Changed the rounding calculation for hblank and hsync to match it to equations in standards. Currently hblank and hsync are rounded down. hblank needs to be rounded to nearest multiple of twice the cell granularity. hsync needs to be rounded to nearest multiple of cell granularity. Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx> Cc: Martin Bugge <marbugge@xxxxxxxxx> Signed-off-by: Prashant Laddha <prladdha@xxxxxxxxx> --- drivers/media/v4l2-core/v4l2-dv-timings.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-dv-timings.c b/drivers/media/v4l2-core/v4l2-dv-timings.c index 5e114ee..4b8ec4e 100644 --- a/drivers/media/v4l2-core/v4l2-dv-timings.c +++ b/drivers/media/v4l2-core/v4l2-dv-timings.c @@ -570,14 +570,15 @@ bool v4l2_detect_gtf(unsigned frame_height, (hfreq * (100 - GTF_S_C_PRIME) + GTF_S_M_PRIME * 1000) / 2) / (hfreq * (100 - GTF_S_C_PRIME) + GTF_S_M_PRIME * 1000); - h_blank = h_blank - h_blank % (2 * GTF_CELL_GRAN); + h_blank = ((h_blank + GTF_CELL_GRAN) / (2 * GTF_CELL_GRAN)) * + (2 * GTF_CELL_GRAN); frame_width = image_width + h_blank; pix_clk = (image_width + h_blank) * hfreq; pix_clk = pix_clk / GTF_PXL_CLK_GRAN * GTF_PXL_CLK_GRAN; hsync = (frame_width * 8 + 50) / 100; - hsync = hsync - hsync % GTF_CELL_GRAN; + hsync = ((hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN) * GTF_CELL_GRAN; h_fp = h_blank / 2 - hsync; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
