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Commit a501dfa3 authored by Jaroslav Kysela's avatar Jaroslav Kysela
Browse files

[ALSA] Timer API - added SUSPEND/RESUME events 



PCM Midlevel,Timer Midlevel,ALSA Core
- added SNDRV_TIMER_EVENT_SUSPEND / RESUME events
- changed timer events from PAUSE / CONTINUE in PCM midlevel to SUSPEND / RESUME

Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 47123197

include/sound/asound.h

+5 −1
Original line number Diff line number Diff line
@@ -560,7 +560,7 @@ enum { 
 *  Timer section - /dev/snd/timer

 */



#define SNDRV_TIMER_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 4)

#define SNDRV_TIMER_VERSION		SNDRV_PROTOCOL_VERSION(2, 0, 5)



enum sndrv_timer_class {

	SNDRV_TIMER_CLASS_NONE = -1,
@@ -693,11 +693,15 @@ enum sndrv_timer_event { 
	SNDRV_TIMER_EVENT_CONTINUE,		/* val = resolution in ns */

	SNDRV_TIMER_EVENT_PAUSE,		/* val = 0 */

	SNDRV_TIMER_EVENT_EARLY,		/* val = 0, early event */

	SNDRV_TIMER_EVENT_SUSPEND,		/* val = 0 */

	SNDRV_TIMER_EVENT_RESUME,		/* val = 0 */

	/* master timer events for slave timer instances */

	SNDRV_TIMER_EVENT_MSTART = SNDRV_TIMER_EVENT_START + 10,

	SNDRV_TIMER_EVENT_MSTOP = SNDRV_TIMER_EVENT_STOP + 10,

	SNDRV_TIMER_EVENT_MCONTINUE = SNDRV_TIMER_EVENT_CONTINUE + 10,

	SNDRV_TIMER_EVENT_MPAUSE = SNDRV_TIMER_EVENT_PAUSE + 10,

	SNDRV_TIMER_EVENT_MSUSPEND = SNDRV_TIMER_EVENT_SUSPEND + 10,

	SNDRV_TIMER_EVENT_MRESUME = SNDRV_TIMER_EVENT_RESUME + 10,

};



struct sndrv_timer_tread {

sound/core/pcm_native.c

+2 −2
Original line number Diff line number Diff line
@@ -1025,7 +1025,7 @@ static void snd_pcm_post_suspend(snd_pcm_substream_t *substream, int state) 
	snd_pcm_runtime_t *runtime = substream->runtime;

	snd_pcm_trigger_tstamp(substream);

	if (substream->timer)

		snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MPAUSE, &runtime->trigger_tstamp);

		snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, &runtime->trigger_tstamp);

	runtime->status->suspended_state = runtime->status->state;

	runtime->status->state = SNDRV_PCM_STATE_SUSPENDED;

	snd_pcm_tick_set(substream, 0);
@@ -1115,7 +1115,7 @@ static void snd_pcm_post_resume(snd_pcm_substream_t *substream, int state) 
	snd_pcm_runtime_t *runtime = substream->runtime;

	snd_pcm_trigger_tstamp(substream);

	if (substream->timer)

		snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MCONTINUE, &runtime->trigger_tstamp);

		snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, &runtime->trigger_tstamp);

	runtime->status->state = runtime->status->suspended_state;

	if (runtime->sleep_min)

		snd_pcm_tick_prepare(substream);

sound/core/timer.c

+9 −3
Original line number Diff line number Diff line
@@ -880,9 +880,11 @@ void snd_timer_notify(snd_timer_t *timer, enum sndrv_timer_event event, struct t 
	struct list_head *p, *n;



	snd_runtime_check(timer->hw.flags & SNDRV_TIMER_HW_SLAVE, return);	

	snd_assert(event >= SNDRV_TIMER_EVENT_MSTART && event <= SNDRV_TIMER_EVENT_MPAUSE, return);

	snd_assert(event >= SNDRV_TIMER_EVENT_MSTART && event <= SNDRV_TIMER_EVENT_MRESUME, return);

	spin_lock_irqsave(&timer->lock, flags);

	if (event == SNDRV_TIMER_EVENT_MSTART || event == SNDRV_TIMER_EVENT_MCONTINUE) {

	if (event == SNDRV_TIMER_EVENT_MSTART ||

	    event == SNDRV_TIMER_EVENT_MCONTINUE ||

	    event == SNDRV_TIMER_EVENT_MRESUME) {

		if (timer->hw.c_resolution)

			resolution = timer->hw.c_resolution(timer);

		else
@@ -1555,10 +1557,14 @@ static int snd_timer_user_params(struct file *file, snd_timer_params_t __user *_ 
			      (1<<SNDRV_TIMER_EVENT_STOP)|

			      (1<<SNDRV_TIMER_EVENT_CONTINUE)|

			      (1<<SNDRV_TIMER_EVENT_PAUSE)|

			      (1<<SNDRV_TIMER_EVENT_SUSPEND)|

			      (1<<SNDRV_TIMER_EVENT_RESUME)|

			      (1<<SNDRV_TIMER_EVENT_MSTART)|

			      (1<<SNDRV_TIMER_EVENT_MSTOP)|

			      (1<<SNDRV_TIMER_EVENT_MCONTINUE)|

			      (1<<SNDRV_TIMER_EVENT_MPAUSE))) {

			      (1<<SNDRV_TIMER_EVENT_MPAUSE|

			      (1<<SNDRV_TIMER_EVENT_MSUSPEND|

			      (1<<SNDRV_TIMER_EVENT_MRESUME))) {

		err = -EINVAL;

		goto _end;

	}