1 /*- 2 * Copyright (c) 2020 Alstom Group. 3 * Copyright (c) 2020 Semihalf. 4 * Copyright (c) 2015 Justin Hibbits 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 29 #define MAXPIN (31) 30 31 #define BIT(x) (1 << (x)) 32 33 #define VALID_PIN(u) ((u) >= 0 && (u) <= MAXPIN) 34 #define DEFAULT_CAPS (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | \ 35 GPIO_PIN_OPENDRAIN | GPIO_PIN_PUSHPULL) 36 37 #define GPIO_LOCK(sc) mtx_lock_spin(&(sc)->sc_mtx) 38 #define GPIO_UNLOCK(sc) mtx_unlock_spin(&(sc)->sc_mtx) 39 #define GPIO_LOCK_INIT(sc) \ 40 mtx_init(&(sc)->sc_mtx, device_get_nameunit((sc)->dev), \ 41 "gpio", MTX_SPIN) 42 #define GPIO_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx); 43 44 #define GPIO_GPDIR 0x0 45 #define GPIO_GPODR 0x4 46 #define GPIO_GPDAT 0x8 47 #define GPIO_GPIER 0xc 48 #define GPIO_GPIMR 0x10 49 #define GPIO_GPICR 0x14 50 #define GPIO_GPIBE 0x18 51 52 struct qoriq_gpio_softc { 53 device_t dev; 54 device_t busdev; 55 struct mtx sc_mtx; 56 struct resource *sc_mem; 57 struct gpio_pin sc_pins[MAXPIN + 1]; 58 }; 59 60 device_attach_t qoriq_gpio_attach; 61 device_detach_t qoriq_gpio_detach; 62 63 DECLARE_CLASS(qoriq_gpio_driver); 64