Re: [PATCH 0/8] drm + usb-type-c: Add support for out-of-band hotplug notification (v4)

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Fri, Jun 04, 2021 at 09:48:32PM +0200, Hans de Goede wrote:
> Here is v3 of my patchset making DP over Type-C work on devices where the
> Type-C controller does not drive the HPD pin on the GPU, but instead
> we need to forward HPD events from the Type-C controller to the DRM driver.
> 
> Changes in v4:
> - Rebase on top of latest drm-tip
> - Add forward declaration for struct fwnode_handle to drm_crtc_internal.h
>   (fixes warning reported by kernel test robot <lkp@intel.com>)
> - Add Heikki's Reviewed-by to patch 7 & 8
> - Add Heikki's Tested-by to the series
> 
> Changes in v3:
> - Base on top of latest drm-tip, which should fix the CI being unable to
>   apply (and thus to test) the patches
> - Make intel_acpi_assign_connector_fwnodes() take a ref on the fwnode
>   it stores in connector->fwnode and have drm_connector_cleanup() put
>   this reference
> - Drop data argument from drm_connector_oob_hotplug_event()
> - Make the Type-C DP altmode code only call drm_connector_oob_hotplug_event()
>   when the HPD bit in the status vdo changes
> - Drop the platform/x86/intel_cht_int33fe: Correct "displayport" fwnode
>   reference patch, this will be merged independently through the pdx86 tree
> 
> Changes in v2:
> - Replace the bogus "drm/connector: Make the drm_sysfs connector->kdev
>   device hold a reference to the connector" patch with:
>   "drm/connector: Give connector sysfs devices there own device_type"
>   the new patch is a dep for patch 2/9 see the patches
> 
> - Stop using a class-dev-iter, instead at a global connector list
>   to drm_connector.c and use that to find the connector by the fwnode,
>   similar to how we already do this in drm_panel.c and drm_bridge.c
> 
> - Make drm_connector_oob_hotplug_event() take a fwnode pointer as
>   argument, rather then a drm_connector pointer and let it do the
>   lookup itself. This allows making drm_connector_find_by_fwnode() a
>   drm-internal function and avoids code outside the drm subsystem
>   potentially holding on the a drm_connector reference for a longer
>   period.
> 
> This series not only touches drm subsys files but it also touches
> drivers/usb/typec/altmodes/typec_displayport.c, that file usually
> does not see a whole lot of changes. So I believe it would be best
> to just merge the entire series through drm-misc, Assuming we can
> get an ack from Greg for merging the typec_displayport.c changes
> this way.

No objection from me, I've replied with reviewed-by for those USB
patches now.

thanks,
greg k-h