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[media] adv7183: fix querystd
If no signal is detected, return V4L2_STD_UNKNOWN. Otherwise AND the standard with the detected standards. Note that the v4l2 core initializes the std with tvnorms before calling the querystd ioctl. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: Scott Jiang <scott.jiang.linux@gmail.com> Acked-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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1 changed files with 8 additions and 8 deletions
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@ -374,28 +374,28 @@ static int adv7183_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
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reg = adv7183_read(sd, ADV7183_STATUS_1);
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switch ((reg >> 0x4) & 0x7) {
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case 0:
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*std = V4L2_STD_NTSC;
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*std &= V4L2_STD_NTSC;
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break;
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case 1:
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*std = V4L2_STD_NTSC_443;
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*std &= V4L2_STD_NTSC_443;
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break;
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case 2:
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*std = V4L2_STD_PAL_M;
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*std &= V4L2_STD_PAL_M;
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break;
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case 3:
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*std = V4L2_STD_PAL_60;
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*std &= V4L2_STD_PAL_60;
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break;
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case 4:
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*std = V4L2_STD_PAL;
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*std &= V4L2_STD_PAL;
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break;
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case 5:
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*std = V4L2_STD_SECAM;
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*std &= V4L2_STD_SECAM;
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break;
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case 6:
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*std = V4L2_STD_PAL_Nc;
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*std &= V4L2_STD_PAL_Nc;
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break;
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case 7:
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*std = V4L2_STD_SECAM;
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*std &= V4L2_STD_SECAM;
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break;
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default:
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*std = V4L2_STD_UNKNOWN;
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