drm/i915: Record default rps threshold values

Record the default values as preparation for exposing the sysfs controls.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@kernel.org>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230717164013.826614-2-tvrtko.ursulin@linux.intel.com

Author: tursulin

drivers/gpu/drm/i915/gt/intel_gt_types.h

@@ -83,6 +83,9 @@ enum intel_submission_method {
 struct gt_defaults {
 	u32 min_freq;
 	u32 max_freq;
+
+	u8 rps_up_threshold;
+	u8 rps_down_threshold;
 };
 
 enum intel_gt_type {

drivers/gpu/drm/i915/gt/intel_rps.c

@@ -2014,7 +2014,9 @@ void intel_rps_init(struct intel_rps *rps)
 
 	/* Set default thresholds in % */
 	rps->power.up_threshold = 95;
+	rps_to_gt(rps)->defaults.rps_up_threshold = rps->power.up_threshold;
 	rps->power.down_threshold = 85;
+	rps_to_gt(rps)->defaults.rps_down_threshold = rps->power.down_threshold;
 
 	/* Finally allow us to boost to max by default */
 	rps->boost_freq = rps->max_freq;