diff options
Diffstat (limited to 'freebsd/sys/dev/iicbus/iic.h')
| -rw-r--r-- | freebsd/sys/dev/iicbus/iic.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/freebsd/sys/dev/iicbus/iic.h b/freebsd/sys/dev/iicbus/iic.h new file mode 100644 index 00000000..5ebf56a9 --- /dev/null +++ b/freebsd/sys/dev/iicbus/iic.h @@ -0,0 +1,72 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 1998 Nicolas Souchu + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + * + */ +#ifndef __IIC_H +#define __IIC_H + +#include <sys/ioccom.h> + +/* Designed to be compatible with linux's struct i2c_msg */ +struct iic_msg +{ + uint16_t slave; + uint16_t flags; +#define IIC_M_WR 0 /* Fake flag for write */ +#define IIC_M_RD 0x0001 /* read vs write */ +#define IIC_M_NOSTOP 0x0002 /* do not send a I2C stop after message */ +#define IIC_M_NOSTART 0x0004 /* do not send a I2C start before message */ + uint16_t len; /* msg length */ + uint8_t * buf; +}; + +struct iiccmd { + u_char slave; + int count; + int last; + char *buf; +}; + +struct iic_rdwr_data { + struct iic_msg *msgs; + uint32_t nmsgs; +}; + +#define IIC_RDRW_MAX_MSGS 42 + +#define I2CSTART _IOW('i', 1, struct iiccmd) /* start condition */ +#define I2CSTOP _IO('i', 2) /* stop condition */ +#define I2CRSTCARD _IOW('i', 3, struct iiccmd) /* reset the card */ +#define I2CWRITE _IOW('i', 4, struct iiccmd) /* send data */ +#define I2CREAD _IOW('i', 5, struct iiccmd) /* receive data */ +#define I2CRDWR _IOW('i', 6, struct iic_rdwr_data) /* General read/write interface */ +#define I2CRPTSTART _IOW('i', 7, struct iiccmd) /* repeated start */ +#define I2CSADDR _IOW('i', 8, uint8_t) /* set slave address for future I/O */ + +#endif |