1 /* 2 * Industrial I/O software trigger interface 3 * 4 * Copyright (c) 2015 Intel Corporation 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 as published by 8 * the Free Software Foundation. 9 */ 10 11 #ifndef __IIO_SW_TRIGGER 12 #define __IIO_SW_TRIGGER 13 14 #include <linux/module.h> 15 #include <linux/device.h> 16 #include <linux/iio/iio.h> 17 #include <linux/configfs.h> 18 19 #define module_iio_sw_trigger_driver(__iio_sw_trigger_type) \ 20 module_driver(__iio_sw_trigger_type, iio_register_sw_trigger_type, \ 21 iio_unregister_sw_trigger_type) 22 23 struct iio_sw_trigger_ops; 24 25 struct iio_sw_trigger_type { 26 const char *name; 27 struct module *owner; 28 const struct iio_sw_trigger_ops *ops; 29 struct list_head list; 30 struct config_group *group; 31 }; 32 33 struct iio_sw_trigger { 34 struct iio_trigger *trigger; 35 struct iio_sw_trigger_type *trigger_type; 36 struct config_group group; 37 }; 38 39 struct iio_sw_trigger_ops { 40 struct iio_sw_trigger* (*probe)(const char *); 41 int (*remove)(struct iio_sw_trigger *); 42 }; 43 44 static inline 45 struct iio_sw_trigger *to_iio_sw_trigger(struct config_item *item) 46 { 47 return container_of(to_config_group(item), struct iio_sw_trigger, 48 group); 49 } 50 51 int iio_register_sw_trigger_type(struct iio_sw_trigger_type *tt); 52 void iio_unregister_sw_trigger_type(struct iio_sw_trigger_type *tt); 53 54 struct iio_sw_trigger *iio_sw_trigger_create(const char *, const char *); 55 void iio_sw_trigger_destroy(struct iio_sw_trigger *); 56 57 int iio_sw_trigger_type_configfs_register(struct iio_sw_trigger_type *tt); 58 void iio_sw_trigger_type_configfs_unregister(struct iio_sw_trigger_type *tt); 59 60 static inline 61 void iio_swt_group_init_type_name(struct iio_sw_trigger *t, 62 const char *name, 63 const struct config_item_type *type) 64 { 65 #if IS_ENABLED(CONFIG_CONFIGFS_FS) 66 config_group_init_type_name(&t->group, name, type); 67 #endif 68 } 69 70 #endif /* __IIO_SW_TRIGGER */ 71