[Intel-gfx] [PATCH 2/2] drm/i915/dp: use opregion mailbox #5 EDID for eDP, if available

[Shankar, Uma]

> -----Original Message-----
> From: Jani Nikula <jani.nikula at intel.com>
> Sent: Friday, August 28, 2020 11:50 AM
> To: intel-gfx at lists.freedesktop.org
> Cc: Nikula, Jani <jani.nikula at intel.com>; Shankar, Uma
> <uma.shankar at intel.com>
> Subject: [PATCH 2/2] drm/i915/dp: use opregion mailbox #5 EDID for eDP, if
> available
> 
> If a panel's EDID is broken, there may be an override EDID set in the ACPI
> OpRegion mailbox #5. Use it if available.

Looks Good to me.
Reviewed-by: Uma Shankar <uma.shankar at intel.com>

> Cc: Uma Shankar <uma.shankar at intel.com>
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index c57ac83bf563..d1307be196a2 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -8114,6 +8114,9 @@ static bool intel_edp_init_connector(struct intel_dp
> *intel_dp,
>  		goto out_vdd_off;
>  	}
> 
> +	/* Set up override EDID, if any, from ACPI OpRegion */
> +	intel_opregion_edid_override(intel_connector);
> +
>  	mutex_lock(&dev->mode_config.mutex);
>  	edid = drm_get_edid(connector, &intel_dp->aux.ddc);
>  	if (edid) {
> --
> 2.20.1