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author | Vinod Koul <vinod.koul@intel.com> | 2015-08-21 15:47:42 +0530 |
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committer | Takashi Iwai <tiwai@suse.de> | 2015-08-21 12:34:02 +0200 |
commit | d51783c15f7548229e49331d254a738be8ac865c (patch) | |
tree | 5417516e6bbab6720a2af68882a21d52b8a050bd | |
parent | a512f5611646ab12f3f8fea2a3d2582adabe5157 (diff) | |
download | op-kernel-dev-d51783c15f7548229e49331d254a738be8ac865c.zip op-kernel-dev-d51783c15f7548229e49331d254a738be8ac865c.tar.gz |
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>
-rw-r--r-- | include/sound/hdaudio_ext.h | 15 | ||||
-rw-r--r-- | sound/hda/ext/hdac_ext_bus.c | 66 |
2 files changed, 81 insertions, 0 deletions
diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h index 0641d00e..55e2fc3 100644 --- a/include/sound/hdaudio_ext.h +++ b/include/sound/hdaudio_ext.h @@ -173,5 +173,20 @@ struct hdac_ext_device { #define to_ehdac_device(dev) (container_of((dev), \ struct hdac_ext_device, hdac)) +/* + * HD-audio codec base driver + */ +struct hdac_ext_driver { + struct hdac_driver hdac; + + int (*probe)(struct hdac_ext_device *dev); + int (*remove)(struct hdac_ext_device *dev); + void (*shutdown)(struct hdac_ext_device *dev); +}; + +int snd_hda_ext_driver_register(struct hdac_ext_driver *drv); +void snd_hda_ext_driver_unregister(struct hdac_ext_driver *drv); + +#define to_ehdac_driver(_drv) container_of(_drv, struct hdac_ext_driver, hdac) #endif /* __SOUND_HDAUDIO_EXT_H */ diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c index 94fb987..8544e4f 100644 --- a/sound/hda/ext/hdac_ext_bus.c +++ b/sound/hda/ext/hdac_ext_bus.c @@ -196,3 +196,69 @@ void snd_hdac_ext_bus_device_remove(struct hdac_ext_bus *ebus) } } EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_remove); +#define dev_to_hdac(dev) (container_of((dev), \ + struct hdac_device, dev)) + +static inline struct hdac_ext_driver *get_edrv(struct device *dev) +{ + struct hdac_driver *hdrv = drv_to_hdac_driver(dev->driver); + struct hdac_ext_driver *edrv = to_ehdac_driver(hdrv); + + return edrv; +} + +static inline struct hdac_ext_device *get_edev(struct device *dev) +{ + struct hdac_device *hdev = dev_to_hdac_dev(dev); + struct hdac_ext_device *edev = to_ehdac_device(hdev); + + return edev; +} + +static int hda_ext_drv_probe(struct device *dev) +{ + return (get_edrv(dev))->probe(get_edev(dev)); +} + +static int hdac_ext_drv_remove(struct device *dev) +{ + return (get_edrv(dev))->remove(get_edev(dev)); +} + +static void hdac_ext_drv_shutdown(struct device *dev) +{ + return (get_edrv(dev))->shutdown(get_edev(dev)); +} + +/** + * snd_hda_ext_driver_register - register a driver for ext hda devices + * + * @drv: ext hda driver structure + */ +int snd_hda_ext_driver_register(struct hdac_ext_driver *drv) +{ + drv->hdac.type = HDA_DEV_ASOC; + drv->hdac.driver.bus = &snd_hda_bus_type; + /* we use default match */ + + if (drv->probe) + drv->hdac.driver.probe = hda_ext_drv_probe; + if (drv->remove) + drv->hdac.driver.remove = hdac_ext_drv_remove; + if (drv->shutdown) + drv->hdac.driver.shutdown = hdac_ext_drv_shutdown; + + return driver_register(&drv->hdac.driver); +} +EXPORT_SYMBOL_GPL(snd_hda_ext_driver_register); + +/** + * snd_hda_ext_driver_unregister - unregister a driver for ext hda devices + * + * @drv: ext hda driver structure + */ +void snd_hda_ext_driver_unregister(struct hdac_ext_driver *drv) +{ + driver_unregister(&drv->hdac.driver); +} +EXPORT_SYMBOL_GPL(snd_hda_ext_driver_unregister); |