| Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 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 | |
| Subhransu S. Prusty | 9fc7c86 | 2016-04-14 10:07:29 +0530 | [diff] [blame] | 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 | |
| Takashi Iwai | 3256be6 | 2015-02-24 14:59:42 +0100 | [diff] [blame] | 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 | |
| Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 33 | #endif /* __HDAC_LOCAL_H */ |