diff options
Diffstat (limited to 'include/linux/soundwire/sdw_type.h')
| -rw-r--r-- | include/linux/soundwire/sdw_type.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/soundwire/sdw_type.h b/include/linux/soundwire/sdw_type.h new file mode 100644 index 000000000..d8c27f1e5 --- /dev/null +++ b/include/linux/soundwire/sdw_type.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2015-17 Intel Corporation. */ + +#ifndef __SOUNDWIRE_TYPES_H +#define __SOUNDWIRE_TYPES_H + +extern struct bus_type sdw_bus_type; +extern struct device_type sdw_slave_type; +extern struct device_type sdw_master_type; + +static inline int is_sdw_slave(const struct device *dev) +{ + return dev->type == &sdw_slave_type; +} + +#define drv_to_sdw_driver(_drv) container_of(_drv, struct sdw_driver, driver) + +#define sdw_register_driver(drv) \ + __sdw_register_driver(drv, THIS_MODULE) + +int __sdw_register_driver(struct sdw_driver *drv, struct module *owner); +void sdw_unregister_driver(struct sdw_driver *drv); + +int sdw_slave_uevent(const struct device *dev, struct kobj_uevent_env *env); + +/** + * module_sdw_driver() - Helper macro for registering a Soundwire driver + * @__sdw_driver: soundwire slave driver struct + * + * Helper macro for Soundwire drivers which do not do anything special in + * module init/exit. This eliminates a lot of boilerplate. Each module may only + * use this macro once, and calling it replaces module_init() and module_exit() + */ +#define module_sdw_driver(__sdw_driver) \ + module_driver(__sdw_driver, sdw_register_driver, \ + sdw_unregister_driver) +#endif /* __SOUNDWIRE_TYPES_H */ |