Commit 598dfb56 authored by Libin Yang's avatar Libin Yang Committed by Takashi Iwai
Browse files

ALSA: hda - add hdac stream trace 



Add the trace of snd_hdac_stream_start and snd_hdac_stream_stop.

Signed-off-by: default avatarLibin Yang <libin.yang@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 5c03be00

sound/hda/hdac_stream.c

+5 −0
Original line number Diff line number Diff line
@@ -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);

sound/hda/trace.h

+27 −0
Original line number Diff line number Diff line
@@ -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 */