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/*
* MEN Chameleon Bus.
*
* Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
* Author: Johannes Thumshirn <johannes.thumshirn@men.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; version 2 of the License.
*/
#ifndef _LINUX_MCB_H
#define _LINUX_MCB_H
#include <linux/mod_devicetable.h>
#include <linux/device.h>
#include <linux/irqreturn.h>
struct mcb_driver;
struct mcb_device;
/**
* struct mcb_bus - MEN Chameleon Bus
*
* @dev: pointer to carrier device
* @children: the child busses
* @bus_nr: mcb bus number
* @get_irq: callback to get IRQ number
*/
struct mcb_bus {
struct list_head children;
struct device dev;
struct device *carrier;
int bus_nr;
int (*get_irq)(struct mcb_device *dev);
};
#define to_mcb_bus(b) container_of((b), struct mcb_bus, dev)
/**
* struct mcb_device - MEN Chameleon Bus device
*
* @bus_list: internal list handling for bus code
* @dev: device in kernel representation
* @bus: mcb bus the device is plugged to
* @subordinate: subordinate MCBus in case of bridge
* @is_added: flag to check if device is added to bus
* @driver: associated mcb_driver
* @id: mcb device id
* @inst: instance in Chameleon table
* @group: group in Chameleon table
* @var: variant in Chameleon table
* @bar: BAR in Chameleon table
* @rev: revision in Chameleon table
* @irq: IRQ resource
* @memory: memory resource
*/
struct mcb_device {
struct list_head bus_list;
struct device dev;
struct mcb_bus *bus;
struct mcb_bus *subordinate;
bool is_added;
struct mcb_driver *driver;
u16 id;
int inst;
int group;
int var;
int bar;
int rev;
struct resource irq;
struct resource mem;
};
#define to_mcb_device(x) container_of((x), struct mcb_device, dev)
/**
* struct mcb_driver - MEN Chameleon Bus device driver
*
* @driver: device_driver
* @id_table: mcb id table
* @probe: probe callback
* @remove: remove callback
* @shutdown: shutdown callback
*/
struct mcb_driver {
struct device_driver driver;
const struct mcb_device_id *id_table;
int (*probe)(struct mcb_device *mdev, const struct mcb_device_id *id);
void (*remove)(struct mcb_device *mdev);
void (*shutdown)(struct mcb_device *mdev);
};
#define to_mcb_driver(x) container_of((x), struct mcb_driver, driver)
static inline void *mcb_get_drvdata(struct mcb_device *dev)
{
return dev_get_drvdata(&dev->dev);
}
static inline void mcb_set_drvdata(struct mcb_device *dev, void *data)
{
dev_set_drvdata(&dev->dev, data);
}
extern int __must_check __mcb_register_driver(struct mcb_driver *drv,
struct module *owner,
const char *mod_name);
#define mcb_register_driver(driver) \
__mcb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
extern void mcb_unregister_driver(struct mcb_driver *driver);
#define module_mcb_driver(__mcb_driver) \
module_driver(__mcb_driver, mcb_register_driver, mcb_unregister_driver);
extern void mcb_bus_add_devices(const struct mcb_bus *bus);
extern int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev);
extern struct mcb_bus *mcb_alloc_bus(struct device *carrier);
extern struct mcb_bus *mcb_bus_get(struct mcb_bus *bus);
extern void mcb_bus_put(struct mcb_bus *bus);
extern struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus);
extern void mcb_free_dev(struct mcb_device *dev);
extern void mcb_release_bus(struct mcb_bus *bus);
extern struct resource *mcb_request_mem(struct mcb_device *dev,
const char *name);
extern void mcb_release_mem(struct resource *mem);
extern int mcb_get_irq(struct mcb_device *dev);
#endif /* _LINUX_MCB_H */