1 /* 2 * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw> 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef _MISC_H_ 8 #define _MISC_H_ 9 10 /* 11 * Read the device to buffer, optional. 12 * 13 * @dev: the device 14 * @offset: offset to read the device 15 * @buf: pointer to data buffer 16 * @size: data size in bytes to read the device 17 * @return: 0 if OK, -ve on error 18 */ 19 int misc_read(struct udevice *dev, int offset, void *buf, int size); 20 /* 21 * Write buffer to the device, optional. 22 * 23 * @dev: the device 24 * @offset: offset to write the device 25 * @buf: pointer to data buffer 26 * @size: data size in bytes to write the device 27 * @return: 0 if OK, -ve on error 28 */ 29 int misc_write(struct udevice *dev, int offset, void *buf, int size); 30 /* 31 * Assert command to the device, optional. 32 * 33 * @dev: the device 34 * @request: command to be sent to the device 35 * @buf: pointer to buffer related to the request 36 * @return: 0 if OK, -ve on error 37 */ 38 int misc_ioctl(struct udevice *dev, unsigned long request, void *buf); 39 40 /* 41 * struct misc_ops - Driver model Misc operations 42 * 43 * The uclass interface is implemented by all miscellaneous devices which 44 * use driver model. 45 */ 46 struct misc_ops { 47 /* 48 * Read the device to buffer, optional. 49 * 50 * @dev: the device 51 * @offset: offset to read the device 52 * @buf: pointer to data buffer 53 * @size: data size in bytes to read the device 54 * @return: 0 if OK, -ve on error 55 */ 56 int (*read)(struct udevice *dev, int offset, void *buf, int size); 57 /* 58 * Write buffer to the device, optional. 59 * 60 * @dev: the device 61 * @offset: offset to write the device 62 * @buf: pointer to data buffer 63 * @size: data size in bytes to write the device 64 * @return: 0 if OK, -ve on error 65 */ 66 int (*write)(struct udevice *dev, int offset, const void *buf, 67 int size); 68 /* 69 * Assert command to the device, optional. 70 * 71 * @dev: the device 72 * @request: command to be sent to the device 73 * @buf: pointer to buffer related to the request 74 * @return: 0 if OK, -ve on error 75 */ 76 int (*ioctl)(struct udevice *dev, unsigned long request, void *buf); 77 }; 78 79 #endif /* _MISC_H_ */ 80