Re: [PATCH v3 39/48] drm/i915/bigjoiner: Mode validation with uncompressed pipe joiner

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> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Matt
> Roper
> Sent: Friday, May 7, 2021 7:28 PM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject:  [PATCH v3 39/48] drm/i915/bigjoiner: Mode validation
> with uncompressed pipe joiner
> 
> From: Animesh Manna <animesh.manna@xxxxxxxxx>
> 
> No need for checking dsc flag for uncompressed pipe joiner mode validation.
> 
> Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> Signed-off-by: Animesh Manna <animesh.manna@xxxxxxxxx>
> Signed-off-by: Clinton Taylor <Clinton.A.Taylor@xxxxxxxxx>
> Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>

Reviewed-by: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index b9b8a0b9889a..92d4c5ab32d7 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -819,8 +819,11 @@ intel_dp_mode_valid(struct drm_connector
> *connector,
>  		dsc = dsc_max_output_bpp && dsc_slice_count;
>  	}
> 
> -	/* big joiner configuration needs DSC */
> -	if (bigjoiner && !dsc)
> +	/*
> +	 * Big joiner configuration needs DSC for TGL which is not true for
> +	 * XE_LPD where uncompressed joiner is supported.
> +	 */
> +	if (DISPLAY_VER(dev_priv) < 13 && bigjoiner && !dsc)
>  		return MODE_CLOCK_HIGH;
> 
>  	if (mode_rate > max_rate && !dsc)
> --
> 2.25.4
> 
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