drm/i915/display: Fuse bit for power management disable removed

Starting with display version 13 the fuse bit to disable Display PM has
been removed.

v2: Bit removed starting with display version 13 (MattR)
v3: DG2 still uses this fuse bit (MattR)

Bspec: 50075, 69464
Cc: Matt Roper <[email protected]>
Signed-off-by: Clint Taylor <[email protected]>
Signed-off-by: Matt Atwood <[email protected]>
Reviewed-by: Jouni Högander <[email protected]>
Reviewed-by: Vinod Govindapillai <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Jani Nikula <[email protected]>

Author: cataylox

drivers/gpu/drm/i915/display/intel_display_device.c

@@ -1776,8 +1776,10 @@ static void __intel_display_device_info_runtime_init(struct drm_i915_private *i9
 		if (dfsm & SKL_DFSM_DISPLAY_HDCP_DISABLE)
 			display_runtime->has_hdcp = 0;
 
-		if (dfsm & SKL_DFSM_DISPLAY_PM_DISABLE)
-			display_runtime->fbc_mask = 0;
+		if (IS_DG2(i915) || DISPLAY_VER(i915) < 13) {
+			if (dfsm & SKL_DFSM_DISPLAY_PM_DISABLE)
+				display_runtime->fbc_mask = 0;
+		}
 
 		if (DISPLAY_VER(i915) >= 11 && (dfsm & ICL_DFSM_DMC_DISABLE))
 			display_runtime->has_dmc = 0;