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Commit 57522c4c authored by Imre Deak's avatar Imre Deak
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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.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103070


Fixes: cebfcead ("drm/i915/DMC/CNL: Load DMC on CNL")
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Animesh Manna <animesh.manna@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171003095159.711-1-imre.deak@intel.com
parent 213f1bd0

drivers/gpu/drm/i915/intel_runtime_pm.c

+3 −0
Original line number Diff line number Diff line
@@ -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)