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