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ALSA: hda - add hdac stream trace 

Add the trace of snd_hdac_stream_start and snd_hdac_stream_stop.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Libin Yang 2015-05-12 09:43:20 +08:00 committed by Takashi Iwai
parent 5c03be00cd
commit 598dfb56b0
2 changed files with 32 additions and 0 deletions
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5
sound/hda/hdac_stream.c
View File

@ -10,6 +10,7 @@
#include <sound/pcm.h>
#include <sound/hdaudio.h>
#include <sound/hda_register.h>
#include "trace.h"
/**
* snd_hdac_stream_init - initialize each stream (aka device)
@ -48,6 +49,8 @@ void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start)
{
struct hdac_bus *bus = azx_dev->bus;
trace_snd_hdac_stream_start(bus, azx_dev);
azx_dev->start_wallclk = snd_hdac_chip_readl(bus, WALLCLK);
if (!fresh_start)
azx_dev->start_wallclk -= azx_dev->period_wallclk;
@ -82,6 +85,8 @@ EXPORT_SYMBOL_GPL(snd_hdac_stream_clear);
*/
void snd_hdac_stream_stop(struct hdac_stream *azx_dev)
{
trace_snd_hdac_stream_stop(azx_dev->bus, azx_dev);
snd_hdac_stream_clear(azx_dev);
/* disable SIE */
snd_hdac_chip_updatel(azx_dev->bus, INTCTL, 1 << azx_dev->index, 0);

27
sound/hda/trace.h
View File

@ -50,6 +50,33 @@ TRACE_EVENT(hda_unsol_event,
),
TP_printk("%s", __get_str(msg))
);
DECLARE_EVENT_CLASS(hdac_stream,
TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev),
TP_ARGS(bus, azx_dev),
TP_STRUCT__entry(
__field(unsigned char, stream_tag)
),
TP_fast_assign(
__entry->stream_tag = (azx_dev)->stream_tag;
),
TP_printk("stream_tag: %d", __entry->stream_tag)
);
DEFINE_EVENT(hdac_stream, snd_hdac_stream_start,
TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev),
TP_ARGS(bus, azx_dev)
);
DEFINE_EVENT(hdac_stream, snd_hdac_stream_stop,
TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev),
TP_ARGS(bus, azx_dev)
);
#endif /* __HDAC_TRACE_H */
/* This part must be outside protection */