| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * 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); |
| int hda_widget_sysfs_reinit(struct hdac_device *codec, hda_nid_t start_nid, |
| int num_nodes); |
| void hda_widget_sysfs_exit(struct hdac_device *codec); |
| |
| #endif /* __HDAC_LOCAL_H */ |
