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

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Just assume that it will turn off...

Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-09-12 12:42:35 +01:00
parent b222f26733
commit 77d07fd9d7
1 changed files with 2 additions and 9 deletions
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11
drivers/gpu/drm/i915/intel_lvds.c
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@ -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);
}