From 72c50535aed8a45d5fa358a4f2e373bae1886ca6 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Tue, 3 Oct 2017 11:54:06 +0300 Subject: [PATCH] drm/i915/cnl: Reprogram DMC firmware after S3/S4 resume The DMC firmware program memory is lost after S3/S4 system suspend, so we need to reprogram it during resume. Cc: Rodrigo Vivi Signed-off-by: Imre Deak --- 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); } static void cnl_display_core_uninit(struct drm_i915_private *dev_priv) -- 2.13.2