2012-09-09 09:07:24 +08:00
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/*
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* FCI FC2580 silicon tuner driver
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*
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* Copyright (C) 2012 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 "fc2580_priv.h"
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2013-11-02 17:07:42 +08:00
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/* Max transfer size done by I2C transfer functions */
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#define MAX_XFER_SIZE 64
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2012-09-09 09:07:24 +08:00
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/*
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* TODO:
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* I2C write and read works only for one single register. Multiple registers
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* could not be accessed using normal register address auto-increment.
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* There could be (very likely) register to change that behavior....
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*
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* Due to that limitation functions:
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* fc2580_wr_regs()
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* fc2580_rd_regs()
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* could not be used for accessing more than one register at once.
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*/
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/* write multiple registers */
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2015-04-15 23:35:47 +08:00
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static int fc2580_wr_regs(struct fc2580_dev *dev, u8 reg, u8 *val, int len)
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2012-09-09 09:07:24 +08:00
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{
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2015-04-15 23:35:47 +08:00
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struct i2c_client *client = dev->client;
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2012-09-09 09:07:24 +08:00
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int ret;
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2013-11-02 17:07:42 +08:00
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u8 buf[MAX_XFER_SIZE];
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2012-09-09 09:07:24 +08:00
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struct i2c_msg msg[1] = {
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{
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2015-04-15 23:35:47 +08:00
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.addr = dev->i2c_addr,
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2012-09-09 09:07:24 +08:00
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.flags = 0,
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2013-11-02 17:07:42 +08:00
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.len = 1 + len,
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2012-09-09 09:07:24 +08:00
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.buf = buf,
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}
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};
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2013-11-02 17:07:42 +08:00
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if (1 + len > sizeof(buf)) {
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2015-04-15 23:35:47 +08:00
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dev_warn(&client->dev,
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2013-11-02 17:07:42 +08:00
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"%s: i2c wr reg=%04x: len=%d is too big!\n",
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KBUILD_MODNAME, reg, len);
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return -EINVAL;
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}
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2012-09-09 09:07:24 +08:00
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buf[0] = reg;
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memcpy(&buf[1], val, len);
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2015-04-15 23:35:47 +08:00
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ret = i2c_transfer(dev->i2c, msg, 1);
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2012-09-09 09:07:24 +08:00
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if (ret == 1) {
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ret = 0;
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} else {
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2015-04-15 23:35:47 +08:00
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dev_warn(&dev->i2c->dev, "%s: i2c wr failed=%d reg=%02x len=%d\n",
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KBUILD_MODNAME, ret, reg, len);
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2012-09-09 09:07:24 +08:00
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ret = -EREMOTEIO;
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}
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return ret;
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}
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/* read multiple registers */
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2015-04-15 23:35:47 +08:00
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static int fc2580_rd_regs(struct fc2580_dev *dev, u8 reg, u8 *val, int len)
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2012-09-09 09:07:24 +08:00
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{
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2015-04-15 23:35:47 +08:00
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struct i2c_client *client = dev->client;
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2012-09-09 09:07:24 +08:00
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int ret;
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2013-11-02 17:07:42 +08:00
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u8 buf[MAX_XFER_SIZE];
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2012-09-09 09:07:24 +08:00
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struct i2c_msg msg[2] = {
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{
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2015-04-15 23:35:47 +08:00
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.addr = dev->i2c_addr,
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2012-09-09 09:07:24 +08:00
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.flags = 0,
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.len = 1,
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.buf = ®,
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}, {
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2015-04-15 23:35:47 +08:00
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.addr = dev->i2c_addr,
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2012-09-09 09:07:24 +08:00
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.flags = I2C_M_RD,
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2013-11-02 17:07:42 +08:00
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.len = len,
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2012-09-09 09:07:24 +08:00
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.buf = buf,
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}
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};
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2013-11-02 17:07:42 +08:00
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if (len > sizeof(buf)) {
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2015-04-15 23:35:47 +08:00
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dev_warn(&client->dev,
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2013-11-02 17:07:42 +08:00
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"%s: i2c rd reg=%04x: len=%d is too big!\n",
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KBUILD_MODNAME, reg, len);
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return -EINVAL;
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}
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2015-04-15 23:35:47 +08:00
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ret = i2c_transfer(dev->i2c, msg, 2);
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2012-09-09 09:07:24 +08:00
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if (ret == 2) {
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memcpy(val, buf, len);
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ret = 0;
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} else {
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2015-04-15 23:35:47 +08:00
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dev_warn(&client->dev, "%s: i2c rd failed=%d reg=%02x len=%d\n",
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KBUILD_MODNAME, ret, reg, len);
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2012-09-09 09:07:24 +08:00
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ret = -EREMOTEIO;
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}
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return ret;
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}
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/* write single register */
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2015-04-15 23:35:47 +08:00
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static int fc2580_wr_reg(struct fc2580_dev *dev, u8 reg, u8 val)
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2012-09-09 09:07:24 +08:00
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{
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2015-04-15 23:35:47 +08:00
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return fc2580_wr_regs(dev, reg, &val, 1);
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2012-09-09 09:07:24 +08:00
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}
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/* read single register */
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2015-04-15 23:35:47 +08:00
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static int fc2580_rd_reg(struct fc2580_dev *dev, u8 reg, u8 *val)
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2012-09-09 09:07:24 +08:00
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{
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2015-04-15 23:35:47 +08:00
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return fc2580_rd_regs(dev, reg, val, 1);
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2012-09-09 09:07:24 +08:00
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}
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2012-11-07 03:48:41 +08:00
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/* write single register conditionally only when value differs from 0xff
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* XXX: This is special routine meant only for writing fc2580_freq_regs_lut[]
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* values. Do not use for the other purposes. */
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2015-04-15 23:35:47 +08:00
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static int fc2580_wr_reg_ff(struct fc2580_dev *dev, u8 reg, u8 val)
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2012-11-07 03:48:41 +08:00
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{
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if (val == 0xff)
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return 0;
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else
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2015-04-15 23:35:47 +08:00
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return fc2580_wr_regs(dev, reg, &val, 1);
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2012-11-07 03:48:41 +08:00
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}
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2015-04-15 23:10:54 +08:00
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2012-09-09 09:07:24 +08:00
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static int fc2580_set_params(struct dvb_frontend *fe)
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{
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2015-04-15 23:35:47 +08:00
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struct fc2580_dev *dev = fe->tuner_priv;
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struct i2c_client *client = dev->client;
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2012-09-09 09:07:24 +08:00
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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2015-04-15 23:10:54 +08:00
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int ret, i;
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unsigned int uitmp, div_ref, div_ref_val, div_n, k, k_cw, div_out;
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2012-09-09 09:07:24 +08:00
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u64 f_vco;
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2015-04-15 23:10:54 +08:00
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u8 u8tmp, synth_config;
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unsigned long timeout;
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2012-09-09 09:07:24 +08:00
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2015-04-15 23:10:54 +08:00
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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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2012-09-09 09:07:24 +08:00
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2015-04-15 23:10:54 +08:00
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/*
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* Fractional-N synthesizer
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*
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* +---------------------------------------+
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* v |
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* Fref +----+ +----+ +-------+ +----+ +------+ +---+
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* ------> | /R | --> | PD | --> | VCO | ------> | /2 | --> | /N.F | <-- | K |
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* +----+ +----+ +-------+ +----+ +------+ +---+
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* |
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* |
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* v
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* +-------+ Fout
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* | /Rout | ------>
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* +-------+
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*/
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2012-09-09 09:07:24 +08:00
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for (i = 0; i < ARRAY_SIZE(fc2580_pll_lut); i++) {
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if (c->frequency <= fc2580_pll_lut[i].freq)
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break;
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}
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2015-04-15 23:10:54 +08:00
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if (i == ARRAY_SIZE(fc2580_pll_lut)) {
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ret = -EINVAL;
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2012-09-09 09:07:24 +08:00
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goto err;
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2015-04-15 23:10:54 +08:00
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}
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2012-09-09 09:07:24 +08:00
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2015-04-15 23:10:54 +08:00
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#define DIV_PRE_N 2
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2015-04-15 23:35:47 +08:00
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#define F_REF dev->clk
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2015-04-15 23:10:54 +08:00
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div_out = fc2580_pll_lut[i].div_out;
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f_vco = (u64) c->frequency * div_out;
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synth_config = fc2580_pll_lut[i].band;
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if (f_vco < 2600000000ULL)
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synth_config |= 0x06;
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2012-09-09 09:07:24 +08:00
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else
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2015-04-15 23:10:54 +08:00
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synth_config |= 0x0e;
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/* select reference divider R (keep PLL div N in valid range) */
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#define DIV_N_MIN 76
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if (f_vco >= div_u64((u64) DIV_PRE_N * DIV_N_MIN * F_REF, 1)) {
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div_ref = 1;
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div_ref_val = 0x00;
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} else if (f_vco >= div_u64((u64) DIV_PRE_N * DIV_N_MIN * F_REF, 2)) {
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div_ref = 2;
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div_ref_val = 0x10;
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2012-09-09 09:07:24 +08:00
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} else {
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2015-04-15 23:10:54 +08:00
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div_ref = 4;
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div_ref_val = 0x20;
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2012-09-09 09:07:24 +08:00
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}
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2015-04-15 23:10:54 +08:00
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/* calculate PLL integer and fractional control word */
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uitmp = DIV_PRE_N * F_REF / div_ref;
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div_n = div_u64_rem(f_vco, uitmp, &k);
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k_cw = div_u64((u64) k * 0x100000, uitmp);
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dev_dbg(&client->dev,
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"frequency=%u f_vco=%llu F_REF=%u div_ref=%u div_n=%u k=%u div_out=%u k_cw=%0x\n",
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c->frequency, f_vco, F_REF, div_ref, div_n, k, div_out, k_cw);
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2012-09-09 09:07:24 +08:00
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2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg(dev, 0x02, synth_config);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg(dev, 0x18, div_ref_val << 0 | k_cw >> 16);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg(dev, 0x1a, (k_cw >> 8) & 0xff);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg(dev, 0x1b, (k_cw >> 0) & 0xff);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg(dev, 0x1c, div_n);
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2015-04-15 23:10:54 +08:00
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if (ret < 0)
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goto err;
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2012-09-09 09:07:24 +08:00
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/* registers */
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for (i = 0; i < ARRAY_SIZE(fc2580_freq_regs_lut); i++) {
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if (c->frequency <= fc2580_freq_regs_lut[i].freq)
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break;
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}
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2015-04-15 23:10:54 +08:00
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if (i == ARRAY_SIZE(fc2580_freq_regs_lut)) {
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ret = -EINVAL;
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2012-09-09 09:07:24 +08:00
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goto err;
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2015-04-15 23:10:54 +08:00
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}
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2012-09-09 09:07:24 +08:00
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2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg_ff(dev, 0x25, fc2580_freq_regs_lut[i].r25_val);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg_ff(dev, 0x27, fc2580_freq_regs_lut[i].r27_val);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg_ff(dev, 0x28, fc2580_freq_regs_lut[i].r28_val);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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|
2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg_ff(dev, 0x29, fc2580_freq_regs_lut[i].r29_val);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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|
2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg_ff(dev, 0x2b, fc2580_freq_regs_lut[i].r2b_val);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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|
2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg_ff(dev, 0x2c, fc2580_freq_regs_lut[i].r2c_val);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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|
2015-04-15 23:35:47 +08:00
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ret = fc2580_wr_reg_ff(dev, 0x2d, fc2580_freq_regs_lut[i].r2d_val);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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|
2015-04-15 23:35:47 +08:00
|
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ret = fc2580_wr_reg_ff(dev, 0x30, fc2580_freq_regs_lut[i].r30_val);
|
2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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|
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|
2015-04-15 23:35:47 +08:00
|
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ret = fc2580_wr_reg_ff(dev, 0x44, fc2580_freq_regs_lut[i].r44_val);
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2012-09-09 09:07:24 +08:00
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if (ret < 0)
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goto err;
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|
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|
2015-04-15 23:35:47 +08:00
|
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ret = fc2580_wr_reg_ff(dev, 0x50, fc2580_freq_regs_lut[i].r50_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x53, fc2580_freq_regs_lut[i].r53_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x5f, fc2580_freq_regs_lut[i].r5f_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x61, fc2580_freq_regs_lut[i].r61_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x62, fc2580_freq_regs_lut[i].r62_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x63, fc2580_freq_regs_lut[i].r63_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x67, fc2580_freq_regs_lut[i].r67_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x68, fc2580_freq_regs_lut[i].r68_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x69, fc2580_freq_regs_lut[i].r69_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x6a, fc2580_freq_regs_lut[i].r6a_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x6b, fc2580_freq_regs_lut[i].r6b_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x6c, fc2580_freq_regs_lut[i].r6c_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x6d, fc2580_freq_regs_lut[i].r6d_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x6e, fc2580_freq_regs_lut[i].r6e_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg_ff(dev, 0x6f, fc2580_freq_regs_lut[i].r6f_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
/* IF filters */
|
|
|
|
for (i = 0; i < ARRAY_SIZE(fc2580_if_filter_lut); i++) {
|
|
|
|
if (c->bandwidth_hz <= fc2580_if_filter_lut[i].freq)
|
|
|
|
break;
|
|
|
|
}
|
2015-04-15 23:10:54 +08:00
|
|
|
if (i == ARRAY_SIZE(fc2580_if_filter_lut)) {
|
|
|
|
ret = -EINVAL;
|
2012-09-09 09:07:24 +08:00
|
|
|
goto err;
|
2015-04-15 23:10:54 +08:00
|
|
|
}
|
2012-09-09 09:07:24 +08:00
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg(dev, 0x36, fc2580_if_filter_lut[i].r36_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
u8tmp = div_u64((u64) dev->clk * fc2580_if_filter_lut[i].mul,
|
2015-04-15 23:10:54 +08:00
|
|
|
1000000000);
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg(dev, 0x37, u8tmp);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg(dev, 0x39, fc2580_if_filter_lut[i].r39_val);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:10:54 +08:00
|
|
|
timeout = jiffies + msecs_to_jiffies(30);
|
|
|
|
for (uitmp = ~0xc0; !time_after(jiffies, timeout) && uitmp != 0xc0;) {
|
|
|
|
/* trigger filter */
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg(dev, 0x2e, 0x09);
|
2015-04-15 23:10:54 +08:00
|
|
|
if (ret)
|
2012-09-09 09:07:24 +08:00
|
|
|
goto err;
|
|
|
|
|
2015-04-15 23:10:54 +08:00
|
|
|
/* locked when [7:6] are set (val: d7 6MHz, d5 7MHz, cd 8MHz) */
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_rd_reg(dev, 0x2f, &u8tmp);
|
2015-04-15 23:10:54 +08:00
|
|
|
if (ret)
|
2012-09-09 09:07:24 +08:00
|
|
|
goto err;
|
2015-04-15 23:10:54 +08:00
|
|
|
uitmp = u8tmp & 0xc0;
|
2012-09-09 09:07:24 +08:00
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg(dev, 0x2e, 0x01);
|
2015-04-15 23:10:54 +08:00
|
|
|
if (ret)
|
2012-09-09 09:07:24 +08:00
|
|
|
goto err;
|
|
|
|
}
|
2015-04-15 23:10:54 +08:00
|
|
|
if (uitmp != 0xc0)
|
|
|
|
dev_dbg(&client->dev, "filter did not lock %02x\n", uitmp);
|
2012-09-09 09:07:24 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
err:
|
2015-04-15 23:10:54 +08:00
|
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
2012-09-09 09:07:24 +08:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int fc2580_init(struct dvb_frontend *fe)
|
|
|
|
{
|
2015-04-15 23:35:47 +08:00
|
|
|
struct fc2580_dev *dev = fe->tuner_priv;
|
|
|
|
struct i2c_client *client = dev->client;
|
2012-09-09 09:07:24 +08:00
|
|
|
int ret, i;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
dev_dbg(&client->dev, "\n");
|
2012-09-09 09:07:24 +08:00
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(fc2580_init_reg_vals); i++) {
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg(dev, fc2580_init_reg_vals[i].reg,
|
2012-09-09 09:07:24 +08:00
|
|
|
fc2580_init_reg_vals[i].val);
|
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
err:
|
2015-04-15 23:35:47 +08:00
|
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
2012-09-09 09:07:24 +08:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int fc2580_sleep(struct dvb_frontend *fe)
|
|
|
|
{
|
2015-04-15 23:35:47 +08:00
|
|
|
struct fc2580_dev *dev = fe->tuner_priv;
|
|
|
|
struct i2c_client *client = dev->client;
|
2012-09-09 09:07:24 +08:00
|
|
|
int ret;
|
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
dev_dbg(&client->dev, "\n");
|
2012-09-09 09:07:24 +08:00
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
ret = fc2580_wr_reg(dev, 0x02, 0x0a);
|
2012-09-09 09:07:24 +08:00
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
err:
|
2015-04-15 23:35:47 +08:00
|
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
2012-09-09 09:07:24 +08:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int fc2580_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
|
|
|
|
{
|
2015-04-15 23:35:47 +08:00
|
|
|
struct fc2580_dev *dev = fe->tuner_priv;
|
|
|
|
struct i2c_client *client = dev->client;
|
2012-09-09 09:07:24 +08:00
|
|
|
|
2015-04-15 23:35:47 +08:00
|
|
|
dev_dbg(&client->dev, "\n");
|
2012-09-09 09:07:24 +08:00
|
|
|
|
|
|
|
*frequency = 0; /* Zero-IF */
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct dvb_tuner_ops fc2580_tuner_ops = {
|
|
|
|
.info = {
|
|
|
|
.name = "FCI FC2580",
|
|
|
|
.frequency_min = 174000000,
|
|
|
|
.frequency_max = 862000000,
|
|
|
|
},
|
|
|
|
|
|
|
|
.init = fc2580_init,
|
|
|
|
.sleep = fc2580_sleep,
|
|
|
|
.set_params = fc2580_set_params,
|
|
|
|
|
|
|
|
.get_if_frequency = fc2580_get_if_frequency,
|
|
|
|
};
|
|
|
|
|
2015-04-15 06:52:16 +08:00
|
|
|
static int fc2580_probe(struct i2c_client *client,
|
|
|
|
const struct i2c_device_id *id)
|
|
|
|
{
|
2015-04-15 23:35:47 +08:00
|
|
|
struct fc2580_dev *dev;
|
2015-04-15 06:52:16 +08:00
|
|
|
struct fc2580_platform_data *pdata = client->dev.platform_data;
|
|
|
|
struct dvb_frontend *fe = pdata->dvb_frontend;
|
|
|
|
int ret;
|
|
|
|
u8 chip_id;
|
|
|
|
|
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
|
|
if (!dev) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (pdata->clk)
|
|
|
|
dev->clk = pdata->clk;
|
|
|
|
else
|
|
|
|
dev->clk = 16384000; /* internal clock */
|
|
|
|
dev->client = client;
|
|
|
|
dev->i2c = client->adapter;
|
|
|
|
dev->i2c_addr = client->addr;
|
|
|
|
|
|
|
|
/* check if the tuner is there */
|
|
|
|
ret = fc2580_rd_reg(dev, 0x01, &chip_id);
|
|
|
|
if (ret < 0)
|
|
|
|
goto err_kfree;
|
|
|
|
|
|
|
|
dev_dbg(&client->dev, "chip_id=%02x\n", chip_id);
|
|
|
|
|
|
|
|
switch (chip_id) {
|
|
|
|
case 0x56:
|
|
|
|
case 0x5a:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
goto err_kfree;
|
|
|
|
}
|
|
|
|
|
|
|
|
fe->tuner_priv = dev;
|
|
|
|
memcpy(&fe->ops.tuner_ops, &fc2580_tuner_ops,
|
|
|
|
sizeof(struct dvb_tuner_ops));
|
|
|
|
i2c_set_clientdata(client, dev);
|
|
|
|
|
|
|
|
dev_info(&client->dev, "FCI FC2580 successfully identified\n");
|
|
|
|
return 0;
|
|
|
|
err_kfree:
|
|
|
|
kfree(dev);
|
|
|
|
err:
|
|
|
|
dev_dbg(&client->dev, "failed=%d\n", ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int fc2580_remove(struct i2c_client *client)
|
|
|
|
{
|
2015-04-15 23:35:47 +08:00
|
|
|
struct fc2580_dev *dev = i2c_get_clientdata(client);
|
2015-04-15 06:52:16 +08:00
|
|
|
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
|
|
|
|
kfree(dev);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct i2c_device_id fc2580_id_table[] = {
|
|
|
|
{"fc2580", 0},
|
|
|
|
{}
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, fc2580_id_table);
|
|
|
|
|
|
|
|
static struct i2c_driver fc2580_driver = {
|
|
|
|
.driver = {
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.name = "fc2580",
|
|
|
|
.suppress_bind_attrs = true,
|
|
|
|
},
|
|
|
|
.probe = fc2580_probe,
|
|
|
|
.remove = fc2580_remove,
|
|
|
|
.id_table = fc2580_id_table,
|
|
|
|
};
|
|
|
|
|
|
|
|
module_i2c_driver(fc2580_driver);
|
|
|
|
|
2012-09-09 09:07:24 +08:00
|
|
|
MODULE_DESCRIPTION("FCI FC2580 silicon tuner driver");
|
|
|
|
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
|
|
|
|
MODULE_LICENSE("GPL");
|