diff options
| author | Matthew Garrett <mjg59@srcf.ucam.org> | 2008-08-05 20:37:25 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@linux.ie> | 2008-10-17 23:10:10 +0200 |
| commit | 8ee1c3db9075cb3211352e737e0feb98fd733b20 (patch) | |
| tree | ad91cc8b4ce57fdfdbac8920ba4b352a6871c782 /drivers/gpu/drm/i915/i915_irq.c | |
| parent | i915: Initialize hardware status page at device load when possible. (diff) | |
| download | linux-8ee1c3db9075cb3211352e737e0feb98fd733b20.tar.xz linux-8ee1c3db9075cb3211352e737e0feb98fd733b20.zip | |
Add Intel ACPI IGD OpRegion support
This adds the support necessary for allowing ACPI backlight control to
work on some newer Intel-based graphics systems. Tested on Thinkpad T61
and HP 2510p hardware.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 24d11ed5bbc7..ae7d3a82a6d1 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -36,9 +36,11 @@ /** These are the interrupts used by the driver */ #define I915_INTERRUPT_ENABLE_MASK (I915_USER_INTERRUPT | \ I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | \ - I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT) + I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT | \ + I915_ASLE_INTERRUPT | \ + I915_DISPLAY_PIPE_B_EVENT_INTERRUPT) -static inline void +void i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask) { if ((dev_priv->irq_mask_reg & mask) != 0) { @@ -274,6 +276,9 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) return IRQ_NONE; } + I915_WRITE(PIPEASTAT, pipea_stats); + I915_WRITE(PIPEBSTAT, pipeb_stats); + I915_WRITE(IIR, iir); if (dev->pdev->msi_enabled) I915_WRITE(IMR, dev_priv->irq_mask_reg); @@ -306,14 +311,14 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) if (dev_priv->swaps_pending > 0) drm_locked_tasklet(dev, i915_vblank_tasklet); - I915_WRITE(PIPEASTAT, - pipea_stats|I915_VBLANK_INTERRUPT_ENABLE| - PIPE_VBLANK_INTERRUPT_STATUS); - I915_WRITE(PIPEBSTAT, - pipeb_stats|I915_VBLANK_INTERRUPT_ENABLE| - PIPE_VBLANK_INTERRUPT_STATUS); } + if (iir & I915_ASLE_INTERRUPT) + opregion_asle_intr(dev); + + if (iir & I915_DISPLAY_PIPE_B_EVENT_INTERRUPT) + opregion_asle_intr(dev); + return IRQ_HANDLED; } @@ -661,10 +666,14 @@ void i915_driver_irq_postinstall(struct drm_device * dev) if (dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_B) dev_priv->irq_mask_reg &= ~I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; + dev_priv->irq_mask_reg &= I915_INTERRUPT_ENABLE_MASK; + I915_WRITE(IMR, dev_priv->irq_mask_reg); I915_WRITE(IER, I915_INTERRUPT_ENABLE_MASK); (void) I915_READ(IER); + opregion_enable_asle(dev); + DRM_INIT_WAITQUEUE(&dev_priv->irq_queue); } |