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[media] tuner-core/tda9887: get_afc can be tuner mode specific

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The get_afc op in tda9887 is valid only for the radio mode.
But due to the way get_afc in analog_demod_ops was designed it would
overwrite the afc value with a bogus value when in TV mode.
Pass a pointer to the afc value instead, and when not in radio mode
leave it alone in the tda9887.
This broke a long time ago in 2.6.19 when the get_afc op was introduced.
Before that the afc was only set for radio mode in the tda9887.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
2013-04-06 04:35:27 -03:00
committed by Mauro Carvalho Chehab
parent d047795c59
commit a2192cf47f
3 changed files with 10 additions and 20 deletions
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14
drivers/media/tuners/tda9887.c
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@@ -596,22 +596,22 @@ static void tda9887_tuner_status(struct dvb_frontend *fe)
priv->data[1], priv->data[2], priv->data[3]);
}
static int tda9887_get_afc(struct dvb_frontend *fe)
static int tda9887_get_afc(struct dvb_frontend *fe, s32 *afc)
{
struct tda9887_priv *priv = fe->analog_demod_priv;
static int AFC_BITS_2_kHz[] = {
static const int AFC_BITS_2_kHz[] = {
-12500, -37500, -62500, -97500,
-112500, -137500, -162500, -187500,
187500, 162500, 137500, 112500,
97500 , 62500, 37500 , 12500
};
int afc=0;
__u8 reg = 0;
if (1 == tuner_i2c_xfer_recv(&priv->i2c_props,&reg,1))
afc = AFC_BITS_2_kHz[(reg>>1)&0x0f];
return afc;
if (priv->mode != V4L2_TUNER_RADIO)
return 0;
if (1 == tuner_i2c_xfer_recv(&priv->i2c_props, &reg, 1))
*afc = AFC_BITS_2_kHz[(reg >> 1) & 0x0f];
return 0;
}
static void tda9887_standby(struct dvb_frontend *fe)