diff options
Diffstat (limited to 'include/sound/hdaudio.h')
| -rw-r--r-- | include/sound/hdaudio.h | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index b098ceadbe74..d38234f8fe44 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -223,7 +223,7 @@ struct hdac_driver { struct device_driver driver; int type; const struct hda_device_id *id_table; - int (*match)(struct hdac_device *dev, struct hdac_driver *drv); + int (*match)(struct hdac_device *dev, const struct hdac_driver *drv); void (*unsol_event)(struct hdac_device *dev, unsigned int event); /* fields used by ext bus APIs */ @@ -235,7 +235,7 @@ struct hdac_driver { #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver) const struct hda_device_id * -hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv); +hdac_get_device_id(struct hdac_device *hdev, const struct hdac_driver *drv); /* * Bus verb operators @@ -598,8 +598,6 @@ void snd_hdac_stream_spbcap_enable(struct hdac_bus *chip, bool enable, int index); int snd_hdac_stream_set_spib(struct hdac_bus *bus, struct hdac_stream *azx_dev, u32 value); -int snd_hdac_stream_get_spbmaxfifo(struct hdac_bus *bus, - struct hdac_stream *azx_dev); void snd_hdac_stream_drsm_enable(struct hdac_bus *bus, bool enable, int index); int snd_hdac_stream_wait_drsm(struct hdac_stream *azx_dev); @@ -682,6 +680,30 @@ static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, } #endif /* CONFIG_SND_HDA_DSP_LOADER */ +/* + * Easy macros for widget capabilities + */ +#define snd_hdac_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 snd_hdac_get_wcaps_type(unsigned int wcaps) +{ + if (!wcaps) + return -1; /* invalid type */ + return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT; +} + +/* get the number of supported channels */ +static inline unsigned int snd_hdac_get_wcaps_channels(u32 wcaps) +{ + unsigned int chans; + + chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13; + chans = (chans + 1) * 2; + + return chans; +} /* * generic array helpers |