[deliverable/linux.git] / drivers / media / tuners / si2157.c

/*
 * Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner 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 "si2157_priv.h"

static const struct dvb_tuner_ops si2157_ops;

/* execute firmware command */
static int si2157_cmd_execute(struct i2c_client *client, struct si2157_cmd *cmd)
{
	struct si2157_dev *dev = i2c_get_clientdata(client);
	int ret;
	unsigned long timeout;

	mutex_lock(&dev->i2c_mutex);

	if (cmd->wlen) {
		/* write cmd and args for firmware */
		ret = i2c_master_send(client, cmd->args, cmd->wlen);
		if (ret < 0) {
			goto err_mutex_unlock;
		} else if (ret != cmd->wlen) {
			ret = -EREMOTEIO;
			goto err_mutex_unlock;
		}
	}

	if (cmd->rlen) {
		/* wait cmd execution terminate */
		#define TIMEOUT 80
		timeout = jiffies + msecs_to_jiffies(TIMEOUT);
		while (!time_after(jiffies, timeout)) {
			ret = i2c_master_recv(client, cmd->args, cmd->rlen);
			if (ret < 0) {
				goto err_mutex_unlock;
			} else if (ret != cmd->rlen) {
				ret = -EREMOTEIO;
				goto err_mutex_unlock;
			}

			/* firmware ready? */
			if ((cmd->args[0] >> 7) & 0x01)
				break;
		}

		dev_dbg(&client->dev, "cmd execution took %d ms\n",
				jiffies_to_msecs(jiffies) -
				(jiffies_to_msecs(timeout) - TIMEOUT));

		if (!((cmd->args[0] >> 7) & 0x01)) {
			ret = -ETIMEDOUT;
			goto err_mutex_unlock;
		}
	}

	mutex_unlock(&dev->i2c_mutex);
	return 0;

err_mutex_unlock:
	mutex_unlock(&dev->i2c_mutex);
	dev_dbg(&client->dev, "failed=%d\n", ret);
	return ret;
}

static int si2157_init(struct dvb_frontend *fe)
{
	struct i2c_client *client = fe->tuner_priv;
	struct si2157_dev *dev = i2c_get_clientdata(client);
	int ret, len, remaining;
	struct si2157_cmd cmd;
	const struct firmware *fw;
	const char *fw_name;
	unsigned int chip_id;

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

	if (dev->fw_loaded)
		goto warm;

	/* power up */
	if (dev->chiptype == SI2157_CHIPTYPE_SI2146) {
		memcpy(cmd.args, "\xc0\x05\x01\x00\x00\x0b\x00\x00\x01", 9);
		cmd.wlen = 9;
	} else {
		memcpy(cmd.args, "\xc0\x00\x0c\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01", 15);
		cmd.wlen = 15;
	}
	cmd.rlen = 1;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err;

	/* query chip revision */
	memcpy(cmd.args, "\x02", 1);
	cmd.wlen = 1;
	cmd.rlen = 13;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err;

	chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
			cmd.args[4] << 0;

	#define SI2158_A20 ('A' << 24 | 58 << 16 | '2' << 8 | '0' << 0)
	#define SI2148_A20 ('A' << 24 | 48 << 16 | '2' << 8 | '0' << 0)
	#define SI2157_A30 ('A' << 24 | 57 << 16 | '3' << 8 | '0' << 0)
	#define SI2147_A30 ('A' << 24 | 47 << 16 | '3' << 8 | '0' << 0)
	#define SI2146_A10 ('A' << 24 | 46 << 16 | '1' << 8 | '0' << 0)

	switch (chip_id) {
	case SI2158_A20:
	case SI2148_A20:
		fw_name = SI2158_A20_FIRMWARE;
		break;
	case SI2157_A30:
	case SI2147_A30:
	case SI2146_A10:
		fw_name = NULL;
		break;
	default:
		dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
				cmd.args[2], cmd.args[1],
				cmd.args[3], cmd.args[4]);
		ret = -EINVAL;
		goto err;
	}

	dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
			cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);

	if (fw_name == NULL)
		goto skip_fw_download;

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

	/* firmware should be n chunks of 17 bytes */
	if (fw->size % 17 != 0) {
		dev_err(&client->dev, "firmware file '%s' is invalid\n",
				fw_name);
		ret = -EINVAL;
		goto err_release_firmware;
	}

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

	for (remaining = fw->size; remaining > 0; remaining -= 17) {
		len = fw->data[fw->size - remaining];
		memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
		cmd.wlen = len;
		cmd.rlen = 1;
		ret = si2157_cmd_execute(client, &cmd);
		if (ret) {
			dev_err(&client->dev, "firmware download failed %d\n",
					ret);
			goto err_release_firmware;
		}
	}

	release_firmware(fw);

skip_fw_download:
	/* reboot the tuner with new firmware? */
	memcpy(cmd.args, "\x01\x01", 2);
	cmd.wlen = 2;
	cmd.rlen = 1;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err;

	/* query firmware version */
	memcpy(cmd.args, "\x11", 1);
	cmd.wlen = 1;
	cmd.rlen = 10;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err;

	dev_info(&client->dev, "firmware version: %c.%c.%d\n",
			cmd.args[6], cmd.args[7], cmd.args[8]);

	dev->fw_loaded = true;

warm:
	dev->active = true;
	return 0;

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

static int si2157_sleep(struct dvb_frontend *fe)
{
	struct i2c_client *client = fe->tuner_priv;
	struct si2157_dev *dev = i2c_get_clientdata(client);
	int ret;
	struct si2157_cmd cmd;

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

	dev->active = false;

	/* standby */
	memcpy(cmd.args, "\x16\x00", 2);
	cmd.wlen = 2;
	cmd.rlen = 1;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err;

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

static int si2157_set_params(struct dvb_frontend *fe)
{
	struct i2c_client *client = fe->tuner_priv;
	struct si2157_dev *dev = i2c_get_clientdata(client);
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	int ret;
	struct si2157_cmd cmd;
	u8 bandwidth, delivery_system;

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

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

	if (c->bandwidth_hz <= 6000000)
		bandwidth = 0x06;
	else if (c->bandwidth_hz <= 7000000)
		bandwidth = 0x07;
	else if (c->bandwidth_hz <= 8000000)
		bandwidth = 0x08;
	else
		bandwidth = 0x0f;

	switch (c->delivery_system) {
	case SYS_ATSC:
			delivery_system = 0x00;
			break;
	case SYS_DVBC_ANNEX_B:
			delivery_system = 0x10;
			break;
	case SYS_DVBT:
	case SYS_DVBT2: /* it seems DVB-T and DVB-T2 both are 0x20 here */
			delivery_system = 0x20;
			break;
	case SYS_DVBC_ANNEX_A:
			delivery_system = 0x30;
			break;
	default:
			ret = -EINVAL;
			goto err;
	}

	memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6);
	cmd.args[4] = delivery_system | bandwidth;
	if (dev->inversion)
		cmd.args[5] = 0x01;
	cmd.wlen = 6;
	cmd.rlen = 4;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err;

	if (dev->chiptype == SI2157_CHIPTYPE_SI2146)
		memcpy(cmd.args, "\x14\x00\x02\x07\x00\x01", 6);
	else
		memcpy(cmd.args, "\x14\x00\x02\x07\x01\x00", 6);
	cmd.wlen = 6;
	cmd.rlen = 4;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err;

	/* set frequency */
	memcpy(cmd.args, "\x41\x00\x00\x00\x00\x00\x00\x00", 8);
	cmd.args[4] = (c->frequency >>  0) & 0xff;
	cmd.args[5] = (c->frequency >>  8) & 0xff;
	cmd.args[6] = (c->frequency >> 16) & 0xff;
	cmd.args[7] = (c->frequency >> 24) & 0xff;
	cmd.wlen = 8;
	cmd.rlen = 1;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err;

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

static int si2157_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
	*frequency = 5000000; /* default value of property 0x0706 */
	return 0;
}

static const struct dvb_tuner_ops si2157_ops = {
	.info = {
		.name           = "Silicon Labs Si2146/2147/2148/2157/2158",
		.frequency_min  = 110000000,
		.frequency_max  = 862000000,
	},

	.init = si2157_init,
	.sleep = si2157_sleep,
	.set_params = si2157_set_params,
	.get_if_frequency = si2157_get_if_frequency,
};

static int si2157_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
{
	struct si2157_config *cfg = client->dev.platform_data;
	struct dvb_frontend *fe = cfg->fe;
	struct si2157_dev *dev;
	struct si2157_cmd cmd;
	int ret;

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

	i2c_set_clientdata(client, dev);
	dev->fe = cfg->fe;
	dev->inversion = cfg->inversion;
	dev->fw_loaded = false;
	dev->chiptype = (u8)id->driver_data;
	mutex_init(&dev->i2c_mutex);

	/* check if the tuner is there */
	cmd.wlen = 0;
	cmd.rlen = 1;
	ret = si2157_cmd_execute(client, &cmd);
	if (ret)
		goto err_kfree;

	memcpy(&fe->ops.tuner_ops, &si2157_ops, sizeof(struct dvb_tuner_ops));
	fe->tuner_priv = client;

	dev_info(&client->dev, "Silicon Labs %s successfully attached\n",
			dev->chiptype == SI2157_CHIPTYPE_SI2146 ?
			"Si2146" : "Si2147/2148/2157/2158");

	return 0;

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

static int si2157_remove(struct i2c_client *client)
{
	struct si2157_dev *dev = i2c_get_clientdata(client);
	struct dvb_frontend *fe = dev->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 si2157_id_table[] = {
	{"si2157", SI2157_CHIPTYPE_SI2157},
	{"si2146", SI2157_CHIPTYPE_SI2146},
	{}
};
MODULE_DEVICE_TABLE(i2c, si2157_id_table);

static struct i2c_driver si2157_driver = {
	.driver = {
		.owner	= THIS_MODULE,
		.name	= "si2157",
	},
	.probe		= si2157_probe,
	.remove		= si2157_remove,
	.id_table	= si2157_id_table,
};

module_i2c_driver(si2157_driver);

MODULE_DESCRIPTION("Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(SI2158_A20_FIRMWARE);
Commit	Line	Data
ba92ae0f	1	/*
17ad09f1	2	* Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner driver
ba92ae0f AP	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
930a8730 AP	17	#include "si2157_priv.h"
930a8730 AP	18
1b92373f OS	19	static const struct dvb_tuner_ops si2157_ops;
1b92373f OS	20
930a8730	21	/* execute firmware command */
8fe51725	22	static int si2157_cmd_execute(struct i2c_client client, struct si2157_cmd cmd)
930a8730	23	{
8fe51725	24	struct si2157_dev *dev = i2c_get_clientdata(client);
930a8730	25	int ret;
930a8730 AP	26	unsigned long timeout;
930a8730 AP	27
70f13ff0	28	mutex_lock(&dev->i2c_mutex);
930a8730	29
e6b4380f	30	if (cmd->wlen) {
930a8730	31	/* write cmd and args for firmware */
8fe51725	32	ret = i2c_master_send(client, cmd->args, cmd->wlen);
930a8730 AP	33	if (ret < 0) {
930a8730 AP	34	goto err_mutex_unlock;
e6b4380f	35	} else if (ret != cmd->wlen) {
930a8730 AP	36	ret = -EREMOTEIO;
	37	goto err_mutex_unlock;
	38	}
	39	}
	40
e6b4380f AP	41	if (cmd->rlen) {
	42	/* wait cmd execution terminate */
	43	#define TIMEOUT 80
	44	timeout = jiffies + msecs_to_jiffies(TIMEOUT);
	45	while (!time_after(jiffies, timeout)) {
8fe51725	46	ret = i2c_master_recv(client, cmd->args, cmd->rlen);
e6b4380f AP	47	if (ret < 0) {
	48	goto err_mutex_unlock;
	49	} else if (ret != cmd->rlen) {
	50	ret = -EREMOTEIO;
	51	goto err_mutex_unlock;
	52	}
	53
	54	/* firmware ready? */
	55	if ((cmd->args[0] >> 7) & 0x01)
	56	break;
930a8730 AP	57	}
930a8730 AP	58
8fe51725	59	dev_dbg(&client->dev, "cmd execution took %d ms\n",
e6b4380f AP	60	jiffies_to_msecs(jiffies) -
e6b4380f AP	61	(jiffies_to_msecs(timeout) - TIMEOUT));
930a8730	62
e6b4380f AP	63	if (!((cmd->args[0] >> 7) & 0x01)) {
	64	ret = -ETIMEDOUT;
	65	goto err_mutex_unlock;
	66	}
930a8730 AP	67	}
930a8730 AP	68
7cbf5d76 AP	69	mutex_unlock(&dev->i2c_mutex);
7cbf5d76 AP	70	return 0;
e6b4380f	71
930a8730	72	err_mutex_unlock:
70f13ff0	73	mutex_unlock(&dev->i2c_mutex);
8fe51725	74	dev_dbg(&client->dev, "failed=%d\n", ret);
930a8730 AP	75	return ret;
	76	}
	77
	78	static int si2157_init(struct dvb_frontend *fe)
	79	{
8fe51725 AP	80	struct i2c_client *client = fe->tuner_priv;
8fe51725 AP	81	struct si2157_dev *dev = i2c_get_clientdata(client);
7d6bc608	82	int ret, len, remaining;
b154121c	83	struct si2157_cmd cmd;
78dab40a	84	const struct firmware *fw;
08272db6	85	const char *fw_name;
7d6bc608	86	unsigned int chip_id;
930a8730	87
8fe51725	88	dev_dbg(&client->dev, "\n");
930a8730	89
70f13ff0	90	if (dev->fw_loaded)
4cbf6ed9 OS	91	goto warm;
	92
	93	/* power up */
70f13ff0	94	if (dev->chiptype == SI2157_CHIPTYPE_SI2146) {
073f3849 OS	95	memcpy(cmd.args, "\xc0\x05\x01\x00\x00\x0b\x00\x00\x01", 9);
	96	cmd.wlen = 9;
	97	} else {
	98	memcpy(cmd.args, "\xc0\x00\x0c\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01", 15);
	99	cmd.wlen = 15;
	100	}
b154121c	101	cmd.rlen = 1;
8fe51725	102	ret = si2157_cmd_execute(client, &cmd);
b154121c OS	103	if (ret)
	104	goto err;
	105
	106	/* query chip revision */
	107	memcpy(cmd.args, "\x02", 1);
	108	cmd.wlen = 1;
	109	cmd.rlen = 13;
8fe51725	110	ret = si2157_cmd_execute(client, &cmd);
b154121c OS	111	if (ret)
	112	goto err;
	113
7d6bc608 AP	114	chip_id = cmd.args[1] << 24 \| cmd.args[2] << 16 \| cmd.args[3] << 8 \|
	115	cmd.args[4] << 0;
	116
	117	#define SI2158_A20 ('A' << 24 \| 58 << 16 \| '2' << 8 \| '0' << 0)
17ad09f1	118	#define SI2148_A20 ('A' << 24 \| 48 << 16 \| '2' << 8 \| '0' << 0)
7d6bc608	119	#define SI2157_A30 ('A' << 24 \| 57 << 16 \| '3' << 8 \| '0' << 0)
d87a5058	120	#define SI2147_A30 ('A' << 24 \| 47 << 16 \| '3' << 8 \| '0' << 0)
073f3849	121	#define SI2146_A10 ('A' << 24 \| 46 << 16 \| '1' << 8 \| '0' << 0)
7d6bc608 AP	122
	123	switch (chip_id) {
	124	case SI2158_A20:
17ad09f1	125	case SI2148_A20:
08272db6	126	fw_name = SI2158_A20_FIRMWARE;
7d6bc608 AP	127	break;
7d6bc608 AP	128	case SI2157_A30:
d87a5058	129	case SI2147_A30:
073f3849	130	case SI2146_A10:
08272db6	131	fw_name = NULL;
6c372533	132	break;
7d6bc608	133	default:
8fe51725	134	dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
67d0113a	135	cmd.args[2], cmd.args[1],
7d6bc608 AP	136	cmd.args[3], cmd.args[4]);
	137	ret = -EINVAL;
	138	goto err;
	139	}
1b92373f	140
6c372533 AP	141	dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
	142	cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
	143
08272db6	144	if (fw_name == NULL)
6c372533	145	goto skip_fw_download;
1b92373f	146
7d6bc608	147	/* request the firmware, this will block and timeout */
08272db6	148	ret = request_firmware(&fw, fw_name, &client->dev);
7d6bc608	149	if (ret) {
8fe51725	150	dev_err(&client->dev, "firmware file '%s' not found\n",
08272db6	151	fw_name);
7d6bc608 AP	152	goto err;
7d6bc608 AP	153	}
1b92373f	154
7d6bc608 AP	155	/* firmware should be n chunks of 17 bytes */
7d6bc608 AP	156	if (fw->size % 17 != 0) {
8fe51725	157	dev_err(&client->dev, "firmware file '%s' is invalid\n",
08272db6	158	fw_name);
7d6bc608	159	ret = -EINVAL;
78dab40a	160	goto err_release_firmware;
7d6bc608	161	}
1b92373f	162
8fe51725	163	dev_info(&client->dev, "downloading firmware from file '%s'\n",
08272db6	164	fw_name);
1b92373f	165
7d6bc608 AP	166	for (remaining = fw->size; remaining > 0; remaining -= 17) {
	167	len = fw->data[fw->size - remaining];
	168	memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
	169	cmd.wlen = len;
	170	cmd.rlen = 1;
8fe51725	171	ret = si2157_cmd_execute(client, &cmd);
7d6bc608	172	if (ret) {
8fe51725	173	dev_err(&client->dev, "firmware download failed %d\n",
67d0113a	174	ret);
78dab40a	175	goto err_release_firmware;
1b92373f	176	}
1b92373f OS	177	}
1b92373f OS	178
7d6bc608	179	release_firmware(fw);
7d6bc608 AP	180
7d6bc608 AP	181	skip_fw_download:
b154121c OS	182	/* reboot the tuner with new firmware? */
	183	memcpy(cmd.args, "\x01\x01", 2);
	184	cmd.wlen = 2;
	185	cmd.rlen = 1;
8fe51725	186	ret = si2157_cmd_execute(client, &cmd);
b154121c OS	187	if (ret)
	188	goto err;
	189
c7011845 AP	190	/* query firmware version */
	191	memcpy(cmd.args, "\x11", 1);
	192	cmd.wlen = 1;
	193	cmd.rlen = 10;
	194	ret = si2157_cmd_execute(client, &cmd);
	195	if (ret)
	196	goto err;
	197
	198	dev_info(&client->dev, "firmware version: %c.%c.%d\n",
	199	cmd.args[6], cmd.args[7], cmd.args[8]);
	200
70f13ff0	201	dev->fw_loaded = true;
930a8730	202
4cbf6ed9	203	warm:
70f13ff0	204	dev->active = true;
930a8730	205	return 0;
4cbf6ed9	206
78dab40a	207	err_release_firmware:
dc89cfcf	208	release_firmware(fw);
e358c8a6	209	err:
8fe51725	210	dev_dbg(&client->dev, "failed=%d\n", ret);
b154121c	211	return ret;
930a8730 AP	212	}
	213
	214	static int si2157_sleep(struct dvb_frontend *fe)
	215	{
8fe51725 AP	216	struct i2c_client *client = fe->tuner_priv;
8fe51725 AP	217	struct si2157_dev *dev = i2c_get_clientdata(client);
a83d7d17 AP	218	int ret;
a83d7d17 AP	219	struct si2157_cmd cmd;
930a8730	220
8fe51725	221	dev_dbg(&client->dev, "\n");
930a8730	222
70f13ff0	223	dev->active = false;
930a8730	224
0e38233d OS	225	/* standby */
	226	memcpy(cmd.args, "\x16\x00", 2);
	227	cmd.wlen = 2;
	228	cmd.rlen = 1;
8fe51725	229	ret = si2157_cmd_execute(client, &cmd);
a83d7d17 AP	230	if (ret)
	231	goto err;
	232
930a8730	233	return 0;
a83d7d17	234	err:
8fe51725	235	dev_dbg(&client->dev, "failed=%d\n", ret);
a83d7d17	236	return ret;
930a8730 AP	237	}
	238
	239	static int si2157_set_params(struct dvb_frontend *fe)
	240	{
8fe51725 AP	241	struct i2c_client *client = fe->tuner_priv;
8fe51725 AP	242	struct si2157_dev *dev = i2c_get_clientdata(client);
930a8730 AP	243	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	244	int ret;
	245	struct si2157_cmd cmd;
a1dad50d	246	u8 bandwidth, delivery_system;
930a8730	247
8fe51725	248	dev_dbg(&client->dev,
67d0113a	249	"delivery_system=%d frequency=%u bandwidth_hz=%u\n",
8fe51725	250	c->delivery_system, c->frequency, c->bandwidth_hz);
930a8730	251
70f13ff0	252	if (!dev->active) {
930a8730 AP	253	ret = -EAGAIN;
	254	goto err;
	255	}
	256
a1dad50d OS	257	if (c->bandwidth_hz <= 6000000)
	258	bandwidth = 0x06;
	259	else if (c->bandwidth_hz <= 7000000)
	260	bandwidth = 0x07;
	261	else if (c->bandwidth_hz <= 8000000)
	262	bandwidth = 0x08;
	263	else
	264	bandwidth = 0x0f;
	265
	266	switch (c->delivery_system) {
5cd62db7 OS	267	case SYS_ATSC:
	268	delivery_system = 0x00;
	269	break;
0d1165fc OS	270	case SYS_DVBC_ANNEX_B:
	271	delivery_system = 0x10;
	272	break;
a1dad50d OS	273	case SYS_DVBT:
	274	case SYS_DVBT2: /* it seems DVB-T and DVB-T2 both are 0x20 here */
	275	delivery_system = 0x20;
	276	break;
	277	case SYS_DVBC_ANNEX_A:
	278	delivery_system = 0x30;
	279	break;
	280	default:
	281	ret = -EINVAL;
	282	goto err;
	283	}
	284
	285	memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6);
	286	cmd.args[4] = delivery_system \| bandwidth;
70f13ff0	287	if (dev->inversion)
05024efe	288	cmd.args[5] = 0x01;
a1dad50d	289	cmd.wlen = 6;
d87a5058	290	cmd.rlen = 4;
8fe51725	291	ret = si2157_cmd_execute(client, &cmd);
d87a5058 OS	292	if (ret)
	293	goto err;
	294
70f13ff0	295	if (dev->chiptype == SI2157_CHIPTYPE_SI2146)
073f3849 OS	296	memcpy(cmd.args, "\x14\x00\x02\x07\x00\x01", 6);
	297	else
	298	memcpy(cmd.args, "\x14\x00\x02\x07\x01\x00", 6);
d87a5058 OS	299	cmd.wlen = 6;
d87a5058 OS	300	cmd.rlen = 4;
8fe51725	301	ret = si2157_cmd_execute(client, &cmd);
a1dad50d OS	302	if (ret)
	303	goto err;
	304
930a8730	305	/* set frequency */
b154121c	306	memcpy(cmd.args, "\x41\x00\x00\x00\x00\x00\x00\x00", 8);
930a8730 AP	307	cmd.args[4] = (c->frequency >> 0) & 0xff;
	308	cmd.args[5] = (c->frequency >> 8) & 0xff;
	309	cmd.args[6] = (c->frequency >> 16) & 0xff;
	310	cmd.args[7] = (c->frequency >> 24) & 0xff;
e6b4380f AP	311	cmd.wlen = 8;
e6b4380f AP	312	cmd.rlen = 1;
8fe51725	313	ret = si2157_cmd_execute(client, &cmd);
930a8730 AP	314	if (ret)
	315	goto err;
	316
	317	return 0;
	318	err:
8fe51725	319	dev_dbg(&client->dev, "failed=%d\n", ret);
930a8730 AP	320	return ret;
	321	}
	322
1140540d MS	323	static int si2157_get_if_frequency(struct dvb_frontend fe, u32 frequency)
	324	{
	325	frequency = 5000000; / default value of property 0x0706 */
	326	return 0;
	327	}
	328
6cc8a35d	329	static const struct dvb_tuner_ops si2157_ops = {
930a8730	330	.info = {
17ad09f1	331	.name = "Silicon Labs Si2146/2147/2148/2157/2158",
ae4c8919	332	.frequency_min = 110000000,
930a8730 AP	333	.frequency_max = 862000000,
	334	},
	335
	336	.init = si2157_init,
	337	.sleep = si2157_sleep,
	338	.set_params = si2157_set_params,
1140540d	339	.get_if_frequency = si2157_get_if_frequency,
930a8730 AP	340	};
	341
	342	static int si2157_probe(struct i2c_client *client,
	343	const struct i2c_device_id *id)
	344	{
	345	struct si2157_config *cfg = client->dev.platform_data;
	346	struct dvb_frontend *fe = cfg->fe;
70f13ff0	347	struct si2157_dev *dev;
930a8730 AP	348	struct si2157_cmd cmd;
	349	int ret;
	350
70f13ff0 AP	351	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
70f13ff0 AP	352	if (!dev) {
930a8730	353	ret = -ENOMEM;
67d0113a	354	dev_err(&client->dev, "kzalloc() failed\n");
930a8730 AP	355	goto err;
	356	}
	357
8fe51725	358	i2c_set_clientdata(client, dev);
70f13ff0 AP	359	dev->fe = cfg->fe;
	360	dev->inversion = cfg->inversion;
	361	dev->fw_loaded = false;
	362	dev->chiptype = (u8)id->driver_data;
	363	mutex_init(&dev->i2c_mutex);
930a8730 AP	364
930a8730 AP	365	/* check if the tuner is there */
e6b4380f AP	366	cmd.wlen = 0;
e6b4380f AP	367	cmd.rlen = 1;
8fe51725	368	ret = si2157_cmd_execute(client, &cmd);
930a8730	369	if (ret)
e7f3f9f3	370	goto err_kfree;
930a8730	371
70f13ff0	372	memcpy(&fe->ops.tuner_ops, &si2157_ops, sizeof(struct dvb_tuner_ops));
8fe51725	373	fe->tuner_priv = client;
930a8730	374
8fe51725	375	dev_info(&client->dev, "Silicon Labs %s successfully attached\n",
70f13ff0	376	dev->chiptype == SI2157_CHIPTYPE_SI2146 ?
17ad09f1	377	"Si2146" : "Si2147/2148/2157/2158");
073f3849	378
930a8730	379	return 0;
e7f3f9f3 AP	380
	381	err_kfree:
	382	kfree(dev);
930a8730	383	err:
67d0113a	384	dev_dbg(&client->dev, "failed=%d\n", ret);
930a8730 AP	385	return ret;
	386	}
	387
	388	static int si2157_remove(struct i2c_client *client)
	389	{
70f13ff0 AP	390	struct si2157_dev *dev = i2c_get_clientdata(client);
70f13ff0 AP	391	struct dvb_frontend *fe = dev->fe;
930a8730	392
67d0113a	393	dev_dbg(&client->dev, "\n");
930a8730 AP	394
	395	memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
	396	fe->tuner_priv = NULL;
70f13ff0	397	kfree(dev);
930a8730 AP	398
	399	return 0;
	400	}
	401
c1292233 AP	402	static const struct i2c_device_id si2157_id_table[] = {
	403	{"si2157", SI2157_CHIPTYPE_SI2157},
	404	{"si2146", SI2157_CHIPTYPE_SI2146},
930a8730 AP	405	{}
930a8730 AP	406	};
c1292233	407	MODULE_DEVICE_TABLE(i2c, si2157_id_table);
930a8730 AP	408
	409	static struct i2c_driver si2157_driver = {
	410	.driver = {
	411	.owner = THIS_MODULE,
	412	.name = "si2157",
	413	},
	414	.probe = si2157_probe,
	415	.remove = si2157_remove,
c1292233	416	.id_table = si2157_id_table,
930a8730 AP	417	};
	418
	419	module_i2c_driver(si2157_driver);
	420
17ad09f1	421	MODULE_DESCRIPTION("Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner driver");
930a8730 AP	422	MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
930a8730 AP	423	MODULE_LICENSE("GPL");
bac53a2c	424	MODULE_FIRMWARE(SI2158_A20_FIRMWARE);