2 * Copyright (c) 2009 Oleksandr Tymoshenko <gonzo@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
35 #include <sys/ioccom.h>
36 #include <sys/kernel.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
40 #include <dev/gpio/gpiobusvar.h>
43 #include "gpiobus_if.h"
47 #define dprintf printf
49 #define dprintf(x, arg...)
52 static int gpioc_probe(device_t dev);
53 static int gpioc_attach(device_t dev);
54 static int gpioc_detach(device_t dev);
56 static d_ioctl_t gpioc_ioctl;
58 static struct cdevsw gpioc_cdevsw = {
59 .d_version = D_VERSION,
60 .d_ioctl = gpioc_ioctl,
65 device_t sc_dev; /* gpiocX dev */
66 device_t sc_pdev; /* gpioX dev */
67 struct cdev *sc_ctl_dev; /* controller device */
72 gpioc_probe(device_t dev)
74 device_set_desc(dev, "GPIO controller");
79 gpioc_attach(device_t dev)
82 struct gpioc_softc *sc;
83 struct make_dev_args devargs;
85 sc = device_get_softc(dev);
87 sc->sc_pdev = device_get_parent(dev);
88 sc->sc_unit = device_get_unit(dev);
89 make_dev_args_init(&devargs);
90 devargs.mda_devsw = &gpioc_cdevsw;
91 devargs.mda_uid = UID_ROOT;
92 devargs.mda_gid = GID_WHEEL;
93 devargs.mda_mode = 0600;
94 devargs.mda_si_drv1 = sc;
95 err = make_dev_s(&devargs, &sc->sc_ctl_dev, "gpioc%d", sc->sc_unit);
97 printf("Failed to create gpioc%d", sc->sc_unit);
105 gpioc_detach(device_t dev)
107 struct gpioc_softc *sc = device_get_softc(dev);
111 destroy_dev(sc->sc_ctl_dev);
113 if ((err = bus_generic_detach(dev)) != 0)
120 gpioc_ioctl(struct cdev *cdev, u_long cmd, caddr_t arg, int fflag,
125 struct gpioc_softc *sc = cdev->si_drv1;
130 bus = GPIO_GET_BUS(sc->sc_pdev);
136 res = GPIO_PIN_MAX(sc->sc_pdev, &max_pin);
137 bcopy(&max_pin, arg, sizeof(max_pin));
140 bcopy(arg, &pin, sizeof(pin));
141 dprintf("get config pin %d\n", pin.gp_pin);
142 res = GPIO_PIN_GETFLAGS(sc->sc_pdev, pin.gp_pin,
147 GPIO_PIN_GETCAPS(sc->sc_pdev, pin.gp_pin, &pin.gp_caps);
148 GPIOBUS_PIN_GETNAME(bus, pin.gp_pin, pin.gp_name);
149 bcopy(&pin, arg, sizeof(pin));
152 bcopy(arg, &pin, sizeof(pin));
153 dprintf("set config pin %d\n", pin.gp_pin);
154 res = GPIO_PIN_GETCAPS(sc->sc_pdev, pin.gp_pin, &caps);
156 res = gpio_check_flags(caps, pin.gp_flags);
158 res = GPIO_PIN_SETFLAGS(sc->sc_pdev, pin.gp_pin,
162 bcopy(arg, &req, sizeof(req));
163 res = GPIO_PIN_GET(sc->sc_pdev, req.gp_pin,
165 dprintf("read pin %d -> %d\n",
166 req.gp_pin, req.gp_value);
167 bcopy(&req, arg, sizeof(req));
170 bcopy(arg, &req, sizeof(req));
171 res = GPIO_PIN_SET(sc->sc_pdev, req.gp_pin,
173 dprintf("write pin %d -> %d\n",
174 req.gp_pin, req.gp_value);
177 bcopy(arg, &req, sizeof(req));
178 dprintf("toggle pin %d\n",
180 res = GPIO_PIN_TOGGLE(sc->sc_pdev, req.gp_pin);
183 bcopy(arg, &pin, sizeof(pin));
184 dprintf("set name on pin %d\n", pin.gp_pin);
185 res = GPIOBUS_PIN_SETNAME(bus, pin.gp_pin,
196 static device_method_t gpioc_methods[] = {
197 /* Device interface */
198 DEVMETHOD(device_probe, gpioc_probe),
199 DEVMETHOD(device_attach, gpioc_attach),
200 DEVMETHOD(device_detach, gpioc_detach),
201 DEVMETHOD(device_shutdown, bus_generic_shutdown),
202 DEVMETHOD(device_suspend, bus_generic_suspend),
203 DEVMETHOD(device_resume, bus_generic_resume),
208 driver_t gpioc_driver = {
211 sizeof(struct gpioc_softc)
214 devclass_t gpioc_devclass;
216 DRIVER_MODULE(gpioc, gpio, gpioc_driver, gpioc_devclass, 0, 0);
217 MODULE_VERSION(gpioc, 1);