47 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Local helper macros and functions for HD-audio core drivers4 */5 6#ifndef __HDAC_LOCAL_H7#define __HDAC_LOCAL_H8 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 */13static 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 20static 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 30extern const struct attribute_group *hdac_dev_attr_groups[];31int hda_widget_sysfs_init(struct hdac_device *codec);32int hda_widget_sysfs_reinit(struct hdac_device *codec, hda_nid_t start_nid,33 int num_nodes);34void hda_widget_sysfs_exit(struct hdac_device *codec);35 36int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);37void snd_hdac_bus_remove_device(struct hdac_bus *bus,38 struct hdac_device *codec);39void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);40int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,41 unsigned int cmd, unsigned int *res);42 43int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,44 unsigned int flags, unsigned int *res);45 46#endif /* __HDAC_LOCAL_H */47