[PATCH 3/3] drm/exynos/decon5433: fix trigger configuration

[Inki Dae]

Hi Andrzej,

2016년 04월 29일 22:42에 Andrzej Hajda 이(가) 쓴 글:
> It seems trigger cannot be configured too early, otherwise it does not work in
> case of panel. The patch fixes also trigger flag logic, previously HW-TRIGGER
> flag was cleared in case of panel - as a result panel used always software

Andrzej, sorry but I can't understand what above two lines mean. Can you give me more details?

> trigger.
> 
> Signed-off-by: Andrzej Hajda <a.hajda at samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> index 7b4f699..9ae913b 100644
> --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> @@ -151,11 +151,13 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
>  	val = CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F;
>  	writel(val, ctx->addr + DECON_CMU);
>  
> +	if (ctx->out_type & (IFTYPE_I80 | I80_HW_TRG))
> +		decon_setup_trigger(ctx);

Shouldn't it be configured in case of using SW trigger mode also?

Thanks,
Inki Dae

> +
>  	/* lcd on and use command if */
>  	val = VIDOUT_LCD_ON;
>  	if (ctx->out_type & IFTYPE_I80) {
>  		val |= VIDOUT_COMMAND_IF;
> -		decon_setup_trigger(ctx);
>  	} else {
>  		val |= VIDOUT_RGB_IF;
>  	}
> @@ -380,9 +382,6 @@ static void decon_swreset(struct decon_context *ctx)
>  	writel(VIDCON1_VCLK_RUN_VDEN_DISABLE, ctx->addr + DECON_VIDCON1);
>  	writel(CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F | CRCCTRL_CRCCLKEN,
>  	       ctx->addr + DECON_CRCCTRL);
> -
> -	if (ctx->out_type & IFTYPE_I80)
> -		decon_setup_trigger(ctx);
>  }
>  
>  static void decon_enable(struct exynos_drm_crtc *crtc)
> @@ -652,9 +651,8 @@ static int exynos5433_decon_probe(struct platform_device *pdev)
>  
>  	if (ctx->out_type & IFTYPE_HDMI) {
>  		ctx->first_win = 1;
> -		ctx->out_type = IFTYPE_I80;
>  	} else if (of_get_child_by_name(dev->of_node, "i80-if-timings")) {
> -		ctx->out_type = IFTYPE_I80;
> +		ctx->out_type |= IFTYPE_I80;
>  	}
>  
>  	for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
>