For unknown reasons the DMC firmware overwrites our DC5/6 bits in the DC_STATE_EN register. This happens from time to time during the igt@kms_flip@basic-flip-vs-dpms test. We manually fix up the register when this occurs and so far that seems to work. This patch demotes the warning to a debug message to not clutter our CI results.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=93697 Cc: Daniel Vetter <daniel.vet...@ffwll.ch> Signed-off-by: Patrik Jakobsson <patrik.jakobs...@linux.intel.com> --- drivers/gpu/drm/i915/intel_runtime_pm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 89a7dd8..68e213c 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -574,8 +574,10 @@ static void assert_can_enable_dc6(struct drm_i915_private *dev_priv) WARN_ONCE(!HAS_RUNTIME_PM(dev), "Runtime PM not enabled.\n"); WARN_ONCE(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE, "Backlight is not disabled.\n"); - WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC6), - "DC6 already programmed to be enabled.\n"); + + /* Sometimes fw incorrectly modify our bits so just debug print this */ + if ((I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC6)) + DRM_DEBUG_KMS("DC6 already programmed to be enabled.\n"); assert_csr_loaded(dev_priv); } -- 2.5.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
