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drm/i915/bxt: clear hpd status sticky bits earlier 

The hotplug status is cached in hp_control, and will be passed on to
bottom halves through intel_hpd_irq_handler(), so we can clear the
sticky bits earlier.

While at it, drop the redundant logging of the hotplug status, which
will also be logged by pch_get_hpd_pins().

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jani Nikula 2015-05-28 15:43:54 +03:00 committed by Daniel Vetter
parent 676574dffa
commit 475c2e3b3c
1 changed files with 3 additions and 13 deletions
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16
drivers/gpu/drm/i915/i915_irq.c
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@ -2241,21 +2241,11 @@ static void bxt_hpd_handler(struct drm_device *dev, uint32_t iir_status)
return;
}
DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
hp_control & BXT_HOTPLUG_CTL_MASK);
/* Check for HPD storm and schedule bottom half */
pch_get_hpd_pins(&pin_mask, &long_mask, hp_trigger, hp_control, hpd_bxt);
intel_hpd_irq_handler(dev, pin_mask, long_mask);
/*
* FIXME: Save the hot plug status for bottom half before
* clearing the sticky status bits, else the status will be
* lost.
*/
/* Clear sticky bits in hpd status */
I915_WRITE(BXT_HOTPLUG_CTL, hp_control);
pch_get_hpd_pins(&pin_mask, &long_mask, hp_trigger, hp_control, hpd_bxt);
intel_hpd_irq_handler(dev, pin_mask, long_mask);
}
static irqreturn_t gen8_irq_handler(int irq, void *arg)