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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Turris Mox module configuration bus driver4 *5 * Copyright (C) 2019 Marek Behún <kabel@kernel.org>6 */7 8#ifndef __LINUX_MOXTET_H9#define __LINUX_MOXTET_H10 11#include <linux/device.h>12#include <linux/irq.h>13#include <linux/irqdomain.h>14#include <linux/mutex.h>15 16#define TURRIS_MOX_MAX_MODULES 1017 18enum turris_mox_cpu_module_id {19 TURRIS_MOX_CPU_ID_EMMC = 0x00,20 TURRIS_MOX_CPU_ID_SD = 0x10,21};22 23enum turris_mox_module_id {24 TURRIS_MOX_MODULE_FIRST = 0x01,25 26 TURRIS_MOX_MODULE_SFP = 0x01,27 TURRIS_MOX_MODULE_PCI = 0x02,28 TURRIS_MOX_MODULE_TOPAZ = 0x03,29 TURRIS_MOX_MODULE_PERIDOT = 0x04,30 TURRIS_MOX_MODULE_USB3 = 0x05,31 TURRIS_MOX_MODULE_PCI_BRIDGE = 0x06,32 33 TURRIS_MOX_MODULE_LAST = 0x06,34};35 36#define MOXTET_NIRQS 1637 38struct moxtet {39 struct device *dev;40 struct mutex lock;41 u8 modules[TURRIS_MOX_MAX_MODULES];42 int count;43 u8 tx[TURRIS_MOX_MAX_MODULES];44 int dev_irq;45 struct {46 struct irq_domain *domain;47 struct irq_chip chip;48 unsigned long masked, exists;49 struct moxtet_irqpos {50 u8 idx;51 u8 bit;52 } position[MOXTET_NIRQS];53 } irq;54#ifdef CONFIG_DEBUG_FS55 struct dentry *debugfs_root;56#endif57};58 59struct moxtet_driver {60 const enum turris_mox_module_id *id_table;61 struct device_driver driver;62};63 64#define to_moxtet_driver(__drv) \65 ( __drv ? container_of_const(__drv, struct moxtet_driver, driver) : NULL )66 67extern int __moxtet_register_driver(struct module *owner,68 struct moxtet_driver *mdrv);69 70static inline void moxtet_unregister_driver(struct moxtet_driver *mdrv)71{72 if (mdrv)73 driver_unregister(&mdrv->driver);74}75 76#define moxtet_register_driver(driver) \77 __moxtet_register_driver(THIS_MODULE, driver)78 79#define module_moxtet_driver(__moxtet_driver) \80 module_driver(__moxtet_driver, moxtet_register_driver, \81 moxtet_unregister_driver)82 83struct moxtet_device {84 struct device dev;85 struct moxtet *moxtet;86 enum turris_mox_module_id id;87 unsigned int idx;88};89 90extern int moxtet_device_read(struct device *dev);91extern int moxtet_device_write(struct device *dev, u8 val);92extern int moxtet_device_written(struct device *dev);93 94static inline struct moxtet_device *95to_moxtet_device(struct device *dev)96{97 if (!dev)98 return NULL;99 return container_of(dev, struct moxtet_device, dev);100}101 102#endif /* __LINUX_MOXTET_H */103