mirror of https://gitee.com/openkylin/linux.git
ALSA: hda - Implement snd_hda_power_sync() helper function
Added a new helper function snd_hda_power_sync() to trigger the power-saving manually. It's an inline function call to snd_hda_power_save() helper function. Together with this addition, snd_hda_power_up*() and snd_hda_power_down() functions are inlined to a call of the same snd_hda_power_save() helper function. Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
b244d33560
commit
c376e2c72b
|
|
@ -4411,20 +4411,16 @@ void snd_hda_update_power_acct(struct hda_codec *codec)
|
|||
/* Transition to powered up, if wait_power_down then wait for a pending
|
||||
* transition to D3 to complete. A pending D3 transition is indicated
|
||||
* with power_transition == -1. */
|
||||
/* call this with codec->power_lock held! */
|
||||
static void __snd_hda_power_up(struct hda_codec *codec, bool wait_power_down)
|
||||
{
|
||||
struct hda_bus *bus = codec->bus;
|
||||
|
||||
spin_lock(&codec->power_lock);
|
||||
codec->power_count++;
|
||||
trace_hda_power_count(codec);
|
||||
/* Return if power_on or transitioning to power_on, unless currently
|
||||
* powering down. */
|
||||
if ((codec->power_on || codec->power_transition > 0) &&
|
||||
!(wait_power_down && codec->power_transition < 0)) {
|
||||
spin_unlock(&codec->power_lock);
|
||||
!(wait_power_down && codec->power_transition < 0))
|
||||
return;
|
||||
}
|
||||
spin_unlock(&codec->power_lock);
|
||||
|
||||
cancel_delayed_work_sync(&codec->power_work);
|
||||
|
|
@ -4433,10 +4429,9 @@ static void __snd_hda_power_up(struct hda_codec *codec, bool wait_power_down)
|
|||
/* If the power down delayed work was cancelled above before starting,
|
||||
* then there is no need to go through power up here.
|
||||
*/
|
||||
if (codec->power_on) {
|
||||
spin_unlock(&codec->power_lock);
|
||||
if (codec->power_on)
|
||||
return;
|
||||
}
|
||||
|
||||
trace_hda_power_up(codec);
|
||||
snd_hda_update_power_acct(codec);
|
||||
codec->power_on = 1;
|
||||
|
|
@ -4450,66 +4445,45 @@ static void __snd_hda_power_up(struct hda_codec *codec, bool wait_power_down)
|
|||
|
||||
spin_lock(&codec->power_lock);
|
||||
codec->power_transition = 0;
|
||||
spin_unlock(&codec->power_lock);
|
||||
}
|
||||
|
||||
/**
|
||||
* snd_hda_power_up - Power-up the codec
|
||||
* @codec: HD-audio codec
|
||||
*
|
||||
* Increment the power-up counter and power up the hardware really when
|
||||
* not turned on yet.
|
||||
*/
|
||||
void snd_hda_power_up(struct hda_codec *codec)
|
||||
{
|
||||
__snd_hda_power_up(codec, false);
|
||||
}
|
||||
EXPORT_SYMBOL_HDA(snd_hda_power_up);
|
||||
|
||||
/**
|
||||
* snd_hda_power_up_d3wait - Power-up the codec after waiting for any pending
|
||||
* D3 transition to complete. This differs from snd_hda_power_up() when
|
||||
* power_transition == -1. snd_hda_power_up sees this case as a nop,
|
||||
* snd_hda_power_up_d3wait waits for the D3 transition to complete then powers
|
||||
* back up.
|
||||
* @codec: HD-audio codec
|
||||
*
|
||||
* Cancel any power down operation hapenning on the work queue, then power up.
|
||||
*/
|
||||
void snd_hda_power_up_d3wait(struct hda_codec *codec)
|
||||
{
|
||||
/* This will cancel and wait for pending power_work to complete. */
|
||||
__snd_hda_power_up(codec, true);
|
||||
}
|
||||
EXPORT_SYMBOL_HDA(snd_hda_power_up_d3wait);
|
||||
|
||||
#define power_save(codec) \
|
||||
((codec)->bus->power_save ? *(codec)->bus->power_save : 0)
|
||||
|
||||
/**
|
||||
* snd_hda_power_down - Power-down the codec
|
||||
* @codec: HD-audio codec
|
||||
*
|
||||
* Decrement the power-up counter and schedules the power-off work if
|
||||
* the counter rearches to zero.
|
||||
*/
|
||||
void snd_hda_power_down(struct hda_codec *codec)
|
||||
/* Transition to powered down */
|
||||
static void __snd_hda_power_down(struct hda_codec *codec)
|
||||
{
|
||||
spin_lock(&codec->power_lock);
|
||||
--codec->power_count;
|
||||
trace_hda_power_count(codec);
|
||||
if (!codec->power_on || codec->power_count || codec->power_transition) {
|
||||
spin_unlock(&codec->power_lock);
|
||||
if (!codec->power_on || codec->power_count || codec->power_transition)
|
||||
return;
|
||||
}
|
||||
|
||||
if (power_save(codec)) {
|
||||
codec->power_transition = -1; /* avoid reentrance */
|
||||
queue_delayed_work(codec->bus->workq, &codec->power_work,
|
||||
msecs_to_jiffies(power_save(codec) * 1000));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* snd_hda_power_save - Power-up/down/sync the codec
|
||||
* @codec: HD-audio codec
|
||||
* @delta: the counter delta to change
|
||||
*
|
||||
* Change the power-up counter via @delta, and power up or down the hardware
|
||||
* appropriately. For the power-down, queue to the delayed action.
|
||||
* Passing zero to @delta means to synchronize the power state.
|
||||
*/
|
||||
void snd_hda_power_save(struct hda_codec *codec, int delta, bool d3wait)
|
||||
{
|
||||
spin_lock(&codec->power_lock);
|
||||
codec->power_count += delta;
|
||||
trace_hda_power_count(codec);
|
||||
if (delta > 0)
|
||||
__snd_hda_power_up(codec, d3wait);
|
||||
else
|
||||
__snd_hda_power_down(codec);
|
||||
spin_unlock(&codec->power_lock);
|
||||
}
|
||||
EXPORT_SYMBOL_HDA(snd_hda_power_down);
|
||||
EXPORT_SYMBOL_HDA(snd_hda_power_save);
|
||||
|
||||
/**
|
||||
* snd_hda_check_amp_list_power - Check the amp list and update the power
|
||||
|
|
|
|||
|
|
@ -1062,16 +1062,64 @@ const char *snd_hda_get_jack_location(u32 cfg);
|
|||
* power saving
|
||||
*/
|
||||
#ifdef CONFIG_SND_HDA_POWER_SAVE
|
||||
void snd_hda_power_up(struct hda_codec *codec);
|
||||
void snd_hda_power_up_d3wait(struct hda_codec *codec);
|
||||
void snd_hda_power_down(struct hda_codec *codec);
|
||||
void snd_hda_power_save(struct hda_codec *codec, int delta, bool d3wait);
|
||||
void snd_hda_update_power_acct(struct hda_codec *codec);
|
||||
#else
|
||||
static inline void snd_hda_power_up(struct hda_codec *codec) {}
|
||||
static inline void snd_hda_power_up_d3wait(struct hda_codec *codec) {}
|
||||
static inline void snd_hda_power_down(struct hda_codec *codec) {}
|
||||
static inline void snd_hda_power_save(struct hda_codec *codec, int delta,
|
||||
bool d3wait) {}
|
||||
#endif
|
||||
|
||||
/**
|
||||
* snd_hda_power_up - Power-up the codec
|
||||
* @codec: HD-audio codec
|
||||
*
|
||||
* Increment the power-up counter and power up the hardware really when
|
||||
* not turned on yet.
|
||||
*/
|
||||
static inline void snd_hda_power_up(struct hda_codec *codec)
|
||||
{
|
||||
snd_hda_power_save(codec, 1, false);
|
||||
}
|
||||
|
||||
/**
|
||||
* snd_hda_power_up_d3wait - Power-up the codec after waiting for any pending
|
||||
* D3 transition to complete. This differs from snd_hda_power_up() when
|
||||
* power_transition == -1. snd_hda_power_up sees this case as a nop,
|
||||
* snd_hda_power_up_d3wait waits for the D3 transition to complete then powers
|
||||
* back up.
|
||||
* @codec: HD-audio codec
|
||||
*
|
||||
* Cancel any power down operation hapenning on the work queue, then power up.
|
||||
*/
|
||||
static inline void snd_hda_power_up_d3wait(struct hda_codec *codec)
|
||||
{
|
||||
snd_hda_power_save(codec, 1, true);
|
||||
}
|
||||
|
||||
/**
|
||||
* snd_hda_power_down - Power-down the codec
|
||||
* @codec: HD-audio codec
|
||||
*
|
||||
* Decrement the power-up counter and schedules the power-off work if
|
||||
* the counter rearches to zero.
|
||||
*/
|
||||
static inline void snd_hda_power_down(struct hda_codec *codec)
|
||||
{
|
||||
snd_hda_power_save(codec, -1, false);
|
||||
}
|
||||
|
||||
/**
|
||||
* snd_hda_power_sync - Synchronize the power-save status
|
||||
* @codec: HD-audio codec
|
||||
*
|
||||
* Synchronize the actual power state with the power account;
|
||||
* called when power_save parameter is changed
|
||||
*/
|
||||
static inline void snd_hda_power_sync(struct hda_codec *codec)
|
||||
{
|
||||
snd_hda_power_save(codec, 0, false);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SND_HDA_PATCH_LOADER
|
||||
/*
|
||||
* patch firmware
|
||||
|
|
|
|||
Loading…
Reference in New Issue