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drm/i915: Add RP0/RP1/RPn render P state thresholds in VLV sysfs 

This is useful for userspace utilities to verify and micromanaging the
increase/decrease frequncy.

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Deepak S 2014-07-10 13:16:22 +05:30 committed by Daniel Vetter
parent f8f2b001a1
commit 74c4f62bcd
1 changed files with 15 additions and 3 deletions
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18
drivers/gpu/drm/i915/i915_sysfs.c
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@ -461,11 +461,20 @@ static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr
mutex_unlock(&dev->struct_mutex);
if (attr == &dev_attr_gt_RP0_freq_mhz) {
val = ((rp_state_cap & 0x0000ff) >> 0) * GT_FREQUENCY_MULTIPLIER;
if (IS_VALLEYVIEW(dev))
val = vlv_gpu_freq(dev_priv, dev_priv->rps.rp0_freq);
else
val = ((rp_state_cap & 0x0000ff) >> 0) * GT_FREQUENCY_MULTIPLIER;
} else if (attr == &dev_attr_gt_RP1_freq_mhz) {
val = ((rp_state_cap & 0x00ff00) >> 8) * GT_FREQUENCY_MULTIPLIER;
if (IS_VALLEYVIEW(dev))
val = vlv_gpu_freq(dev_priv, dev_priv->rps.rp1_freq);
else
val = ((rp_state_cap & 0x00ff00) >> 8) * GT_FREQUENCY_MULTIPLIER;
} else if (attr == &dev_attr_gt_RPn_freq_mhz) {
val = ((rp_state_cap & 0xff0000) >> 16) * GT_FREQUENCY_MULTIPLIER;
if (IS_VALLEYVIEW(dev))
val = vlv_gpu_freq(dev_priv, dev_priv->rps.min_freq);
else
val = ((rp_state_cap & 0xff0000) >> 16) * GT_FREQUENCY_MULTIPLIER;
} else {
BUG();
}
@ -486,6 +495,9 @@ static const struct attribute *vlv_attrs[] = {
&dev_attr_gt_cur_freq_mhz.attr,
&dev_attr_gt_max_freq_mhz.attr,
&dev_attr_gt_min_freq_mhz.attr,
&dev_attr_gt_RP0_freq_mhz.attr,
&dev_attr_gt_RP1_freq_mhz.attr,
&dev_attr_gt_RPn_freq_mhz.attr,
&dev_attr_vlv_rpe_freq_mhz.attr,
NULL,
};