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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Turris Mox module configuration bus driver
*
* Copyright (C) 2019 Marek Behún <kabel@kernel.org>
*/
#ifndef __LINUX_MOXTET_H
#define __LINUX_MOXTET_H
#include <linux/device.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/mutex.h>
#define TURRIS_MOX_MAX_MODULES 10
enum turris_mox_cpu_module_id {
TURRIS_MOX_CPU_ID_EMMC = 0x00,
TURRIS_MOX_CPU_ID_SD = 0x10,
};
enum turris_mox_module_id {
TURRIS_MOX_MODULE_FIRST = 0x01,
TURRIS_MOX_MODULE_SFP = 0x01,
TURRIS_MOX_MODULE_PCI = 0x02,
TURRIS_MOX_MODULE_TOPAZ = 0x03,
TURRIS_MOX_MODULE_PERIDOT = 0x04,
TURRIS_MOX_MODULE_USB3 = 0x05,
TURRIS_MOX_MODULE_PCI_BRIDGE = 0x06,
TURRIS_MOX_MODULE_LAST = 0x06,
};
#define MOXTET_NIRQS 16
struct moxtet {
struct device *dev;
struct mutex lock;
u8 modules[TURRIS_MOX_MAX_MODULES];
int count;
u8 tx[TURRIS_MOX_MAX_MODULES];
int dev_irq;
struct {
struct irq_domain *domain;
struct irq_chip chip;
unsigned long masked, exists;
struct moxtet_irqpos {
u8 idx;
u8 bit;
} position[MOXTET_NIRQS];
} irq;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_root;
#endif
};
struct moxtet_driver {
const enum turris_mox_module_id *id_table;
struct device_driver driver;
};
static inline struct moxtet_driver *
to_moxtet_driver(struct device_driver *drv)
{
if (!drv)
return NULL;
return container_of(drv, struct moxtet_driver, driver);
}
extern int __moxtet_register_driver(struct module *owner,
struct moxtet_driver *mdrv);
static inline void moxtet_unregister_driver(struct moxtet_driver *mdrv)
{
if (mdrv)
driver_unregister(&mdrv->driver);
}
#define moxtet_register_driver(driver) \
__moxtet_register_driver(THIS_MODULE, driver)
#define module_moxtet_driver(__moxtet_driver) \
module_driver(__moxtet_driver, moxtet_register_driver, \
moxtet_unregister_driver)
struct moxtet_device {
struct device dev;
struct moxtet *moxtet;
enum turris_mox_module_id id;
unsigned int idx;
};
extern int moxtet_device_read(struct device *dev);
extern int moxtet_device_write(struct device *dev, u8 val);
extern int moxtet_device_written(struct device *dev);
static inline struct moxtet_device *
to_moxtet_device(struct device *dev)
{
if (!dev)
return NULL;
return container_of(dev, struct moxtet_device, dev);
}
#endif /* __LINUX_MOXTET_H */