a3f90c75b8
Right now, satellite tuner drivers specify frequencies in kHz, while terrestrial/cable ones specify in Hz. That's confusing for developers. However, the main problem is that universal tuners capable of handling both satellite and non-satelite delivery systems are appearing. We end by needing to hack the drivers in order to support such hybrid tuners. So, convert everything to specify tuner frequencies in Hz. Plese notice that a similar patch is also needed for frontends. Tested-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com> Acked-by: Michael Büsch <m@bues.ch> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
292 lines
6.6 KiB
C
292 lines
6.6 KiB
C
/*
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* NXP TDA18212HN silicon tuner driver
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*
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* Copyright (C) 2011 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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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "tda18212.h"
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#include <linux/regmap.h>
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struct tda18212_dev {
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struct tda18212_config cfg;
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struct i2c_client *client;
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struct regmap *regmap;
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u32 if_frequency;
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};
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static int tda18212_set_params(struct dvb_frontend *fe)
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{
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struct tda18212_dev *dev = fe->tuner_priv;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret, i;
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u32 if_khz;
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u8 buf[9];
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#define DVBT_6 0
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#define DVBT_7 1
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#define DVBT_8 2
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#define DVBT2_6 3
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#define DVBT2_7 4
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#define DVBT2_8 5
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#define DVBC_6 6
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#define DVBC_8 7
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#define ATSC_VSB 8
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#define ATSC_QAM 9
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static const u8 bw_params[][3] = {
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/* reg: 0f 13 23 */
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[DVBT_6] = { 0xb3, 0x20, 0x03 },
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[DVBT_7] = { 0xb3, 0x31, 0x01 },
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[DVBT_8] = { 0xb3, 0x22, 0x01 },
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[DVBT2_6] = { 0xbc, 0x20, 0x03 },
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[DVBT2_7] = { 0xbc, 0x72, 0x03 },
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[DVBT2_8] = { 0xbc, 0x22, 0x01 },
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[DVBC_6] = { 0x92, 0x50, 0x03 },
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[DVBC_8] = { 0x92, 0x53, 0x03 },
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[ATSC_VSB] = { 0x7d, 0x20, 0x63 },
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[ATSC_QAM] = { 0x7d, 0x20, 0x63 },
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};
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dev_dbg(&dev->client->dev,
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"delivery_system=%d frequency=%d bandwidth_hz=%d\n",
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c->delivery_system, c->frequency,
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c->bandwidth_hz);
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
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switch (c->delivery_system) {
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case SYS_ATSC:
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if_khz = dev->cfg.if_atsc_vsb;
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i = ATSC_VSB;
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break;
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case SYS_DVBC_ANNEX_B:
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if_khz = dev->cfg.if_atsc_qam;
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i = ATSC_QAM;
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break;
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case SYS_DVBT:
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switch (c->bandwidth_hz) {
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case 6000000:
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if_khz = dev->cfg.if_dvbt_6;
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i = DVBT_6;
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break;
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case 7000000:
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if_khz = dev->cfg.if_dvbt_7;
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i = DVBT_7;
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break;
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case 8000000:
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if_khz = dev->cfg.if_dvbt_8;
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i = DVBT_8;
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break;
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default:
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ret = -EINVAL;
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goto error;
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}
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break;
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case SYS_DVBT2:
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switch (c->bandwidth_hz) {
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case 6000000:
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if_khz = dev->cfg.if_dvbt2_6;
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i = DVBT2_6;
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break;
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case 7000000:
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if_khz = dev->cfg.if_dvbt2_7;
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i = DVBT2_7;
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break;
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case 8000000:
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if_khz = dev->cfg.if_dvbt2_8;
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i = DVBT2_8;
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break;
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default:
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ret = -EINVAL;
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goto error;
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}
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break;
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case SYS_DVBC_ANNEX_A:
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case SYS_DVBC_ANNEX_C:
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if_khz = dev->cfg.if_dvbc;
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i = DVBC_8;
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break;
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default:
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ret = -EINVAL;
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goto error;
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}
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ret = regmap_write(dev->regmap, 0x23, bw_params[i][2]);
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if (ret)
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goto error;
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ret = regmap_write(dev->regmap, 0x06, 0x00);
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if (ret)
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goto error;
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ret = regmap_write(dev->regmap, 0x0f, bw_params[i][0]);
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if (ret)
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goto error;
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buf[0] = 0x02;
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buf[1] = bw_params[i][1];
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buf[2] = 0x03; /* default value */
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buf[3] = DIV_ROUND_CLOSEST(if_khz, 50);
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buf[4] = ((c->frequency / 1000) >> 16) & 0xff;
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buf[5] = ((c->frequency / 1000) >> 8) & 0xff;
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buf[6] = ((c->frequency / 1000) >> 0) & 0xff;
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buf[7] = 0xc1;
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buf[8] = 0x01;
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ret = regmap_bulk_write(dev->regmap, 0x12, buf, sizeof(buf));
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if (ret)
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goto error;
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/* actual IF rounded as it is on register */
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dev->if_frequency = buf[3] * 50 * 1000;
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exit:
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
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return ret;
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error:
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dev_dbg(&dev->client->dev, "failed=%d\n", ret);
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goto exit;
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}
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static int tda18212_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
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{
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struct tda18212_dev *dev = fe->tuner_priv;
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*frequency = dev->if_frequency;
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return 0;
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}
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static const struct dvb_tuner_ops tda18212_tuner_ops = {
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.info = {
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.name = "NXP TDA18212",
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.frequency_min_hz = 48 * MHz,
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.frequency_max_hz = 864 * MHz,
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.frequency_step_hz = 1 * kHz,
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},
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.set_params = tda18212_set_params,
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.get_if_frequency = tda18212_get_if_frequency,
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};
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static int tda18212_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct tda18212_config *cfg = client->dev.platform_data;
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struct dvb_frontend *fe = cfg->fe;
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struct tda18212_dev *dev;
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int ret;
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unsigned int chip_id;
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char *version;
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static const struct regmap_config regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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};
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (dev == NULL) {
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ret = -ENOMEM;
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dev_err(&client->dev, "kzalloc() failed\n");
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goto err;
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}
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memcpy(&dev->cfg, cfg, sizeof(struct tda18212_config));
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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;
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}
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/* check if the tuner is there */
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
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ret = regmap_read(dev->regmap, 0x00, &chip_id);
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dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id);
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
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if (ret)
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goto err;
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switch (chip_id) {
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case 0xc7:
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version = "M"; /* master */
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break;
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case 0x47:
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version = "S"; /* slave */
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break;
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default:
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ret = -ENODEV;
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goto err;
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}
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dev_info(&dev->client->dev,
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"NXP TDA18212HN/%s successfully identified\n", version);
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fe->tuner_priv = dev;
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memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
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sizeof(struct dvb_tuner_ops));
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i2c_set_clientdata(client, dev);
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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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kfree(dev);
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return ret;
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}
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static int tda18212_remove(struct i2c_client *client)
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{
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struct tda18212_dev *dev = i2c_get_clientdata(client);
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struct dvb_frontend *fe = dev->cfg.fe;
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dev_dbg(&client->dev, "\n");
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memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
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fe->tuner_priv = NULL;
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kfree(dev);
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return 0;
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}
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static const struct i2c_device_id tda18212_id[] = {
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{"tda18212", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, tda18212_id);
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static struct i2c_driver tda18212_driver = {
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.driver = {
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.name = "tda18212",
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},
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.probe = tda18212_probe,
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.remove = tda18212_remove,
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.id_table = tda18212_id,
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};
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module_i2c_driver(tda18212_driver);
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MODULE_DESCRIPTION("NXP TDA18212HN 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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