1 /*- 2 * Copyright (c) 1998 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $Id: iiconf.h,v 1.1.1.10 1998/08/13 17:10:43 son Exp $ 27 */ 28 #ifndef __IICONF_H 29 #define __IICONF_H 30 31 #include <sys/queue.h> 32 33 #define IICPRI PZERO+8 /* XXX sleep/wakeup queue priority */ 34 35 #define n(flags) (~(flags) & (flags)) 36 37 #define LSB 0x1 38 39 /* 40 * How tsleep() is called in iic_request_bus(). 41 */ 42 #define IIC_DONTWAIT 0 43 #define IIC_NOINTR 0 44 #define IIC_WAIT 0x1 45 #define IIC_INTR 0x2 46 47 /* 48 * i2c modes 49 */ 50 #define IIC_MASTER 0x1 51 #define IIC_SLAVE 0x2 52 #define IIC_POLLED 0x4 53 54 /* 55 * i2c speed 56 */ 57 #define IIC_UNKNOWN 0x0 58 #define IIC_SLOW 0x1 59 #define IIC_FAST 0x2 60 #define IIC_FASTEST 0x3 61 62 /* 63 * interrupt events 64 */ 65 #define INTR_GENERAL 0x1 /* general call received */ 66 #define INTR_START 0x2 /* the I2C interface is addressed */ 67 #define INTR_STOP 0x3 /* stop condition received */ 68 #define INTR_RECEIVE 0x4 /* character received */ 69 #define INTR_TRANSMIT 0x5 /* character to transmit */ 70 #define INTR_ERROR 0x6 /* error */ 71 #define INTR_NOACK 0x7 /* no ack from master receiver */ 72 73 /* 74 * adapter layer errors 75 */ 76 #define IIC_NOERR 0x0 /* no error occured */ 77 #define IIC_EBUSERR 0x1 /* bus error */ 78 #define IIC_ENOACK 0x2 /* ack not received until timeout */ 79 #define IIC_ETIMEOUT 0x3 /* timeout */ 80 #define IIC_EBUSBSY 0x4 /* bus busy */ 81 #define IIC_ESTATUS 0x5 /* status error */ 82 #define IIC_EUNDERFLOW 0x6 /* slave ready for more data */ 83 #define IIC_EOVERFLOW 0x7 /* too much data */ 84 85 /* 86 * ivars codes 87 */ 88 #define IICBUS_IVAR_ADDR 0x1 /* I2C address of the device */ 89 90 extern int iicbus_request_bus(device_t, device_t, int); 91 extern int iicbus_release_bus(device_t, device_t); 92 extern device_t iicbus_alloc_bus(device_t); 93 94 extern void iicbus_intr(device_t, int, char *); 95 96 #define iicbus_repeated_start(bus,slave) \ 97 (IICBUS_REPEATED_START(device_get_parent(bus), slave)) 98 #define iicbus_start(bus,slave) \ 99 (IICBUS_START(device_get_parent(bus), slave)) 100 #define iicbus_stop(bus) \ 101 (IICBUS_STOP(device_get_parent(bus))) 102 #define iicbus_reset(bus,speed) \ 103 (IICBUS_RESET(device_get_parent(bus), speed)) 104 #define iicbus_write(bus,buf,len,sent) \ 105 (IICBUS_WRITE(device_get_parent(bus), buf, len, sent)) 106 #define iicbus_read(bus,buf,len,sent) \ 107 (IICBUS_READ(device_get_parent(bus), buf, len, sent)) 108 109 extern int iicbus_block_write(device_t, u_char, char *, int, int *); 110 extern int iicbus_block_read(device_t, u_char, char *, int, int *); 111 112 extern u_char iicbus_get_addr(device_t); 113 extern u_char iicbus_get_own_address(device_t); 114 115 #endif 116