From: Olli Salonen <olli.salo...@iki.fi>
Tell used TV standard and bandwidth for tuner firmware.
Signed-off-by: Olli Salonen <olli.salo...@iki.fi>
Reviewed-by: Antti Palosaari <cr...@iki.fi>
Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
drivers/media/tuners/si2157.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
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;
--
1.9.3
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