Commit 844e3313 authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Remove unwarranted clamping for hsw/bdw 



We always start off at an "efficient frequency" and can let the system
autotune from there, eliminating the need to clamp the available range.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarSagar Arun Kamble <sagar.a.kamble@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190418205358.11450-1-chris@chris-wilson.co.uk
parent 26ddc068

drivers/gpu/drm/i915/intel_pm.c

+2 −9
Original line number Diff line number Diff line
@@ -8528,18 +8528,9 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv) 
		gen6_init_rps_frequencies(dev_priv);



	/* Derive initial user preferences/limits from the hardware limits */

	rps->idle_freq = rps->min_freq;

	rps->cur_freq = rps->idle_freq;



	rps->max_freq_softlimit = rps->max_freq;

	rps->min_freq_softlimit = rps->min_freq;



	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))

		rps->min_freq_softlimit =

			max_t(int,

			      rps->efficient_freq,

			      intel_freq_opcode(dev_priv, 450));



	/* After setting max-softlimit, find the overclock max freq */

	if (IS_GEN(dev_priv, 6) ||

	    IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv)) {
@@ -8556,6 +8547,8 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv) 


	/* Finally allow us to boost to max by default */

	rps->boost_freq = rps->max_freq;

	rps->idle_freq = rps->min_freq;

	rps->cur_freq = rps->idle_freq;



	mutex_unlock(&dev_priv->pcu_lock);

}

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