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--- a/drivers/alsa/alsa_driver.c 2009-05-06 06:36:08.000000000 +1000
+++ b/drivers/alsa/alsa_driver.c 2010-07-28 21:02:57.238101024 +1000
@@ -2388,7 +2388,7 @@
strcpy (params[i].name, "period");
params[i].character = 'p';
params[i].type = JackDriverParamUInt;
- params[i].value.ui = 1024U;
+ params[i].value.ui = 256U; /* TWL4030 capture. */
strcpy (params[i].short_desc, "Frames per period");
strcpy (params[i].long_desc, params[i].short_desc);
@@ -2396,7 +2396,7 @@
strcpy (params[i].name, "nperiods");
params[i].character = 'n';
params[i].type = JackDriverParamUInt;
- params[i].value.ui = 2U;
+ params[i].value.ui = 4U; /* TWL4030 capture. */
strcpy (params[i].short_desc, "Number of periods of playback latency");
strcpy (params[i].long_desc, params[i].short_desc);
@@ -2518,8 +2518,8 @@
driver_initialize (jack_client_t *client, const JSList * params)
{
jack_nframes_t srate = 48000;
- jack_nframes_t frames_per_interrupt = 1024;
- unsigned long user_nperiods = 2;
+ jack_nframes_t frames_per_interrupt = 256; /* TWL4030 needs small number of frames here. */
+ unsigned long user_nperiods = 4; /* TWL4030 needs 4 periods to avoid XRuns. */
char *playback_pcm_name = "hw:0";
char *capture_pcm_name = "hw:0";
int hw_monitoring = FALSE;
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