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 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 void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex); 40 int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr, 41 unsigned int cmd, unsigned int *res); 42 43 int 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