Commit 98c65a3d authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

media: si2157: add support for 1.7MHz and 6.1 MHz 



Some tuners allow setting the bandwidth filter to 1.7MHz and
6.1 MHz. Add support for it upstream, as the narrower is the
bandwidth filter, the better.

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 6446a22a

drivers/media/tuners/si2157.c

+4 −0
Original line number Diff line number Diff line
@@ -458,8 +458,12 @@ static int si2157_set_params(struct dvb_frontend *fe) 
		goto err;

	}



	if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 1700000)

		bandwidth = 0x09;

	if (c->bandwidth_hz <= 6000000)

		bandwidth = 0x06;

	if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 6100000)

		bandwidth = 0x10;

	else if (c->bandwidth_hz <= 7000000)

		bandwidth = 0x07;

	else if (c->bandwidth_hz <= 8000000)

drivers/media/tuners/si2157_priv.h

+5 −0
Original line number Diff line number Diff line
@@ -66,6 +66,11 @@ struct si2157_cmd { 
	unsigned rlen;

};



#define SUPPORTS_1700KHz(dev) (((dev)->part_id == SI2141) || \

			       ((dev)->part_id == SI2147) || \

			       ((dev)->part_id == SI2157) || \

			       ((dev)->part_id == SI2177))



/* Old firmware namespace */

#define SI2158_A20_FIRMWARE "dvb-tuner-si2158-a20-01.fw"

#define SI2141_A10_FIRMWARE "dvb-tuner-si2141-a10-01.fw"