/* 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; }; #define to_moxtet_driver(__drv) \ ( __drv ? container_of_const(__drv, struct moxtet_driver, driver) : NULL ) 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 */