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drm/exynos/decon5433: always do sw-trigger when vblanks enabled

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When vblanks are enabled userspace and/or kernel can expect vblank
interrupt at declared period of time. To generate vblank interrupt
image transfer must be triggered. This patch fixes vblank timeouts
in case of sw-trigger mode.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Andrzej Hajda 2017-04-05 09:28:29 +02:00 committed by Inki Dae
parent 2a6e4cd53c
commit 366dcad34c
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/exynos/exynos5433_drm_decon.c
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@ -49,6 +49,7 @@ static const char * const decon_clks_name[] = {
enum decon_flag_bits {
BIT_CLKS_ENABLED,
BIT_IRQS_ENABLED,
BIT_WIN_UPDATED,
BIT_SUSPENDED
};
@ -104,6 +105,7 @@ static int decon_enable_vblank(struct exynos_drm_crtc *crtc)
val |= VIDINTCON0_INTFRMEN | VIDINTCON0_FRAMESEL_FP;
writel(val, ctx->addr + DECON_VIDINTCON0);
set_bit(BIT_IRQS_ENABLED, &ctx->flags);
return 0;
}
@ -112,6 +114,7 @@ static void decon_disable_vblank(struct exynos_drm_crtc *crtc)
{
struct decon_context *ctx = crtc->ctx;
clear_bit(BIT_IRQS_ENABLED, &ctx->flags);
if (test_bit(BIT_SUSPENDED, &ctx->flags))
return;
@ -518,7 +521,8 @@ static void decon_te_irq_handler(struct exynos_drm_crtc *crtc)
(ctx->out_type & I80_HW_TRG))
return;
if (test_and_clear_bit(BIT_WIN_UPDATED, &ctx->flags))
if (test_and_clear_bit(BIT_WIN_UPDATED, &ctx->flags) ||
test_bit(BIT_IRQS_ENABLED, &ctx->flags))
decon_set_bits(ctx, DECON_TRIGCON, TRIGCON_SWTRIGCMD, ~0);
}