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ALSA: hda - allow codecs to access the i915 pin/ELD callback 

This lets the interested codec be notified when an i915 pin/ELD
event happens.

[tiwai: Fixed a trivial build error for CONFIG_SND_HDA_I915=n]

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
David Henningsson 2015-08-19 10:48:57 +02:00 committed by Takashi Iwai
parent 51e1d83cab
commit 45c053df5b
2 changed files with 17 additions and 0 deletions
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7
include/sound/hda_i915.h
View File

@ -4,12 +4,15 @@
#ifndef __SOUND_HDA_I915_H
#define __SOUND_HDA_I915_H
#include <drm/i915_component.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);
int snd_hdac_i915_register_notifier(const struct i915_audio_component_audio_ops *);
#else
static int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable)
{
@ -31,6 +34,10 @@ static inline int snd_hdac_i915_exit(struct hdac_bus *bus)
{
return 0;
}
static inline int snd_hdac_i915_register_notifier(const struct i915_audio_component_audio_ops *ops)
{
return -ENODEV;
}
#endif
#endif /* __SOUND_HDA_I915_H */

10
sound/hda/hdac_i915.c
View File

@ -134,6 +134,16 @@ static int hdac_component_master_match(struct device *dev, void *data)
return !strcmp(dev->driver->name, "i915");
}
int snd_hdac_i915_register_notifier(const struct i915_audio_component_audio_ops *aops)
{
if (WARN_ON(!hdac_acomp))
return -ENODEV;
hdac_acomp->audio_ops = aops;
return 0;
}
EXPORT_SYMBOL_GPL(snd_hdac_i915_register_notifier);
int snd_hdac_i915_init(struct hdac_bus *bus)
{
struct component_match *match = NULL;