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
33 #include "opt_platform.h"
36 #include <sys/mutex.h>
39 #include <dev/ofw/ofw_bus_subr.h>
44 #define GPIOBUS_IVAR(d) (struct gpiobus_ivar *) device_get_ivars(d)
45 #define GPIOBUS_SOFTC(d) (struct gpiobus_softc *) device_get_softc(d)
46 #define GPIOBUS_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
47 #define GPIOBUS_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
48 #define GPIOBUS_LOCK_INIT(_sc) mtx_init(&_sc->sc_mtx, \
49 device_get_nameunit(_sc->sc_dev), "gpiobus", MTX_DEF)
50 #define GPIOBUS_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx)
51 #define GPIOBUS_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED)
52 #define GPIOBUS_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED)
56 struct mtx sc_mtx; /* bus mutex */
57 device_t sc_busdev; /* bus device */
58 device_t sc_owner; /* bus owner */
59 device_t sc_dev; /* driver device */
60 int sc_npins; /* total pins on bus */
61 int *sc_pins_mapped; /* mark mapped pins */
66 uint32_t npins; /* pins total */
67 uint32_t *flags; /* pins flags */
68 uint32_t *pins; /* pins map */
72 struct ofw_gpiobus_devinfo {
73 struct gpiobus_ivar opd_dinfo;
74 struct ofw_bus_devinfo opd_obdinfo;
78 gpio_map_gpios(device_t bus, phandle_t dev, phandle_t gparent, int gcells,
79 pcell_t *gpios, uint32_t *pin, uint32_t *flags)
81 return (GPIO_MAP_GPIOS(bus, dev, gparent, gcells, gpios, pin, flags));
84 device_t ofw_gpiobus_add_fdt_child(device_t, phandle_t);
86 void gpiobus_print_pins(struct gpiobus_ivar *);
88 extern driver_t gpiobus_driver;
90 #endif /* __GPIOBUS_H__ */