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46 lines
1.4 KiB
46 lines
1.4 KiB
/* 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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void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex); |
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int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr, |
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unsigned int cmd, unsigned int *res); |
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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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