Re: [PATCH v3 05/12] drm/bridge: ti-sn65dsi86: Move drm_panel_unprepare() to post_disable()

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Doug,

Thank you for the patch.

On Fri, Apr 02, 2021 at 03:28:39PM -0700, Douglas Anderson wrote:
> We prepared the panel in pre_enable() so we should unprepare it in
> post_disable() to match.
> 
> This becomes important once we start using pre_enable() and
> post_disable() to make sure things are powered on (and then off again)
> when reading the EDID.
> 
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
> 
> (no changes since v1)
> 
>  drivers/gpu/drm/bridge/ti-sn65dsi86.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> index c006678c9921..e30460002c48 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> @@ -452,8 +452,6 @@ static void ti_sn_bridge_disable(struct drm_bridge *bridge)
>  	regmap_write(pdata->regmap, SN_ML_TX_MODE_REG, 0);
>  	/* disable DP PLL */
>  	regmap_write(pdata->regmap, SN_PLL_ENABLE_REG, 0);
> -
> -	drm_panel_unprepare(pdata->panel);
>  }
>  
>  static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn_bridge *pdata)
> @@ -869,6 +867,8 @@ static void ti_sn_bridge_post_disable(struct drm_bridge *bridge)
>  {
>  	struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge);
>  
> +	drm_panel_unprepare(pdata->panel);
> +
>  	clk_disable_unprepare(pdata->refclk);
>  
>  	pm_runtime_put_sync(pdata->dev);

-- 
Regards,

Laurent Pinchart