1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Anybus-S client adapter definitions 4 * 5 * Copyright 2018 Arcx Inc 6 */ 7 8 #ifndef __LINUX_ANYBUSS_CLIENT_H__ 9 #define __LINUX_ANYBUSS_CLIENT_H__ 10 11 #include <linux/device.h> 12 #include <linux/types.h> 13 #include <linux/poll.h> 14 15 /* move to <linux/fieldbus_dev.h> when taking this out of staging */ 16 #include "../fieldbus_dev.h" 17 18 struct anybuss_host; 19 20 struct anybuss_client { 21 struct device dev; 22 struct anybuss_host *host; 23 __be16 anybus_id; 24 /* 25 * these can be optionally set by the client to receive event 26 * notifications from the host. 27 */ 28 void (*on_area_updated)(struct anybuss_client *client); 29 void (*on_online_changed)(struct anybuss_client *client, bool online); 30 }; 31 32 struct anybuss_client_driver { 33 struct device_driver driver; 34 int (*probe)(struct anybuss_client *adev); 35 void (*remove)(struct anybuss_client *adev); 36 u16 anybus_id; 37 }; 38 39 int anybuss_client_driver_register(struct anybuss_client_driver *drv); 40 void anybuss_client_driver_unregister(struct anybuss_client_driver *drv); 41 to_anybuss_client(struct device * dev)42 static inline struct anybuss_client *to_anybuss_client(struct device *dev) 43 { 44 return container_of(dev, struct anybuss_client, dev); 45 } 46 47 static inline struct anybuss_client_driver * to_anybuss_client_driver(struct device_driver * drv)48 to_anybuss_client_driver(struct device_driver *drv) 49 { 50 return container_of(drv, struct anybuss_client_driver, driver); 51 } 52 53 static inline void * anybuss_get_drvdata(const struct anybuss_client * client)54 anybuss_get_drvdata(const struct anybuss_client *client) 55 { 56 return dev_get_drvdata(&client->dev); 57 } 58 59 static inline void anybuss_set_drvdata(struct anybuss_client * client,void * data)60 anybuss_set_drvdata(struct anybuss_client *client, void *data) 61 { 62 dev_set_drvdata(&client->dev, data); 63 } 64 65 int anybuss_set_power(struct anybuss_client *client, bool power_on); 66 67 struct anybuss_memcfg { 68 u16 input_io; 69 u16 input_dpram; 70 u16 input_total; 71 72 u16 output_io; 73 u16 output_dpram; 74 u16 output_total; 75 76 enum fieldbus_dev_offl_mode offl_mode; 77 }; 78 79 int anybuss_start_init(struct anybuss_client *client, 80 const struct anybuss_memcfg *cfg); 81 int anybuss_finish_init(struct anybuss_client *client); 82 int anybuss_read_fbctrl(struct anybuss_client *client, u16 addr, 83 void *buf, size_t count); 84 int anybuss_send_msg(struct anybuss_client *client, u16 cmd_num, 85 const void *buf, size_t count); 86 int anybuss_send_ext(struct anybuss_client *client, u16 cmd_num, 87 const void *buf, size_t count); 88 int anybuss_recv_msg(struct anybuss_client *client, u16 cmd_num, 89 void *buf, size_t count); 90 91 /* these help clients make a struct file_operations */ 92 int anybuss_write_input(struct anybuss_client *client, 93 const char __user *buf, size_t size, 94 loff_t *offset); 95 int anybuss_read_output(struct anybuss_client *client, 96 char __user *buf, size_t size, 97 loff_t *offset); 98 99 #endif /* __LINUX_ANYBUSS_CLIENT_H__ */ 100