diff options
Diffstat (limited to 'sound/hda/hdac_controller.c')
| -rw-r--r-- | sound/hda/hdac_controller.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c index bc4a8b606020..011b17cc1efa 100644 --- a/sound/hda/hdac_controller.c +++ b/sound/hda/hdac_controller.c @@ -9,6 +9,7 @@ #include <sound/core.h> #include <sound/hdaudio.h> #include <sound/hda_register.h> +#include "local.h" /* clear CORB read pointer properly */ static void azx_clear_corbrp(struct hdac_bus *bus) @@ -527,6 +528,18 @@ bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset) } bus->chip_init = true; + + /* + * Default value of '8' is as per the HD audio specification (Rev 1.0a). + * Following relation is used to derive STRIPE control value. + * For sample rate <= 48K: + * { ((num_channels * bits_per_sample) / number of SDOs) >= 8 } + * For sample rate > 48K: + * { ((num_channels * bits_per_sample * rate/48000) / + * number of SDOs) >= 8 } + */ + bus->sdo_limit = 8; + return true; } EXPORT_SYMBOL_GPL(snd_hdac_bus_init_chip); |