/* * Infineon TUA 9001 silicon tuner driver * * Copyright (C) 2009 Antti Palosaari * * 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, 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; } 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 "); MODULE_LICENSE("GPL");