| /* |
| * 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); |
| void (*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 */ |