2 * Infineon TUA 9001 silicon tuner driver
4 * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "tua9001_priv.h"
25 static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
28 u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff };
29 struct i2c_msg msg[1] = {
31 .addr = priv->cfg->i2c_addr,
38 ret = i2c_transfer(priv->i2c, msg, 1);
42 dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n",
43 KBUILD_MODNAME, ret, reg);
50 static int tua9001_release(struct dvb_frontend *fe)
52 struct tua9001_priv *priv = fe->tuner_priv;
55 dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
58 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
61 kfree(fe->tuner_priv);
62 fe->tuner_priv = NULL;
67 static int tua9001_init(struct dvb_frontend *fe)
69 struct tua9001_priv *priv = fe->tuner_priv;
72 struct reg_val data[] = {
90 dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
93 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
94 TUA9001_CMD_RESETN, 0);
99 if (fe->ops.i2c_gate_ctrl)
100 fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
102 for (i = 0; i < ARRAY_SIZE(data); i++) {
103 ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
105 goto err_i2c_gate_ctrl;
109 if (fe->ops.i2c_gate_ctrl)
110 fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
113 dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
118 static int tua9001_sleep(struct dvb_frontend *fe)
120 struct tua9001_priv *priv = fe->tuner_priv;
123 dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
126 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
127 TUA9001_CMD_RESETN, 1);
130 dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
135 static int tua9001_set_params(struct dvb_frontend *fe)
137 struct tua9001_priv *priv = fe->tuner_priv;
138 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
142 struct reg_val data[2];
144 dev_dbg(&priv->i2c->dev, "%s: delivery_system=%d frequency=%d " \
145 "bandwidth_hz=%d\n", __func__,
146 c->delivery_system, c->frequency, c->bandwidth_hz);
148 switch (c->delivery_system) {
150 switch (c->bandwidth_hz) {
176 frequency = (c->frequency - 150000000);
182 data[1].val = frequency;
184 if (fe->ops.i2c_gate_ctrl)
185 fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
188 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
189 TUA9001_CMD_RXEN, 0);
191 goto err_i2c_gate_ctrl;
194 for (i = 0; i < ARRAY_SIZE(data); i++) {
195 ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
197 goto err_i2c_gate_ctrl;
201 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
202 TUA9001_CMD_RXEN, 1);
204 goto err_i2c_gate_ctrl;
208 if (fe->ops.i2c_gate_ctrl)
209 fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
212 dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
217 static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
219 struct tua9001_priv *priv = fe->tuner_priv;
221 dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
223 *frequency = 0; /* Zero-IF */
228 static const struct dvb_tuner_ops tua9001_tuner_ops = {
230 .name = "Infineon TUA 9001",
232 .frequency_min = 170000000,
233 .frequency_max = 862000000,
237 .release = tua9001_release,
239 .init = tua9001_init,
240 .sleep = tua9001_sleep,
241 .set_params = tua9001_set_params,
243 .get_if_frequency = tua9001_get_if_frequency,
246 struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
247 struct i2c_adapter *i2c, struct tua9001_config *cfg)
249 struct tua9001_priv *priv = NULL;
252 priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL);
260 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
265 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
266 TUA9001_CMD_RXEN, 0);
270 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
271 TUA9001_CMD_RESETN, 1);
276 dev_info(&priv->i2c->dev,
277 "%s: Infineon TUA 9001 successfully attached\n",
280 memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
281 sizeof(struct dvb_tuner_ops));
283 fe->tuner_priv = priv;
286 dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
290 EXPORT_SYMBOL(tua9001_attach);
292 MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver");
293 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
294 MODULE_LICENSE("GPL");