diff options
| author | Imre Deak <imre.deak@intel.com> | 2013-11-25 17:15:35 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-11-26 20:08:29 +0100 |
| commit | 1da51581b00b3fc3ac72156e2a69c6bab71f7794 (patch) | |
| tree | 954f32c347417ae21ddb1fbd6783475be4f1a1ba /drivers/gpu/drm/i915/intel_pm.c | |
| parent | 1c2256df26f697bcd20016c271ddc8fd44653919 (diff) | |
drm/i915: add a debugfs entry for power domain info
Add a debugfs entry showing the use-count for all power domains of each
power well.
v3: address comments from Paulo:
- simplify power_domain_str() by using a switch table
- move power_well::domain_count to power_domains
- WARN_ON decrementing a 0 refcount
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 6b4f91ee486..2f8399c347e 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5754,8 +5754,13 @@ void intel_display_power_get(struct drm_device *dev, power_domains = &dev_priv->power_domains; mutex_lock(&power_domains->lock); + +#if IS_ENABLED(CONFIG_DEBUG_FS) + power_domains->domain_use_count[domain]++; +#endif for_each_power_well(i, power_well, BIT(domain), power_domains) __intel_power_well_get(dev, power_well); + mutex_unlock(&power_domains->lock); } @@ -5770,8 +5775,15 @@ void intel_display_power_put(struct drm_device *dev, power_domains = &dev_priv->power_domains; mutex_lock(&power_domains->lock); + for_each_power_well_rev(i, power_well, BIT(domain), power_domains) __intel_power_well_put(dev, power_well); + +#if IS_ENABLED(CONFIG_DEBUG_FS) + WARN_ON(!power_domains->domain_use_count[domain]); + power_domains->domain_use_count[domain]--; +#endif + mutex_unlock(&power_domains->lock); } |