mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
a57942bfdd
This is the final step for more generic support of DRM audio component. The generic audio component code is now moved to its own file, and the symbols are renamed from snd_hac_i915_* to snd_hdac_acomp_*, respectively. The generic code is enabled via the new kconfig, CONFIG_SND_HDA_COMPONENT, while CONFIG_SND_HDA_I915 is kept as the super-class. Along with the split, three new callbacks are added to audio_ops: pin2port is for providing the conversion between the pin number and the widget id, and master_bind/master_unbin are called at binding / unbinding the master component, respectively. All these are optional, but used in i915 implementation and also other later implementations. A note about the new snd_hdac_acomp_init() function: there is a slight difference between this and the old snd_hdac_i915_init(). The latter (still) synchronizes with the master component binding, i.e. it assures that the relevant DRM component gets bound when it returns, or gives a negative error. Meanwhile the new function doesn't synchronize but just leaves as is. It's the responsibility by the caller's side to synchronize, or the caller may accept the asynchronous binding on the fly. v1->v2: Fix missing NULL check in master_bind/unbind Signed-off-by: Takashi Iwai <tiwai@suse.de>
27 lines
589 B
C
27 lines
589 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* HD-Audio helpers to sync with i915 driver
|
|
*/
|
|
#ifndef __SOUND_HDA_I915_H
|
|
#define __SOUND_HDA_I915_H
|
|
|
|
#include "hda_component.h"
|
|
|
|
#ifdef CONFIG_SND_HDA_I915
|
|
void snd_hdac_i915_set_bclk(struct hdac_bus *bus);
|
|
int snd_hdac_i915_init(struct hdac_bus *bus);
|
|
#else
|
|
static inline void snd_hdac_i915_set_bclk(struct hdac_bus *bus)
|
|
{
|
|
}
|
|
static inline int snd_hdac_i915_init(struct hdac_bus *bus)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
static inline int snd_hdac_i915_exit(struct hdac_bus *bus)
|
|
{
|
|
return snd_hdac_acomp_exit(bus);
|
|
}
|
|
|
|
#endif /* __SOUND_HDA_I915_H */
|