3 files changed, 45 insertions, 0 deletions
diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h
new file mode 100644
index 000000000000..adb5ba5cbd9d
--- /dev/null
+++ b/include/sound/hda_i915.h
@@ -0,0 +1,36 @@
+/*
+ * HD-Audio helpers to sync with i915 driver
+ */
+#ifndef __SOUND_HDA_I915_H
+#define __SOUND_HDA_I915_H
+
+#ifdef CONFIG_SND_HDA_I915
+int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable);
+int snd_hdac_display_power(struct hdac_bus *bus, bool enable);
+int snd_hdac_get_display_clk(struct hdac_bus *bus);
+int snd_hdac_i915_init(struct hdac_bus *bus);
+int snd_hdac_i915_exit(struct hdac_bus *bus);
+#else
+static int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable)
+{
+	return 0;
+}
+static inline int snd_hdac_display_power(struct hdac_bus *bus, bool enable)
+{
+	return 0;
+}
+static inline int snd_hdac_get_display_clk(struct hdac_bus *bus)
+{
+	return 0;
+}
+static inline int snd_hdac_i915_init(struct hdac_bus *bus)
+{
+	return -ENODEV;
+}
+static inline int snd_hdac_i915_exit(struct hdac_bus *bus)
+{
+	return 0;
+}
+#endif
+
+#endif /* __SOUND_HDA_I915_H */
diff --git a/include/sound/hda_register.h b/include/sound/hda_register.h
index 4f6d3fce6ee6..0c7536e30fa4 100644
--- a/include/sound/hda_register.h
+++ b/include/sound/hda_register.h
@@ -84,6 +84,10 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
 #define AZX_REG_SD_BDLPL		0x18
 #define AZX_REG_SD_BDLPU		0x1c
 
+/* Haswell/Broadwell display HD-A controller Extended Mode registers */
+#define AZX_REG_HSW_EM4			0x100c
+#define AZX_REG_HSW_EM5			0x1010
+
 /* PCI space */
 #define AZX_PCIREG_TCSEL		0x44
 
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index b97c59eab7ab..64fff4db81bb 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -11,6 +11,7 @@
 #include <sound/core.h>
 #include <sound/memalloc.h>
 #include <sound/hda_verbs.h>
+#include <drm/i915_component.h>
 
 /* codec node id */
 typedef u16 hda_nid_t;
@@ -285,6 +286,10 @@ struct hdac_bus {
 	/* locks */
 	spinlock_t reg_lock;
 	struct mutex cmd_mutex;
+
+	/* i915 component interface */
+	struct i915_audio_component *audio_component;
+	int i915_power_refcount;
 };
 
 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,