[media] saa7115: improve querystd handling for the saa7115
The saa7115 has better PAL/NTSC detection, so it can detect PAL even though the chip is currently set up for NTSC. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Родитель
a0fc58868b
Коммит
c875dee536
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@ -1360,22 +1360,12 @@ static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
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*/
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reg1f = saa711x_read(sd, R_1F_STATUS_BYTE_2_VD_DEC);
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v4l2_dbg(1, debug, sd, "Status byte 2 (0x1f)=0x%02x\n", reg1f);
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/* horizontal/vertical not locked */
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if (reg1f & 0x40)
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goto ret;
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if (reg1f & 0x20)
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*std &= V4L2_STD_525_60;
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else
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*std &= V4L2_STD_625_50;
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if (state->ident != V4L2_IDENT_SAA7115)
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goto ret;
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if (state->ident == V4L2_IDENT_SAA7115) {
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reg1e = saa711x_read(sd, R_1E_STATUS_BYTE_1_VD_DEC);
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v4l2_dbg(1, debug, sd, "Status byte 1 (0x1e)=0x%02x\n", reg1e);
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switch (reg1e & 0x03) {
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case 1:
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*std &= V4L2_STD_NTSC;
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@ -1396,8 +1386,18 @@ static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
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/* Can't detect anything */
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break;
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}
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}
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v4l2_dbg(1, debug, sd, "Status byte 1 (0x1e)=0x%02x\n", reg1e);
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v4l2_dbg(1, debug, sd, "Status byte 2 (0x1f)=0x%02x\n", reg1f);
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/* horizontal/vertical not locked */
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if (reg1f & 0x40)
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goto ret;
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if (reg1f & 0x20)
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*std &= V4L2_STD_525_60;
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else
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*std &= V4L2_STD_625_50;
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ret:
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v4l2_dbg(1, debug, sd, "detected std mask = %08Lx\n", *std);
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