diff options
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 58c5ef5..b656f9b 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; |
