ALSA: hda - Add tracepoints to HD-audio controller driver
Add a couple of tracepoints to snd-hda-intel for tracing the position
and the trigger timings.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index d96a14e..d7481f0 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -527,6 +527,9 @@
struct list_head list;
};
+#define CREATE_TRACE_POINTS
+#include "hda_intel_trace.h"
+
/* driver types */
enum {
AZX_DRIVER_ICH,
@@ -2059,6 +2062,9 @@
int rstart = 0, start, nsync = 0, sbits = 0;
int nwait, timeout;
+ azx_dev = get_azx_dev(substream);
+ trace_azx_pcm_trigger(chip, azx_dev, cmd);
+
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
rstart = 1;
@@ -2231,6 +2237,7 @@
{
unsigned int pos;
int stream = azx_dev->substream->stream;
+ int delay = 0;
switch (chip->position_fix[stream]) {
case POS_FIX_LPIB:
@@ -2264,7 +2271,6 @@
chip->position_fix[stream] == POS_FIX_POSBUF &&
(chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
unsigned int lpib_pos = azx_sd_readl(azx_dev, SD_LPIB);
- int delay;
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
delay = pos - lpib_pos;
else
@@ -2279,6 +2285,7 @@
azx_dev->substream->runtime->delay =
bytes_to_frames(azx_dev->substream->runtime, delay);
}
+ trace_azx_get_position(chip, azx_dev, pos, delay);
return pos;
}