/*- * Copyright (c) 2020 Michal Meloun * * 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. */ #include /* * ARMADA 8040 GPIO driver. */ #include "opt_platform.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pic_if.h" #include "syscon_if.h" #define GPIO_LOCK(_sc) mtx_lock(&(_sc)->mtx) #define GPIO_UNLOCK(_sc) mtx_unlock(&(_sc)->mtx) #define GPIO_LOCK_INIT(_sc) mtx_init(&_sc->mtx, \ device_get_nameunit(_sc->dev), "mvebu_gpio", MTX_DEF) #define GPIO_LOCK_DESTROY(_sc) mtx_destroy(&_sc->mtx); #define GPIO_ASSERT_LOCKED(_sc) mtx_assert(&_sc->mtx, MA_OWNED); #define GPIO_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->mtx, MA_NOTOWNED); #define GPIO_DATA_OUT 0x00 #define GPIO_CONTROL 0x04 #define GPIO_BLINK_ENA 0x08 #define GPIO_DATA_IN_POL 0x0C #define GPIO_DATA_IN 0x10 #define GPIO_INT_CAUSE 0x14 #define GPIO_INT_MASK 0x18 #define GPIO_INT_LEVEL_MASK 0x1C #define GPIO_CONTROL_SET 0x28 #define GPIO_CONTROL_CLR 0x2C #define GPIO_DATA_SET 0x30 #define GPIO_DATA_CLR 0x34 #define GPIO_BIT(_p) ((_p) % 32) #define GPIO_REGNUM(_p) ((_p) / 32) #define MV_GPIO_MAX_NIRQS 4 #define MV_GPIO_MAX_NPINS 32 struct mvebu_gpio_irqsrc { struct intr_irqsrc isrc; u_int irq; bool is_level; bool is_inverted; }; struct mvebu_gpio_softc; struct mvebu_gpio_irq_cookie { struct mvebu_gpio_softc *sc; int bank_num; }; struct mvebu_gpio_softc { device_t dev; device_t busdev; struct mtx mtx; struct syscon *syscon; uint32_t offset; struct resource *irq_res[MV_GPIO_MAX_NIRQS]; void *irq_ih[MV_GPIO_MAX_NIRQS]; struct mvebu_gpio_irq_cookie irq_cookies[MV_GPIO_MAX_NIRQS]; int gpio_npins; struct gpio_pin gpio_pins[MV_GPIO_MAX_NPINS]; struct mvebu_gpio_irqsrc *isrcs; }; static struct ofw_compat_data compat_data[] = { {"marvell,armada-8k-gpio", 1}, {NULL, 0} }; /* -------------------------------------------------------------------------- * * GPIO * */ static inline void gpio_write(struct mvebu_gpio_softc *sc, bus_size_t reg, struct gpio_pin *pin, uint32_t val) { int bit; bit = GPIO_BIT(pin->gp_pin); SYSCON_WRITE_4(sc->syscon, sc->offset + GPIO_REGNUM(pin->gp_pin) + reg, (val & 1) << bit); } static inline uint32_t gpio_read(struct mvebu_gpio_softc *sc, bus_size_t reg, struct gpio_pin *pin) { int bit; uint32_t val; bit = GPIO_BIT(pin->gp_pin); val = SYSCON_READ_4(sc->syscon, sc->offset + GPIO_REGNUM(pin->gp_pin) + reg); return (val >> bit) & 1; } static inline void gpio_modify(struct mvebu_gpio_softc *sc, bus_size_t reg, struct gpio_pin *pin, uint32_t val) { int bit; bit = GPIO_BIT(pin->gp_pin); SYSCON_MODIFY_4(sc->syscon, sc->offset + GPIO_REGNUM(pin->gp_pin) + reg, 1 << bit, (val & 1) << bit); } static void mvebu_gpio_pin_configure(struct mvebu_gpio_softc *sc, struct gpio_pin *pin, unsigned int flags) { if ((flags & (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT)) == 0) return; /* Manage input/output */ pin->gp_flags &= ~(GPIO_PIN_INPUT | GPIO_PIN_OUTPUT); if (flags & GPIO_PIN_OUTPUT) { pin->gp_flags |= GPIO_PIN_OUTPUT; gpio_write(sc, GPIO_CONTROL_CLR, pin, 1); } else { pin->gp_flags |= GPIO_PIN_INPUT; gpio_write(sc, GPIO_CONTROL_SET, pin, 1); } } static device_t mvebu_gpio_get_bus(device_t dev) { struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); return (sc->busdev); } static int mvebu_gpio_pin_max(device_t dev, int *maxpin) { struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); *maxpin = sc->gpio_npins - 1; return (0); } static int mvebu_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps) { struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); if (pin >= sc->gpio_npins) return (EINVAL); *caps = sc->gpio_pins[pin].gp_caps; return (0); } static int mvebu_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags) { struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); if (pin >= sc->gpio_npins) return (EINVAL); *flags = sc->gpio_pins[pin].gp_flags; return (0); } static int mvebu_gpio_pin_getname(device_t dev, uint32_t pin, char *name) { struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); if (pin >= sc->gpio_npins) return (EINVAL); memcpy(name, sc->gpio_pins[pin].gp_name, GPIOMAXNAME); return (0); } static int mvebu_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags) { struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); if (pin >= sc->gpio_npins) return (EINVAL); mvebu_gpio_pin_configure(sc, &sc->gpio_pins[pin], flags); return (0); } static int mvebu_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value) { struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); if (pin >= sc->gpio_npins) return (EINVAL); if (value != 0) gpio_write(sc, GPIO_DATA_SET, &sc->gpio_pins[pin], 1); else gpio_write(sc, GPIO_DATA_CLR, &sc->gpio_pins[pin], 1); return (0); } static int mvebu_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val) { struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); if (pin >= sc->gpio_npins) return (EINVAL); GPIO_LOCK(sc); *val = gpio_read(sc, GPIO_DATA_IN, &sc->gpio_pins[pin]); *val ^= gpio_read(sc, GPIO_DATA_IN_POL, &sc->gpio_pins[pin]); GPIO_UNLOCK(sc); return (0); } static int mvebu_gpio_pin_toggle(device_t dev, uint32_t pin) { struct mvebu_gpio_softc *sc; uint32_t val; sc = device_get_softc(dev); if (pin >= sc->gpio_npins) return (EINVAL); GPIO_LOCK(sc); mvebu_gpio_pin_get(sc->dev, pin, &val); if (val != 0) gpio_write(sc, GPIO_DATA_CLR, &sc->gpio_pins[pin], 1); else gpio_write(sc, GPIO_DATA_SET, &sc->gpio_pins[pin], 1); GPIO_UNLOCK(sc); return (0); } /* -------------------------------------------------------------------------- * * Interrupts * */ static inline void intr_modify(struct mvebu_gpio_softc *sc, bus_addr_t reg, struct mvebu_gpio_irqsrc *mgi, uint32_t val) { int bit; bit = GPIO_BIT(mgi->irq); SYSCON_MODIFY_4(sc->syscon, sc->offset + GPIO_REGNUM(mgi->irq) + reg, 1 << bit, (val & 1) << bit); } static inline void mvebu_gpio_isrc_mask(struct mvebu_gpio_softc *sc, struct mvebu_gpio_irqsrc *mgi, uint32_t val) { if (mgi->is_level) intr_modify(sc, GPIO_INT_LEVEL_MASK, mgi, val); else intr_modify(sc, GPIO_INT_MASK, mgi, val); } static inline void mvebu_gpio_isrc_eoi(struct mvebu_gpio_softc *sc, struct mvebu_gpio_irqsrc *mgi) { int bit; if (!mgi->is_level) { bit = GPIO_BIT(mgi->irq); SYSCON_WRITE_4(sc->syscon, sc->offset + GPIO_REGNUM(mgi->irq) + GPIO_INT_CAUSE, ~(1 << bit)); } } static int mvebu_gpio_pic_attach(struct mvebu_gpio_softc *sc) { int rv; uint32_t irq; const char *name; sc->isrcs = malloc(sizeof(*sc->isrcs) * sc->gpio_npins, M_DEVBUF, M_WAITOK | M_ZERO); name = device_get_nameunit(sc->dev); for (irq = 0; irq < sc->gpio_npins; irq++) { sc->isrcs[irq].irq = irq; sc->isrcs[irq].is_level = false; sc->isrcs[irq].is_inverted = false; rv = intr_isrc_register(&sc->isrcs[irq].isrc, sc->dev, 0, "%s,%u", name, irq); if (rv != 0) return (rv); /* XXX deregister ISRCs */ } if (intr_pic_register(sc->dev, OF_xref_from_node(ofw_bus_get_node(sc->dev))) == NULL) return (ENXIO); return (0); } static int mvebu_gpio_pic_detach(struct mvebu_gpio_softc *sc) { /* * There has not been established any procedure yet * how to detach PIC from living system correctly. */ device_printf(sc->dev, "%s: not implemented yet\n", __func__); return (EBUSY); } static void mvebu_gpio_pic_disable_intr(device_t dev, struct intr_irqsrc *isrc) { struct mvebu_gpio_softc *sc; struct mvebu_gpio_irqsrc *mgi; sc = device_get_softc(dev); mgi = (struct mvebu_gpio_irqsrc *)isrc; mvebu_gpio_isrc_mask(sc, mgi, 0); } static void mvebu_gpio_pic_enable_intr(device_t dev, struct intr_irqsrc *isrc) { struct mvebu_gpio_softc *sc; struct mvebu_gpio_irqsrc *mgi; sc = device_get_softc(dev); mgi = (struct mvebu_gpio_irqsrc *)isrc; mvebu_gpio_isrc_mask(sc, mgi, 1); } static int mvebu_gpio_pic_map_fdt(struct mvebu_gpio_softc *sc, u_int ncells, pcell_t *cells, u_int *irqp, bool *invertedp, bool *levelp) { bool inverted, level; /* * The first cell is the interrupt number. * The second cell is used to specify flags: * bits[3:0] trigger type and level flags: * 1 = low-to-high edge triggered. * 2 = high-to-low edge triggered. * 4 = active high level-sensitive. * 8 = active low level-sensitive. */ if (ncells != 2 || cells[0] >= sc->gpio_npins) return (EINVAL); switch (cells[1]) { case 1: inverted = false; level = false; break; case 2: inverted = true; level = false; break; case 4: inverted = false; level = true; break; case 8: inverted = true; level = true; break; default: return (EINVAL); } *irqp = cells[0]; if (invertedp != NULL) *invertedp = inverted; if (levelp != NULL) *levelp = level; return (0); } static int mvebu_gpio_pic_map_gpio(struct mvebu_gpio_softc *sc, u_int gpio_pin_num, u_int gpio_pin_flags, u_int intr_mode, u_int *irqp, bool *invertedp, bool *levelp) { bool inverted, level; if (gpio_pin_num >= sc->gpio_npins) return (EINVAL); switch (intr_mode) { case GPIO_INTR_LEVEL_LOW: inverted = true; level = true; break; case GPIO_INTR_LEVEL_HIGH: inverted = false; level = true; break; case GPIO_INTR_CONFORM: case GPIO_INTR_EDGE_RISING: inverted = false; level = false; break; case GPIO_INTR_EDGE_FALLING: inverted = true; level = false; break; default: return (EINVAL); } *irqp = gpio_pin_num; if (invertedp != NULL) *invertedp = inverted; if (levelp != NULL) *levelp = level; return (0); } static int mvebu_gpio_pic_map_intr(device_t dev, struct intr_map_data *data, struct intr_irqsrc **isrcp) { int rv; u_int irq; struct mvebu_gpio_softc *sc; sc = device_get_softc(dev); if (data->type == INTR_MAP_DATA_FDT) { struct intr_map_data_fdt *daf; daf = (struct intr_map_data_fdt *)data; rv = mvebu_gpio_pic_map_fdt(sc, daf->ncells, daf->cells, &irq, NULL, NULL); } else if (data->type == INTR_MAP_DATA_GPIO) { struct intr_map_data_gpio *dag; dag = (struct intr_map_data_gpio *)data; rv = mvebu_gpio_pic_map_gpio(sc, dag->gpio_pin_num, dag->gpio_pin_flags, dag->gpio_intr_mode, &irq, NULL, NULL); } else return (ENOTSUP); if (rv == 0) *isrcp = &sc->isrcs[irq].isrc; return (rv); } static void mvebu_gpio_pic_post_filter(device_t dev, struct intr_irqsrc *isrc) { struct mvebu_gpio_softc *sc; struct mvebu_gpio_irqsrc *mgi; sc = device_get_softc(dev); mgi = (struct mvebu_gpio_irqsrc *)isrc; if (mgi->is_level) mvebu_gpio_isrc_eoi(sc, mgi); } static void mvebu_gpio_pic_post_ithread(device_t dev, struct intr_irqsrc *isrc) { struct mvebu_gpio_softc *sc; struct mvebu_gpio_irqsrc *mgi; sc = device_get_softc(dev); mgi = (struct mvebu_gpio_irqsrc *)isrc; mvebu_gpio_isrc_mask(sc, mgi, 1); } static void mvebu_gpio_pic_pre_ithread(device_t dev, struct intr_irqsrc *isrc) { struct mvebu_gpio_softc *sc; struct mvebu_gpio_irqsrc *mgi; sc = device_get_softc(dev); mgi = (struct mvebu_gpio_irqsrc *)isrc; mvebu_gpio_isrc_mask(sc, mgi, 0); if (mgi->is_level) mvebu_gpio_isrc_eoi(sc, mgi); } static int mvebu_gpio_pic_setup_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { u_int irq; bool inverted, level; int rv; struct mvebu_gpio_softc *sc; struct mvebu_gpio_irqsrc *mgi; sc = device_get_softc(dev); mgi = (struct mvebu_gpio_irqsrc *)isrc; if (data == NULL) return (ENOTSUP); /* Get and check config for an interrupt. */ if (data->type == INTR_MAP_DATA_FDT) { struct intr_map_data_fdt *daf; daf = (struct intr_map_data_fdt *)data; rv = mvebu_gpio_pic_map_fdt(sc, daf->ncells, daf->cells, &irq, &inverted, &level); } else if (data->type == INTR_MAP_DATA_GPIO) { struct intr_map_data_gpio *dag; dag = (struct intr_map_data_gpio *)data; rv = mvebu_gpio_pic_map_gpio(sc, dag->gpio_pin_num, dag->gpio_pin_flags, dag->gpio_intr_mode, &irq, &inverted, &level); } else return (ENOTSUP); if (rv != 0) return (EINVAL); /* * If this is a setup for another handler, * only check that its configuration match. */ if (isrc->isrc_handlers != 0) return ( mgi->is_level == level && mgi->is_inverted == inverted ? 0 : EINVAL); mgi->is_level = level; mgi->is_inverted = inverted; GPIO_LOCK(sc); intr_modify(sc, GPIO_DATA_IN_POL, mgi, inverted ? 1 : 0); mvebu_gpio_pic_enable_intr(dev, isrc); GPIO_UNLOCK(sc); return (0); } static int mvebu_gpio_pic_teardown_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mvebu_gpio_softc *sc; struct mvebu_gpio_irqsrc *mgi; sc = device_get_softc(dev); mgi = (struct mvebu_gpio_irqsrc *)isrc; if (isrc->isrc_handlers == 0) mvebu_gpio_isrc_mask(sc, mgi, 0); return (0); } /* -------------------------------------------------------------------------- * * Bus * */ static int mvebu_gpio_intr(void *arg) { u_int i, lvl, edge; struct mvebu_gpio_softc *sc; struct trapframe *tf; struct mvebu_gpio_irqsrc *mgi; struct mvebu_gpio_irq_cookie *cookie; cookie = (struct mvebu_gpio_irq_cookie *)arg; sc = cookie->sc; tf = curthread->td_intr_frame; for (i = 0; i < sc->gpio_npins; i++) { lvl = gpio_read(sc, GPIO_DATA_IN, &sc->gpio_pins[i]); lvl &= gpio_read(sc, GPIO_INT_LEVEL_MASK, &sc->gpio_pins[i]); edge = gpio_read(sc, GPIO_DATA_IN, &sc->gpio_pins[i]); edge &= gpio_read(sc, GPIO_INT_LEVEL_MASK, &sc->gpio_pins[i]); if (edge == 0 && lvl == 0) continue; mgi = &sc->isrcs[i]; if (!mgi->is_level) mvebu_gpio_isrc_eoi(sc, mgi); if (intr_isrc_dispatch(&mgi->isrc, tf) != 0) { mvebu_gpio_isrc_mask(sc, mgi, 0); if (mgi->is_level) mvebu_gpio_isrc_eoi(sc, mgi); device_printf(sc->dev, "Stray irq %u disabled\n", mgi->irq); } } return (FILTER_HANDLED); } static int mvebu_gpio_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) return (ENXIO); device_set_desc(dev, "Marvell Integrated GPIO Controller"); return (0); } static int mvebu_gpio_detach(device_t dev) { struct mvebu_gpio_softc *sc; int i; sc = device_get_softc(dev); KASSERT(mtx_initialized(&sc->mtx), ("gpio mutex not initialized")); for (i = 0; i < MV_GPIO_MAX_NIRQS; i++) { if (sc->irq_ih[i] != NULL) bus_teardown_intr(dev, sc->irq_res[i], sc->irq_ih[i]); } if (sc->isrcs != NULL) mvebu_gpio_pic_detach(sc); gpiobus_detach_bus(dev); for (i = 0; i < MV_GPIO_MAX_NIRQS; i++) { if (sc->irq_res[i] != NULL) bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res[i]); } GPIO_LOCK_DESTROY(sc); return(0); } static int mvebu_gpio_attach(device_t dev) { struct mvebu_gpio_softc *sc; phandle_t node; struct gpio_pin *pin; pcell_t pincnt; int i, rv, rid; sc = device_get_softc(dev); sc->dev = dev; node = ofw_bus_get_node(dev); GPIO_LOCK_INIT(sc); pincnt = 0; rv = OF_getencprop(node, "ngpios", &pincnt, sizeof(pcell_t)); if (rv < 0) { device_printf(dev, "ERROR: no pin-count or ngpios entry found!\n"); return (ENXIO); } sc->gpio_npins = MIN(pincnt, MV_GPIO_MAX_NPINS); if (bootverbose) device_printf(dev, "%d pins available\n", sc->gpio_npins); rv = OF_getencprop(node, "offset", &sc->offset, sizeof(sc->offset)); if (rv == -1) { device_printf(dev, "ERROR: no 'offset' property found!\n"); return (ENXIO); } if (SYSCON_GET_HANDLE(sc->dev, &sc->syscon) != 0 || sc->syscon == NULL) { device_printf(dev, "ERROR: cannot get syscon handle!\n"); return (ENXIO); } /* Allocate interrupts. */ for (i = 0; i < MV_GPIO_MAX_NIRQS; i++) { sc->irq_cookies[i].sc = sc; sc->irq_cookies[i].bank_num = i; rid = i; sc->irq_res[i] = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); if (sc->irq_res[i] == NULL) break; if ((bus_setup_intr(dev, sc->irq_res[i], INTR_TYPE_MISC | INTR_MPSAFE, mvebu_gpio_intr, NULL, &sc->irq_cookies[i], &sc->irq_ih[i]))) { device_printf(dev, "WARNING: unable to register interrupt handler\n"); mvebu_gpio_detach(dev); return (ENXIO); } } /* Init GPIO pins */ for (i = 0; i < sc->gpio_npins; i++) { pin = sc->gpio_pins + i; pin->gp_pin = i; if (sc->irq_res[0] != NULL) pin->gp_caps = GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | GPIO_INTR_LEVEL_LOW | GPIO_INTR_LEVEL_HIGH | GPIO_INTR_EDGE_RISING | GPIO_INTR_EDGE_FALLING; else pin->gp_caps = GPIO_PIN_INPUT | GPIO_PIN_OUTPUT; pin->gp_flags = gpio_read(sc, GPIO_CONTROL, &sc->gpio_pins[i]) == 0 ? GPIO_PIN_OUTPUT : GPIO_PIN_INPUT; snprintf(pin->gp_name, GPIOMAXNAME, "gpio%d", i); /* Init HW */ gpio_modify(sc, GPIO_INT_MASK, pin, 0); gpio_modify(sc, GPIO_INT_LEVEL_MASK, pin, 0); gpio_modify(sc, GPIO_INT_CAUSE, pin, 0); gpio_modify(sc, GPIO_DATA_IN_POL, pin, 0); gpio_modify(sc, GPIO_BLINK_ENA, pin, 0); } if (sc->irq_res[0] != NULL) { rv = mvebu_gpio_pic_attach(sc); if (rv != 0) { device_printf(dev, "WARNING: unable to attach PIC\n"); mvebu_gpio_detach(dev); return (rv); } } sc->busdev = gpiobus_attach_bus(dev); if (sc->busdev == NULL) { mvebu_gpio_detach(dev); return (ENXIO); } return (bus_generic_attach(dev)); } static int mvebu_gpio_map_gpios(device_t dev, phandle_t pdev, phandle_t gparent, int gcells, pcell_t *gpios, uint32_t *pin, uint32_t *flags) { if (gcells != 2) return (ERANGE); *pin = gpios[0]; *flags= gpios[1]; return (0); } static phandle_t mvebu_gpio_get_node(device_t bus, device_t dev) { /* We only have one child, the GPIO bus, which needs our own node. */ return (ofw_bus_get_node(bus)); } static device_method_t mvebu_gpio_methods[] = { DEVMETHOD(device_probe, mvebu_gpio_probe), DEVMETHOD(device_attach, mvebu_gpio_attach), DEVMETHOD(device_detach, mvebu_gpio_detach), /* Interrupt controller interface */ DEVMETHOD(pic_disable_intr, mvebu_gpio_pic_disable_intr), DEVMETHOD(pic_enable_intr, mvebu_gpio_pic_enable_intr), DEVMETHOD(pic_map_intr, mvebu_gpio_pic_map_intr), DEVMETHOD(pic_setup_intr, mvebu_gpio_pic_setup_intr), DEVMETHOD(pic_teardown_intr, mvebu_gpio_pic_teardown_intr), DEVMETHOD(pic_post_filter, mvebu_gpio_pic_post_filter), DEVMETHOD(pic_post_ithread, mvebu_gpio_pic_post_ithread), DEVMETHOD(pic_pre_ithread, mvebu_gpio_pic_pre_ithread), /* GPIO protocol */ DEVMETHOD(gpio_get_bus, mvebu_gpio_get_bus), DEVMETHOD(gpio_pin_max, mvebu_gpio_pin_max), DEVMETHOD(gpio_pin_getname, mvebu_gpio_pin_getname), DEVMETHOD(gpio_pin_getflags, mvebu_gpio_pin_getflags), DEVMETHOD(gpio_pin_getcaps, mvebu_gpio_pin_getcaps), DEVMETHOD(gpio_pin_setflags, mvebu_gpio_pin_setflags), DEVMETHOD(gpio_pin_get, mvebu_gpio_pin_get), DEVMETHOD(gpio_pin_set, mvebu_gpio_pin_set), DEVMETHOD(gpio_pin_toggle, mvebu_gpio_pin_toggle), DEVMETHOD(gpio_map_gpios, mvebu_gpio_map_gpios), /* ofw_bus interface */ DEVMETHOD(ofw_bus_get_node, mvebu_gpio_get_node), DEVMETHOD_END }; static devclass_t mvebu_gpio_devclass; static DEFINE_CLASS_0(gpio, mvebu_gpio_driver, mvebu_gpio_methods, sizeof(struct mvebu_gpio_softc)); EARLY_DRIVER_MODULE(mvebu_gpio, simplebus, mvebu_gpio_driver, mvebu_gpio_devclass, NULL, NULL, BUS_PASS_TIMER + BUS_PASS_ORDER_LAST);