V4L2_STD_A2
#define V4L2_STD_AUDIO (V4L2_STD_A2 | \
#define V4L2_STD_PAL_DK_A2 (V4L2_STD_PAL_DK | V4L2_STD_A2)
return V4L2_STD_A2;
params->std |= V4L2_STD_A2;
params->std |= V4L2_STD_A2;
params->std = V4L2_STD_SECAM_DK | V4L2_STD_A2;