ALSA: hdac: add extended device driver registration
This adds new extended driver objects and API for registering the extended devices. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -173,5 +173,20 @@ struct hdac_ext_device {
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#define to_ehdac_device(dev) (container_of((dev), \
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struct hdac_ext_device, hdac))
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/*
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* HD-audio codec base driver
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*/
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struct hdac_ext_driver {
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struct hdac_driver hdac;
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int (*probe)(struct hdac_ext_device *dev);
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int (*remove)(struct hdac_ext_device *dev);
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void (*shutdown)(struct hdac_ext_device *dev);
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};
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int snd_hda_ext_driver_register(struct hdac_ext_driver *drv);
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void snd_hda_ext_driver_unregister(struct hdac_ext_driver *drv);
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#define to_ehdac_driver(_drv) container_of(_drv, struct hdac_ext_driver, hdac)
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#endif /* __SOUND_HDAUDIO_EXT_H */
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@ -196,3 +196,69 @@ void snd_hdac_ext_bus_device_remove(struct hdac_ext_bus *ebus)
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}
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}
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EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_remove);
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#define dev_to_hdac(dev) (container_of((dev), \
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struct hdac_device, dev))
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static inline struct hdac_ext_driver *get_edrv(struct device *dev)
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{
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struct hdac_driver *hdrv = drv_to_hdac_driver(dev->driver);
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struct hdac_ext_driver *edrv = to_ehdac_driver(hdrv);
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return edrv;
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}
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static inline struct hdac_ext_device *get_edev(struct device *dev)
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{
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struct hdac_device *hdev = dev_to_hdac_dev(dev);
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struct hdac_ext_device *edev = to_ehdac_device(hdev);
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return edev;
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}
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static int hda_ext_drv_probe(struct device *dev)
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{
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return (get_edrv(dev))->probe(get_edev(dev));
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}
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static int hdac_ext_drv_remove(struct device *dev)
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{
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return (get_edrv(dev))->remove(get_edev(dev));
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}
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static void hdac_ext_drv_shutdown(struct device *dev)
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{
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return (get_edrv(dev))->shutdown(get_edev(dev));
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}
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/**
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* snd_hda_ext_driver_register - register a driver for ext hda devices
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*
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* @drv: ext hda driver structure
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*/
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int snd_hda_ext_driver_register(struct hdac_ext_driver *drv)
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{
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drv->hdac.type = HDA_DEV_ASOC;
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drv->hdac.driver.bus = &snd_hda_bus_type;
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/* we use default match */
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if (drv->probe)
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drv->hdac.driver.probe = hda_ext_drv_probe;
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if (drv->remove)
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drv->hdac.driver.remove = hdac_ext_drv_remove;
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if (drv->shutdown)
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drv->hdac.driver.shutdown = hdac_ext_drv_shutdown;
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return driver_register(&drv->hdac.driver);
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}
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EXPORT_SYMBOL_GPL(snd_hda_ext_driver_register);
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/**
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* snd_hda_ext_driver_unregister - unregister a driver for ext hda devices
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*
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* @drv: ext hda driver structure
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*/
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void snd_hda_ext_driver_unregister(struct hdac_ext_driver *drv)
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{
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driver_unregister(&drv->hdac.driver);
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}
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EXPORT_SYMBOL_GPL(snd_hda_ext_driver_unregister);
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