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[media] NXP TDA18212HN silicon tuner driver

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New silicon tuner driver.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2011-04-09 20:07:30 -03:00 committed by Mauro Carvalho Chehab
parent 437b77552f
commit 26eb7045f1
5 changed files with 366 additions and 0 deletions
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8
drivers/media/common/tuners/Kconfig
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@ -186,4 +186,12 @@ config MEDIA_TUNER_TDA18218
default m if MEDIA_TUNER_CUSTOMISE
help
NXP TDA18218 silicon tuner driver.
config MEDIA_TUNER_TDA18212
tristate "NXP TDA18212 silicon tuner"
depends on VIDEO_MEDIA && I2C
default m if MEDIA_TUNER_CUSTOMISE
help
NXP TDA18212 silicon tuner driver.
endmenu

1
drivers/media/common/tuners/Makefile
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@ -25,6 +25,7 @@ obj-$(CONFIG_MEDIA_TUNER_MXL5007T) += mxl5007t.o
obj-$(CONFIG_MEDIA_TUNER_MC44S803) += mc44s803.o
obj-$(CONFIG_MEDIA_TUNER_MAX2165) += max2165.o
obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o
obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o
EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
EXTRA_CFLAGS += -Idrivers/media/dvb/frontends

265
drivers/media/common/tuners/tda18212.c Normal file
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@ -0,0 +1,265 @@
/*
* NXP TDA18212HN silicon tuner driver
*
* Copyright (C) 2011 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 "tda18212_priv.h"
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
/* write multiple registers */
static int tda18212_wr_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
int len)
{
int ret;
u8 buf[len+1];
struct i2c_msg msg[1] = {
{
.addr = priv->cfg->i2c_address,
.flags = 0,
.len = sizeof(buf),
.buf = buf,
}
};
buf[0] = reg;
memcpy(&buf[1], val, len);
ret = i2c_transfer(priv->i2c, msg, 1);
if (ret == 1) {
ret = 0;
} else {
warn("i2c wr failed ret:%d reg:%02x len:%d", ret, reg, len);
ret = -EREMOTEIO;
}
return ret;
}
/* read multiple registers */
static int tda18212_rd_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
int len)
{
int ret;
u8 buf[len];
struct i2c_msg msg[2] = {
{
.addr = priv->cfg->i2c_address,
.flags = 0,
.len = 1,
.buf = &reg,
}, {
.addr = priv->cfg->i2c_address,
.flags = I2C_M_RD,
.len = sizeof(buf),
.buf = buf,
}
};
ret = i2c_transfer(priv->i2c, msg, 2);
if (ret == 2) {
memcpy(val, buf, len);
ret = 0;
} else {
warn("i2c rd failed ret:%d reg:%02x len:%d", ret, reg, len);
ret = -EREMOTEIO;
}
return ret;
}
/* write single register */
static int tda18212_wr_reg(struct tda18212_priv *priv, u8 reg, u8 val)
{
return tda18212_wr_regs(priv, reg, &val, 1);
}
/* read single register */
static int tda18212_rd_reg(struct tda18212_priv *priv, u8 reg, u8 *val)
{
return tda18212_rd_regs(priv, reg, val, 1);
}
#if 0 /* keep, useful when developing driver */
static void tda18212_dump_regs(struct tda18212_priv *priv)
{
int i;
u8 buf[256];
#define TDA18212_RD_LEN 32
for (i = 0; i < sizeof(buf); i += TDA18212_RD_LEN)
tda18212_rd_regs(priv, i, &buf[i], TDA18212_RD_LEN);
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 32, 1, buf,
sizeof(buf), true);
return;
}
#endif
static int tda18212_set_params(struct dvb_frontend *fe,
struct dvb_frontend_parameters *p)
{
struct tda18212_priv *priv = fe->tuner_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i;
u32 if_khz;
u8 buf[9];
static const u8 bw_params[][3] = {
/* 0f 13 23 */
{ 0xb3, 0x20, 0x03 }, /* DVB-T 6 MHz */
{ 0xb3, 0x31, 0x01 }, /* DVB-T 7 MHz */
{ 0xb3, 0x22, 0x01 }, /* DVB-T 8 MHz */
{ 0x92, 0x53, 0x03 }, /* DVB-C */
};
dbg("%s: delsys=%d RF=%d BW=%d", __func__,
c->delivery_system, c->frequency, c->bandwidth_hz);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
switch (c->delivery_system) {
case SYS_DVBT:
switch (c->bandwidth_hz) {
case 6000000:
if_khz = priv->cfg->if_dvbt_6;
i = 0;
break;
case 7000000:
if_khz = priv->cfg->if_dvbt_7;
i = 1;
break;
case 8000000:
if_khz = priv->cfg->if_dvbt_8;
i = 2;
break;
default:
ret = -EINVAL;
goto error;
}
break;
case SYS_DVBC_ANNEX_AC:
if_khz = priv->cfg->if_dvbc;
i = 3;
break;
default:
ret = -EINVAL;
goto error;
}
ret = tda18212_wr_reg(priv, 0x23, bw_params[i][2]);
if (ret)
goto error;
ret = tda18212_wr_reg(priv, 0x06, 0x00);
if (ret)
goto error;
ret = tda18212_wr_reg(priv, 0x0f, bw_params[i][0]);
if (ret)
goto error;
buf[0] = 0x02;
buf[1] = bw_params[i][1];
buf[2] = 0x03; /* default value */
buf[3] = if_khz / 50;
buf[4] = ((c->frequency / 1000) >> 16) & 0xff;
buf[5] = ((c->frequency / 1000) >> 8) & 0xff;
buf[6] = ((c->frequency / 1000) >> 0) & 0xff;
buf[7] = 0xc1;
buf[8] = 0x01;
ret = tda18212_wr_regs(priv, 0x12, buf, sizeof(buf));
if (ret)
goto error;
exit:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
return ret;
error:
dbg("%s: failed:%d", __func__, ret);
goto exit;
}
static int tda18212_release(struct dvb_frontend *fe)
{
kfree(fe->tuner_priv);
fe->tuner_priv = NULL;
return 0;
}
static const struct dvb_tuner_ops tda18212_tuner_ops = {
.info = {
.name = "NXP TDA18212",
.frequency_min = 48000000,
.frequency_max = 864000000,
.frequency_step = 1000,
},
.release = tda18212_release,
.set_params = tda18212_set_params,
};
struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, struct tda18212_config *cfg)
{
struct tda18212_priv *priv = NULL;
int ret;
u8 val;
priv = kzalloc(sizeof(struct tda18212_priv), GFP_KERNEL);
if (priv == NULL)
return NULL;
priv->cfg = cfg;
priv->i2c = i2c;
fe->tuner_priv = priv;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
/* check if the tuner is there */
ret = tda18212_rd_reg(priv, 0x00, &val);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
dbg("%s: ret:%d chip ID:%02x", __func__, ret, val);
if (ret || val != 0xc7) {
kfree(priv);
return NULL;
}
info("NXP TDA18212HN successfully identified.");
memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
sizeof(struct dvb_tuner_ops));
return fe;
}
EXPORT_SYMBOL(tda18212_attach);
MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");

48
drivers/media/common/tuners/tda18212.h Normal file
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@ -0,0 +1,48 @@
/*
* NXP TDA18212HN silicon tuner driver
*
* Copyright (C) 2011 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.
*/
#ifndef TDA18212_H
#define TDA18212_H
#include "dvb_frontend.h"
struct tda18212_config {
u8 i2c_address;
u16 if_dvbt_6;
u16 if_dvbt_7;
u16 if_dvbt_8;
u16 if_dvbc;
};
#if defined(CONFIG_MEDIA_TUNER_TDA18212) || \
(defined(CONFIG_MEDIA_TUNER_TDA18212_MODULE) && defined(MODULE))
extern struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, struct tda18212_config *cfg);
#else
static inline struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, struct tda18212_config *cfg)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif
#endif

44
drivers/media/common/tuners/tda18212_priv.h Normal file
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@ -0,0 +1,44 @@
/*
* NXP TDA18212HN silicon tuner driver
*
* Copyright (C) 2011 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.
*/
#ifndef TDA18212_PRIV_H
#define TDA18212_PRIV_H
#include "tda18212.h"
#define LOG_PREFIX "tda18212"
#undef dbg
#define dbg(f, arg...) \
if (debug) \
printk(KERN_INFO LOG_PREFIX": " f "\n" , ## arg)
#undef err
#define err(f, arg...) printk(KERN_ERR LOG_PREFIX": " f "\n" , ## arg)
#undef info
#define info(f, arg...) printk(KERN_INFO LOG_PREFIX": " f "\n" , ## arg)
#undef warn
#define warn(f, arg...) printk(KERN_WARNING LOG_PREFIX": " f "\n" , ## arg)
struct tda18212_priv {
struct tda18212_config *cfg;
struct i2c_adapter *i2c;
};
#endif