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Commit 77d07fd9 authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915/lvds: Remove busy wait for powering down the panel 



Just assume that it will turn off...

Reported-by: default avatarSitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent b222f267

drivers/gpu/drm/i915/intel_lvds.c

+2 −9
Original line number Diff line number Diff line
@@ -83,10 +83,7 @@ static void intel_lvds_set_power(struct drm_device *dev, bool on) 


	if (on) {

		I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN);

		POSTING_READ(lvds_reg);



		I915_WRITE(ctl_reg, I915_READ(ctl_reg) |

			   POWER_TARGET_ON);

		I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON);

		if (wait_for(I915_READ(status_reg) & PP_ON, 1000))

			DRM_ERROR("timed out waiting to enable LVDS pipe");
@@ -94,11 +91,7 @@ static void intel_lvds_set_power(struct drm_device *dev, bool on) 
	} else {

		intel_panel_set_backlight(dev, 0);



		I915_WRITE(ctl_reg, I915_READ(ctl_reg) &

			   ~POWER_TARGET_ON);

		if (wait_for((I915_READ(status_reg) & PP_ON) == 0, 1000))

			DRM_ERROR("timed out waiting for LVDS pipe to turn off");



		I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON);

		I915_WRITE(lvds_reg, I915_READ(lvds_reg) & ~LVDS_PORT_EN);

		POSTING_READ(lvds_reg);

	}