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drivers: i915: Fix BLC PWM register setup 

There is an error in i915_read_blc_pwm_ctl, where the register values
are not being copied correctly.  BLC_PWM_CTL and BLC_PWM_CTL2 are
getting mixed up.  This patch fixes that so that saveBLC_PWM_CTL2 and
not saveBLC_PWM_CTL is copied to the BLC_PWM_CTL2 register.

Signed-off-by: Simon Que <sque@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Simon Que 2011-11-10 17:50:26 -08:00 committed by Daniel Vetter
parent 931872fcea
commit 2aded1b6bb
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_panel.c
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@ -141,8 +141,8 @@ static u32 i915_read_blc_pwm_ctl(struct drm_i915_private *dev_priv)
dev_priv->saveBLC_PWM_CTL2 = val;
} else if (val == 0) {
I915_WRITE(BLC_PWM_PCH_CTL2,
dev_priv->saveBLC_PWM_CTL);
val = dev_priv->saveBLC_PWM_CTL;
dev_priv->saveBLC_PWM_CTL2);
val = dev_priv->saveBLC_PWM_CTL2;
}
} else {
val = I915_READ(BLC_PWM_CTL);