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authorHans Verkuil2013-04-06 04:41:29 -0300
committerMauro Carvalho Chehab2013-04-14 19:44:50 -0300
commitdfc2e12df02d49a1567bc90989ceef870cf5b147 (patch)
tree772748f182a85c71d118f94c8e38a2a8ef05f8f7 /drivers/media/tuners
parenta2192cf47f593681cd65798880853c5224066c81 (diff)
[media] tuner-core/simple: get_rf_strength can be tuner mode specific
The get_rf_strength op in tuner-simple is valid only for the radio mode. But due to the way get_signal in analog_demod_ops was designed it would overwrite the signal value with a bogus value when in TV mode. Pass a pointer to the signal value instead, and when not in radio mode leave it alone in the tuner-simple. This broke in commit 030755bde42bbed133182b0ece7c7a9c759478e8 (tuner-core: call has_signal for both TV and radio) in kernel 3.6. Before that this was working correctly. That commit did the right thing, but what wasn't realized at the time was that tuner-simple should have been updated as well to restrict setting the signal strength to the radio mode only. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/tuners')
-rw-r--r--drivers/media/tuners/tda8290.c15
-rw-r--r--drivers/media/tuners/tuner-simple.c5
2 files changed, 13 insertions, 7 deletions
diff --git a/drivers/media/tuners/tda8290.c b/drivers/media/tuners/tda8290.c
index 20cc7dad6b4e..ab4106c17b4c 100644
--- a/drivers/media/tuners/tda8290.c
+++ b/drivers/media/tuners/tda8290.c
@@ -391,7 +391,7 @@ static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
}
-static int tda8295_has_signal(struct dvb_frontend *fe)
+static int tda8295_has_signal(struct dvb_frontend *fe, u16 *signal)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
@@ -399,7 +399,8 @@ static int tda8295_has_signal(struct dvb_frontend *fe)
unsigned char ret;
tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1);
- return (ret & 0x01) ? 65535 : 0;
+ *signal = (ret & 0x01) ? 65535 : 0;
+ return 0;
}
/*---------------------------------------------------------------------*/
@@ -408,7 +409,7 @@ static void tda8295_set_params(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
-
+ u16 signal = 0;
unsigned char blanking_mode[] = { 0x1d, 0x00 };
set_audio(fe, params);
@@ -436,7 +437,8 @@ static void tda8295_set_params(struct dvb_frontend *fe,
if (priv->cfg.agcf)
priv->cfg.agcf(fe);
- if (tda8295_has_signal(fe))
+ tda8295_has_signal(fe, &signal);
+ if (signal)
tuner_dbg("tda8295 is locked\n");
else
tuner_dbg("tda8295 not locked, no signal?\n");
@@ -447,7 +449,7 @@ static void tda8295_set_params(struct dvb_frontend *fe,
/*---------------------------------------------------------------------*/
-static int tda8290_has_signal(struct dvb_frontend *fe)
+static int tda8290_has_signal(struct dvb_frontend *fe, u16 *signal)
{
struct tda8290_priv *priv = fe->analog_demod_priv;
@@ -456,7 +458,8 @@ static int tda8290_has_signal(struct dvb_frontend *fe)
tuner_i2c_xfer_send_recv(&priv->i2c_props,
i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1);
- return (afc & 0x80)? 65535:0;
+ *signal = (afc & 0x80) ? 65535 : 0;
+ return 0;
}
/*---------------------------------------------------------------------*/
diff --git a/drivers/media/tuners/tuner-simple.c b/drivers/media/tuners/tuner-simple.c
index 39e7e583c8c0..ca274c2d8c70 100644
--- a/drivers/media/tuners/tuner-simple.c
+++ b/drivers/media/tuners/tuner-simple.c
@@ -115,6 +115,7 @@ struct tuner_simple_priv {
u32 frequency;
u32 bandwidth;
+ bool radio_mode;
};
/* ---------------------------------------------------------------------- */
@@ -189,7 +190,7 @@ static int simple_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
struct tuner_simple_priv *priv = fe->tuner_priv;
int signal;
- if (priv->i2c_props.adap == NULL)
+ if (priv->i2c_props.adap == NULL || !priv->radio_mode)
return -EINVAL;
signal = tuner_signal(tuner_read_status(fe));
@@ -776,11 +777,13 @@ static int simple_set_params(struct dvb_frontend *fe,
switch (params->mode) {
case V4L2_TUNER_RADIO:
+ priv->radio_mode = true;
ret = simple_set_radio_freq(fe, params);
priv->frequency = params->frequency * 125 / 2;
break;
case V4L2_TUNER_ANALOG_TV:
case V4L2_TUNER_DIGITAL_TV:
+ priv->radio_mode = false;
ret = simple_set_tv_freq(fe, params);
priv->frequency = params->frequency * 62500;
break;