mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
![]() |
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
/*
|
||
|
* Turris Mox module configuration bus driver
|
||
|
*
|
||
|
* Copyright (C) 2019 Marek Behun <marek.behun@nic.cz>
|
||
|
*/
|
||
|
|
||
|
#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
|
||
|
|
||
|
extern struct bus_type moxtet_type;
|
||
|
|
||
|
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 */
|