Re: [PATCH 1/3] drm: mediatek: fix unbind functions

CK Hu
2019-05-29T08:28:16Z

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