diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 85c35fdfac659cedf055f2746011e6fff6ed31a3..4a815bb6cfcaf42b3252e2d286f6ce7f0c57dd45 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -656,9 +656,15 @@ static void skl_set_power_well(struct drm_i915_private *dev_priv, } } else { if (enable_requested) { - I915_WRITE(HSW_PWR_WELL_DRIVER, tmp & ~req_mask); - POSTING_READ(HSW_PWR_WELL_DRIVER); - DRM_DEBUG_KMS("Disabling %s\n", power_well->name); + if (IS_SKYLAKE(dev) && + (power_well->data == SKL_DISP_PW_1) && + (intel_csr_load_status_get(dev_priv) == FW_LOADED)) + DRM_DEBUG_KMS("Not Disabling PW1, dmc will handle\n"); + else { + I915_WRITE(HSW_PWR_WELL_DRIVER, tmp & ~req_mask); + POSTING_READ(HSW_PWR_WELL_DRIVER); + DRM_DEBUG_KMS("Disabling %s\n", power_well->name); + } if ((GEN9_ENABLE_DC5(dev) || SKL_ENABLE_DC6(dev)) && power_well->data == SKL_DISP_PW_2) {