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authorImre Deak <imre.deak@intel.com>2017-10-03 12:51:58 +0300
committerRodrigo Vivi <rodrigo.vivi@intel.com>2017-10-04 15:49:31 -0700
commit2a8408e5372503fe4df9b5bbb49fb3af0c212c67 (patch)
treea91af7c6be7e2add97fa6ad59d0120239d377169 /drivers
parent71300132975f364a0d3ebf68671a2ce4923191db (diff)
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: cebfcead63de ("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: Imre Deak <imre.deak@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171003095159.711-1-imre.deak@intel.com (cherry picked from commit 57522c4c87de20d8f7ad4e142a3a4334066d55ff) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/intel_runtime_pm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index b66d8e136aa3..b3a087cb0860 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -2782,6 +2782,9 @@ 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);
}
#undef CNL_PROCMON_IDX