i2c.h revision 1.2
1 1.2 riastrad /* $NetBSD: i2c.h,v 1.2 2014/03/18 18:20:43 riastradh Exp $ */ 2 1.2 riastrad 3 1.2 riastrad /*- 4 1.2 riastrad * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.2 riastrad * All rights reserved. 6 1.2 riastrad * 7 1.2 riastrad * This code is derived from software contributed to The NetBSD Foundation 8 1.2 riastrad * by Taylor R. Campbell. 9 1.2 riastrad * 10 1.2 riastrad * Redistribution and use in source and binary forms, with or without 11 1.2 riastrad * modification, are permitted provided that the following conditions 12 1.2 riastrad * are met: 13 1.2 riastrad * 1. Redistributions of source code must retain the above copyright 14 1.2 riastrad * notice, this list of conditions and the following disclaimer. 15 1.2 riastrad * 2. Redistributions in binary form must reproduce the above copyright 16 1.2 riastrad * notice, this list of conditions and the following disclaimer in the 17 1.2 riastrad * documentation and/or other materials provided with the distribution. 18 1.2 riastrad * 19 1.2 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2 riastrad * POSSIBILITY OF SUCH DAMAGE. 30 1.2 riastrad */ 31 1.2 riastrad 32 1.2 riastrad #ifndef _LINUX_I2C_H_ 33 1.2 riastrad #define _LINUX_I2C_H_ 34 1.2 riastrad 35 1.2 riastrad #include <sys/types.h> 36 1.2 riastrad #include <sys/device_if.h> 37 1.2 riastrad #include <sys/queue.h> /* XXX include order botch: i2cvar.h needs */ 38 1.2 riastrad 39 1.2 riastrad #include <dev/i2c/i2cvar.h> 40 1.2 riastrad 41 1.2 riastrad struct i2c_adapter; 42 1.2 riastrad struct i2c_algorithm; 43 1.2 riastrad struct i2c_msg; 44 1.2 riastrad 45 1.2 riastrad #define I2C_NAME_SIZE 20 46 1.2 riastrad 47 1.2 riastrad #define I2C_CLASS_DDC 0x01 48 1.2 riastrad 49 1.2 riastrad struct i2c_adapter { 50 1.2 riastrad char name[I2C_NAME_SIZE]; 51 1.2 riastrad const struct i2c_algorithm *algo; 52 1.2 riastrad void *algo_data; 53 1.2 riastrad int retries; 54 1.2 riastrad struct module *owner; 55 1.2 riastrad unsigned int class; 56 1.2 riastrad struct { 57 1.2 riastrad device_t parent; 58 1.2 riastrad } dev; /* XXX Kludge for intel_dp. */ 59 1.2 riastrad }; 60 1.2 riastrad 61 1.2 riastrad static inline int 62 1.2 riastrad i2c_add_adapter(struct i2c_adapter *adapter __unused) 63 1.2 riastrad { 64 1.2 riastrad return 0; 65 1.2 riastrad } 66 1.2 riastrad 67 1.2 riastrad static inline void 68 1.2 riastrad i2c_del_adapter(struct i2c_adapter *adapter __unused) 69 1.2 riastrad { 70 1.2 riastrad } 71 1.2 riastrad 72 1.2 riastrad struct i2c_msg { 73 1.2 riastrad i2c_addr_t addr; 74 1.2 riastrad uint16_t flags; 75 1.2 riastrad uint16_t len; 76 1.2 riastrad uint8_t *buf; 77 1.2 riastrad }; 78 1.2 riastrad 79 1.2 riastrad #define I2C_M_RD 0x01 80 1.2 riastrad #define I2C_M_NOSTART 0x02 81 1.2 riastrad 82 1.2 riastrad #define I2C_FUNC_I2C 0x01 83 1.2 riastrad #define I2C_FUNC_NOSTART 0x02 84 1.2 riastrad #define I2C_FUNC_SMBUS_EMUL 0x04 85 1.2 riastrad #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x08 86 1.2 riastrad #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x10 87 1.2 riastrad #define I2C_FUNC_10BIT_ADDR 0x20 88 1.2 riastrad 89 1.2 riastrad struct i2c_algorithm { 90 1.2 riastrad int (*master_xfer)(struct i2c_adapter *, struct i2c_msg *, 91 1.2 riastrad int); 92 1.2 riastrad uint32_t (*functionality)(struct i2c_adapter *); 93 1.2 riastrad }; 94 1.2 riastrad 95 1.2 riastrad /* XXX Make the nm output a little more greppable... */ 96 1.2 riastrad #define i2c_transfer linux_i2c_transfer 97 1.2 riastrad 98 1.2 riastrad int i2c_transfer(struct i2c_adapter *, struct i2c_msg *, int); 99 1.2 riastrad 100 1.2 riastrad #endif /* _LINUX_I2C_H_ */ 101
Indexes created Mon Sep 22 21:09:42 GMT 2025