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| author | Zhao Yakui <yakui.zhao@intel.com> | 2009-10-28 05:10:00 +0000 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2009-11-05 14:49:13 -0800 |
| commit | 01c66889c14aa163c49355b3be2ccfb214500599 (patch) | |
| tree | 278e3e9a1fb0001d61d531804e8db6ea83bc712c /drivers/gpu/drm/i915/i915_irq.c | |
| parent | 1dc7546d1a73664e5d117715b214bea9cae5951c (diff) | |
| download | op-kernel-dev-01c66889c14aa163c49355b3be2ccfb214500599.zip op-kernel-dev-01c66889c14aa163c49355b3be2ccfb214500599.tar.gz | |
drm/i915: Add ACPI OpRegion support for Ironlake
Add the support of ACPI opregion on Ironlake so that the backlight
brightness can be adjusted by using ACPI interface
>/sys/class/backlight/acpi_video0/brightness
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Tested-by: Zhao Yakui <yakui.zhao@intel.com>
[zhenyuw: cleanups, fix typo for checking GSE irq and convert to
current irq handling logic.]
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 0887581..ce337be 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -157,6 +157,20 @@ i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) } /** + * intel_enable_asle - enable ASLE interrupt for OpRegion + */ +void intel_enable_asle (struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + + if (IS_IGDNG(dev)) + igdng_enable_display_irq(dev_priv, DE_GSE); + else + i915_enable_pipestat(dev_priv, 1, + I915_LEGACY_BLC_EVENT_ENABLE); +} + +/** * i915_pipe_enabled - check if a pipe is enabled * @dev: DRM device * @pipe: pipe to check @@ -288,6 +302,9 @@ irqreturn_t igdng_irq_handler(struct drm_device *dev) DRM_WAKEUP(&dev_priv->irq_queue); } + if (de_iir & DE_GSE) + ironlake_opregion_gse_intr(dev); + de_iir = new_de_iir; gt_iir = new_gt_iir; } @@ -992,7 +1009,7 @@ static int igdng_irq_postinstall(struct drm_device *dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; /* enable kind of interrupts always enabled */ - u32 display_mask = DE_MASTER_IRQ_CONTROL /*| DE_PCH_EVENT */; + u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE /*| DE_PCH_EVENT */; u32 render_mask = GT_USER_INTERRUPT; dev_priv->irq_mask_reg = ~display_mask; |
