e3d280fc6d
Define the common hd-audio driver and device types to bind over snd_hda_bus_type publicly. This allows to implement other type of device and driver code over hd-audio bus. Now both struct hda_codec and struct hda_codec_driver inherit these new struct hdac_device and struct hdac_driver, respectively. The bus registration is done in subsys_initcall() to assure it before any other driver registrations. Signed-off-by: Takashi Iwai <tiwai@suse.de>
43 lines
843 B
C
43 lines
843 B
C
/*
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* HD-audio bus
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*/
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/export.h>
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#include <sound/hdaudio.h>
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MODULE_DESCRIPTION("HD-audio bus");
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MODULE_LICENSE("GPL");
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static int hda_bus_match(struct device *dev, struct device_driver *drv)
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{
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struct hdac_device *hdev = dev_to_hdac_dev(dev);
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struct hdac_driver *hdrv = drv_to_hdac_driver(drv);
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if (hdev->type != hdrv->type)
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return 0;
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if (hdrv->match)
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return hdrv->match(hdev, hdrv);
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return 1;
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}
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struct bus_type snd_hda_bus_type = {
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.name = "hdaudio",
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.match = hda_bus_match,
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};
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EXPORT_SYMBOL_GPL(snd_hda_bus_type);
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static int __init hda_bus_init(void)
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{
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return bus_register(&snd_hda_bus_type);
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}
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static void __exit hda_bus_exit(void)
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{
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bus_unregister(&snd_hda_bus_type);
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}
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subsys_initcall(hda_bus_init);
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module_exit(hda_bus_exit);
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