On Thu, Apr 07, 2016 at 08:22:11PM +0530, Animesh Manna wrote: > For BXT, display engine can not generate interrupt when in D3. > On the othen hand S0ix can be achieved without display in D3. So,
other > Display should not put into D3 for HPD to work and will not > have any power impact. > > Signed-off-by: Animesh Manna <[email protected]> > --- > drivers/gpu/drm/i915/i915_drv.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c > index 020a31c..6b8c906 100644 > --- a/drivers/gpu/drm/i915/i915_drv.c > +++ b/drivers/gpu/drm/i915/i915_drv.c > @@ -1547,6 +1547,9 @@ static int intel_runtime_suspend(struct device *device) > > assert_forcewakes_inactive(dev_priv); > > + if (dev_priv->vbt.hpd_wakeup_enabled) > + pci_save_state(pdev); > + > DRM_DEBUG_KMS("Device suspended\n"); > return 0; > } > @@ -1563,6 +1566,9 @@ static int intel_runtime_resume(struct device *device) > > DRM_DEBUG_KMS("Resuming device\n"); > > + if (dev_priv->vbt.hpd_wakeup_enabled) > + pci_restore_state(pdev); If the state hasn't been saved pci_restore_state() will return without doing anything, so the conditional shouldn't be necessary. > + > WARN_ON_ONCE(atomic_read(&dev_priv->pm.wakeref_count)); > disable_rpm_wakeref_asserts(dev_priv); _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
