drm/i915/mtl: Skip pcode qgv restrictions for MTL

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.

Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230318005852.2303937-5-radhakrishna.sripada@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index 202321ffbe2ac21214c3d4d24b88663fd8f73184..597d5816ad1b073e440ac6348c985b4d3e98a81f 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -150,6 +150,9 @@ 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,