diff options
Diffstat (limited to 'sound/hda/local.h')
| -rw-r--r-- | sound/hda/local.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/hda/local.h b/sound/hda/local.h new file mode 100644 index 0000000000..896ba142e8 --- /dev/null +++ b/sound/hda/local.h @@ -0,0 +1,46 @@ +/* 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); + +int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec); +void snd_hdac_bus_remove_device(struct hdac_bus *bus, + struct hdac_device *codec); +void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex); +int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr, + unsigned int cmd, unsigned int *res); + +int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, + unsigned int flags, unsigned int *res); + +#endif /* __HDAC_LOCAL_H */ |