2016-04-07 15:11:24 +00:00
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/*-
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* Copyright 2016 Stanislav Galabov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_platform.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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#include <sys/resource.h>
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#include <sys/gpio.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <mips/mediatek/mtk_soc.h>
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#include <dev/gpio/gpiobusvar.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <gnu/dts/include/dt-bindings/interrupt-controller/irq.h>
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#include "gpio_if.h"
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#include "pic_if.h"
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#define MTK_GPIO_PINS 32
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2016-04-20 14:36:45 +00:00
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enum mtk_gpio_regs {
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GPIO_PIOINT = 0,
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GPIO_PIOEDGE,
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GPIO_PIORENA,
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GPIO_PIOFENA,
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GPIO_PIODATA,
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GPIO_PIODIR,
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GPIO_PIOPOL,
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GPIO_PIOSET,
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GPIO_PIORESET,
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GPIO_PIOTOG,
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GPIO_PIOMAX
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};
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2016-04-07 15:11:24 +00:00
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struct mtk_gpio_pin_irqsrc {
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struct intr_irqsrc isrc;
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u_int irq;
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};
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struct mtk_gpio_pin {
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uint32_t pin_caps;
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uint32_t pin_flags;
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enum intr_trigger intr_trigger;
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enum intr_polarity intr_polarity;
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char pin_name[GPIOMAXNAME];
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struct mtk_gpio_pin_irqsrc pin_irqsrc;
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};
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struct mtk_gpio_softc {
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device_t dev;
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device_t busdev;
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struct resource *res[2];
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struct mtx mtx;
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struct mtk_gpio_pin pins[MTK_GPIO_PINS];
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void *intrhand;
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2016-04-20 14:36:45 +00:00
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uint8_t regs[GPIO_PIOMAX];
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2016-04-07 15:11:24 +00:00
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uint32_t num_pins;
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uint8_t do_remap;
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};
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#define PIC_INTR_ISRC(sc, irq) (&(sc)->pins[(irq)].pin_irqsrc.isrc)
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static struct resource_spec mtk_gpio_spec[] = {
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{ SYS_RES_MEMORY, 0, RF_ACTIVE },
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{ SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
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{ -1, 0 }
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};
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static int mtk_gpio_probe(device_t dev);
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static int mtk_gpio_attach(device_t dev);
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static int mtk_gpio_detach(device_t dev);
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static int mtk_gpio_intr(void *arg);
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#define MTK_GPIO_LOCK(sc) mtx_lock_spin(&(sc)->mtx)
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#define MTK_GPIO_UNLOCK(sc) mtx_unlock_spin(&(sc)->mtx)
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#define MTK_GPIO_LOCK_INIT(sc) \
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mtx_init(&(sc)->mtx, device_get_nameunit((sc)->dev), \
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"mtk_gpio", MTX_SPIN)
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#define MTK_GPIO_LOCK_DESTROY(sc) mtx_destroy(&(sc)->mtx)
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2016-04-20 14:36:45 +00:00
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#define MTK_WRITE_4(sc, reg, val) \
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bus_write_4((sc)->res[0], (sc)->regs[(reg)], (val))
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#define MTK_READ_4(sc, reg) \
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bus_read_4((sc)->res[0], (sc)->regs[(reg)])
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2016-04-07 15:11:24 +00:00
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static struct ofw_compat_data compat_data[] = {
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{ "ralink,rt2880-gpio", 1 },
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{ "ralink,rt3050-gpio", 1 },
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{ "ralink,rt3352-gpio", 1 },
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{ "ralink,rt3883-gpio", 1 },
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{ "ralink,rt5350-gpio", 1 },
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{ "ralink,mt7620a-gpio", 1 },
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{ NULL, 0 }
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};
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static int
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mtk_gpio_probe(device_t dev)
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{
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phandle_t node;
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
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return (ENXIO);
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node = ofw_bus_get_node(dev);
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if (!OF_hasprop(node, "gpio-controller"))
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return (ENXIO);
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device_set_desc(dev, "MTK GPIO Controller (v1)");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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mtk_pic_register_isrcs(struct mtk_gpio_softc *sc)
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{
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int error;
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uint32_t irq;
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struct intr_irqsrc *isrc;
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const char *name;
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name = device_get_nameunit(sc->dev);
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for (irq = 0; irq < sc->num_pins; irq++) {
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sc->pins[irq].pin_irqsrc.irq = irq;
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isrc = PIC_INTR_ISRC(sc, irq);
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error = intr_isrc_register(isrc, sc->dev, 0, "%s", name);
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if (error != 0) {
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/* XXX call intr_isrc_deregister */
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device_printf(sc->dev, "%s failed", __func__);
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return (error);
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}
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}
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return (0);
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}
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static int
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mtk_gpio_pin_set_direction(struct mtk_gpio_softc *sc, uint32_t pin,
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uint32_t dir)
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{
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uint32_t regval, mask = (1u << pin);
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if (!(sc->pins[pin].pin_caps & dir))
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return (EINVAL);
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2016-04-20 14:36:45 +00:00
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regval = MTK_READ_4(sc, GPIO_PIODIR);
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2016-04-07 15:11:24 +00:00
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if (dir == GPIO_PIN_INPUT)
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regval &= ~mask;
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else
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regval |= mask;
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2016-04-20 14:36:45 +00:00
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MTK_WRITE_4(sc, GPIO_PIODIR, regval);
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2016-04-07 15:11:24 +00:00
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sc->pins[pin].pin_flags &= ~(GPIO_PIN_INPUT | GPIO_PIN_OUTPUT);
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sc->pins[pin].pin_flags |= dir;
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return (0);
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}
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static int
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mtk_gpio_pin_set_invert(struct mtk_gpio_softc *sc, uint32_t pin, uint32_t val)
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{
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uint32_t regval, mask = (1u << pin);
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2016-04-20 14:36:45 +00:00
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regval = MTK_READ_4(sc, GPIO_PIOPOL);
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2016-04-07 15:11:24 +00:00
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if (val)
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regval |= mask;
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else
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regval &= ~mask;
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2016-04-20 14:36:45 +00:00
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MTK_WRITE_4(sc, GPIO_PIOPOL, regval);
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2016-04-07 15:11:24 +00:00
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sc->pins[pin].pin_flags &= ~(GPIO_PIN_INVIN | GPIO_PIN_INVOUT);
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sc->pins[pin].pin_flags |= val;
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return (0);
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}
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static void
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mtk_gpio_pin_probe(struct mtk_gpio_softc *sc, uint32_t pin)
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{
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uint32_t mask = (1u << pin);
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uint32_t val;
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/* Clear cached gpio config */
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sc->pins[pin].pin_flags = 0;
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2016-04-20 14:36:45 +00:00
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val = MTK_READ_4(sc, GPIO_PIORENA) |
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MTK_READ_4(sc, GPIO_PIOFENA);
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2016-04-07 15:11:24 +00:00
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if (val & mask) {
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/* Pin is in interrupt mode */
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sc->pins[pin].intr_trigger = INTR_TRIGGER_EDGE;
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2016-04-20 14:36:45 +00:00
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val = MTK_READ_4(sc, GPIO_PIORENA);
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2016-04-07 15:11:24 +00:00
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if (val & mask)
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sc->pins[pin].intr_polarity = INTR_POLARITY_HIGH;
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else
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sc->pins[pin].intr_polarity = INTR_POLARITY_LOW;
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}
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2016-04-20 14:36:45 +00:00
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val = MTK_READ_4(sc, GPIO_PIODIR);
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2016-04-07 15:11:24 +00:00
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if (val & mask)
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sc->pins[pin].pin_flags |= GPIO_PIN_OUTPUT;
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else
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sc->pins[pin].pin_flags |= GPIO_PIN_INPUT;
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2016-04-20 14:36:45 +00:00
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val = MTK_READ_4(sc, GPIO_PIOPOL);
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2016-04-07 15:11:24 +00:00
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if (val & mask) {
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if (sc->pins[pin].pin_flags & GPIO_PIN_INPUT) {
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sc->pins[pin].pin_flags |= GPIO_PIN_INVIN;
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} else {
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sc->pins[pin].pin_flags |= GPIO_PIN_INVOUT;
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}
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}
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}
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static int
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mtk_gpio_attach(device_t dev)
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{
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struct mtk_gpio_softc *sc;
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phandle_t node;
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uint32_t i, num_pins;
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sc = device_get_softc(dev);
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sc->dev = dev;
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if (bus_alloc_resources(dev, mtk_gpio_spec, sc->res)) {
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device_printf(dev, "could not allocate resources for device\n");
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return (ENXIO);
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}
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MTK_GPIO_LOCK_INIT(sc);
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node = ofw_bus_get_node(dev);
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if (OF_hasprop(node, "clocks"))
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mtk_soc_start_clock(dev);
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if (OF_hasprop(node, "resets"))
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mtk_soc_reset_device(dev);
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2016-04-20 14:36:45 +00:00
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if (OF_getprop(node, "ralink,register-map", sc->regs,
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GPIO_PIOMAX) <= 0) {
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device_printf(dev, "Failed to read register map\n");
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return (ENXIO);
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2016-04-07 15:11:24 +00:00
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}
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2016-04-15 15:24:42 +00:00
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if (OF_hasprop(node, "ralink,num-gpios") && (OF_getencprop(node,
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"ralink,num-gpios", &num_pins, sizeof(num_pins)) >= 0))
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2016-04-07 15:11:24 +00:00
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sc->num_pins = num_pins;
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else
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sc->num_pins = MTK_GPIO_PINS;
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2016-05-06 05:22:25 +00:00
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for (i = 0; i < sc->num_pins; i++) {
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2016-04-07 15:11:24 +00:00
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sc->pins[i].pin_caps |= GPIO_PIN_INPUT | GPIO_PIN_OUTPUT |
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2017-05-06 06:22:14 +00:00
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GPIO_PIN_INVIN | GPIO_PIN_INVOUT |
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GPIO_INTR_EDGE_RISING | GPIO_INTR_EDGE_FALLING;
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2016-04-07 15:11:24 +00:00
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sc->pins[i].intr_polarity = INTR_POLARITY_HIGH;
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sc->pins[i].intr_trigger = INTR_TRIGGER_EDGE;
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snprintf(sc->pins[i].pin_name, GPIOMAXNAME - 1, "gpio%c%d",
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device_get_unit(dev) + 'a', i);
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sc->pins[i].pin_name[GPIOMAXNAME - 1] = '\0';
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mtk_gpio_pin_probe(sc, i);
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}
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if (mtk_pic_register_isrcs(sc) != 0) {
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device_printf(dev, "could not register PIC ISRCs\n");
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goto fail;
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}
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2016-05-18 15:05:44 +00:00
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if (intr_pic_register(dev, OF_xref_from_node(node)) == NULL) {
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2016-04-07 15:11:24 +00:00
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device_printf(dev, "could not register PIC\n");
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goto fail;
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}
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if (bus_setup_intr(dev, sc->res[1], INTR_TYPE_MISC | INTR_MPSAFE,
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mtk_gpio_intr, NULL, sc, &sc->intrhand) != 0)
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goto fail_pic;
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sc->busdev = gpiobus_attach_bus(dev);
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if (sc->busdev == NULL)
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goto fail_pic;
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return (0);
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fail_pic:
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intr_pic_deregister(dev, OF_xref_from_node(node));
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fail:
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if(sc->intrhand != NULL)
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bus_teardown_intr(dev, sc->res[1], sc->intrhand);
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bus_release_resources(dev, mtk_gpio_spec, sc->res);
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MTK_GPIO_LOCK_DESTROY(sc);
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return (ENXIO);
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}
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static int
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mtk_gpio_detach(device_t dev)
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{
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struct mtk_gpio_softc *sc = device_get_softc(dev);
|
|
|
|
phandle_t node;
|
|
|
|
|
|
|
|
node = ofw_bus_get_node(dev);
|
|
|
|
intr_pic_deregister(dev, OF_xref_from_node(node));
|
|
|
|
if (sc->intrhand != NULL)
|
|
|
|
bus_teardown_intr(dev, sc->res[1], sc->intrhand);
|
|
|
|
bus_release_resources(dev, mtk_gpio_spec, sc->res);
|
|
|
|
MTK_GPIO_LOCK_DESTROY(sc);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static device_t
|
|
|
|
mtk_gpio_get_bus(device_t dev)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
return (sc->busdev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pin_max(device_t dev, int *maxpin)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
*maxpin = sc->num_pins - 1;
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
if (pin >= sc->num_pins)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
MTK_GPIO_LOCK(sc);
|
|
|
|
*caps = sc->pins[pin].pin_caps;
|
|
|
|
MTK_GPIO_UNLOCK(sc);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
if (pin >= sc->num_pins)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
MTK_GPIO_LOCK(sc);
|
|
|
|
*flags = sc->pins[pin].pin_flags;
|
|
|
|
MTK_GPIO_UNLOCK(sc);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pin_getname(device_t dev, uint32_t pin, char *name)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
if (pin >= sc->num_pins)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
strncpy(name, sc->pins[pin].pin_name, GPIOMAXNAME - 1);
|
|
|
|
name[GPIOMAXNAME - 1] = '\0';
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
int retval;
|
|
|
|
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
if (pin >= sc->num_pins)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
MTK_GPIO_LOCK(sc);
|
|
|
|
retval = mtk_gpio_pin_set_direction(sc, pin,
|
|
|
|
flags & (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT));
|
|
|
|
if (retval == 0)
|
|
|
|
retval = mtk_gpio_pin_set_invert(sc, pin,
|
|
|
|
flags & (GPIO_PIN_INVIN | GPIO_PIN_INVOUT));
|
|
|
|
MTK_GPIO_UNLOCK(sc);
|
|
|
|
|
|
|
|
return (retval);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value)
|
|
|
|
{
|
2016-04-08 15:28:12 +00:00
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
ret = 0;
|
2016-04-07 15:11:24 +00:00
|
|
|
|
2016-04-08 15:28:12 +00:00
|
|
|
if (pin >= sc->num_pins)
|
2016-04-07 15:11:24 +00:00
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
MTK_GPIO_LOCK(sc);
|
|
|
|
if (value)
|
2016-04-20 14:36:45 +00:00
|
|
|
MTK_WRITE_4(sc, GPIO_PIOSET, (1u << pin));
|
2016-04-07 15:11:24 +00:00
|
|
|
else
|
2016-04-20 14:36:45 +00:00
|
|
|
MTK_WRITE_4(sc, GPIO_PIORESET, (1u << pin));
|
2016-04-08 15:28:12 +00:00
|
|
|
MTK_GPIO_UNLOCK(sc);
|
2016-05-06 05:22:25 +00:00
|
|
|
|
2016-04-08 15:28:12 +00:00
|
|
|
return (ret);
|
2016-04-07 15:11:24 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
uint32_t data;
|
2016-04-08 15:28:12 +00:00
|
|
|
int ret;
|
2016-04-07 15:11:24 +00:00
|
|
|
|
|
|
|
sc = device_get_softc(dev);
|
2016-04-08 15:28:12 +00:00
|
|
|
ret = 0;
|
2016-04-07 15:11:24 +00:00
|
|
|
|
2016-04-08 15:28:12 +00:00
|
|
|
if (pin >= sc->num_pins)
|
2016-04-07 15:11:24 +00:00
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
MTK_GPIO_LOCK(sc);
|
2016-04-20 14:36:45 +00:00
|
|
|
data = MTK_READ_4(sc, GPIO_PIODATA);
|
2016-04-07 15:11:24 +00:00
|
|
|
*val = (data & (1u << pin)) ? 1 : 0;
|
2016-04-08 15:28:12 +00:00
|
|
|
MTK_GPIO_UNLOCK(sc);
|
2016-05-06 05:22:25 +00:00
|
|
|
|
2016-04-08 15:28:12 +00:00
|
|
|
return (ret);
|
2016-04-07 15:11:24 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pin_toggle(device_t dev, uint32_t pin)
|
|
|
|
{
|
2016-04-08 15:28:12 +00:00
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
int ret;
|
2016-04-07 15:11:24 +00:00
|
|
|
|
2016-04-08 15:28:12 +00:00
|
|
|
sc = device_get_softc(dev);
|
|
|
|
ret = 0;
|
|
|
|
|
2016-05-06 05:22:25 +00:00
|
|
|
if (pin >= sc->num_pins)
|
|
|
|
return (EINVAL);
|
|
|
|
|
2016-04-07 15:11:24 +00:00
|
|
|
MTK_GPIO_LOCK(sc);
|
2016-04-08 15:28:12 +00:00
|
|
|
if (!(sc->pins[pin].pin_flags & GPIO_PIN_OUTPUT)) {
|
|
|
|
ret = EINVAL;
|
|
|
|
goto out;
|
|
|
|
}
|
2016-04-20 14:36:45 +00:00
|
|
|
MTK_WRITE_4(sc, GPIO_PIOTOG, (1u << pin));
|
2016-04-08 15:28:12 +00:00
|
|
|
|
|
|
|
out:
|
2016-04-07 15:11:24 +00:00
|
|
|
MTK_GPIO_UNLOCK(sc);
|
|
|
|
|
2016-04-08 15:28:12 +00:00
|
|
|
return (ret);
|
2016-04-07 15:11:24 +00:00
|
|
|
}
|
|
|
|
|
2017-05-06 06:22:14 +00:00
|
|
|
static int
|
|
|
|
mtk_gpio_pic_map_fdt(struct mtk_gpio_softc *sc,
|
|
|
|
struct intr_map_data_fdt *daf, u_int *irqp, uint32_t *modep)
|
|
|
|
{
|
|
|
|
u_int irq;
|
|
|
|
|
|
|
|
if (daf->ncells != 1) {
|
|
|
|
device_printf(sc->dev, "Invalid #interrupt-cells\n");
|
|
|
|
return (EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
irq = daf->cells[0];
|
|
|
|
|
|
|
|
if (irq >= sc->num_pins) {
|
|
|
|
device_printf(sc->dev, "Invalid interrupt number %u\n", irq);
|
|
|
|
return (EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
*irqp = irq;
|
|
|
|
if (modep != NULL)
|
|
|
|
*modep = GPIO_INTR_EDGE_BOTH;
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mtk_gpio_pic_map_gpio(struct mtk_gpio_softc *sc,
|
|
|
|
struct intr_map_data_gpio *dag, u_int *irqp, uint32_t *modep)
|
|
|
|
{
|
|
|
|
u_int irq;
|
|
|
|
|
|
|
|
irq = dag->gpio_pin_num;
|
|
|
|
if (irq >= sc->num_pins) {
|
|
|
|
device_printf(sc->dev, "Invalid interrupt number %u\n", irq);
|
|
|
|
return (EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
*irqp = irq;
|
|
|
|
if (modep != NULL)
|
|
|
|
*modep = dag->gpio_intr_mode;
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2016-04-07 15:11:24 +00:00
|
|
|
static int
|
|
|
|
mtk_gpio_pic_map_intr(device_t dev, struct intr_map_data *data,
|
|
|
|
struct intr_irqsrc **isrcp)
|
|
|
|
{
|
2017-05-06 06:22:14 +00:00
|
|
|
int error;
|
|
|
|
u_int irq;
|
2016-04-07 15:11:24 +00:00
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
|
|
|
|
sc = device_get_softc(dev);
|
2017-05-06 06:22:14 +00:00
|
|
|
switch (data->type) {
|
|
|
|
case INTR_MAP_DATA_FDT:
|
|
|
|
error = (mtk_gpio_pic_map_fdt(sc,
|
|
|
|
(struct intr_map_data_fdt *)data, &irq, NULL));
|
|
|
|
break;
|
|
|
|
case INTR_MAP_DATA_GPIO:
|
|
|
|
error = (mtk_gpio_pic_map_gpio(sc,
|
|
|
|
(struct intr_map_data_gpio *)data, &irq, NULL));
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error = EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
2016-04-07 15:11:24 +00:00
|
|
|
|
2017-05-06 06:22:14 +00:00
|
|
|
if (error != 0) {
|
|
|
|
device_printf(dev, "Invalid map type\n");
|
|
|
|
return (error);
|
|
|
|
}
|
2016-04-07 15:11:24 +00:00
|
|
|
|
2017-05-06 06:22:14 +00:00
|
|
|
*isrcp = PIC_INTR_ISRC(sc, irq);
|
2016-04-07 15:11:24 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
mtk_gpio_pic_enable_intr(device_t dev, struct intr_irqsrc *isrc)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
struct mtk_gpio_pin_irqsrc *pisrc;
|
|
|
|
uint32_t pin, mask, val;
|
|
|
|
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
pisrc = (struct mtk_gpio_pin_irqsrc *)isrc;
|
|
|
|
pin = pisrc->irq;
|
|
|
|
mask = 1u << pin;
|
|
|
|
|
|
|
|
MTK_GPIO_LOCK(sc);
|
|
|
|
|
|
|
|
if (sc->pins[pin].intr_polarity == INTR_POLARITY_LOW) {
|
2016-04-20 14:36:45 +00:00
|
|
|
val = MTK_READ_4(sc, GPIO_PIORENA) & ~mask;
|
|
|
|
MTK_WRITE_4(sc, GPIO_PIORENA, val);
|
|
|
|
val = MTK_READ_4(sc, GPIO_PIOFENA) | mask;
|
|
|
|
MTK_WRITE_4(sc, GPIO_PIOFENA, val);
|
2016-04-07 15:11:24 +00:00
|
|
|
} else {
|
2016-04-20 14:36:45 +00:00
|
|
|
val = MTK_READ_4(sc, GPIO_PIOFENA) & ~mask;
|
|
|
|
MTK_WRITE_4(sc, GPIO_PIOFENA, val);
|
|
|
|
val = MTK_READ_4(sc, GPIO_PIORENA) | mask;
|
|
|
|
MTK_WRITE_4(sc, GPIO_PIORENA, val);
|
2016-04-07 15:11:24 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
MTK_GPIO_UNLOCK(sc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
mtk_gpio_pic_disable_intr(device_t dev, struct intr_irqsrc *isrc)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
struct mtk_gpio_pin_irqsrc *pisrc;
|
|
|
|
uint32_t pin, mask, val;
|
|
|
|
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
pisrc = (struct mtk_gpio_pin_irqsrc *)isrc;
|
|
|
|
pin = pisrc->irq;
|
|
|
|
mask = 1u << pin;
|
|
|
|
|
|
|
|
MTK_GPIO_LOCK(sc);
|
|
|
|
|
2016-04-20 14:36:45 +00:00
|
|
|
val = MTK_READ_4(sc, GPIO_PIORENA) & ~mask;
|
|
|
|
MTK_WRITE_4(sc, GPIO_PIORENA, val);
|
|
|
|
val = MTK_READ_4(sc, GPIO_PIOFENA) & ~mask;
|
|
|
|
MTK_WRITE_4(sc, GPIO_PIOFENA, val);
|
2016-04-07 15:11:24 +00:00
|
|
|
|
|
|
|
MTK_GPIO_UNLOCK(sc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
mtk_gpio_pic_pre_ithread(device_t dev, struct intr_irqsrc *isrc)
|
|
|
|
{
|
|
|
|
|
|
|
|
mtk_gpio_pic_disable_intr(dev, isrc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
mtk_gpio_pic_post_ithread(device_t dev, struct intr_irqsrc *isrc)
|
|
|
|
{
|
|
|
|
|
|
|
|
mtk_gpio_pic_enable_intr(dev, isrc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
mtk_gpio_pic_post_filter(device_t dev, struct intr_irqsrc *isrc)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
struct mtk_gpio_pin_irqsrc *pisrc;
|
|
|
|
|
|
|
|
pisrc = (struct mtk_gpio_pin_irqsrc *)isrc;
|
|
|
|
sc = device_get_softc(dev);
|
2016-04-08 15:28:12 +00:00
|
|
|
MTK_GPIO_LOCK(sc);
|
2016-04-20 14:36:45 +00:00
|
|
|
MTK_WRITE_4(sc, GPIO_PIOINT, 1u << pisrc->irq);
|
2016-04-08 15:28:12 +00:00
|
|
|
MTK_GPIO_UNLOCK(sc);
|
2016-04-07 15:11:24 +00:00
|
|
|
}
|
|
|
|
|
2017-05-06 06:22:14 +00:00
|
|
|
static int
|
|
|
|
mtk_gpio_pic_setup_intr(device_t dev, struct intr_irqsrc *isrc,
|
|
|
|
struct resource *res, struct intr_map_data *data)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
uint32_t val;
|
|
|
|
int error;
|
|
|
|
uint32_t mode;
|
|
|
|
u_int irq;
|
|
|
|
|
|
|
|
if (data == NULL)
|
|
|
|
return (ENOTSUP);
|
|
|
|
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
|
|
|
|
switch (data->type) {
|
|
|
|
case INTR_MAP_DATA_FDT:
|
|
|
|
error = mtk_gpio_pic_map_fdt(sc,
|
|
|
|
(struct intr_map_data_fdt *)data, &irq, &mode);
|
|
|
|
break;
|
|
|
|
case INTR_MAP_DATA_GPIO:
|
|
|
|
error = mtk_gpio_pic_map_gpio(sc,
|
|
|
|
(struct intr_map_data_gpio *)data, &irq, &mode);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error = ENOTSUP;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (error != 0)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
MTK_GPIO_LOCK(sc);
|
|
|
|
if (mode == GPIO_INTR_EDGE_BOTH || mode == GPIO_INTR_EDGE_RISING) {
|
|
|
|
val = MTK_READ_4(sc, GPIO_PIORENA) | (1u << irq);
|
|
|
|
MTK_WRITE_4(sc, GPIO_PIORENA, val);
|
|
|
|
}
|
|
|
|
if (mode == GPIO_INTR_EDGE_BOTH || mode == GPIO_INTR_EDGE_FALLING) {
|
|
|
|
val = MTK_READ_4(sc, GPIO_PIOFENA) | (1u << irq);
|
|
|
|
MTK_WRITE_4(sc, GPIO_PIOFENA, val);
|
|
|
|
}
|
|
|
|
MTK_GPIO_UNLOCK(sc);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2016-04-07 15:11:24 +00:00
|
|
|
static int
|
|
|
|
mtk_gpio_intr(void *arg)
|
|
|
|
{
|
|
|
|
struct mtk_gpio_softc *sc;
|
|
|
|
uint32_t i, interrupts;
|
|
|
|
|
|
|
|
sc = arg;
|
2016-04-20 14:36:45 +00:00
|
|
|
interrupts = MTK_READ_4(sc, GPIO_PIOINT);
|
2017-05-06 06:22:14 +00:00
|
|
|
MTK_WRITE_4(sc, GPIO_PIOINT, interrupts);
|
2016-04-07 15:11:24 +00:00
|
|
|
|
|
|
|
for (i = 0; interrupts != 0; i++, interrupts >>= 1) {
|
|
|
|
if ((interrupts & 0x1) == 0)
|
|
|
|
continue;
|
|
|
|
if (intr_isrc_dispatch(PIC_INTR_ISRC(sc, i),
|
|
|
|
curthread->td_intr_frame) != 0) {
|
|
|
|
device_printf(sc->dev, "spurious interrupt %d\n", i);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (FILTER_HANDLED);
|
|
|
|
}
|
|
|
|
|
|
|
|
static phandle_t
|
|
|
|
mtk_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 mtk_gpio_methods[] = {
|
|
|
|
/* Device interface */
|
|
|
|
DEVMETHOD(device_probe, mtk_gpio_probe),
|
|
|
|
DEVMETHOD(device_attach, mtk_gpio_attach),
|
|
|
|
DEVMETHOD(device_detach, mtk_gpio_detach),
|
|
|
|
|
|
|
|
/* GPIO protocol */
|
|
|
|
DEVMETHOD(gpio_get_bus, mtk_gpio_get_bus),
|
|
|
|
DEVMETHOD(gpio_pin_max, mtk_gpio_pin_max),
|
|
|
|
DEVMETHOD(gpio_pin_getname, mtk_gpio_pin_getname),
|
|
|
|
DEVMETHOD(gpio_pin_getflags, mtk_gpio_pin_getflags),
|
|
|
|
DEVMETHOD(gpio_pin_getcaps, mtk_gpio_pin_getcaps),
|
|
|
|
DEVMETHOD(gpio_pin_setflags, mtk_gpio_pin_setflags),
|
|
|
|
DEVMETHOD(gpio_pin_get, mtk_gpio_pin_get),
|
|
|
|
DEVMETHOD(gpio_pin_set, mtk_gpio_pin_set),
|
|
|
|
DEVMETHOD(gpio_pin_toggle, mtk_gpio_pin_toggle),
|
|
|
|
|
|
|
|
/* Interrupt controller interface */
|
|
|
|
DEVMETHOD(pic_disable_intr, mtk_gpio_pic_disable_intr),
|
|
|
|
DEVMETHOD(pic_enable_intr, mtk_gpio_pic_enable_intr),
|
|
|
|
DEVMETHOD(pic_map_intr, mtk_gpio_pic_map_intr),
|
2017-05-06 06:22:14 +00:00
|
|
|
DEVMETHOD(pic_setup_intr, mtk_gpio_pic_setup_intr),
|
2016-04-07 15:11:24 +00:00
|
|
|
DEVMETHOD(pic_post_filter, mtk_gpio_pic_post_filter),
|
|
|
|
DEVMETHOD(pic_post_ithread, mtk_gpio_pic_post_ithread),
|
|
|
|
DEVMETHOD(pic_pre_ithread, mtk_gpio_pic_pre_ithread),
|
|
|
|
|
|
|
|
/* ofw_bus interface */
|
|
|
|
DEVMETHOD(ofw_bus_get_node, mtk_gpio_get_node),
|
|
|
|
|
|
|
|
DEVMETHOD_END
|
|
|
|
};
|
|
|
|
|
|
|
|
static driver_t mtk_gpio_driver = {
|
|
|
|
"gpio",
|
|
|
|
mtk_gpio_methods,
|
|
|
|
sizeof(struct mtk_gpio_softc),
|
|
|
|
};
|
|
|
|
|
|
|
|
static devclass_t mtk_gpio_devclass;
|
|
|
|
|
|
|
|
EARLY_DRIVER_MODULE(mtk_gpio_v1, simplebus, mtk_gpio_driver,
|
|
|
|
mtk_gpio_devclass, 0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LATE);
|