projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 7639a06c TI |
1 | /* |
| 2 | * Local helper macros and functions for HD-audio core drivers | |
| 3 | */ | |
| 4 | ||
| 5 | #ifndef __HDAC_LOCAL_H | |
| 6 | #define __HDAC_LOCAL_H | |
| 7 | ||
| 8 | #define get_wcaps(codec, nid) \ | |
| 9 | snd_hdac_read_parm(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) | |
| 10 | ||
| 11 | /* get the widget type from widget capability bits */ | |
| 12 | static inline int get_wcaps_type(unsigned int wcaps) | |
| 13 | { | |
| 14 | if (!wcaps) | |
| 15 | return -1; /* invalid type */ | |
| 16 | return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT; | |
| 17 | } | |
| 18 | ||
| 9fc7c862 SP |
19 | static inline unsigned int get_wcaps_channels(u32 wcaps) |
| 20 | { | |
| 21 | unsigned int chans; | |
| 22 | ||
| 23 | chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13; | |
| 24 | chans = (chans + 1) * 2; | |
| 25 | ||
| 26 | return chans; | |
| 27 | } | |
| 28 | ||
| 3256be65 TI |
29 | extern const struct attribute_group *hdac_dev_attr_groups[]; |
| 30 | int hda_widget_sysfs_init(struct hdac_device *codec); | |
| 31 | void hda_widget_sysfs_exit(struct hdac_device *codec); | |
| 32 | ||
| 7639a06c | 33 | #endif /* __HDAC_LOCAL_H */ |