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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Greybus driver and device API
*
* Copyright 2014-2015 Google Inc.
* Copyright 2014-2015 Linaro Ltd.
*/
#ifndef __LINUX_GREYBUS_H
#define __LINUX_GREYBUS_H
#ifdef __KERNEL__
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/idr.h>
#include <linux/greybus/greybus_id.h>
#include <linux/greybus/greybus_manifest.h>
#include <linux/greybus/greybus_protocols.h>
#include <linux/greybus/manifest.h>
#include <linux/greybus/hd.h>
#include <linux/greybus/svc.h>
#include <linux/greybus/control.h>
#include <linux/greybus/module.h>
#include <linux/greybus/interface.h>
#include <linux/greybus/bundle.h>
#include <linux/greybus/connection.h>
#include <linux/greybus/operation.h>
/* Matches up with the Greybus Protocol specification document */
#define GREYBUS_VERSION_MAJOR 0x00
#define GREYBUS_VERSION_MINOR 0x01
#define GREYBUS_ID_MATCH_DEVICE \
(GREYBUS_ID_MATCH_VENDOR | GREYBUS_ID_MATCH_PRODUCT)
#define GREYBUS_DEVICE(v, p) \
.match_flags = GREYBUS_ID_MATCH_DEVICE, \
.vendor = (v), \
.product = (p),
#define GREYBUS_DEVICE_CLASS(c) \
.match_flags = GREYBUS_ID_MATCH_CLASS, \
.class = (c),
/* Maximum number of CPorts */
#define CPORT_ID_MAX 4095 /* UniPro max id is 4095 */
#define CPORT_ID_BAD U16_MAX
struct greybus_driver {
const char *name;
int (*probe)(struct gb_bundle *bundle,
const struct greybus_bundle_id *id);
void (*disconnect)(struct gb_bundle *bundle);
const struct greybus_bundle_id *id_table;
struct device_driver driver;
};
#define to_greybus_driver(d) container_of(d, struct greybus_driver, driver)
static inline void greybus_set_drvdata(struct gb_bundle *bundle, void *data)
{
dev_set_drvdata(&bundle->dev, data);
}
static inline void *greybus_get_drvdata(struct gb_bundle *bundle)
{
return dev_get_drvdata(&bundle->dev);
}
/* Don't call these directly, use the module_greybus_driver() macro instead */
int greybus_register_driver(struct greybus_driver *driver,
struct module *module, const char *mod_name);
void greybus_deregister_driver(struct greybus_driver *driver);
/* define to get proper THIS_MODULE and KBUILD_MODNAME values */
#define greybus_register(driver) \
greybus_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
#define greybus_deregister(driver) \
greybus_deregister_driver(driver)
/**
* module_greybus_driver() - Helper macro for registering a Greybus driver
* @__greybus_driver: greybus_driver structure
*
* Helper macro for Greybus drivers to set up proper module init / exit
* functions. Replaces module_init() and module_exit() and keeps people from
* printing pointless things to the kernel log when their driver is loaded.
*/
#define module_greybus_driver(__greybus_driver) \
module_driver(__greybus_driver, greybus_register, greybus_deregister)
int greybus_disabled(void);
void gb_debugfs_init(void);
void gb_debugfs_cleanup(void);
struct dentry *gb_debugfs_get(void);
extern struct bus_type greybus_bus_type;
extern struct device_type greybus_hd_type;
extern struct device_type greybus_module_type;
extern struct device_type greybus_interface_type;
extern struct device_type greybus_control_type;
extern struct device_type greybus_bundle_type;
extern struct device_type greybus_svc_type;
static inline int is_gb_host_device(const struct device *dev)
{
return dev->type == &greybus_hd_type;
}
static inline int is_gb_module(const struct device *dev)
{
return dev->type == &greybus_module_type;
}
static inline int is_gb_interface(const struct device *dev)
{
return dev->type == &greybus_interface_type;
}
static inline int is_gb_control(const struct device *dev)
{
return dev->type == &greybus_control_type;
}
static inline int is_gb_bundle(const struct device *dev)
{
return dev->type == &greybus_bundle_type;
}
static inline int is_gb_svc(const struct device *dev)
{
return dev->type == &greybus_svc_type;
}
static inline bool cport_id_valid(struct gb_host_device *hd, u16 cport_id)
{
return cport_id != CPORT_ID_BAD && cport_id < hd->num_cports;
}
#endif /* __KERNEL__ */
#endif /* __LINUX_GREYBUS_H */
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