diff options
Diffstat (limited to 'include/sound/hdaudio.h')
| -rw-r--r-- | include/sound/hdaudio.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index 25668eee65cf..d38234f8fe44 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -680,6 +680,30 @@ static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, } #endif /* CONFIG_SND_HDA_DSP_LOADER */ +/* + * Easy macros for widget capabilities + */ +#define snd_hdac_get_wcaps(codec, nid) \ + snd_hdac_read_parm(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) + +/* get the widget type from widget capability bits */ +static inline int snd_hdac_get_wcaps_type(unsigned int wcaps) +{ + if (!wcaps) + return -1; /* invalid type */ + return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT; +} + +/* get the number of supported channels */ +static inline unsigned int snd_hdac_get_wcaps_channels(u32 wcaps) +{ + unsigned int chans; + + chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13; + chans = (chans + 1) * 2; + + return chans; +} /* * generic array helpers |