From 276dfc4b99a65c3b05e37a267e5e36e0e8381b7a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 21 Jul 2014 14:55:05 -0300 Subject: [PATCH] [media] mb86a20s: fix ISDB-T mode handling The driver was reporting an incorrect mode, when mode 2 is selected. While testing it, noticed that neither mode 1 or guard interval 1/32 is supported by this device. Document it, and ensure that it will report _AUTO when it doesn't lock, in order to not report a wrong detection to userspace. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/mb86a20s.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c index 2f458bb..79bc1c9 100644 --- a/drivers/media/dvb-frontends/mb86a20s.c +++ b/drivers/media/dvb-frontends/mb86a20s.c @@ -721,11 +721,10 @@ static int mb86a20s_get_frontend(struct dvb_frontend *fe) rc = mb86a20s_readreg(state, 0x07); if (rc < 0) return rc; + c->transmission_mode = TRANSMISSION_MODE_AUTO; if ((rc & 0x60) == 0x20) { - switch (rc & 0x0c >> 2) { - case 0: - c->transmission_mode = TRANSMISSION_MODE_2K; - break; + /* Only modes 2 and 3 are supported */ + switch ((rc >> 2) & 0x03) { case 1: c->transmission_mode = TRANSMISSION_MODE_4K; break; @@ -734,7 +733,9 @@ static int mb86a20s_get_frontend(struct dvb_frontend *fe) break; } } + c->guard_interval = GUARD_INTERVAL_AUTO; if (!(rc & 0x10)) { + /* Guard interval 1/32 is not supported */ switch (rc & 0x3) { case 0: c->guard_interval = GUARD_INTERVAL_1_4; -- 2.7.4