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-rw-r--r--freebsd/sys/dev/iicbus/iiconf.h162
1 files changed, 162 insertions, 0 deletions
diff --git a/freebsd/sys/dev/iicbus/iiconf.h b/freebsd/sys/dev/iicbus/iiconf.h
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+++ b/freebsd/sys/dev/iicbus/iiconf.h
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+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 1998, 2001 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 __IICONF_H
+#define __IICONF_H
+
+#include <sys/queue.h>
+#include <dev/iicbus/iic.h>
+
+
+#define IICPRI (PZERO+8) /* XXX sleep/wakeup queue priority */
+
+#define LSB 0x1
+
+/*
+ * Options affecting iicbus_request_bus()
+ */
+#define IIC_DONTWAIT 0
+#define IIC_NOINTR 0
+#define IIC_WAIT 0x1
+#define IIC_INTR 0x2
+#define IIC_INTRWAIT (IIC_INTR | IIC_WAIT)
+#define IIC_RECURSIVE 0x4
+
+/*
+ * i2c modes
+ */
+#define IIC_MASTER 0x1
+#define IIC_SLAVE 0x2
+#define IIC_POLLED 0x4
+
+/*
+ * i2c speed
+ */
+#define IIC_UNKNOWN 0x0
+#define IIC_SLOW 0x1
+#define IIC_FAST 0x2
+#define IIC_FASTEST 0x3
+
+#define IIC_LAST_READ 0x1
+
+/*
+ * callback index
+ */
+#define IIC_REQUEST_BUS 0x1
+#define IIC_RELEASE_BUS 0x2
+
+/*
+ * interrupt events
+ */
+#define INTR_GENERAL 0x1 /* general call received */
+#define INTR_START 0x2 /* the I2C interface is addressed */
+#define INTR_STOP 0x3 /* stop condition received */
+#define INTR_RECEIVE 0x4 /* character received */
+#define INTR_TRANSMIT 0x5 /* character to transmit */
+#define INTR_ERROR 0x6 /* error */
+#define INTR_NOACK 0x7 /* no ack from master receiver */
+
+/*
+ * adapter layer errors
+ */
+#define IIC_NOERR 0x0 /* no error occurred */
+#define IIC_EBUSERR 0x1 /* bus error (hardware not in expected state) */
+#define IIC_ENOACK 0x2 /* ack not received until timeout */
+#define IIC_ETIMEOUT 0x3 /* timeout */
+#define IIC_EBUSBSY 0x4 /* bus busy (reserved by another client) */
+#define IIC_ESTATUS 0x5 /* status error */
+#define IIC_EUNDERFLOW 0x6 /* slave ready for more data */
+#define IIC_EOVERFLOW 0x7 /* too much data */
+#define IIC_ENOTSUPP 0x8 /* request not supported */
+#define IIC_ENOADDR 0x9 /* no address assigned to the interface */
+#define IIC_ERESOURCE 0xa /* resources (memory, whatever) unavailable */
+
+/*
+ * Note that all iicbus functions return IIC_Exxxxx status values,
+ * except iic2errno() (obviously) and iicbus_started() (returns bool).
+ */
+extern int iic2errno(int);
+extern int iicbus_request_bus(device_t, device_t, int);
+extern int iicbus_release_bus(device_t, device_t);
+extern device_t iicbus_alloc_bus(device_t);
+
+extern void iicbus_intr(device_t, int, char *);
+
+extern int iicbus_null_repeated_start(device_t, u_char);
+extern int iicbus_null_callback(device_t, int, caddr_t);
+
+#define iicbus_reset(bus,speed,addr,oldaddr) \
+ (IICBUS_RESET(device_get_parent(bus), speed, addr, oldaddr))
+
+/* basic I2C operations */
+extern int iicbus_started(device_t);
+extern int iicbus_start(device_t, u_char, int);
+extern int iicbus_stop(device_t);
+extern int iicbus_repeated_start(device_t, u_char, int);
+extern int iicbus_write(device_t, const char *, int, int *, int);
+extern int iicbus_read(device_t, char *, int, int *, int, int);
+
+/* single byte read/write functions, start/stop not managed */
+extern int iicbus_write_byte(device_t, char, int);
+extern int iicbus_read_byte(device_t, char *, int);
+
+/* Read/write operations with start/stop conditions managed */
+extern int iicbus_block_write(device_t, u_char, char *, int, int *);
+extern int iicbus_block_read(device_t, u_char, char *, int, int *);
+
+/* vectors of iic operations to pass to bridge */
+int iicbus_transfer(device_t bus, struct iic_msg *msgs, uint32_t nmsgs);
+int iicbus_transfer_excl(device_t bus, struct iic_msg *msgs, uint32_t nmsgs,
+ int how);
+int iicbus_transfer_gen(device_t bus, struct iic_msg *msgs, uint32_t nmsgs);
+
+/*
+ * Simple register read/write routines, but the "register" can be any size.
+ * The transfers are done with iicbus_transfer_excl(). Reads use a repeat-start
+ * between sending the address and reading; writes use a single start/stop.
+ */
+int iicdev_readfrom(device_t _slavedev, uint8_t _regaddr, void *_buffer,
+ uint16_t _buflen, int _waithow);
+int iicdev_writeto(device_t _slavedev, uint8_t _regaddr, void *_buffer,
+ uint16_t _buflen, int _waithow);
+
+#define IICBUS_MODVER 1
+#define IICBUS_MINVER 1
+#define IICBUS_MAXVER 1
+#define IICBUS_PREFVER IICBUS_MODVER
+
+extern driver_t iicbb_driver;
+extern devclass_t iicbb_devclass;
+
+#define IICBB_MODVER 1
+#define IICBB_MINVER 1
+#define IICBB_MAXVER 1
+#define IICBB_PREFVER IICBB_MODVER
+
+#endif