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drm/i915: Create an ivybridge_irq_preinstall

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Just duplicates ironlake_irq_preinstall for now.

v2: Add new PCH_NOP check (Damien)
Add SDEIMR comment (Damien)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Update now outdated comment.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2013-05-28 19:22:25 -07:00 committed by Daniel Vetter
parent baf02a1fb0
commit 7d99163da6
1 changed files with 33 additions and 2 deletions
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35
drivers/gpu/drm/i915/i915_irq.c
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@ -2491,6 +2491,37 @@ static void ironlake_irq_preinstall(struct drm_device *dev)
I915_WRITE(GTIER, 0x0);
POSTING_READ(GTIER);
/* south display irq */
I915_WRITE(SDEIMR, 0xffffffff);
/*
* SDEIER is also touched by the interrupt handler to work around missed
* PCH interrupts. Hence we can't update it after the interrupt handler
* is enabled - instead we unconditionally enable all PCH interrupt
* sources here, but then only unmask them as needed with SDEIMR.
*/
I915_WRITE(SDEIER, 0xffffffff);
POSTING_READ(SDEIER);
}
static void ivybridge_irq_preinstall(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
atomic_set(&dev_priv->irq_received, 0);
I915_WRITE(HWSTAM, 0xeffe);
/* XXX hotplug from PCH */
I915_WRITE(DEIMR, 0xffffffff);
I915_WRITE(DEIER, 0x0);
POSTING_READ(DEIER);
/* and GT */
I915_WRITE(GTIMR, 0xffffffff);
I915_WRITE(GTIER, 0x0);
POSTING_READ(GTIER);
if (HAS_PCH_NOP(dev))
return;
@ -3494,9 +3525,9 @@ void intel_irq_init(struct drm_device *dev)
dev->driver->disable_vblank = valleyview_disable_vblank;
dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
} else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
/* Share pre & uninstall handlers with ILK/SNB */
/* Share uninstall handlers with ILK/SNB */
dev->driver->irq_handler = ivybridge_irq_handler;
dev->driver->irq_preinstall = ironlake_irq_preinstall;
dev->driver->irq_preinstall = ivybridge_irq_preinstall;
dev->driver->irq_postinstall = ivybridge_irq_postinstall;
dev->driver->irq_uninstall = ironlake_irq_uninstall;
dev->driver->enable_vblank = ivybridge_enable_vblank;