[Intel-gfx] [PATCH dii-client 8/9] drm/i915/mtl: Skip pcode qgv restrictions for MTL

[Matt Roper]

On Wed, Jan 11, 2023 at 03:55:30PM -0800, Radhakrishna Sripada wrote:
> Communicating QGV points restriction to PUnit happens via PM Demand
> instead of the Pcode mailbox in the previous platforms. GV point
> restriction is handled by the PM demand code.

This sounds correct, but it would probably be better to include this in
a patch series where PM Demand support is added; this patch doesn't
really make much sense without that additional context.


Matt

> 
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_bw.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
> index 1c236f02b380..6791b25eb72d 100644
> --- a/drivers/gpu/drm/i915/display/intel_bw.c
> +++ b/drivers/gpu/drm/i915/display/intel_bw.c
> @@ -124,6 +124,9 @@ int icl_pcode_restrict_qgv_points(struct drm_i915_private *dev_priv,
>  {
>  	int ret;
>  
> +	if (DISPLAY_VER(dev_priv) >= 14)
> +		return 0;
> +
>  	/* bspec says to keep retrying for at least 1 ms */
>  	ret = skl_pcode_request(&dev_priv->uncore, ICL_PCODE_SAGV_DE_MEM_SS_CONFIG,
>  				points_mask,
> -- 
> 2.34.1
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation