/* * soundbus * * Copyright 2006 Johannes Berg * * GPL v2, can be found in COPYING. */ #include #include "soundbus.h" MODULE_AUTHOR("Johannes Berg "); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Apple Soundbus"); struct soundbus_dev *soundbus_dev_get(struct soundbus_dev *dev) { struct device *tmp; if (!dev) return NULL; tmp = get_device(&dev->ofdev.dev); if (tmp) return to_soundbus_device(tmp); else return NULL; } EXPORT_SYMBOL_GPL(soundbus_dev_get); void soundbus_dev_put(struct soundbus_dev *dev) { if (dev) put_device(&dev->ofdev.dev); } EXPORT_SYMBOL_GPL(soundbus_dev_put); static int soundbus_probe(struct device *dev) { int error = -ENODEV; struct soundbus_driver *drv; struct soundbus_dev *soundbus_dev; drv = to_soundbus_driver(dev->driver); soundbus_dev = to_soundbus_device(dev); if (!drv->probe) return error; soundbus_dev_get(soundbus_dev); error = drv->probe(soundbus_dev); if (error) soundbus_dev_put(soundbus_dev); return error; } static int soundbus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct soundbus_dev * soundbus_dev; struct platform_device * of; const char *compat; int retval = 0; int cplen, seen = 0; if (!dev) return -ENODEV; soundbus_dev = to_soundbus_device(dev); if (!soundbus_dev) return -ENODEV; of = &soundbus_dev->ofdev; /* stuff we want to pass to /sbin/hotplug */ retval = add_uevent_var(env, "OF_NAME=%s", of->dev.of_node->name); if (retval) return retval; retval = add_uevent_var(env, "OF_TYPE=%s", of->dev.of_node->type); if (retval) return retval; /* Since the compatible field can contain pretty much anything * it's not really legal to split it out with commas. We split it * up using a number of environment variables instead. */ compat = of_get_property(of->dev.of_node, "compatible", &cplen); while (compat && cplen > 0) { int tmp = env->buflen; retval = add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat); if (retval) return retval; compat += env->buflen - tmp; cplen -= env->buflen - tmp; seen += 1; } retval = add_uevent_var(env, "OF_COMPATIBLE_N=%d", seen); if (retval) return retval; retval = add_uevent_var(env, "MODALIAS=%s", soundbus_dev->modalias); return retval; } static int soundbus_device_remove(struct device *dev) { struct soundbus_dev * soundbus_dev = to_soundbus_device(dev); struct soundbus_driver * drv = to_soundbus_driver(dev->driver); if (dev->driver && drv->remove) drv->remove(soundbus_dev); soundbus_dev_put(soundbus_dev); return 0; } static void soundbus_device_shutdown(struct device *dev) { struct soundbus_dev * soundbus_dev = to_soundbus_device(dev); struct soundbus_driver * drv = to_soundbus_driver(dev->driver); if (dev->driver && drv->shutdown) drv->shutdown(soundbus_dev); } /* soundbus_dev_attrs is declared in sysfs.c */ ATTRIBUTE_GROUPS(soundbus_dev); static struct bus_type soundbus_bus_type = { .name = "aoa-soundbus", .probe = soundbus_probe, .uevent = soundbus_uevent, .remove = soundbus_device_remove, .shutdown = soundbus_device_shutdown, .dev_groups = soundbus_dev_groups, }; int soundbus_add_one(struct soundbus_dev *dev) { static int devcount; /* sanity checks */ if (!dev->attach_codec || !dev->ofdev.dev.of_node || dev->pcmname || dev->pcmid != -1) { printk(KERN_ERR "soundbus: adding device failed sanity check!\n"); return -EINVAL; } dev_set_name(&dev->ofdev.dev, "soundbus:%x", ++devcount); dev->ofdev.dev.bus = &soundbus_bus_type; return of_device_register(&dev->ofdev); } EXPORT_SYMBOL_GPL(soundbus_add_one); void soundbus_remove_one(struct soundbus_dev *dev) { of_device_unregister(&dev->ofdev); } EXPORT_SYMBOL_GPL(soundbus_remove_one); int soundbus_register_driver(struct soundbus_driver *drv) { /* initialize common driver fields */ drv->driver.name = drv->name; drv->driver.bus = &soundbus_bus_type; /* register with core */ return driver_register(&drv->driver); } EXPORT_SYMBOL_GPL(soundbus_register_driver); void soundbus_unregister_driver(struct soundbus_driver *drv) { driver_unregister(&drv->driver); } EXPORT_SYMBOL_GPL(soundbus_unregister_driver); static int __init soundbus_init(void) { return bus_register(&soundbus_bus_type); } static void __exit soundbus_exit(void) { bus_unregister(&soundbus_bus_type); } subsys_initcall(soundbus_init); module_exit(soundbus_exit); d> committerDavid S. Miller <davem@davemloft.net>2017-02-07 16:29:30 -0500 commit3efa70d78f218e4c9276b0bac0545e5184c1c47b (patch) treef4abe2f05e173023d2a262afd4aebb1e89fe6985 /sound/hda parent76e0e70e6452b971a69cc9794ff4a6715c11f7f2 (diff)parent926af6273fc683cd98cd0ce7bf0d04a02eed6742 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The conflict was an interaction between a bug fix in the netvsc driver in 'net' and an optimization of the RX path in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'sound/hda')