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/* * Allwinner Reduced Serial Bus Driver * * Copyright (c) 2015 Chen-Yu Tsai * * Author: Chen-Yu Tsai <wens@csie.org> * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #ifndef _SUNXI_RSB_H #define _SUNXI_RSB_H #include <linux/device.h> #include <linux/regmap.h> #include <linux/types.h> struct sunxi_rsb; /** * struct sunxi_rsb_device - Basic representation of an RSB device * @dev: Driver model representation of the device. * @ctrl: RSB controller managing the bus hosting this device. * @rtaddr: This device's runtime address * @hwaddr: This device's hardware address */ struct sunxi_rsb_device { struct device dev; struct sunxi_rsb *rsb; int irq; u8 rtaddr; u16 hwaddr; }; static inline struct sunxi_rsb_device *to_sunxi_rsb_device(struct device *d) { return container_of(d, struct sunxi_rsb_device, dev); } static inline void *sunxi_rsb_device_get_drvdata(const struct sunxi_rsb_device *rdev) { return dev_get_drvdata(&rdev->dev); } static inline void sunxi_rsb_device_set_drvdata(struct sunxi_rsb_device *rdev, void *data) { dev_set_drvdata(&rdev->dev, data); } /** * struct sunxi_rsb_driver - RSB slave device driver * @driver: RSB device drivers should initialize name and owner field of * this structure. * @probe: binds this driver to a RSB device. * @remove: unbinds this driver from the RSB device. */ struct sunxi_rsb_driver { struct device_driver driver; int (*probe)(struct sunxi_rsb_device *rdev); int (*remove)(struct sunxi_rsb_device *rdev); }; static inline struct sunxi_rsb_driver *to_sunxi_rsb_driver(struct device_driver *d) { return container_of(d, struct sunxi_rsb_driver, driver); } int sunxi_rsb_driver_register(struct sunxi_rsb_driver *rdrv); /** * sunxi_rsb_driver_unregister() - unregister an RSB client driver * @rdrv: the driver to unregister */ static inline void sunxi_rsb_driver_unregister(struct sunxi_rsb_driver *rdrv) { if (rdrv) driver_unregister(&rdrv->driver); } #define module_sunxi_rsb_driver(__sunxi_rsb_driver) \ module_driver(__sunxi_rsb_driver, sunxi_rsb_driver_register, \ sunxi_rsb_driver_unregister) struct regmap *__devm_regmap_init_sunxi_rsb(struct sunxi_rsb_device *rdev, const struct regmap_config *config, struct lock_class_key *lock_key, const char *lock_name); /** * devm_regmap_init_sunxi_rsb(): Initialise managed register map * * @rdev: Device that will be interacted with * @config: Configuration for register map * * The return value will be an ERR_PTR() on error or a valid pointer * to a struct regmap. The regmap will be automatically freed by the * device management code. */ #define devm_regmap_init_sunxi_rsb(rdev, config) \ __regmap_lockdep_wrapper(__devm_regmap_init_sunxi_rsb, #config, \ rdev, config) #endif /* _SUNXI_RSB_H */
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