| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Local helper macros and functions for HD-audio core drivers |
| 4 | */ |
| 5 | |
| 6 | #ifndef __HDAC_LOCAL_H |
| 7 | #define __HDAC_LOCAL_H |
| 8 | |
| 9 | #define get_wcaps(codec, nid) \ |
| 10 | snd_hdac_read_parm(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) |
| 11 | |
| 12 | /* get the widget type from widget capability bits */ |
| 13 | static inline int get_wcaps_type(unsigned int wcaps) |
| 14 | { |
| 15 | if (!wcaps) |
| 16 | return -1; /* invalid type */ |
| 17 | return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT; |
| 18 | } |
| 19 | |
| 20 | static inline unsigned int get_wcaps_channels(u32 wcaps) |
| 21 | { |
| 22 | unsigned int chans; |
| 23 | |
| 24 | chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13; |
| 25 | chans = (chans + 1) * 2; |
| 26 | |
| 27 | return chans; |
| 28 | } |
| 29 | |
| 30 | extern const struct attribute_group *hdac_dev_attr_groups[]; |
| 31 | int hda_widget_sysfs_init(struct hdac_device *codec); |
| 32 | int hda_widget_sysfs_reinit(struct hdac_device *codec, hda_nid_t start_nid, |
| 33 | int num_nodes); |
| 34 | void hda_widget_sysfs_exit(struct hdac_device *codec); |
| 35 | |
| 36 | #endif /* __HDAC_LOCAL_H */ |