From: Hans Verkuil <hans.verk...@cisco.com>
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.
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/dvb-core/dvb_frontend.h | 2 +-
drivers/media/tuners/tda8290.c | 15 +++++++++------
drivers/media/tuners/tuner-simple.c | 5 ++++-
drivers/media/v4l2-core/tuner-core.c | 29 +++++++++++++----------------
4 files changed, 27 insertions(+), 24 deletions(-)
diff --git a/drivers/media/dvb-core/dvb_frontend.h
b/drivers/media/dvb-core/dvb_frontend.h
index 44fad1c..371b6ca 100644
--- a/drivers/media/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb-core/dvb_frontend.h
@@ -245,7 +245,7 @@ struct analog_demod_ops {
void (*set_params)(struct dvb_frontend *fe,
struct analog_parameters *params);
- int (*has_signal)(struct dvb_frontend *fe);
+ int (*has_signal)(struct dvb_frontend *fe, u16 *signal);
int (*get_afc)(struct dvb_frontend *fe, s32 *afc);
void (*tuner_status)(struct dvb_frontend *fe);
void (*standby)(struct dvb_frontend *fe);
diff --git a/drivers/media/tuners/tda8290.c b/drivers/media/tuners/tda8290.c
index 8c48521..119339bd 100644
--- a/drivers/media/tuners/tda8290.c
+++ b/drivers/media/tuners/tda8290.c
@@ -388,7 +388,7 @@ 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;
@@ -396,7 +396,8 @@ 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;
}
/*---------------------------------------------------------------------*/
@@ -405,7 +406,7 @@ 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);
@@ -432,7 +433,8 @@ 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");
@@ -442,7 +444,7 @@ 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;
@@ -451,7 +453,8 @@ 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 39e7e58..ca274c2 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;
diff --git a/drivers/media/v4l2-core/tuner-core.c
b/drivers/media/v4l2-core/tuner-core.c
index b2d057d..7702159 100644
--- a/drivers/media/v4l2-core/tuner-core.c
+++ b/drivers/media/v4l2-core/tuner-core.c
@@ -218,16 +218,6 @@ static void fe_standby(struct dvb_frontend *fe)
fe_tuner_ops->sleep(fe);
}
-static int fe_has_signal(struct dvb_frontend *fe)
-{
- u16 strength;
-
- if (fe->ops.tuner_ops.get_rf_strength(fe, &strength) < 0)
- return 0;
-
- return strength;
-}
-
static int fe_set_config(struct dvb_frontend *fe, void *priv_cfg)
{
struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
@@ -442,7 +432,7 @@ static void set_type(struct i2c_client *c, unsigned int
type,
sizeof(struct analog_demod_ops));
if (fe_tuner_ops->get_rf_strength)
- analog_ops->has_signal = fe_has_signal;
+ analog_ops->has_signal = fe_tuner_ops->get_rf_strength;
if (fe_tuner_ops->get_afc)
analog_ops->get_afc = fe_tuner_ops->get_afc;
@@ -1066,9 +1056,12 @@ static void tuner_status(struct dvb_frontend *fe)
if (tuner_status & TUNER_STATUS_STEREO)
tuner_info("Stereo: yes\n");
}
- if (analog_ops->has_signal)
- tuner_info("Signal strength: %d\n",
- analog_ops->has_signal(fe));
+ if (analog_ops->has_signal) {
+ u16 signal;
+
+ if (!analog_ops->has_signal(fe, &signal))
+ tuner_info("Signal strength: %hu\n", signal);
+ }
}
/*
@@ -1187,8 +1180,12 @@ static int tuner_g_tuner(struct v4l2_subdev *sd, struct
v4l2_tuner *vt)
return 0;
if (vt->type == t->mode && analog_ops->get_afc)
analog_ops->get_afc(&t->fe, &vt->afc);
- if (analog_ops->has_signal)
- vt->signal = analog_ops->has_signal(&t->fe);
+ if (vt->type == t->mode && analog_ops->has_signal) {
+ u16 signal = (u16)vt->signal;
+
+ if (!analog_ops->has_signal(&t->fe, &signal))
+ vt->signal = signal;
+ }
if (vt->type != V4L2_TUNER_RADIO) {
vt->capability |= V4L2_TUNER_CAP_NORM;
vt->rangelow = tv_range[0] * 16;
--
1.7.10.4
--
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