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[media] tda18218: implement .get_if_frequency()

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Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2011-11-13 00:19:56 -03:00 committed by Mauro Carvalho Chehab
parent 022568f058
commit 522fdf7319
2 changed files with 17 additions and 3 deletions
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18
drivers/media/common/tuners/tda18218.c
View File

@ -141,19 +141,21 @@ static int tda18218_set_params(struct dvb_frontend *fe,
switch (params->u.ofdm.bandwidth) { switch (params->u.ofdm.bandwidth) {
case BANDWIDTH_6_MHZ: case BANDWIDTH_6_MHZ:
LP_Fc = 0; LP_Fc = 0;
LO_Frac = params->frequency + 4000000; priv->if_frequency = 4000000;
break; break;
case BANDWIDTH_7_MHZ: case BANDWIDTH_7_MHZ:
LP_Fc = 1; LP_Fc = 1;
LO_Frac = params->frequency + 3500000; priv->if_frequency = 3500000;
break; break;
case BANDWIDTH_8_MHZ: case BANDWIDTH_8_MHZ:
default: default:
LP_Fc = 2; LP_Fc = 2;
LO_Frac = params->frequency + 4000000; priv->if_frequency = 4000000;
break; break;
} }
LO_Frac = params->frequency + priv->if_frequency;
/* band-pass filter */ /* band-pass filter */
if (LO_Frac < 188000000) if (LO_Frac < 188000000)
BP_Filter = 3; BP_Filter = 3;
@ -206,6 +208,14 @@ error:
return ret; return ret;
} }
static int tda18218_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct tda18218_priv *priv = fe->tuner_priv;
*frequency = priv->if_frequency;
dbg("%s: if=%d", __func__, *frequency);
return 0;
}
static int tda18218_sleep(struct dvb_frontend *fe) static int tda18218_sleep(struct dvb_frontend *fe)
{ {
struct tda18218_priv *priv = fe->tuner_priv; struct tda18218_priv *priv = fe->tuner_priv;
@ -268,6 +278,8 @@ static const struct dvb_tuner_ops tda18218_tuner_ops = {
.sleep = tda18218_sleep, .sleep = tda18218_sleep,
.set_params = tda18218_set_params, .set_params = tda18218_set_params,
.get_if_frequency = tda18218_get_if_frequency,
}; };
struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe, struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe,

2
drivers/media/common/tuners/tda18218_priv.h
View File

@ -100,6 +100,8 @@ struct tda18218_priv {
struct tda18218_config *cfg; struct tda18218_config *cfg;
struct i2c_adapter *i2c; struct i2c_adapter *i2c;
u32 if_frequency;
u8 regs[TDA18218_NUM_REGS]; u8 regs[TDA18218_NUM_REGS];
}; };