Current Path : /sys/mips/rt305x/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/mips/rt305x/rt305x_gpio.c |
/*- * Copyright (c) 2010-2011, Aleksandr Rybalko <ray@ddteam.net> * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org> * Copyright (c) 2009, Luiz Otavio O Souza. * All rights reserved. * * 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 unmodified, 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. */ /* * GPIO driver for RT305X SoC. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/mips/rt305x/rt305x_gpio.c 220297 2011-04-03 14:39:55Z adrian $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/rman.h> #include <sys/lock.h> #include <sys/mutex.h> #include <sys/gpio.h> #include <machine/bus.h> #include <machine/resource.h> #include <mips/rt305x/rt305xreg.h> #include <mips/rt305x/rt305x_gpio.h> #include <mips/rt305x/rt305x_gpiovar.h> #include <mips/rt305x/rt305x_sysctlvar.h> #include "gpio_if.h" #ifdef notyet #define DEFAULT_CAPS (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | GPIO_PIN_INVIN | \ GPIO_PIN_INVOUT | GPIO_PIN_REPORT ) #else #define DEFAULT_CAPS (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | GPIO_PIN_INVIN | \ GPIO_PIN_INVOUT ) #endif /* * Helpers */ static void rt305x_gpio_pin_configure(struct rt305x_gpio_softc *sc, struct gpio_pin *pin, uint32_t flags); /* * Driver stuff */ static int rt305x_gpio_probe(device_t dev); static int rt305x_gpio_attach(device_t dev); static int rt305x_gpio_detach(device_t dev); static int rt305x_gpio_intr(void *arg); int rt305x_get_int_mask (device_t); void rt305x_set_int_mask (device_t, uint32_t); int rt305x_get_int_status(device_t); void rt305x_set_int_status(device_t, uint32_t); /* * GPIO interface */ static int rt305x_gpio_pin_max(device_t dev, int *maxpin); static int rt305x_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps); static int rt305x_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags); static int rt305x_gpio_pin_getname(device_t dev, uint32_t pin, char *name); static int rt305x_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags); static int rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value); static int rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val); static int rt305x_gpio_pin_toggle(device_t dev, uint32_t pin); static void rt305x_gpio_pin_configure(struct rt305x_gpio_softc *sc, struct gpio_pin *pin, unsigned int flags) { GPIO_LOCK(sc); /* * Manage input/output */ if (flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) { pin->gp_flags &= ~(GPIO_PIN_INPUT|GPIO_PIN_OUTPUT); if (flags & GPIO_PIN_OUTPUT) { pin->gp_flags |= GPIO_PIN_OUTPUT; GPIO_BIT_SET(sc, pin->gp_pin, DIR); } else { pin->gp_flags |= GPIO_PIN_INPUT; GPIO_BIT_CLR(sc, pin->gp_pin, DIR); } } if (flags & GPIO_PIN_INVOUT) { pin->gp_flags |= GPIO_PIN_INVOUT; GPIO_BIT_SET(sc, pin->gp_pin, POL); } else { pin->gp_flags &= ~GPIO_PIN_INVOUT; GPIO_BIT_CLR(sc, pin->gp_pin, POL); } if (flags & GPIO_PIN_INVIN) { pin->gp_flags |= GPIO_PIN_INVIN; GPIO_BIT_SET(sc, pin->gp_pin, POL); } else { pin->gp_flags &= ~GPIO_PIN_INVIN; GPIO_BIT_CLR(sc, pin->gp_pin, POL); } #ifdef notyet /* Enable interrupt bits for rising/falling transitions */ if (flags & GPIO_PIN_REPORT) { pin->gp_flags |= GPIO_PIN_REPORT; GPIO_BIT_SET(sc, pin->gp_pin, RENA); GPIO_BIT_SET(sc, pin->gp_pin, FENA); device_printf(sc->dev, "Will report interrupt on pin %d\n", pin->gp_pin); } else { pin->gp_flags &= ~GPIO_PIN_REPORT; GPIO_BIT_CLR(sc, pin->gp_pin, RENA); GPIO_BIT_CLR(sc, pin->gp_pin, FENA); } #else /* Disable generating interrupts for now */ GPIO_BIT_CLR(sc, pin->gp_pin, RENA); GPIO_BIT_CLR(sc, pin->gp_pin, FENA); #endif GPIO_UNLOCK(sc); } static int rt305x_gpio_pin_max(device_t dev, int *maxpin) { *maxpin = NGPIO - 1; return (0); } static int rt305x_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps) { struct rt305x_gpio_softc *sc = device_get_softc(dev); int i; for (i = 0; i < sc->gpio_npins; i++) { if (sc->gpio_pins[i].gp_pin == pin) break; } if (i >= sc->gpio_npins) return (EINVAL); GPIO_LOCK(sc); *caps = sc->gpio_pins[i].gp_caps; GPIO_UNLOCK(sc); return (0); } static int rt305x_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags) { struct rt305x_gpio_softc *sc = device_get_softc(dev); int i; for (i = 0; i < sc->gpio_npins; i++) { if (sc->gpio_pins[i].gp_pin == pin) break; } if (i >= sc->gpio_npins) return (EINVAL); GPIO_LOCK(sc); *flags = sc->gpio_pins[i].gp_flags; GPIO_UNLOCK(sc); return (0); } static int rt305x_gpio_pin_getname(device_t dev, uint32_t pin, char *name) { struct rt305x_gpio_softc *sc = device_get_softc(dev); int i; for (i = 0; i < sc->gpio_npins; i++) { if (sc->gpio_pins[i].gp_pin == pin) break; } if (i >= sc->gpio_npins) return (EINVAL); GPIO_LOCK(sc); memcpy(name, sc->gpio_pins[i].gp_name, GPIOMAXNAME); GPIO_UNLOCK(sc); return (0); } static int rt305x_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags) { int i; struct rt305x_gpio_softc *sc = device_get_softc(dev); for (i = 0; i < sc->gpio_npins; i++) { if (sc->gpio_pins[i].gp_pin == pin) break; } if (i >= sc->gpio_npins) return (EINVAL); /* Filter out unwanted flags */ if ((flags &= sc->gpio_pins[i].gp_caps) != flags) return (EINVAL); /* Can't mix input/output together */ if ((flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) == (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) return (EINVAL); rt305x_gpio_pin_configure(sc, &sc->gpio_pins[i], flags); return (0); } static int rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value) { struct rt305x_gpio_softc *sc = device_get_softc(dev); int i; for (i = 0; i < sc->gpio_npins; i++) { if (sc->gpio_pins[i].gp_pin == pin) break; } if (i >= sc->gpio_npins) return (EINVAL); GPIO_LOCK(sc); if (value) GPIO_BIT_SET(sc, i, DATA); else GPIO_BIT_CLR(sc, i, DATA); GPIO_UNLOCK(sc); return (0); } static int rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val) { struct rt305x_gpio_softc *sc = device_get_softc(dev); int i; for (i = 0; i < sc->gpio_npins; i++) { if (sc->gpio_pins[i].gp_pin == pin) break; } if (i >= sc->gpio_npins) return (EINVAL); GPIO_LOCK(sc); *val = GPIO_BIT_GET(sc, i, DATA); GPIO_UNLOCK(sc); return (0); } static int rt305x_gpio_pin_toggle(device_t dev, uint32_t pin) { int i; struct rt305x_gpio_softc *sc = device_get_softc(dev); for (i = 0; i < sc->gpio_npins; i++) { if (sc->gpio_pins[i].gp_pin == pin) break; } if (i >= sc->gpio_npins) return (EINVAL); GPIO_LOCK(sc); GPIO_BIT_SET(sc, i, TOG); GPIO_UNLOCK(sc); return (0); } static int rt305x_gpio_intr(void *arg) { struct rt305x_gpio_softc *sc = arg; #ifdef notyet uint32_t i; #endif uint64_t input, value; #ifdef notyet uint64_t reset_pin; char notify[16]; char pinname[6]; #endif /* Read all reported pins */ input = GPIO_READ_ALL(sc, INT); /* Clear int status */ GPIO_WRITE_ALL(sc, INT, input); /* Clear report for OUTs */ input &= ~GPIO_READ_ALL(sc, DIR); value = input & GPIO_READ_ALL(sc, DATA); if (!input) goto intr_done; #ifdef notyet /* if reset_gpio and this pin is input */ if (sc->reset_gpio >= 0 && (input & (1 << sc->reset_gpio))) { /* get reset_gpio pin value */ reset_pin = (value & (1 << sc->reset_gpio))?1:0; if ( sc->reset_gpio_last != reset_pin ) { /* * if now reset is high, check how long * and do reset if less than 2 seconds */ if ( reset_pin && (time_uptime - sc->reset_gpio_ontime) < 2 ) shutdown_nice(0); sc->reset_gpio_last = reset_pin; sc->reset_gpio_ontime = time_uptime; } } for ( i = 0; i < NGPIO; i ++ ) { /* Next if output pin */ if ( !(( input >> i) & 1) ) continue; if ( (((value & input) >> i) & 1) != sc->gpio_pins[i].gp_last ) { /* !system=GPIO subsystem=pin7 type=PIN_HIGH period=3 */ snprintf(notify , sizeof(notify ), "period=%d", (uint32_t)time_uptime - sc->gpio_pins[i].gp_time); snprintf(pinname, sizeof(pinname), "pin%02d", i); devctl_notify("GPIO", pinname, (((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW", notify); printf("GPIO[%s] %s %s\n", pinname, (((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW", notify); sc->gpio_pins[i].gp_last = ((value & input) >> i) & 1; sc->gpio_pins[i].gp_time = time_uptime; } } #endif intr_done: return (FILTER_HANDLED); } static int rt305x_gpio_probe(device_t dev) { device_set_desc(dev, "RT305X GPIO driver"); return (0); } static uint64_t rt305x_gpio_init(device_t dev) { uint64_t avl = ~0ULL; uint32_t gmode = rt305x_sysctl_get(SYSCTL_GPIOMODE); if (!(gmode & SYSCTL_GPIOMODE_RGMII_GPIO_MODE)) avl &= ~RGMII_GPIO_MODE_MASK; if (!(gmode & SYSCTL_GPIOMODE_SDRAM_GPIO_MODE)) avl &= ~SDRAM_GPIO_MODE_MASK; if (!(gmode & SYSCTL_GPIOMODE_MDIO_GPIO_MODE)) avl &= ~MDIO_GPIO_MODE_MASK; if (!(gmode & SYSCTL_GPIOMODE_JTAG_GPIO_MODE)) avl &= ~JTAG_GPIO_MODE_MASK; if (!(gmode & SYSCTL_GPIOMODE_UARTL_GPIO_MODE)) avl &= ~UARTL_GPIO_MODE_MASK; if (!(gmode & SYSCTL_GPIOMODE_SPI_GPIO_MODE)) avl &= ~SPI_GPIO_MODE_MASK; if (!(gmode & SYSCTL_GPIOMODE_I2C_GPIO_MODE)) avl &= ~I2C_GPIO_MODE_MASK; if ((gmode & SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO) != SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO) avl &= ~I2C_GPIO_MODE_MASK; /* D-Link DAP-1350 Board have * MDIO_GPIO_MODE * UARTF_GPIO_MODE * SPI_GPIO_MODE * I2C_GPIO_MODE * So we have * 00000001 10000000 01111111 11111110 */ return (avl); } #define DAP1350_RESET_GPIO 10 static int rt305x_gpio_attach(device_t dev) { struct rt305x_gpio_softc *sc = device_get_softc(dev); int error = 0, i; uint64_t avlpins = 0; sc->reset_gpio = DAP1350_RESET_GPIO; KASSERT((device_get_unit(dev) == 0), ("rt305x_gpio_gpio: Only one gpio module supported")); mtx_init(&sc->gpio_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, MTX_DEF); /* Map control/status registers. */ sc->gpio_mem_rid = 0; sc->gpio_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->gpio_mem_rid, RF_ACTIVE); if (sc->gpio_mem_res == NULL) { device_printf(dev, "couldn't map memory\n"); error = ENXIO; rt305x_gpio_detach(dev); return(error); } if ((sc->gpio_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->gpio_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { device_printf(dev, "unable to allocate IRQ resource\n"); return (ENXIO); } if ((bus_setup_intr(dev, sc->gpio_irq_res, INTR_TYPE_MISC, /* rt305x_gpio_filter, */ rt305x_gpio_intr, NULL, sc, &sc->gpio_ih))) { device_printf(dev, "WARNING: unable to register interrupt handler\n"); return (ENXIO); } sc->dev = dev; avlpins = rt305x_gpio_init(dev); /* Configure all pins as input */ /* disable interrupts for all pins */ /* TODO */ sc->gpio_npins = NGPIO; resource_int_value(device_get_name(dev), device_get_unit(dev), "pins", &sc->gpio_npins); for (i = 0; i < sc->gpio_npins; i++) { sc->gpio_pins[i].gp_pin = i; sc->gpio_pins[i].gp_caps = DEFAULT_CAPS; sc->gpio_pins[i].gp_flags = 0; } /* Setup reset pin interrupt */ if (TUNABLE_INT_FETCH("reset_gpio", &sc->reset_gpio)) { device_printf(dev, "\tHinted reset_gpio %d\n", sc->reset_gpio); } #ifdef notyet if (sc->reset_gpio != -1) { rt305x_gpio_pin_setflags(dev, sc->reset_gpio, GPIO_PIN_INPUT|GPIO_PIN_INVOUT| GPIO_PIN_INVOUT|GPIO_PIN_REPORT); device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio); } #else if (sc->reset_gpio != -1) { rt305x_gpio_pin_setflags(dev, sc->reset_gpio, GPIO_PIN_INPUT|GPIO_PIN_INVOUT); device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio); } #endif device_add_child(dev, "gpioc", device_get_unit(dev)); device_add_child(dev, "gpiobus", device_get_unit(dev)); return (bus_generic_attach(dev)); } static int rt305x_gpio_detach(device_t dev) { struct rt305x_gpio_softc *sc = device_get_softc(dev); KASSERT(mtx_initialized(&sc->gpio_mtx), ("gpio mutex not initialized")); bus_generic_detach(dev); if (sc->gpio_mem_res) bus_release_resource(dev, SYS_RES_MEMORY, sc->gpio_mem_rid, sc->gpio_mem_res); mtx_destroy(&sc->gpio_mtx); return(0); } #ifdef notyet static struct resource * rt305x_gpio_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { struct obio_softc *sc = device_get_softc(bus); struct resource *rv; struct rman *rm; switch (type) { case SYS_RES_GPIO: rm = &sc->gpio_rman; break; default: printf("%s: unknown resource type %d\n", __func__, type); return (0); } rv = rman_reserve_resource(rm, start, end, count, flags, child); if (rv == 0) { printf("%s: could not reserve resource\n", __func__); return (0); } rman_set_rid(rv, *rid); return (rv); } static int rt305x_gpio_activate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { return (rman_activate_resource(r)); } static int rt305x_gpio_deactivate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { return (rman_deactivate_resource(r)); } static int rt305x_gpio_release_resource(device_t dev, device_t child, int type, int rid, struct resource *r) { rman_release_resource(r); return (0); } #endif static device_method_t rt305x_gpio_methods[] = { DEVMETHOD(device_probe, rt305x_gpio_probe), DEVMETHOD(device_attach, rt305x_gpio_attach), DEVMETHOD(device_detach, rt305x_gpio_detach), /* GPIO protocol */ DEVMETHOD(gpio_pin_max, rt305x_gpio_pin_max), DEVMETHOD(gpio_pin_getname, rt305x_gpio_pin_getname), DEVMETHOD(gpio_pin_getflags, rt305x_gpio_pin_getflags), DEVMETHOD(gpio_pin_getcaps, rt305x_gpio_pin_getcaps), DEVMETHOD(gpio_pin_setflags, rt305x_gpio_pin_setflags), DEVMETHOD(gpio_pin_get, rt305x_gpio_pin_get), DEVMETHOD(gpio_pin_set, rt305x_gpio_pin_set), DEVMETHOD(gpio_pin_toggle, rt305x_gpio_pin_toggle), {0, 0}, }; static driver_t rt305x_gpio_driver = { "gpio", rt305x_gpio_methods, sizeof(struct rt305x_gpio_softc), }; static devclass_t rt305x_gpio_devclass; DRIVER_MODULE(rt305x_gpio, obio, rt305x_gpio_driver, rt305x_gpio_devclass, 0, 0);