1 /*- 2 * Copyright (c) 1998, 2001 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 * $FreeBSD: src/sys/dev/iicbus/iiconf.h,v 1.11 2006/12/05 06:19:36 imp Exp $ 27 * $DragonFly: src/sys/bus/iicbus/iiconf.h,v 1.4 2003/11/14 21:46:17 daver Exp $ 28 */ 29 #ifndef __IICONF_H 30 #define __IICONF_H 31 32 #include <sys/queue.h> 33 #include <bus/iicbus/iic.h> 34 35 36 #define IICPRI (PZERO+8) /* XXX sleep/wakeup queue priority */ 37 38 #define LSB 0x1 39 40 /* 41 * How tsleep() is called in iic_request_bus(). 42 */ 43 #define IIC_DONTWAIT 0 44 #define IIC_NOINTR 0 45 #define IIC_WAIT 0x1 46 #define IIC_INTR 0x2 47 48 /* 49 * i2c modes 50 */ 51 #define IIC_MASTER 0x1 52 #define IIC_SLAVE 0x2 53 #define IIC_POLLED 0x4 54 55 /* 56 * i2c speed 57 */ 58 #define IIC_UNKNOWN 0x0 59 #define IIC_SLOW 0x1 60 #define IIC_FAST 0x2 61 #define IIC_FASTEST 0x3 62 63 #define IIC_LAST_READ 0x1 64 65 /* 66 * callback index 67 */ 68 #define IIC_REQUEST_BUS 0x1 69 #define IIC_RELEASE_BUS 0x2 70 71 /* 72 * interrupt events 73 */ 74 #define INTR_GENERAL 0x1 /* general call received */ 75 #define INTR_START 0x2 /* the I2C interface is addressed */ 76 #define INTR_STOP 0x3 /* stop condition received */ 77 #define INTR_RECEIVE 0x4 /* character received */ 78 #define INTR_TRANSMIT 0x5 /* character to transmit */ 79 #define INTR_ERROR 0x6 /* error */ 80 #define INTR_NOACK 0x7 /* no ack from master receiver */ 81 82 /* 83 * adapter layer errors 84 */ 85 #define IIC_NOERR 0x0 /* no error occured */ 86 #define IIC_EBUSERR 0x1 /* bus error */ 87 #define IIC_ENOACK 0x2 /* ack not received until timeout */ 88 #define IIC_ETIMEOUT 0x3 /* timeout */ 89 #define IIC_EBUSBSY 0x4 /* bus busy */ 90 #define IIC_ESTATUS 0x5 /* status error */ 91 #define IIC_EUNDERFLOW 0x6 /* slave ready for more data */ 92 #define IIC_EOVERFLOW 0x7 /* too much data */ 93 #define IIC_ENOTSUPP 0x8 /* request not supported */ 94 #define IIC_ENOADDR 0x9 /* no address assigned to the interface */ 95 96 extern int iicbus_request_bus(device_t, device_t, int); 97 extern int iicbus_release_bus(device_t, device_t); 98 99 extern void iicbus_intr(device_t, int, char *); 100 101 extern int iicbus_null_repeated_start(device_t, u_char); 102 extern int iicbus_null_callback(device_t, int, caddr_t); 103 104 #define iicbus_reset(bus,speed,addr,oldaddr) \ 105 (IICBUS_RESET(device_get_parent(bus), speed, addr, oldaddr)) 106 107 /* basic I2C operations */ 108 extern int iicbus_started(device_t); 109 extern int iicbus_start(device_t, u_char, int); 110 extern int iicbus_stop(device_t); 111 extern int iicbus_repeated_start(device_t, u_char, int); 112 extern int iicbus_write(device_t, const char *, int, int *, int); 113 extern int iicbus_read(device_t, char *, int, int *, int, int); 114 115 /* single byte read/write functions, start/stop not managed */ 116 extern int iicbus_write_byte(device_t, char, int); 117 extern int iicbus_read_byte(device_t, char *, int); 118 119 /* Read/write operations with start/stop conditions managed */ 120 extern int iicbus_block_write(device_t, u_char, char *, int, int *); 121 extern int iicbus_block_read(device_t, u_char, char *, int, int *); 122 123 /* vectors of iic operations to pass to bridge */ 124 int iicbus_transfer(device_t bus, struct iic_msg *msgs, uint32_t nmsgs); 125 int iicbus_transfer_gen(device_t bus, struct iic_msg *msgs, uint32_t nmsgs); 126 127 #define IICBUS_MODVER 1 128 #define IICBUS_MINVER 1 129 #define IICBUS_MAXVER 1 130 #define IICBUS_PREFVER IICBUS_MODVER 131 132 extern driver_t iicbb_driver; 133 extern devclass_t iicbb_devclass; 134 135 #define IICBB_MODVER 1 136 #define IICBB_MINVER 1 137 #define IICBB_MAXVER 1 138 #define IICBB_PREFVER IICBB_MODVER 139 140 #endif 141