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Commit 177006a1 authored by Jesse Barnes's avatar Jesse Barnes Committed by Daniel Vetter
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drm/i915: read current freq from Punit on VLV 



Instead of returning the cached value, which is just what the kernel
requested.

Reviewed-by: default avatarKenneth Graunke <kenneth@whitecape.org>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 8f375e10

drivers/gpu/drm/i915/i915_sysfs.c

+6 −3
Original line number Diff line number Diff line
@@ -212,10 +212,13 @@ static ssize_t gt_cur_freq_mhz_show(struct device *kdev, 
	int ret;



	mutex_lock(&dev_priv->rps.hw_lock);

	if (IS_VALLEYVIEW(dev_priv->dev))

		ret = vlv_gpu_freq(dev_priv->mem_freq, dev_priv->rps.cur_delay);

	else

	if (IS_VALLEYVIEW(dev_priv->dev)) {

		u32 freq;

		valleyview_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS, &freq);

		ret = vlv_gpu_freq(dev_priv->mem_freq, (freq >> 8) & 0xff);

	} else {

		ret = dev_priv->rps.cur_delay * GT_FREQUENCY_MULTIPLIER;

	}

	mutex_unlock(&dev_priv->rps.hw_lock);



	return snprintf(buf, PAGE_SIZE, "%d\n", ret);