diff options
| author | Olli Salonen <olli.salonen@iki.fi> | 2014-07-13 17:52:21 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-15 04:07:07 +0400 |
| commit | a1dad50d8cdce0be71489c7544ffcd36cf80e994 (patch) | |
| tree | 2df2fc6f72fc1bc165bbee40f8cd31a6f06004e3 /drivers/media/tuners/si2157.c | |
| parent | 1b92373f4b845019064d6a7c47b2ba72ebac191c (diff) | |
| download | linux-a1dad50d8cdce0be71489c7544ffcd36cf80e994.tar.xz | |
[media] si2157: Set delivery system and bandwidth before tuning
Tell used TV standard and bandwidth for tuner firmware.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/tuners/si2157.c')
| -rw-r--r-- | drivers/media/tuners/si2157.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index 58c5ef586383..b656f9b72e84 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -209,6 +209,7 @@ static int si2157_set_params(struct dvb_frontend *fe) struct dtv_frontend_properties *c = &fe->dtv_property_cache; int ret; struct si2157_cmd cmd; + u8 bandwidth, delivery_system; dev_dbg(&s->client->dev, "%s: delivery_system=%d frequency=%u bandwidth_hz=%u\n", @@ -220,6 +221,36 @@ static int si2157_set_params(struct dvb_frontend *fe) goto err; } + if (c->bandwidth_hz <= 6000000) + bandwidth = 0x06; + else if (c->bandwidth_hz <= 7000000) + bandwidth = 0x07; + else if (c->bandwidth_hz <= 8000000) + bandwidth = 0x08; + else + bandwidth = 0x0f; + + switch (c->delivery_system) { + case SYS_DVBT: + case SYS_DVBT2: /* it seems DVB-T and DVB-T2 both are 0x20 here */ + delivery_system = 0x20; + break; + case SYS_DVBC_ANNEX_A: + delivery_system = 0x30; + break; + default: + ret = -EINVAL; + goto err; + } + + memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6); + cmd.args[4] = delivery_system | bandwidth; + cmd.wlen = 6; + cmd.rlen = 1; + ret = si2157_cmd_execute(s, &cmd); + if (ret) + goto err; + /* set frequency */ memcpy(cmd.args, "\x41\x00\x00\x00\x00\x00\x00\x00", 8); cmd.args[4] = (c->frequency >> 0) & 0xff; |