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drm/i915: Add media rc6 residency file to sysfs 

On VLV/CHV the media well rc6 residency gets reported separately
from the render well, so add another file to sysfs so that we can
report the residency to the user.

Testcase: igt/pm_rc6_residency --run-subtest media-rc6-accuracy
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2015-02-26 21:10:27 +05:30 committed by Daniel Vetter
parent 719cd21ced
commit 626ad6f37d
1 changed files with 25 additions and 0 deletions
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25
drivers/gpu/drm/i915/i915_sysfs.c
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@ -127,10 +127,19 @@ show_rc6pp_ms(struct device *kdev, struct device_attribute *attr, char *buf)
return snprintf(buf, PAGE_SIZE, "%u\n", rc6pp_residency);
}
static ssize_t
show_media_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf)
{
struct drm_minor *dminor = dev_get_drvdata(kdev);
u32 rc6_residency = calc_residency(dminor->dev, VLV_GT_MEDIA_RC6);
return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency);
}
static DEVICE_ATTR(rc6_enable, S_IRUGO, show_rc6_mask, NULL);
static DEVICE_ATTR(rc6_residency_ms, S_IRUGO, show_rc6_ms, NULL);
static DEVICE_ATTR(rc6p_residency_ms, S_IRUGO, show_rc6p_ms, NULL);
static DEVICE_ATTR(rc6pp_residency_ms, S_IRUGO, show_rc6pp_ms, NULL);
static DEVICE_ATTR(media_rc6_residency_ms, S_IRUGO, show_media_rc6_ms, NULL);
static struct attribute *rc6_attrs[] = {
&dev_attr_rc6_enable.attr,
@ -153,6 +162,16 @@ static struct attribute_group rc6p_attr_group = {
.name = power_group_name,
.attrs = rc6p_attrs
};
static struct attribute *media_rc6_attrs[] = {
&dev_attr_media_rc6_residency_ms.attr,
NULL
};
static struct attribute_group media_rc6_attr_group = {
.name = power_group_name,
.attrs = media_rc6_attrs
};
#endif
static int l3_access_valid(struct drm_device *dev, loff_t offset)
@ -606,6 +625,12 @@ void i915_setup_sysfs(struct drm_device *dev)
if (ret)
DRM_ERROR("RC6p residency sysfs setup failed\n");
}
if (IS_VALLEYVIEW(dev)) {
ret = sysfs_merge_group(&dev->primary->kdev->kobj,
&media_rc6_attr_group);
if (ret)
DRM_ERROR("Media RC6 residency sysfs setup failed\n");
}
#endif
if (HAS_L3_DPF(dev)) {
ret = device_create_bin_file(dev->primary->kdev, &dpf_attrs);