err;
	184	}
	185
0aa83bb1 BL	186	switch (c->delivery_system) {
	187	case SYS_DVBT:
	188	ret = regmap_read(dev->regmap[0], 0x62, &utmp);
	189	if (ret)
	190	goto err;
	191	if (!(utmp & 0xA0)) {
	192	if ((utmp & 0xF) >= 0x03)
	193	*status \|= FE_HAS_SIGNAL;
	194	if ((utmp & 0xF) >= 0x09)
	195	lock = 1;
	196	}
	197	break;
	198	case SYS_DVBT2:
	199	ret = regmap_read(dev->regmap[2], 0x8B, &utmp);
	200	if (ret)
	201	goto err;
	202	if (!(utmp & 0x40)) {
	203	if ((utmp & 0xF) >= 0x07)
	204	*status \|= FE_HAS_SIGNAL;
	205	if ((utmp & 0xF) >= 0x0a)
	206	*status \|= FE_HAS_CARRIER;
	207	if ((utmp & 0xF) >= 0x0d)
	208	*status \|= FE_HAS_VITERBI \| FE_HAS_SYNC \| FE_HAS_LOCK;
	209	}
	210	break;
	211	case SYS_DVBC_ANNEX_A:
	212	ret = regmap_read(dev->regmap[1], 0x85, &utmp);
	213	if (ret)
	214	goto err;
	215	if (!(utmp & 0x40)) {
	216	ret = regmap_read(dev->regmap[1], 0x89, &utmp);
	217	if (ret)
	218	goto err;
	219	if (utmp & 0x01)
	220	lock = 1;
	221	}
	222	break;
	223	default:
	224	ret = -EINVAL;
	225	goto err;
	226	}
	227
	228	if (lock)
	229	*status = FE_HAS_SIGNAL \| FE_HAS_CARRIER \| FE_HAS_VITERBI \|
	230	FE_HAS_SYNC \| FE_HAS_LOCK;
dadb5bb4 AP	231
	232	return 0;
	233	err:
01b4be14	234	dev_dbg(&client->dev, "failed=%d\n", ret);
dadb5bb4 AP	235	return ret;
	236	}
	237
	238	static int mn88473_init(struct dvb_frontend *fe)
	239	{
01b4be14 AP	240	struct i2c_client *client = fe->demodulator_priv;
01b4be14 AP	241	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4 AP	242	int ret, len, remaining;
	243	const struct firmware *fw = NULL;
	244	u8 *fw_file = MN88473_FIRMWARE;
0f21ac7f	245	unsigned int tmp;
dadb5bb4	246
01b4be14	247	dev_dbg(&client->dev, "\n");
dadb5bb4	248
567627bf BL	249	/* set cold state by default */
	250	dev->warm = false;
	251
	252	/* check if firmware is already running */
	253	ret = regmap_read(dev->regmap[0], 0xf5, &tmp);
	254	if (ret)
	255	goto err;
	256
	257	if (!(tmp & 0x1)) {
	258	dev_info(&client->dev, "firmware already running\n");
	259	dev->warm = true;
dadb5bb4	260	return 0;
567627bf	261	}
dadb5bb4 AP	262
dadb5bb4 AP	263	/* request the firmware, this will block and timeout */
01b4be14	264	ret = request_firmware(&fw, fw_file, &client->dev);
dadb5bb4	265	if (ret) {
01b4be14	266	dev_err(&client->dev, "firmare file '%s' not found\n", fw_file);
71947828	267	goto err_request_firmware;
dadb5bb4 AP	268	}
dadb5bb4 AP	269
01b4be14	270	dev_info(&client->dev, "downloading firmware from file '%s'\n",
b4c2c314	271	fw_file);
dadb5bb4	272
97de6e89	273	ret = regmap_write(dev->regmap[0], 0xf5, 0x03);
dadb5bb4 AP	274	if (ret)
	275	goto err;
	276
	277	for (remaining = fw->size; remaining > 0;
01b4be14	278	remaining -= (dev->i2c_wr_max - 1)) {
dadb5bb4	279	len = remaining;
01b4be14	280	if (len > (dev->i2c_wr_max - 1))
8126e17f	281	len = dev->i2c_wr_max - 1;
dadb5bb4	282
97de6e89	283	ret = regmap_bulk_write(dev->regmap[0], 0xf6,
b4c2c314	284	&fw->data[fw->size - remaining], len);
dadb5bb4	285	if (ret) {
01b4be14	286	dev_err(&client->dev, "firmware download failed=%d\n",
b4c2c314	287	ret);
dadb5bb4 AP	288	goto err;
	289	}
	290	}
	291
0f21ac7f BL	292	/* parity check of firmware */
	293	ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
	294	if (ret) {
	295	dev_err(&client->dev,
	296	"parity reg read failed=%d\n", ret);
	297	goto err;
	298	}
	299	if (tmp & 0x10) {
	300	dev_err(&client->dev,
	301	"firmware parity check failed=0x%x\n", tmp);
	302	goto err;
	303	}
	304	dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);
	305
97de6e89	306	ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
dadb5bb4 AP	307	if (ret)
	308	goto err;
	309
	310	release_firmware(fw);
	311	fw = NULL;
	312
	313	/* warm state */
	314	dev->warm = true;
	315
	316	return 0;
71947828	317
dadb5bb4	318	err:
b5911384	319	release_firmware(fw);
71947828	320	err_request_firmware:
01b4be14	321	dev_dbg(&client->dev, "failed=%d\n", ret);
dadb5bb4 AP	322	return ret;
	323	}
	324
	325	static int mn88473_sleep(struct dvb_frontend *fe)
	326	{
01b4be14 AP	327	struct i2c_client *client = fe->demodulator_priv;
01b4be14 AP	328	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4 AP	329	int ret;
dadb5bb4 AP	330
01b4be14	331	dev_dbg(&client->dev, "\n");
dadb5bb4	332
97de6e89	333	ret = regmap_write(dev->regmap[2], 0x05, 0x3e);
dadb5bb4 AP	334	if (ret)
	335	goto err;
	336
	337	dev->delivery_system = SYS_UNDEFINED;
	338
	339	return 0;
	340	err:
01b4be14	341	dev_dbg(&client->dev, "failed=%d\n", ret);
dadb5bb4 AP	342	return ret;
	343	}
	344
01b4be14 AP	345	static struct dvb_frontend_ops mn88473_ops = {
	346	.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC},
	347	.info = {
	348	.name = "Panasonic MN88473",
8459e41d AP	349	.symbol_rate_min = 1000000,
8459e41d AP	350	.symbol_rate_max = 7200000,
01b4be14 AP	351	.caps = FE_CAN_FEC_1_2 \|
	352	FE_CAN_FEC_2_3 \|
	353	FE_CAN_FEC_3_4 \|
	354	FE_CAN_FEC_5_6 \|
	355	FE_CAN_FEC_7_8 \|
	356	FE_CAN_FEC_AUTO \|
	357	FE_CAN_QPSK \|
	358	FE_CAN_QAM_16 \|
	359	FE_CAN_QAM_32 \|
	360	FE_CAN_QAM_64 \|
	361	FE_CAN_QAM_128 \|
	362	FE_CAN_QAM_256 \|
	363	FE_CAN_QAM_AUTO \|
	364	FE_CAN_TRANSMISSION_MODE_AUTO \|
	365	FE_CAN_GUARD_INTERVAL_AUTO \|
	366	FE_CAN_HIERARCHY_AUTO \|
	367	FE_CAN_MUTE_TS \|
	368	FE_CAN_2G_MODULATION \|
	369	FE_CAN_MULTISTREAM
	370	},
	371
	372	.get_tune_settings = mn88473_get_tune_settings,
	373
	374	.init = mn88473_init,
	375	.sleep = mn88473_sleep,
dadb5bb4	376
01b4be14 AP	377	.set_frontend = mn88473_set_frontend,
	378
	379	.read_status = mn88473_read_status,
	380	};
	381
	382	static int mn88473_probe(struct i2c_client *client,
b4c2c314	383	const struct i2c_device_id *id)
dadb5bb4	384	{
01b4be14	385	struct mn88473_config *config = client->dev.platform_data;
dadb5bb4	386	struct mn88473_dev *dev;
01b4be14	387	int ret;
97de6e89 AP	388	unsigned int utmp;
	389	static const struct regmap_config regmap_config = {
	390	.reg_bits = 8,
	391	.val_bits = 8,
	392	};
dadb5bb4	393
01b4be14	394	dev_dbg(&client->dev, "\n");
dadb5bb4	395
01b4be14 AP	396	/* Caller really need to provide pointer for frontend we create. */
	397	if (config->fe == NULL) {
	398	dev_err(&client->dev, "frontend pointer not defined\n");
	399	ret = -EINVAL;
	400	goto err;
	401	}
	402
	403	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	404	if (dev == NULL) {
dadb5bb4	405	ret = -ENOMEM;
dadb5bb4 AP	406	goto err;
	407	}
	408
01b4be14	409	dev->i2c_wr_max = config->i2c_wr_max;
3b786f13 BL	410	if (!config->xtal)
	411	dev->xtal = 25000000;
	412	else
	413	dev->xtal = config->xtal;
97de6e89 AP	414	dev->client[0] = client;
	415	dev->regmap[0] = regmap_init_i2c(dev->client[0], &regmap_config);
	416	if (IS_ERR(dev->regmap[0])) {
	417	ret = PTR_ERR(dev->regmap[0]);
	418	goto err_kfree;
	419	}
dadb5bb4	420
01b4be14	421	/* check demod answers to I2C */
97de6e89	422	ret = regmap_read(dev->regmap[0], 0x00, &utmp);
dadb5bb4	423	if (ret)
97de6e89	424	goto err_regmap_0_regmap_exit;
01b4be14 AP	425
	426	/*
	427	* Chip has three I2C addresses for different register pages. Used
	428	* addresses are 0x18, 0x1a and 0x1c. We register two dummy clients,
	429	* 0x1a and 0x1c, in order to get own I2C client for each register page.
	430	*/
	431	dev->client[1] = i2c_new_dummy(client->adapter, 0x1a);
	432	if (dev->client[1] == NULL) {
	433	ret = -ENODEV;
	434	dev_err(&client->dev, "I2C registration failed\n");
	435	if (ret)
97de6e89 AP	436	goto err_regmap_0_regmap_exit;
	437	}
	438	dev->regmap[1] = regmap_init_i2c(dev->client[1], &regmap_config);
	439	if (IS_ERR(dev->regmap[1])) {
	440	ret = PTR_ERR(dev->regmap[1]);
	441	goto err_client_1_i2c_unregister_device;
01b4be14 AP	442	}
	443	i2c_set_clientdata(dev->client[1], dev);
	444
	445	dev->client[2] = i2c_new_dummy(client->adapter, 0x1c);
	446	if (dev->client[2] == NULL) {
	447	ret = -ENODEV;
	448	dev_err(&client->dev, "2nd I2C registration failed\n");
	449	if (ret)
97de6e89 AP	450	goto err_regmap_1_regmap_exit;
	451	}
	452	dev->regmap[2] = regmap_init_i2c(dev->client[2], &regmap_config);
	453	if (IS_ERR(dev->regmap[2])) {
	454	ret = PTR_ERR(dev->regmap[2]);
	455	goto err_client_2_i2c_unregister_device;
01b4be14 AP	456	}
01b4be14 AP	457	i2c_set_clientdata(dev->client[2], dev);
dadb5bb4 AP	458
	459	/* create dvb_frontend */
	460	memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops));
01b4be14 AP	461	dev->fe.demodulator_priv = client;
	462	*config->fe = &dev->fe;
	463	i2c_set_clientdata(client, dev);
dadb5bb4	464
01b4be14 AP	465	dev_info(&dev->client[0]->dev, "Panasonic MN88473 successfully attached\n");
	466	return 0;
	467
97de6e89 AP	468	err_client_2_i2c_unregister_device:
	469	i2c_unregister_device(dev->client[2]);
	470	err_regmap_1_regmap_exit:
	471	regmap_exit(dev->regmap[1]);
01b4be14 AP	472	err_client_1_i2c_unregister_device:
01b4be14 AP	473	i2c_unregister_device(dev->client[1]);
97de6e89 AP	474	err_regmap_0_regmap_exit:
97de6e89 AP	475	regmap_exit(dev->regmap[0]);
01b4be14	476	err_kfree:
dadb5bb4	477	kfree(dev);
01b4be14 AP	478	err:
	479	dev_dbg(&client->dev, "failed=%d\n", ret);
	480	return ret;
dadb5bb4	481	}
dadb5bb4	482
01b4be14 AP	483	static int mn88473_remove(struct i2c_client *client)
	484	{
	485	struct mn88473_dev *dev = i2c_get_clientdata(client);
dadb5bb4	486
01b4be14	487	dev_dbg(&client->dev, "\n");
dadb5bb4	488
97de6e89	489	regmap_exit(dev->regmap[2]);
01b4be14	490	i2c_unregister_device(dev->client[2]);
97de6e89 AP	491
97de6e89 AP	492	regmap_exit(dev->regmap[1]);
01b4be14	493	i2c_unregister_device(dev->client[1]);
dadb5bb4	494
97de6e89 AP	495	regmap_exit(dev->regmap[0]);
97de6e89 AP	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);