/* * Local helper macros and functions for HD-audio core drivers */ #ifndef __HDAC_LOCAL_H #define __HDAC_LOCAL_H #define 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 get_wcaps_type(unsigned int wcaps) { if (!wcaps) return -1; /* invalid type */ return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT; } static inline unsigned int get_wcaps_channels(u32 wcaps) { unsigned int chans; chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13; chans = (chans + 1) * 2; return chans; } extern const struct attribute_group *hdac_dev_attr_groups[]; int hda_widget_sysfs_init(struct hdac_device *codec); void hda_widget_sysfs_exit(struct hdac_device *codec); #endif /* __HDAC_LOCAL_H */ t/'>net-next.git
net-next plumbingsTobias Klauser
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