[PATCH v2 0/7] drm/bridge_connector: perform HPD enablement automatically

[Tomi Valkeinen]

On 24/10/2022 18:39, Dmitry Baryshkov wrote:
>  From all the drivers using drm_bridge_connector only iMX/dcss and OMAP
> DRM driver do a proper work of calling
> drm_bridge_connector_en/disable_hpd() in right places. Rather than
> teaching each and every driver how to properly handle
> drm_bridge_connector's HPD, make that automatic.
> 
> Add two additional drm_connector helper funcs: enable_hpd() and
> disable_hpd(). Make drm_kms_helper_poll_* functions call them (as this
> is the time where the drm_bridge_connector's functions are called by the
> drivers too).
> 
> Changes since v1:
>   - Rebased on top of v6.1-rc1
>   - Removed the drm_bridge_connector_enable_hpd() from
>     drm_bridge_connector_init()
>   - Removed extra underscore prefix from
>     drm_bridge_connector_en/disable_hpd() helpers
> 
> Dmitry Baryshkov (7):
>    drm/poll-helper: merge drm_kms_helper_poll_disable() and _fini()
>    drm/probe-helper: enable and disable HPD on connectors
>    drm/bridge_connector: rely on drm_kms_helper_poll_* for HPD enablement
>    drm/imx/dcss: stop using drm_bridge_connector_en/disable_hpd()
>    drm/msm/hdmi: stop using drm_bridge_connector_en/disable_hpd()
>    drm/omap: stop using drm_bridge_connector_en/disable_hpd()
>    drm/bridge_connector: drop drm_bridge_connector_en/disable_hpd()
> 
>   drivers/gpu/drm/drm_bridge_connector.c   | 27 +++-------------
>   drivers/gpu/drm/drm_probe_helper.c       | 40 ++++++++++++++++++-----
>   drivers/gpu/drm/imx/dcss/dcss-dev.c      |  4 ---
>   drivers/gpu/drm/imx/dcss/dcss-kms.c      |  2 --
>   drivers/gpu/drm/msm/hdmi/hdmi.c          |  2 --
>   drivers/gpu/drm/omapdrm/omap_drv.c       | 41 ------------------------
>   include/drm/drm_bridge_connector.h       |  2 --
>   include/drm/drm_modeset_helper_vtables.h | 22 +++++++++++++
>   8 files changed, 59 insertions(+), 81 deletions(-)
> 

For the series:

Reviewed-by: Tomi Valkeinen <tomi.valkeinen at ideasonboard.com>

This fixes the issue (WARN for "Hot plug detection already enabled") 
introduced by 09077bc3116581f4d1cb961ec359ad56586e370b, which you revert 
in the third patch. You could mention this, maybe as a fixes tag and a 
mention in the description.

  Tomi