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>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f9f339a..210d0f6 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -733,6 +733,8 @@
void
i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
+void intel_enable_asle (struct drm_device *dev);
+
/* i915_mem.c */
extern int i915_mem_alloc(struct drm_device *dev, void *data,
@@ -861,11 +863,13 @@
extern int intel_opregion_init(struct drm_device *dev, int resume);
extern void intel_opregion_free(struct drm_device *dev, int suspend);
extern void opregion_asle_intr(struct drm_device *dev);
+extern void ironlake_opregion_gse_intr(struct drm_device *dev);
extern void opregion_enable_asle(struct drm_device *dev);
#else
static inline int intel_opregion_init(struct drm_device *dev, int resume) { return 0; }
static inline void intel_opregion_free(struct drm_device *dev, int suspend) { return; }
static inline void opregion_asle_intr(struct drm_device *dev) { return; }
+static inline void ironlake_opregion_gse_intr(struct drm_device *dev) { return; }
static inline void opregion_enable_asle(struct drm_device *dev) { return; }
#endif