diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-01-23 22:04:24 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-01-27 11:51:16 +0300 |
| commit | c8c972ebd209ee1a0f7715e11bc37cbdb399e05e (patch) | |
| tree | 07b4770e00802941a296d50bc2c38042f03accae /drivers/gpu/drm/i915 | |
| parent | f745a80e34e749e8ef0ba7e694008a4d95447c70 (diff) | |
| download | linux-c8c972ebd209ee1a0f7715e11bc37cbdb399e05e.tar.xz | |
drm/i915: Add gt_act_freq_mhz sysfs file
Currently the 'gt_cur_freq_mhz' file shows the actual GPU frequency on
VLV/CHV, and the last requested frequency on other platforms. Change the
meaning of the file on VLV/CHV to follow the the other platforms, and
introduce a new file 'gt_act_freq_mhz' which shows the actual frequency
on all platforms.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_sysfs.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 1a1e5aa96d31..532ad3477997 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -281,7 +281,7 @@ static struct bin_attribute dpf_attrs_1 = { .private = (void *)1 }; -static ssize_t gt_cur_freq_mhz_show(struct device *kdev, +static ssize_t gt_act_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) { struct drm_minor *minor = dev_to_drm_minor(kdev); @@ -299,6 +299,36 @@ static ssize_t gt_cur_freq_mhz_show(struct device *kdev, freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); ret = vlv_gpu_freq(dev_priv, (freq >> 8) & 0xff); } else { + u32 rpstat = I915_READ(GEN6_RPSTAT1); + if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) + ret = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT; + else + ret = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT; + ret *= GT_FREQUENCY_MULTIPLIER; + } + mutex_unlock(&dev_priv->rps.hw_lock); + + intel_runtime_pm_put(dev_priv); + + return snprintf(buf, PAGE_SIZE, "%d\n", ret); +} + +static ssize_t gt_cur_freq_mhz_show(struct device *kdev, + struct device_attribute *attr, char *buf) +{ + struct drm_minor *minor = dev_to_drm_minor(kdev); + struct drm_device *dev = minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + int ret; + + flush_delayed_work(&dev_priv->rps.delayed_resume_work); + + intel_runtime_pm_get(dev_priv); + + mutex_lock(&dev_priv->rps.hw_lock); + if (IS_VALLEYVIEW(dev_priv->dev)) { + ret = vlv_gpu_freq(dev_priv, dev_priv->rps.cur_freq); + } else { ret = dev_priv->rps.cur_freq * GT_FREQUENCY_MULTIPLIER; } mutex_unlock(&dev_priv->rps.hw_lock); @@ -460,6 +490,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev, } +static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show, NULL); static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL); static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store); static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR, gt_min_freq_mhz_show, gt_min_freq_mhz_store); @@ -510,6 +541,7 @@ static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr } static const struct attribute *gen6_attrs[] = { + &dev_attr_gt_act_freq_mhz.attr, &dev_attr_gt_cur_freq_mhz.attr, &dev_attr_gt_max_freq_mhz.attr, &dev_attr_gt_min_freq_mhz.attr, @@ -520,6 +552,7 @@ static const struct attribute *gen6_attrs[] = { }; static const struct attribute *vlv_attrs[] = { + &dev_attr_gt_act_freq_mhz.attr, &dev_attr_gt_cur_freq_mhz.attr, &dev_attr_gt_max_freq_mhz.attr, &dev_attr_gt_min_freq_mhz.attr, |