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: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> --- To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover. See [PATCH 0/3] at: https://lore.kernel.org/all/cover.1639140967.git.mchehab+huawei@xxxxxxxxxx/ drivers/media/tuners/si2157.c | 4 ++++ drivers/media/tuners/si2157_priv.h | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index aeecb38b147f..2d3937af4f5f 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -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) diff --git a/drivers/media/tuners/si2157_priv.h b/drivers/media/tuners/si2157_priv.h index df17a5f03561..24849c8ed398 100644 --- a/drivers/media/tuners/si2157_priv.h +++ b/drivers/media/tuners/si2157_priv.h @@ -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" -- 2.33.1
