From mboxrd@z Thu Jan  1 00:00:00 1970
From: CK Hu <ck.hu@mediatek.com>
Subject: Re: [PATCH 1/3] drm: mediatek: fix unbind functions
Date: Wed, 29 May 2019 16:28:16 +0800
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To: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <linux-arm-kernel@lists.infradead.org>, Philipp Zabel <p.zabel@pengutronix.de>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, Matthias Brugger <matthias.bgg@gmail.com>, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, lkml <linux-kernel@vger.kernel.org>
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Hi, Hsin-Yi:

On Wed, 2019-05-29 at 15:06 +0800, Hsin-Yi Wang wrote:
> On Wed, May 29, 2019 at 9:35 AM CK Hu <ck.hu@mediatek.com> wrote:
> 
> >
> > I think mtk_dsi_destroy_conn_enc() has much thing to do and I would like
> > you to do more. You could refer to [2] for complete implementation.
> >
> > [2]
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/exynos/exynos_drm_dsi.c?h=v5.2-rc2#n1575
> >
> Hi CK,
> 
> Since drm_encoder_cleanup() would already call drm_bridge_detach() to
> detach bridge, I think we only need to handle panel case here.
> We don't need to call mtk_dsi_encoder_disable() since
> mtk_output_dsi_disable() is called in mtk_dsi_remove() and
> dsi->enabled will be set to false. Calling second time will just
> returns immediately.
> So, besides setting
> 
> dsi->panel = NULL;
> dsi->conn.status = connector_status_disconnected;

Sorry, I think your original patch is good enough, and you need not to
do the besides setting.

Regards,
CK

> 
> are there other things we need to do here?
> 
> Original code doesn't have drm_kms_helper_hotplug_event(), and I'm not
> sure if mtk dsi would need this.
> Also, mtk_dsi_stop() would also stop irq.
> 
> Thanks