44 строки
1.2 KiB
C
44 строки
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Local helper macros and functions for HD-audio core drivers
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*/
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#ifndef __HDAC_LOCAL_H
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#define __HDAC_LOCAL_H
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#define get_wcaps(codec, nid) \
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snd_hdac_read_parm(codec, nid, AC_PAR_AUDIO_WIDGET_CAP)
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/* get the widget type from widget capability bits */
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static inline int get_wcaps_type(unsigned int wcaps)
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{
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if (!wcaps)
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return -1; /* invalid type */
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return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
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}
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static inline unsigned int get_wcaps_channels(u32 wcaps)
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{
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unsigned int chans;
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chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13;
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chans = (chans + 1) * 2;
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return chans;
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}
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extern const struct attribute_group *hdac_dev_attr_groups[];
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int hda_widget_sysfs_init(struct hdac_device *codec);
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int hda_widget_sysfs_reinit(struct hdac_device *codec, hda_nid_t start_nid,
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int num_nodes);
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void hda_widget_sysfs_exit(struct hdac_device *codec);
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int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
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void snd_hdac_bus_remove_device(struct hdac_bus *bus,
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struct hdac_device *codec);
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int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
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unsigned int flags, unsigned int *res);
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#endif /* __HDAC_LOCAL_H */
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