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Commit 483deb0f authored Dec 04, 2006 by Mauro Carvalho Chehab

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>

parent cefccc80

drivers/media/video/tuner-simple.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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)))

include/media/tuner-types.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -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. */