Re: [PATCH v3 3/9] drm/exynos: enable out_bridge in exynos_dsi_enable()

[Inki Dae]

Hi,

2018ë 06ì 19ì 17:19ì Maciej Purski ì(ê) ì ê:
> As the out bridge will not be enabled directly by the framework,
> it should be enabled by DSI. Exynos_dsi_enable() should handle a case,
> when there is an out_bridge connected as a DSI peripheral.
> 
> Signed-off-by: Maciej Purski <m.purski@xxxxxxxxxxx>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_dsi.c | 34 +++++++++++++++++++++------------
>  1 file changed, 22 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> index c0408c0..8aa7ace 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> @@ -1386,25 +1386,33 @@ static void exynos_dsi_enable(struct drm_encoder *encoder)
>  
>  	dsi->state |= DSIM_STATE_ENABLED;
>  
> -	ret = drm_panel_prepare(dsi->panel);
> -	if (ret < 0) {
> -		dsi->state &= ~DSIM_STATE_ENABLED;
> -		pm_runtime_put_sync(dsi->dev);
> -		return;
> +	if (dsi->panel) {
> +		ret = drm_panel_prepare(dsi->panel);
> +		if (ret < 0) {
> +			dsi->state &= ~DSIM_STATE_ENABLED;

Why did you remove pm_runtime_put_sync call?

> +			return;
> +		}
>  	}
>  
> +	if (dsi->out_bridge)
> +		drm_bridge_pre_enable(dsi->out_bridge);
> +
>  	exynos_dsi_set_display_mode(dsi);
>  	exynos_dsi_set_display_enable(dsi, true);
>  
> -	ret = drm_panel_enable(dsi->panel);
> -	if (ret < 0) {
> -		dsi->state &= ~DSIM_STATE_ENABLED;
> -		exynos_dsi_set_display_enable(dsi, false);
> -		drm_panel_unprepare(dsi->panel);
> -		pm_runtime_put_sync(dsi->dev);
> -		return;
> +	if (dsi->panel) {
> +		ret = drm_panel_enable(dsi->panel);
> +		if (ret < 0) {
> +			dsi->state &= ~DSIM_STATE_ENABLED;
> +			exynos_dsi_set_display_enable(dsi, false);
> +			drm_panel_unprepare(dsi->panel);

Ditto.

Thanks,
Inki Dae

> +			return;
> +		}
>  	}
>  
> +	if (dsi->out_bridge)
> +		drm_bridge_enable(dsi->out_bridge);
> +
>  	dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE;
>  }
>  
> @@ -1418,8 +1426,10 @@ static void exynos_dsi_disable(struct drm_encoder *encoder)
>  	dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE;
>  
>  	drm_panel_disable(dsi->panel);
> +	drm_bridge_disable(dsi->out_bridge);
>  	exynos_dsi_set_display_enable(dsi, false);
>  	drm_panel_unprepare(dsi->panel);
> +	drm_bridge_post_disable(dsi->out_bridge);
>  
>  	dsi->state &= ~DSIM_STATE_ENABLED;
>  
>