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[media] mb86a20s: fix ISDB-T mode handling

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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 <m.chehab@samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2014-07-21 14:55:05 -03:00
parent 4423a2ba80
commit 276dfc4b99
1 changed files with 5 additions and 4 deletions
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9
drivers/media/dvb-frontends/mb86a20s.c
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@ -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;