diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index f9f9fcc833c50438d8c04b43e9a9962023665da9..9f03cd063afecfd746f862cd57d09f9025ff0ded 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7974,6 +7974,8 @@ enum {
 #define   GEN6_PCODE_WRITE_D_COMP		0x11
 #define   HSW_PCODE_DE_WRITE_FREQ_REQ		0x17
 #define   DISPLAY_IPS_CONTROL			0x19
+            /* See also IPS_CTL */
+#define     IPS_PCODE_CONTROL			(1 << 30)
 #define   HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL	0x1A
 #define   GEN9_PCODE_SAGV_CONTROL		0x21
 #define     GEN9_SAGV_DISABLE			0x0
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index dbe7d8682c97f757c71859f3266de459c58214d9..c4d8bb75686a0a85cc1971fce6168862354758e7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4956,7 +4956,8 @@ void hsw_enable_ips(struct intel_crtc *crtc)
 	assert_plane_enabled(dev_priv, crtc->plane);
 	if (IS_BROADWELL(dev_priv)) {
 		mutex_lock(&dev_priv->rps.hw_lock);
-		WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
+		WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL,
+						IPS_ENABLE | IPS_PCODE_CONTROL));
 		mutex_unlock(&dev_priv->rps.hw_lock);
 		/* Quoting Art Runyan: "its not safe to expect any particular
 		 * value in IPS_CTL bit 31 after enabling IPS through the