projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 5bc7f990 MB |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* | |
| 3 | * Turris Mox module configuration bus driver | |
| 4 | * | |
| b37c3848 | 5 | * Copyright (C) 2019 Marek Behún <kabel@kernel.org> |
| 5bc7f990 MB |
6 | */ |
| 7 | ||
| 8 | #ifndef __LINUX_MOXTET_H | |
| 9 | #define __LINUX_MOXTET_H | |
| 10 | ||
| 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 10 | |
| 17 | ||
| 18 | enum turris_mox_cpu_module_id { | |
| 19 | TURRIS_MOX_CPU_ID_EMMC = 0x00, | |
| 20 | TURRIS_MOX_CPU_ID_SD = 0x10, | |
| 21 | }; | |
| 22 | ||
| 23 | enum 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 16 | |
| 37 | ||
| 5bc7f990 MB |
38 | struct 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_FS | |
| 55 | struct dentry *debugfs_root; | |
| 56 | #endif | |
| 57 | }; | |
| 58 | ||
| 59 | struct moxtet_driver { | |
| 60 | const enum turris_mox_module_id *id_table; | |
| 61 | struct device_driver driver; | |
| 62 | }; | |
| 63 | ||
| d69d8048 GKH |
64 | #define to_moxtet_driver(__drv) \ |
| 65 | ( __drv ? container_of_const(__drv, struct moxtet_driver, driver) : NULL ) | |
| 5bc7f990 MB |
66 | |
| 67 | extern int __moxtet_register_driver(struct module *owner, | |
| 68 | struct moxtet_driver *mdrv); | |
| 69 | ||
| 70 | static 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 | ||
| 83 | struct moxtet_device { | |
| 84 | struct device dev; | |
| 85 | struct moxtet *moxtet; | |
| 86 | enum turris_mox_module_id id; | |
| 87 | unsigned int idx; | |
| 88 | }; | |
| 89 | ||
| 90 | extern int moxtet_device_read(struct device *dev); | |
| 91 | extern int moxtet_device_write(struct device *dev, u8 val); | |
| 92 | extern int moxtet_device_written(struct device *dev); | |
| 93 | ||
| 94 | static inline struct moxtet_device * | |
| 95 | to_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 */ |