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linux-headers-6.8.0-36-generic
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mcb.h
/* SPDX-License-Identifier: GPL-2.0-only */ /* * MEN Chameleon Bus. * * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de) * Author: Johannes Thumshirn <johannes.thumshirn@men.de> */ #ifndef _LINUX_MCB_H #define _LINUX_MCB_H #include <linux/mod_devicetable.h> #include <linux/device.h> #include <linux/irqreturn.h> #define CHAMELEON_FILENAME_LEN 12 struct mcb_driver; struct mcb_device; /** * struct mcb_bus - MEN Chameleon Bus * * @dev: bus device * @carrier: pointer to carrier device * @bus_nr: mcb bus number * @get_irq: callback to get IRQ number * @revision: the FPGA's revision number * @model: the FPGA's model number * @filename: the FPGA's name */ struct mcb_bus { struct device dev; struct device *carrier; int bus_nr; u8 revision; char model; u8 minor; char name[CHAMELEON_FILENAME_LEN + 1]; int (*get_irq)(struct mcb_device *dev); }; static inline struct mcb_bus *to_mcb_bus(struct device *dev) { return container_of(dev, struct mcb_bus, dev); } /** * struct mcb_device - MEN Chameleon Bus device * * @dev: device in kernel representation * @bus: mcb bus the device is plugged to * @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 device dev; struct mcb_bus *bus; struct mcb_driver *driver; u16 id; int inst; int group; int var; int bar; int rev; struct resource irq; struct resource mem; struct device *dma_dev; }; #define to_mcb_device(__dev) container_of_const(__dev, 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); }; static inline struct mcb_driver *to_mcb_driver(struct device_driver *drv) { return container_of(drv, 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); extern struct resource *mcb_get_resource(struct mcb_device *dev, unsigned int type); #endif /* _LINUX_MCB_H */
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