| /* |
| * Infineon TUA 9001 silicon tuner driver |
| * |
| * Copyright (C) 2009 Antti Palosaari <crope@iki.fi> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| #include "tua9001.h" |
| #include "tua9001_priv.h" |
| |
| /* write register */ |
| static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val) |
| { |
| int ret; |
| u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff }; |
| struct i2c_msg msg[1] = { |
| { |
| .addr = priv->cfg->i2c_addr, |
| .flags = 0, |
| .len = sizeof(buf), |
| .buf = buf, |
| } |
| }; |
| |
| ret = i2c_transfer(priv->i2c, msg, 1); |
| if (ret == 1) { |
| ret = 0; |
| } else { |
| dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n", |
| KBUILD_MODNAME, ret, reg); |
| ret = -EREMOTEIO; |
| } |
| |
| return ret; |
| } |
| |
| static int tua9001_release(struct dvb_frontend *fe) |
| { |
| struct tua9001_priv *priv = fe->tuner_priv; |
| int ret = 0; |
| |
| dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| |
| if (fe->callback) |
| ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, |
| TUA9001_CMD_CEN, 0); |
| |
| kfree(fe->tuner_priv); |
| fe->tuner_priv = NULL; |
| |
| return ret; |
| } |
| |
| static int tua9001_init(struct dvb_frontend *fe) |
| { |
| struct tua9001_priv *priv = fe->tuner_priv; |
| int ret = 0; |
| u8 i; |
| struct reg_val data[] = { |
| { 0x1e, 0x6512 }, |
| { 0x25, 0xb888 }, |
| { 0x39, 0x5460 }, |
| { 0x3b, 0x00c0 }, |
| { 0x3a, 0xf000 }, |
| { 0x08, 0x0000 }, |
| { 0x32, 0x0030 }, |
| { 0x41, 0x703a }, |
| { 0x40, 0x1c78 }, |
| { 0x2c, 0x1c00 }, |
| { 0x36, 0xc013 }, |
| { 0x37, 0x6f18 }, |
| { 0x27, 0x0008 }, |
| { 0x2a, 0x0001 }, |
| { 0x34, 0x0a40 }, |
| }; |
| |
| dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| |
| if (fe->callback) { |
| ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, |
| TUA9001_CMD_RESETN, 0); |
| if (ret < 0) |
| goto err; |
| } |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */ |
| |
| for (i = 0; i < ARRAY_SIZE(data); i++) { |
| ret = tua9001_wr_reg(priv, data[i].reg, data[i].val); |
| if (ret < 0) |
| goto err_i2c_gate_ctrl; |
| } |
| |
| err_i2c_gate_ctrl: |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */ |
| err: |
| if (ret < 0) |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| |
| return ret; |
| } |
| |
| static int tua9001_sleep(struct dvb_frontend *fe) |
| { |
| struct tua9001_priv *priv = fe->tuner_priv; |
| int ret = 0; |
| |
| dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| |
| if (fe->callback) |
| ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, |
| TUA9001_CMD_RESETN, 1); |
| |
| if (ret < 0) |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| |
| return ret; |
| } |
| |
| static int tua9001_set_params(struct dvb_frontend *fe) |
| { |
| struct tua9001_priv *priv = fe->tuner_priv; |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| int ret = 0, i; |
| u16 val; |
| u32 frequency; |
| struct reg_val data[2]; |
| |
| dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \ |
| "bandwidth_hz=%d\n", __func__, |
| c->delivery_system, c->frequency, c->bandwidth_hz); |
| |
| switch (c->delivery_system) { |
| case SYS_DVBT: |
| switch (c->bandwidth_hz) { |
| case 8000000: |
| val = 0x0000; |
| break; |
| case 7000000: |
| val = 0x1000; |
| break; |
| case 6000000: |
| val = 0x2000; |
| break; |
| case 5000000: |
| val = 0x3000; |
| break; |
| default: |
| ret = -EINVAL; |
| goto err; |
| } |
| break; |
| default: |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| data[0].reg = 0x04; |
| data[0].val = val; |
| |
| frequency = (c->frequency - 150000000); |
| frequency /= 100; |
| frequency *= 48; |
| frequency /= 10000; |
| |
| data[1].reg = 0x1f; |
| data[1].val = frequency; |
| |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */ |
| |
| if (fe->callback) { |
| ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, |
| TUA9001_CMD_RXEN, 0); |
| if (ret < 0) |
| goto err_i2c_gate_ctrl; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(data); i++) { |
| ret = tua9001_wr_reg(priv, data[i].reg, data[i].val); |
| if (ret < 0) |
| goto err_i2c_gate_ctrl; |
| } |
| |
| if (fe->callback) { |
| ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, |
| TUA9001_CMD_RXEN, 1); |
| if (ret < 0) |
| goto err_i2c_gate_ctrl; |
| } |
| |
| err_i2c_gate_ctrl: |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */ |
| err: |
| if (ret < 0) |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| |
| return ret; |
| } |
| |
| static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) |
| { |
| struct tua9001_priv *priv = fe->tuner_priv; |
| |
| dev_dbg(&priv->i2c->dev, "%s:\n", __func__); |
| |
| *frequency = 0; /* Zero-IF */ |
| |
| return 0; |
| } |
| |
| static const struct dvb_tuner_ops tua9001_tuner_ops = { |
| .info = { |
| .name = "Infineon TUA 9001", |
| |
| .frequency_min = 170000000, |
| .frequency_max = 862000000, |
| .frequency_step = 0, |
| }, |
| |
| .release = tua9001_release, |
| |
| .init = tua9001_init, |
| .sleep = tua9001_sleep, |
| .set_params = tua9001_set_params, |
| |
| .get_if_frequency = tua9001_get_if_frequency, |
| }; |
| |
| struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe, |
| struct i2c_adapter *i2c, struct tua9001_config *cfg) |
| { |
| struct tua9001_priv *priv = NULL; |
| int ret; |
| |
| priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL); |
| if (priv == NULL) |
| return NULL; |
| |
| priv->cfg = cfg; |
| priv->i2c = i2c; |
| |
| if (fe->callback) { |
| ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, |
| TUA9001_CMD_CEN, 1); |
| if (ret < 0) |
| goto err; |
| |
| ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, |
| TUA9001_CMD_RXEN, 0); |
| if (ret < 0) |
| goto err; |
| |
| ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER, |
| TUA9001_CMD_RESETN, 1); |
| if (ret < 0) |
| goto err; |
| } |
| |
| dev_info(&priv->i2c->dev, |
| "%s: Infineon TUA 9001 successfully attached\n", |
| KBUILD_MODNAME); |
| |
| memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops, |
| sizeof(struct dvb_tuner_ops)); |
| |
| fe->tuner_priv = priv; |
| return fe; |
| err: |
| dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret); |
| kfree(priv); |
| return NULL; |
| } |
| EXPORT_SYMBOL(tua9001_attach); |
| |
| MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver"); |
| MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
| MODULE_LICENSE("GPL"); |
