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authorMauro Carvalho Chehab <mchehab@infradead.org>2006-12-04 08:31:38 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-12-10 09:05:52 -0200
commit483deb0f2b38060c1f2de216c09f05b1869b0d52 (patch)
tree1c7158b274e826dbcfa57169effff84a0b35c2ae
parentcefccc8011c58b559498396f0ccefa0a0ffa3f53 (diff)
downloadop-kernel-dev-483deb0f2b38060c1f2de216c09f05b1869b0d52.zip
op-kernel-dev-483deb0f2b38060c1f2de216c09f05b1869b0d52.tar.gz
V4L/DVB (4935): Added the capability of selecting fm gain by tuner
Some tuners require using cGainNormal instead of cGainLow for high sensibility on FM reception. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
-rw-r--r--drivers/media/video/tuner-simple.c2
-rw-r--r--include/media/tuner-types.h4
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/media/video/tuner-simple.c b/drivers/media/video/tuner-simple.c
index fcf8693..1b9b074 100644
--- a/drivers/media/video/tuner-simple.c
+++ b/drivers/media/video/tuner-simple.c
@@ -467,6 +467,8 @@ static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
config |= TDA9887_INTERCARRIER;
/* if (params->port1_set_for_fm_mono)
config &= ~TDA9887_PORT1_ACTIVE;*/
+ if (params->fm_gain_normal)
+ config |= TDA9887_GAIN_NORMAL;
i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
}
if (4 != (rc = i2c_master_send(c,buffer,4)))
diff --git a/include/media/tuner-types.h b/include/media/tuner-types.h
index 37dad07..e5ad3fc 100644
--- a/include/media/tuner-types.h
+++ b/include/media/tuner-types.h
@@ -50,6 +50,10 @@ struct tuner_params {
sensitivity. If this setting is 1, then set PORT2 to 1 to
get proper FM reception. */
unsigned int port2_fm_high_sensitivity:1;
+ /* Some Philips tuners use tda9887 cGainNormal to select the FM radio
+ sensitivity. If this setting is 1, e register will use cGainNormal
+ instead of cGainLow. */
+ unsigned int fm_gain_normal:1;
/* Most tuners with a tda9887 use QSS mode. Some (cheaper) tuners
use Intercarrier mode. If this setting is 1, then the tuner
needs to be set to intercarrier mode. */
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