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Commit 2aded1b6 authored by Simon Que's avatar Simon Que Committed by Daniel Vetter
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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: default avatarSimon Que <sque@chromium.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 931872fc

drivers/gpu/drm/i915/intel_panel.c

+2 −2
Original line number Diff line number Diff line
@@ -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);