1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1998 Nicolas Souchu
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
| 1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1998 Nicolas Souchu
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
|
28 * $FreeBSD: stable/11/sys/dev/iicbus/iicbus.h 330897 2018-03-14 03:19:51Z eadler $
| 28 * $FreeBSD: stable/11/sys/dev/iicbus/iicbus.h 331501 2018-03-24 22:39:38Z ian $
|
29 *
30 */
31#ifndef __IICBUS_H
32#define __IICBUS_H
33
34#include <sys/_lock.h>
35#include <sys/_mutex.h>
36
37#define IICBUS_IVAR(d) (struct iicbus_ivar *) device_get_ivars(d)
38#define IICBUS_SOFTC(d) (struct iicbus_softc *) device_get_softc(d)
39
40struct iicbus_softc
41{
42 device_t dev; /* Myself */
43 device_t owner; /* iicbus owner device structure */
44 u_int owncount; /* iicbus ownership nesting count */
45 u_char started; /* address of the 'started' slave
46 * 0 if no start condition succeeded */
47 u_char strict; /* deny operations that violate the
48 * I2C protocol */
49 struct mtx lock;
50 u_int bus_freq; /* Configured bus Hz. */
51};
52
53struct iicbus_ivar
54{
55 uint32_t addr;
56 struct resource_list rl;
57 bool nostop;
58};
59
60enum {
61 IICBUS_IVAR_ADDR, /* Address or base address */
62 IICBUS_IVAR_NOSTOP, /* nostop defaults */
63};
64
65#define IICBUS_ACCESSOR(A, B, T) \
66 __BUS_ACCESSOR(iicbus, A, IICBUS, B, T)
67
68IICBUS_ACCESSOR(addr, ADDR, uint32_t)
69IICBUS_ACCESSOR(nostop, NOSTOP, bool)
70
71#define IICBUS_LOCK(sc) mtx_lock(&(sc)->lock)
72#define IICBUS_UNLOCK(sc) mtx_unlock(&(sc)->lock)
73#define IICBUS_ASSERT_LOCKED(sc) mtx_assert(&(sc)->lock, MA_OWNED)
74
75int iicbus_generic_intr(device_t dev, int event, char *buf);
76void iicbus_init_frequency(device_t dev, u_int bus_freq);
77
78extern driver_t iicbus_driver;
79extern devclass_t iicbus_devclass;
| 29 *
30 */
31#ifndef __IICBUS_H
32#define __IICBUS_H
33
34#include <sys/_lock.h>
35#include <sys/_mutex.h>
36
37#define IICBUS_IVAR(d) (struct iicbus_ivar *) device_get_ivars(d)
38#define IICBUS_SOFTC(d) (struct iicbus_softc *) device_get_softc(d)
39
40struct iicbus_softc
41{
42 device_t dev; /* Myself */
43 device_t owner; /* iicbus owner device structure */
44 u_int owncount; /* iicbus ownership nesting count */
45 u_char started; /* address of the 'started' slave
46 * 0 if no start condition succeeded */
47 u_char strict; /* deny operations that violate the
48 * I2C protocol */
49 struct mtx lock;
50 u_int bus_freq; /* Configured bus Hz. */
51};
52
53struct iicbus_ivar
54{
55 uint32_t addr;
56 struct resource_list rl;
57 bool nostop;
58};
59
60enum {
61 IICBUS_IVAR_ADDR, /* Address or base address */
62 IICBUS_IVAR_NOSTOP, /* nostop defaults */
63};
64
65#define IICBUS_ACCESSOR(A, B, T) \
66 __BUS_ACCESSOR(iicbus, A, IICBUS, B, T)
67
68IICBUS_ACCESSOR(addr, ADDR, uint32_t)
69IICBUS_ACCESSOR(nostop, NOSTOP, bool)
70
71#define IICBUS_LOCK(sc) mtx_lock(&(sc)->lock)
72#define IICBUS_UNLOCK(sc) mtx_unlock(&(sc)->lock)
73#define IICBUS_ASSERT_LOCKED(sc) mtx_assert(&(sc)->lock, MA_OWNED)
74
75int iicbus_generic_intr(device_t dev, int event, char *buf);
76void iicbus_init_frequency(device_t dev, u_int bus_freq);
77
78extern driver_t iicbus_driver;
79extern devclass_t iicbus_devclass;
|
| 80extern driver_t ofw_iicbus_driver;
81extern devclass_t ofw_iicbus_devclass;
|
80
81#endif
| 82
83#endif
|