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drm/i915: make sure VDD AUX power has time to settle

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When turning on or off the VDD AUX bit, we need to give the panel time
to start or stop or AUX transactions may fail.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Jesse Barnes 2010-08-25 13:09:48 -07:00 committed by Chris Wilson
parent 3969c9c927
commit 3ba5c569c4
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/intel_dp.c
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@ -825,6 +825,7 @@ static void ironlake_edp_panel_vdd_on(struct drm_device *dev)
pp |= EDP_FORCE_VDD;
I915_WRITE(PCH_PP_CONTROL, pp);
POSTING_READ(PCH_PP_CONTROL);
msleep(300);
}
static void ironlake_edp_panel_vdd_off(struct drm_device *dev)
@ -836,6 +837,7 @@ static void ironlake_edp_panel_vdd_off(struct drm_device *dev)
pp &= ~EDP_FORCE_VDD;
I915_WRITE(PCH_PP_CONTROL, pp);
POSTING_READ(PCH_PP_CONTROL);
msleep(300);
}
static void ironlake_edp_backlight_on (struct drm_device *dev)