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>

1 files changed, 8 insertions, 1 deletions

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index d96a14e1fa95..d7481f0c194a 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -527,6 +527,9 @@ struct azx {
         struct list_head list;
 };
 
+#define CREATE_TRACE_POINTS
+#include "hda_intel_trace.h"
+
 /* driver types */
 enum {
         AZX_DRIVER_ICH,
@@ -2059,6 +2062,9 @@ static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
         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 @@ static unsigned int azx_get_position(struct azx *chip,
 {
         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 @@ static unsigned int azx_get_position(struct azx *chip,
             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 @@ static unsigned int azx_get_position(struct azx *chip,
                 azx_dev->substream->runtime->delay =
                         bytes_to_frames(azx_dev->substream->runtime, delay);
         }
+        trace_azx_get_position(chip, azx_dev, pos, delay);
         return pos;
 }