On Tue, Oct 03, 2017 at 09:51:58AM +0000, Imre Deak wrote: > The DMC firmware program memory is lost after S3/S4 system suspend, so > we need to reprogram it during resume. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103070 > Fixes: cebfcead63de ("drm/i915/DMC/CNL: Load DMC on CNL") > Cc: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx> > Cc: Animesh Manna <animesh.manna@xxxxxxxxx> > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> > Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_runtime_pm.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c > index 7933d1bc6a1c..3791c3f5f56d 100644 > --- a/drivers/gpu/drm/i915/intel_runtime_pm.c > +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c > @@ -2809,6 +2809,9 @@ static void cnl_display_core_init(struct drm_i915_private *dev_priv, bool resume > > /* 6. Enable DBUF */ > gen9_dbuf_enable(dev_priv); > + > + if (resume && dev_priv->csr.dmc_payload) > + intel_csr_load_program(dev_priv); If this is needed for all platforms, couldn't we move that to intel_power_domains_init_hw()? so we don't forget future platforms? > } > > static void cnl_display_core_uninit(struct drm_i915_private *dev_priv) > -- > 2.13.2 > _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
