drm/exynos: mixer: Fix color format setting

Fix color format decision based on height(pixels).

According to CEA-861-E:
"High Definition (HD) - A CE video format that, inclusively, has between
720 to 1080 active vertical lines (Vactive) lines per video frame."

Tested on Odroid-U3 with Exynos 4412 CPU, kernel next-20181128
using modetest.

Signed-off-by: Christoph Manszewski <c.manszewski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

1 files changed, 2 insertions, 8 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 5a47af8e76c0..9cdae10fd36d 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -384,14 +384,9 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
 {
         u32 val;
 
-        switch (height) {
-        case 480:
-        case 576:
+        if (height < 720) {
                 val = MXR_CFG_RGB601_0_255;
-                break;
-        case 720:
-        case 1080:
-        default:
+        } else {
                 val = MXR_CFG_RGB709_16_235;
                 /* Configure the BT.709 CSC matrix for full range RGB. */
                 mixer_reg_write(ctx, MXR_CM_COEFF_Y,
@@ -401,7 +396,6 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
                         MXR_CSC_CT(-0.102, -0.338,  0.440));
                 mixer_reg_write(ctx, MXR_CM_COEFF_CR,
                         MXR_CSC_CT( 0.440, -0.399, -0.040));
-                break;
         }
 
         mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);