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drm/i915: fix SDEIMR assertion when disabling LCPLL

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This was causing WARNs in one machine, so instead of trying to guess
exactly which hotplug bits should exist, just do the test on the
non-HPD bits. We don't care about the state of the hotplug bits, we
just care about the others, that need to be 1.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2013-08-19 13:18:08 -03:00 committed by Daniel Vetter
parent 215733fadb
commit bd633a7c1c
1 changed files with 2 additions and 6 deletions
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8
drivers/gpu/drm/i915/intel_display.c
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@ -5932,11 +5932,7 @@ static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
struct intel_crtc *crtc;
unsigned long irqflags;
uint32_t val, pch_hpd_mask;
pch_hpd_mask = SDE_PORTB_HOTPLUG_CPT | SDE_PORTC_HOTPLUG_CPT;
if (!(dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE))
pch_hpd_mask |= SDE_PORTD_HOTPLUG_CPT | SDE_CRT_HOTPLUG_CPT;
uint32_t val;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
WARN(crtc->base.enabled, "CRTC for pipe %c enabled\n",
@ -5962,7 +5958,7 @@ static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
WARN((val & ~DE_PCH_EVENT_IVB) != val,
"Unexpected DEIMR bits enabled: 0x%x\n", val);
val = I915_READ(SDEIMR);
WARN((val & ~pch_hpd_mask) != val,
WARN((val | SDE_HOTPLUG_MASK_CPT) != 0xffffffff,
"Unexpected SDEIMR bits enabled: 0x%x\n", val);
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
}