diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_sysfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_sysfs.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index d61829e54f93..8c045ff47f0e 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -318,6 +318,41 @@ static ssize_t gt_cur_freq_mhz_show(struct device *kdev, return snprintf(buf, PAGE_SIZE, "%d\n", ret); } +static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) +{ + struct drm_minor *minor = dev_to_drm_minor(kdev); + struct drm_i915_private *dev_priv = to_i915(minor->dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", + intel_gpu_freq(dev_priv, dev_priv->rps.boost_freq)); +} + +static ssize_t gt_boost_freq_mhz_store(struct device *kdev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct drm_minor *minor = dev_to_drm_minor(kdev); + struct drm_device *dev = minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 val; + ssize_t ret; + + ret = kstrtou32(buf, 0, &val); + if (ret) + return ret; + + /* Validate against (static) hardware limits */ + val = intel_freq_opcode(dev_priv, val); + if (val < dev_priv->rps.min_freq || val > dev_priv->rps.max_freq) + return -EINVAL; + + mutex_lock(&dev_priv->rps.hw_lock); + dev_priv->rps.boost_freq = val; + mutex_unlock(&dev_priv->rps.hw_lock); + + return count; +} + static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) { @@ -465,6 +500,7 @@ 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_boost_freq_mhz, S_IRUGO, gt_boost_freq_mhz_show, gt_boost_freq_mhz_store); 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); @@ -498,6 +534,7 @@ 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_boost_freq_mhz.attr, &dev_attr_gt_max_freq_mhz.attr, &dev_attr_gt_min_freq_mhz.attr, &dev_attr_gt_RP0_freq_mhz.attr, @@ -509,6 +546,7 @@ 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_boost_freq_mhz.attr, &dev_attr_gt_max_freq_mhz.attr, &dev_attr_gt_min_freq_mhz.attr, &dev_attr_gt_RP0_freq_mhz.attr, |