FIR values can never be zero as per TRM, and the current code writes zero when scaling is not used. It was not causing any problem as scaling was disabled when zero was written. Its still safer to not write zero to it in any case. Now we configure correct FIR values even when scaling is not used (i.e. set FIR to 1024 when scaling is not used), but the scaling enable bits are still kept off if the scaling is not needed. Signed-off-by: Amber Jain <amber@xxxxxx> --- Changes from v1: - updated commit message to make it more descriptive. drivers/video/omap2/dss/dispc.c | 15 ++++----------- 1 files changed, 4 insertions(+), 11 deletions(-) diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index 79c1c0a..fd8f68e 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -1128,15 +1128,8 @@ static void _dispc_set_scaling(enum omap_plane plane, _dispc_set_scale_coef(plane, hscaleup, vscaleup, five_taps); - if (!orig_width || orig_width == out_width) - fir_hinc = 0; - else - fir_hinc = 1024 * orig_width / out_width; - - if (!orig_height || orig_height == out_height) - fir_vinc = 0; - else - fir_vinc = 1024 * orig_height / out_height; + fir_hinc = 1024 * orig_width / out_width; + fir_vinc = 1024 * orig_height / out_height; _dispc_set_fir(plane, fir_hinc, fir_vinc); @@ -1144,8 +1137,8 @@ static void _dispc_set_scaling(enum omap_plane plane, /* RESIZEENABLE and VERTICALTAPS */ l &= ~((0x3 << 5) | (0x1 << 21)); - l |= fir_hinc ? (1 << 5) : 0; - l |= fir_vinc ? (1 << 6) : 0; + l |= (orig_width != out_width) ? (1 << 5) : 0; + l |= (orig_height != out_height) ? (1 << 6) : 0; l |= five_taps ? (1 << 21) : 0; /* VRESIZECONF and HRESIZECONF */ -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
