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 */
get_wcaps_type(unsigned int wcaps)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
get_wcaps_channels(u32 wcaps)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 int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
37 void snd_hdac_bus_remove_device(struct hdac_bus *bus,
38 struct hdac_device *codec);
39
40 int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
41 unsigned int flags, unsigned int *res);
42
43 #endif /* __HDAC_LOCAL_H */
44
