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| author |   Lajos Molnar <lajos@ti.com> | 2012-02-21 19:36:31 +0530 |
|---|---|---|
| committer |   Tomi Valkeinen <tomi.valkeinen@ti.com> | 2012-03-06 14:08:23 +0200 |
| commit | c0c1cfcb577d61ec55e209bc5f869d3d80a8f371 (patch) | |
| tree | ae9fd192d44637645723430c777a12d21c6252f7 /drivers/video/omap2 | |
| parent | OMAPDSS: DISPC: Fix OMAP4 supported color formats (diff) | |
| download | linux-dev-c0c1cfcb577d61ec55e209bc5f869d3d80a8f371.tar.xz linux-dev-c0c1cfcb577d61ec55e209bc5f869d3d80a8f371.zip | |
OMAPDSS: DISPC: Fix FIR coefficients
coef3_M8 had an incorrect phase with 50% more intensity. This resulted in
banding on slightly down/upscaled images. Fixed a rounding error in coef5_M9.
Also removed ARRAY_LEN macro as ARRAY_SIZE is the standard linux one.
Signed-off-by: Lajos Molnar <lajos@ti.com>
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video/omap2')
| -rw-r--r-- | drivers/video/omap2/dss/dispc_coefs.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/video/omap2/dss/dispc_coefs.c b/drivers/video/omap2/dss/dispc_coefs.c index 069bccbb3f12..038c15b04215 100644 --- a/drivers/video/omap2/dss/dispc_coefs.c +++ b/drivers/video/omap2/dss/dispc_coefs.c @@ -19,14 +19,13 @@ #include <linux/kernel.h> #include <video/omapdss.h> -#include "dispc.h" -#define ARRAY_LEN(array) (sizeof(array) / sizeof(array[0])) +#include "dispc.h" static const struct dispc_coef coef3_M8[8] = { { 0, 0, 128, 0, 0 }, { 0, -4, 123, 9, 0 }, - { 0, -4, 108, 87, 0 }, + { 0, -4, 108, 24, 0 }, { 0, -2, 87, 43, 0 }, { 0, 64, 64, 0, 0 }, { 0, 43, 87, -2, 0 }, @@ -168,7 +167,7 @@ static const struct dispc_coef coef5_M8[8] = { static const struct dispc_coef coef5_M9[8] = { { -3, 10, 114, 10, -3 }, - { -6, 24, 110, 0, -1 }, + { -6, 24, 111, 0, -1 }, { -8, 40, 103, -7, 0 }, { -11, 58, 91, -11, 1 }, { 0, -12, 76, 76, -12 }, @@ -319,7 +318,7 @@ const struct dispc_coef *dispc_ovl_get_scale_coef(int inc, int five_taps) }; inc /= 128; - for (i = 0; i < ARRAY_LEN(coefs); ++i) + for (i = 0; i < ARRAY_SIZE(coefs); ++i) if (inc >= coefs[i].Mmin && inc <= coefs[i].Mmax) return five_taps ? coefs[i].coef_5 : coefs[i].coef_3; return NULL; |