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drm/exynos/decon5433: signal frame done interrupt at front porch

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DECON in case of video mode generates interrupt by default at start
of vertical back porch. As this interrupt is used to generate VBLANK
events more optimal point is start of vertical front porch.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Andrzej Hajda 2017-03-14 09:27:58 +01:00 committed by Inki Dae
parent 73488331eb
commit f3cce673e1
2 changed files with 5 additions and 1 deletions
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2
drivers/gpu/drm/exynos/exynos5433_drm_decon.c
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@ -105,7 +105,7 @@ static int decon_enable_vblank(struct exynos_drm_crtc *crtc)
if (ctx->out_type & IFTYPE_I80)
val |= VIDINTCON0_FRAMEDONE;
else
val |= VIDINTCON0_INTFRMEN;
val |= VIDINTCON0_INTFRMEN | VIDINTCON0_FRAMESEL_FP;
writel(val, ctx->addr + DECON_VIDINTCON0);
}

4
include/video/exynos5433_decon.h
View File

@ -127,6 +127,10 @@
/* VIDINTCON0 */
#define VIDINTCON0_FRAMEDONE (1 << 17)
#define VIDINTCON0_FRAMESEL_BP (0 << 15)
#define VIDINTCON0_FRAMESEL_VS (1 << 15)
#define VIDINTCON0_FRAMESEL_AC (2 << 15)
#define VIDINTCON0_FRAMESEL_FP (3 << 15)
#define VIDINTCON0_INTFRMEN (1 << 12)
#define VIDINTCON0_INTEN (1 << 0)