forked from Minki/linux
dd219a87e4
Use regmap for I2C register access. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
291 lines
6.1 KiB
C
291 lines
6.1 KiB
C
/*
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* Infineon TUA9001 silicon tuner driver
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*
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* Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "tua9001_priv.h"
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static int tua9001_init(struct dvb_frontend *fe)
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{
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struct tua9001_dev *dev = fe->tuner_priv;
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struct i2c_client *client = dev->client;
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int ret, i;
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static const struct tua9001_reg_val data[] = {
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{0x1e, 0x6512},
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{0x25, 0xb888},
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{0x39, 0x5460},
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{0x3b, 0x00c0},
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{0x3a, 0xf000},
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{0x08, 0x0000},
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{0x32, 0x0030},
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{0x41, 0x703a},
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{0x40, 0x1c78},
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{0x2c, 0x1c00},
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{0x36, 0xc013},
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{0x37, 0x6f18},
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{0x27, 0x0008},
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{0x2a, 0x0001},
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{0x34, 0x0a40},
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};
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dev_dbg(&client->dev, "\n");
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if (fe->callback) {
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ret = fe->callback(client->adapter,
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DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RESETN, 0);
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if (ret)
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goto err;
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}
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for (i = 0; i < ARRAY_SIZE(data); i++) {
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ret = regmap_write(dev->regmap, data[i].reg, data[i].val);
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if (ret)
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goto err;
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}
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return 0;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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}
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static int tua9001_sleep(struct dvb_frontend *fe)
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{
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struct tua9001_dev *dev = fe->tuner_priv;
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struct i2c_client *client = dev->client;
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int ret;
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dev_dbg(&client->dev, "\n");
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if (fe->callback) {
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ret = fe->callback(client->adapter,
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DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RESETN, 1);
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if (ret)
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goto err;
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}
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return 0;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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}
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static int tua9001_set_params(struct dvb_frontend *fe)
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{
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struct tua9001_dev *dev = fe->tuner_priv;
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struct i2c_client *client = dev->client;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret, i;
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u16 val;
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u32 frequency;
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struct tua9001_reg_val data[2];
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dev_dbg(&client->dev,
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"delivery_system=%u frequency=%u bandwidth_hz=%u\n",
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c->delivery_system, c->frequency, c->bandwidth_hz);
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switch (c->delivery_system) {
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case SYS_DVBT:
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switch (c->bandwidth_hz) {
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case 8000000:
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val = 0x0000;
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break;
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case 7000000:
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val = 0x1000;
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break;
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case 6000000:
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val = 0x2000;
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break;
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case 5000000:
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val = 0x3000;
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break;
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default:
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ret = -EINVAL;
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goto err;
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}
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break;
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default:
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ret = -EINVAL;
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goto err;
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}
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data[0].reg = 0x04;
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data[0].val = val;
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frequency = (c->frequency - 150000000);
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frequency /= 100;
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frequency *= 48;
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frequency /= 10000;
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data[1].reg = 0x1f;
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data[1].val = frequency;
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if (fe->callback) {
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ret = fe->callback(client->adapter,
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DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RXEN, 0);
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if (ret)
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goto err;
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}
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for (i = 0; i < ARRAY_SIZE(data); i++) {
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ret = regmap_write(dev->regmap, data[i].reg, data[i].val);
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if (ret)
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goto err;
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}
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if (fe->callback) {
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ret = fe->callback(client->adapter,
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DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RXEN, 1);
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if (ret)
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goto err;
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}
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return 0;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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}
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static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
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{
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struct tua9001_dev *dev = fe->tuner_priv;
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struct i2c_client *client = dev->client;
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dev_dbg(&client->dev, "\n");
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*frequency = 0; /* Zero-IF */
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return 0;
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}
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static const struct dvb_tuner_ops tua9001_tuner_ops = {
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.info = {
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.name = "Infineon TUA9001",
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.frequency_min = 170000000,
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.frequency_max = 862000000,
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},
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.init = tua9001_init,
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.sleep = tua9001_sleep,
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.set_params = tua9001_set_params,
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.get_if_frequency = tua9001_get_if_frequency,
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};
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static int tua9001_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct tua9001_dev *dev;
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struct tua9001_platform_data *pdata = client->dev.platform_data;
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struct dvb_frontend *fe = pdata->dvb_frontend;
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int ret;
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static const struct regmap_config regmap_config = {
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.reg_bits = 8,
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.val_bits = 16,
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};
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev) {
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ret = -ENOMEM;
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goto err;
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}
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dev->fe = pdata->dvb_frontend;
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dev->client = client;
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dev->regmap = devm_regmap_init_i2c(client, ®map_config);
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if (IS_ERR(dev->regmap)) {
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ret = PTR_ERR(dev->regmap);
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goto err_kfree;
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}
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if (fe->callback) {
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ret = fe->callback(client->adapter,
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DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_CEN, 1);
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if (ret)
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goto err_kfree;
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ret = fe->callback(client->adapter,
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DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RXEN, 0);
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if (ret)
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goto err_kfree;
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ret = fe->callback(client->adapter,
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DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RESETN, 1);
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if (ret)
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goto err_kfree;
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}
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fe->tuner_priv = dev;
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memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
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sizeof(struct dvb_tuner_ops));
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i2c_set_clientdata(client, dev);
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dev_info(&client->dev, "Infineon TUA9001 successfully attached\n");
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return 0;
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err_kfree:
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kfree(dev);
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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}
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static int tua9001_remove(struct i2c_client *client)
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{
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struct tua9001_dev *dev = i2c_get_clientdata(client);
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struct dvb_frontend *fe = dev->fe;
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int ret;
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dev_dbg(&client->dev, "\n");
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if (fe->callback) {
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ret = fe->callback(client->adapter,
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DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_CEN, 0);
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if (ret)
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goto err_kfree;
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}
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kfree(dev);
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return 0;
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err_kfree:
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kfree(dev);
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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}
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static const struct i2c_device_id tua9001_id_table[] = {
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{"tua9001", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, tua9001_id_table);
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static struct i2c_driver tua9001_driver = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "tua9001",
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.suppress_bind_attrs = true,
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},
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.probe = tua9001_probe,
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.remove = tua9001_remove,
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.id_table = tua9001_id_table,
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};
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module_i2c_driver(tua9001_driver);
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MODULE_DESCRIPTION("Infineon TUA9001 silicon tuner driver");
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MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
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MODULE_LICENSE("GPL");
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