295 lines
6.4 KiB
C
295 lines
6.4 KiB
C
/*
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* Infineon TUA 9001 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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* 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 "tua9001.h"
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#include "tua9001_priv.h"
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/* write register */
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static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
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{
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int ret;
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u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff };
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struct i2c_msg msg[1] = {
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{
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.addr = priv->cfg->i2c_addr,
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.flags = 0,
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.len = sizeof(buf),
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.buf = buf,
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}
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};
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ret = i2c_transfer(priv->i2c, msg, 1);
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if (ret == 1) {
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ret = 0;
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} else {
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dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n",
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KBUILD_MODNAME, ret, reg);
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ret = -EREMOTEIO;
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}
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return ret;
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}
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static int tua9001_release(struct dvb_frontend *fe)
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{
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struct tua9001_priv *priv = fe->tuner_priv;
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int ret = 0;
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dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
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if (fe->callback)
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ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_CEN, 0);
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kfree(fe->tuner_priv);
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fe->tuner_priv = NULL;
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return ret;
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}
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static int tua9001_init(struct dvb_frontend *fe)
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{
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struct tua9001_priv *priv = fe->tuner_priv;
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int ret = 0;
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u8 i;
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struct 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(&priv->i2c->dev, "%s:\n", __func__);
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if (fe->callback) {
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ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RESETN, 0);
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if (ret < 0)
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goto err;
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}
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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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for (i = 0; i < ARRAY_SIZE(data); i++) {
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ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
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if (ret < 0)
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goto err_i2c_gate_ctrl;
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}
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err_i2c_gate_ctrl:
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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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err:
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if (ret < 0)
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dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, 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_priv *priv = fe->tuner_priv;
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int ret = 0;
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dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
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if (fe->callback)
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ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RESETN, 1);
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if (ret < 0)
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dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, 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_priv *priv = fe->tuner_priv;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret = 0, i;
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u16 val;
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u32 frequency;
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struct reg_val data[2];
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dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
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"bandwidth_hz=%d\n", __func__,
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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->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
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if (fe->callback) {
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ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RXEN, 0);
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if (ret < 0)
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goto err_i2c_gate_ctrl;
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}
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for (i = 0; i < ARRAY_SIZE(data); i++) {
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ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
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if (ret < 0)
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goto err_i2c_gate_ctrl;
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}
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if (fe->callback) {
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ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RXEN, 1);
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if (ret < 0)
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goto err_i2c_gate_ctrl;
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}
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err_i2c_gate_ctrl:
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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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err:
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if (ret < 0)
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dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, 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_priv *priv = fe->tuner_priv;
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dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
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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 TUA 9001",
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.frequency_min = 170000000,
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.frequency_max = 862000000,
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.frequency_step = 0,
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},
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.release = tua9001_release,
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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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struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tua9001_config *cfg)
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{
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struct tua9001_priv *priv = NULL;
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int ret;
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priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL);
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if (priv == NULL)
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return NULL;
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priv->cfg = cfg;
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priv->i2c = i2c;
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if (fe->callback) {
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ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_CEN, 1);
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if (ret < 0)
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goto err;
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ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RXEN, 0);
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if (ret < 0)
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goto err;
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ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
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TUA9001_CMD_RESETN, 1);
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if (ret < 0)
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goto err;
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}
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dev_info(&priv->i2c->dev,
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"%s: Infineon TUA 9001 successfully attached\n",
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KBUILD_MODNAME);
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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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fe->tuner_priv = priv;
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return fe;
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err:
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dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
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kfree(priv);
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return NULL;
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}
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EXPORT_SYMBOL(tua9001_attach);
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MODULE_DESCRIPTION("Infineon TUA 9001 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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