linux-kernel - Re: [PATCH v2 05/14] drm/bridge: ti-sn65dsi86: Move MIPI detach() / unregister() to detach()

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Date:   Wed, 31 Mar 2021 11:53:48 +0200
From:   Andrzej Hajda <a.hajda@...sung.com>
To:     Douglas Anderson <dianders@...omium.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Sam Ravnborg <sam@...nborg.org>
Cc:     robdclark@...omium.org, dri-devel@...ts.freedesktop.org,
        David Airlie <airlied@...ux.ie>, linux-arm-msm@...r.kernel.org,
        Steev Klimaszewski <steev@...i.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Stanislav Lisovskiy <stanislav.lisovskiy@...el.com>,
        Robert Foss <robert.foss@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 05/14] drm/bridge: ti-sn65dsi86: Move MIPI detach() /
 unregister() to detach()


W dniu 30.03.2021 o 04:53, Douglas Anderson pisze:
> The register() / attach() for MIPI happen in the bridge's
> attach(). That means that the inverse belongs in the bridge's
> detach().


As I commented in previous patch, it would be better to fix mipi/bridge 
registration order in host and this driver.

Have you considered this?


Regards

Andrzej

>
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
>
> (no changes since v1)
>
>   drivers/gpu/drm/bridge/ti-sn65dsi86.c | 15 +++++++++------
>   1 file changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> index c006678c9921..e8e523b3a16b 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> @@ -437,7 +437,15 @@ static int ti_sn_bridge_attach(struct drm_bridge *bridge,
>   
>   static void ti_sn_bridge_detach(struct drm_bridge *bridge)
>   {
> -	drm_dp_aux_unregister(&bridge_to_ti_sn_bridge(bridge)->aux);
> +	struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge);
> +
> +
> +	if (pdata->dsi) {
> +		mipi_dsi_detach(pdata->dsi);
> +		mipi_dsi_device_unregister(pdata->dsi);
> +	}
> +
> +	drm_dp_aux_unregister(&pdata->aux);
>   }
>   
>   static void ti_sn_bridge_disable(struct drm_bridge *bridge)
> @@ -1315,11 +1323,6 @@ static int ti_sn_bridge_remove(struct i2c_client *client)
>   	if (!pdata)
>   		return -EINVAL;
>   
> -	if (pdata->dsi) {
> -		mipi_dsi_detach(pdata->dsi);
> -		mipi_dsi_device_unregister(pdata->dsi);
> -	}
> -
>   	kfree(pdata->edid);
>   
>   	ti_sn_debugfs_remove(pdata);