diff options
| author | Prashant Laddha <prladdha@cisco.com> | 2015-04-22 19:32:37 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-05-01 12:15:38 +0200 |
| commit | 9c3f205252f8ae2af9794d68bcbfc49fb0812ccf (patch) | |
| tree | 666028cb369ccd6d0db108b855fef01791a9fa2d /drivers/media/v4l2-core/v4l2-dv-timings.c | |
| parent | [media] v4l2-dv-timings: add sanity checks in cvt,gtf calculations (diff) | |
| download | linux-9c3f205252f8ae2af9794d68bcbfc49fb0812ccf.tar.xz linux-9c3f205252f8ae2af9794d68bcbfc49fb0812ccf.zip | |
[media] v4l2-dv-timings: replace hsync magic number with a macro
This change will not change timing calculation. In CVT generator
spreadsheet the nominal value of hsync (as a percentage of line)
is 8 percent.
Cc: Martin Bugge <marbugge@cisco.com>
Signed-off-by: Prashant Laddha <prladdha@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-dv-timings.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-dv-timings.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/media/v4l2-core/v4l2-dv-timings.c b/drivers/media/v4l2-core/v4l2-dv-timings.c index 4e09792038ed..37f0d6f89878 100644 --- a/drivers/media/v4l2-core/v4l2-dv-timings.c +++ b/drivers/media/v4l2-core/v4l2-dv-timings.c @@ -313,6 +313,7 @@ EXPORT_SYMBOL_GPL(v4l2_print_dv_timings); #define CVT_MIN_V_BPORCH 7 /* lines */ #define CVT_MIN_V_PORCH_RND 3 /* lines */ #define CVT_MIN_VSYNC_BP 550 /* min time of vsync + back porch (us) */ +#define CVT_HSYNC_PERCENT 8 /* nominal hsync as percentage of line */ /* Normal blanking for CVT uses GTF to calculate horizontal blanking */ #define CVT_CELL_GRAN 8 /* character cell granularity */ @@ -442,7 +443,7 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, h_bp = h_blank / 2; frame_width = image_width + h_blank; - hsync = frame_width * 8 / 100; + hsync = frame_width * CVT_HSYNC_PERCENT / 100; hsync = (hsync / CVT_CELL_GRAN) * CVT_CELL_GRAN; h_fp = h_blank - hsync - h_bp; } |