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[media] saa7115: allow input standard autodetection for more chips

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Autodetect input's standard using field frequency detection
feature (FIDT in status byte at 0x1F) of the chips saa7111/
saa7111a/saa7113/saa7114/saa7118.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Anatolij Gustschin 2010-12-22 17:31:58 -03:00 committed by Mauro Carvalho Chehab
parent 641d21167f
commit f9d7d78784
1 changed files with 10 additions and 1 deletions
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11
drivers/media/video/saa7115.c
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@ -1348,8 +1348,17 @@ static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
int reg1e;
*std = V4L2_STD_ALL;
if (state->ident != V4L2_IDENT_SAA7115)
if (state->ident != V4L2_IDENT_SAA7115) {
int reg1f = saa711x_read(sd, R_1F_STATUS_BYTE_2_VD_DEC);
if (reg1f & 0x20)
*std = V4L2_STD_525_60;
else
*std = V4L2_STD_625_50;
return 0;
}
reg1e = saa711x_read(sd, R_1E_STATUS_BYTE_1_VD_DEC);
switch (reg1e & 0x03) {