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drm/i915: Only call udelay() when waiting for clocks to stabilise

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-09-10 22:33:42 +01:00
parent d5e0d2f519
commit 8c4223bee9
1 changed files with 1 additions and 3 deletions
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4
drivers/gpu/drm/i915/intel_display.c
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@ -1989,8 +1989,8 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
if ((temp & DPLL_VCO_ENABLE) == 0) {
I915_WRITE(pch_dpll_reg, temp | DPLL_VCO_ENABLE);
I915_READ(pch_dpll_reg);
udelay(200);
}
udelay(200);
if (HAS_PCH_CPT(dev)) {
/* Be sure PCH DPLL SEL is set */
@ -2136,8 +2136,6 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc)
} else
DRM_DEBUG_KMS("crtc %d is disabled\n", pipe);
udelay(100);
/* Disable PF */
I915_WRITE(pipe ? PFB_CTL_1 : PFA_CTL_1, 0);
I915_WRITE(pipe ? PFB_WIN_SZ : PFA_WIN_SZ, 0);