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drm/i915: HSW_BLC_PWM2_CTL doesn't exist on BDW

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So don't write it, otherwise we will trigger unclaimed register
errors.

Testcase: igt/pm_rpm/rte
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2014-07-04 11:50:30 -03:00 committed by Daniel Vetter
parent 813bde438c
commit c5107b875a
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/i915/intel_display.c
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@ -7326,8 +7326,9 @@ static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n");
WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
"CPU PWM1 enabled\n");
WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
"CPU PWM2 enabled\n");
if (IS_HASWELL(dev))
WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
"CPU PWM2 enabled\n");
WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
"PCH PWM1 enabled\n");
WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,