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latency.c: use QoS infrastructure

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Replace latency.c use with pm_qos_params use.

Signed-off-by: mark gross <mgross@linux.intel.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mark Gross
2008-02-04 22:30:09 -08:00
committed by Linus Torvalds
parent d82b35186e
commit f011e2e2df
6 changed files with 26 additions and 322 deletions
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11
sound/core/pcm_native.c
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@ -23,7 +23,7 @@
#include <linux/file.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/latency.h>
#include <linux/pm_qos_params.h>
#include <linux/uio.h>
#include <sound/core.h>
#include <sound/control.h>
@ -443,9 +443,11 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
snd_pcm_timer_resolution_change(substream);
runtime->status->state = SNDRV_PCM_STATE_SETUP;
remove_acceptable_latency(substream->latency_id);
pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
substream->latency_id);
if ((usecs = period_to_usecs(runtime)) >= 0)
set_acceptable_latency(substream->latency_id, usecs);
pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY,
substream->latency_id, usecs);
return 0;
_error:
/* hardware might be unuseable from this time,
@ -505,7 +507,8 @@ static int snd_pcm_hw_free(struct snd_pcm_substream *substream)
if (substream->ops->hw_free)
result = substream->ops->hw_free(substream);
runtime->status->state = SNDRV_PCM_STATE_OPEN;
remove_acceptable_latency(substream->latency_id);
pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
substream->latency_id);
return result;
}