broadwell: Skip pre-graphics delay in resume path

If the board is configured with a pre-graphics delay it should
be skipped in the resume path.

BUG=chrome-os-partner:28234
BRANCH=broadwell
TEST=measure resume time in dev mode to be same as normal mode

Change-Id: I5a4ad5bba9e5316c89f7935d8811759b041429d9
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: b44a7167532410fc44ca9df1c91c91aaf541ae49
Original-Change-Id: Ic9f2cda71d8a567f57e863409f0f3fb98ab68bcf
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/245116
Original-Reviewed-by: Shawn N <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/9812
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/soc/intel/broadwell/igd.c

@@ -30,6 +30,7 @@
 #include <reg_script.h>
 #include <drivers/intel/gma/i915_reg.h>
 #include <soc/cpu.h>
+#include <soc/pm.h>
 #include <soc/ramstage.h>
 #include <soc/systemagent.h>
 #include <soc/intel/broadwell/chip.h>
@@ -488,6 +489,7 @@ static void igd_init(struct device *dev)
 		return;
 
 	/* Wait for any configured pre-graphics delay */
+	if (acpi_slp_type != SLEEP_STATE_S3) {
 #if IS_ENABLED(CONFIG_CHROMEOS)
 		if (developer_mode_enabled() || recovery_mode_enabled() ||
 		    vboot_wants_oprom())
@@ -495,6 +497,7 @@ static void igd_init(struct device *dev)
 #else
 		mdelay(CONFIG_PRE_GRAPHICS_DELAY);
 #endif
+	}
 
 	/* Early init steps */
 	if (is_broadwell) {