This saves many ms per call on my BYT by eliminating Punit communication
from the hw readout paths.
Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pm.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 452518f..09a3677 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5572,13 +5572,11 @@ bool intel_display_power_enabled(struct drm_i915_private *dev_priv,
mutex_lock(&power_domains->lock);
for_each_power_well_rev(i, power_well, BIT(domain), power_domains) {
- if (power_well->always_on)
+ if (power_well->always_on || power_well->count)
continue;
- if (!power_well->ops->is_enabled(dev_priv, power_well)) {
- is_enabled = false;
- break;
- }
+ is_enabled = false;
+ break;
}
mutex_unlock(&power_domains->lock);
--
1.8.4.2
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