drm/i915/guc/slpc: Disable rps_boost debugfs

rps_boost debugfs shows host turbo related info. This is not valid
when SLPC is enabled. guc_slpc_info already shows the number of boosts.
Add num_waiters there as well and disable rps_boost when SLPC is
enabled.

v2: Replace Bug with Link to resolve checkpatch warning

Link: https://gitlab.freedesktop.org/drm/intel/-/issues/7632
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230516154905.1048006-1-vinay.belgaumkar@intel.com

Author: vsbelgaum

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

@@ -539,7 +539,10 @@ static bool rps_eval(void *data)
 {
 	struct intel_gt *gt = data;
 
-	return HAS_RPS(gt->i915);
+	if (intel_guc_slpc_is_used(&gt->uc.guc))
+		return false;
+	else
+		return HAS_RPS(gt->i915);
 }
 
 DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(rps_boost);

drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c

@@ -837,6 +837,8 @@ int intel_guc_slpc_print_info(struct intel_guc_slpc *slpc, struct drm_printer *p
 				   slpc_decode_min_freq(slpc));
 			drm_printf(p, "\twaitboosts: %u\n",
 				   slpc->num_boosts);
+			drm_printf(p, "\tBoosts outstanding: %u\n",
+				   atomic_read(&slpc->num_waiters));
 		}
 	}