/*- * Copyright (c) 2015, Alexander Kabaev * Copyright (c) 2009, Oleksandr Tymoshenko * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static int jz4780_ohci_attach(device_t dev); static int jz4780_ohci_detach(device_t dev); static int jz4780_ohci_probe(device_t dev); struct jz4780_ohci_softc { struct ohci_softc sc_ohci; struct gpiobus_pin *gpio_vbus; clk_t clk; }; static int jz4780_ohci_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (!ofw_bus_is_compatible(dev, "ingenic,jz4780-ohci")) return (ENXIO); device_set_desc(dev, "Ingenic JZ4780 OHCI"); return (BUS_PROBE_DEFAULT); } static int jz4780_ohci_vbus_gpio_enable(device_t dev, struct jz4780_ohci_softc *sc) { struct gpiobus_pin *gpio_vbus; int error; error = ofw_gpiobus_parse_gpios(dev, "ingenic,vbus-gpio", &gpio_vbus); /* * The pin can be mapped already by other device. Assume it also has need * activated and proceed happily. */ if (error <= 0) return (0); sc->gpio_vbus = gpio_vbus; if (error > 1) { device_printf(dev, "too many vbus gpios\n"); return (ENXIO); } if (sc->gpio_vbus != NULL) { error = GPIO_PIN_SET(sc->gpio_vbus->dev, sc->gpio_vbus->pin, 1); if (error != 0) { device_printf(dev, "Cannot configure GPIO pin %d on %s\n", sc->gpio_vbus->pin, device_get_nameunit(sc->gpio_vbus->dev)); return (error); } error = GPIO_PIN_SETFLAGS(sc->gpio_vbus->dev, sc->gpio_vbus->pin, GPIO_PIN_OUTPUT); if (error != 0) { device_printf(dev, "Cannot configure GPIO pin %d on %s\n", sc->gpio_vbus->pin, device_get_nameunit(sc->gpio_vbus->dev)); return (error); } } return (0); } static int jz4780_ohci_clk_enable(device_t dev) { struct jz4780_ohci_softc *sc; int err; sc = device_get_softc(dev); err = clk_get_by_ofw_index(dev, 0, 0, &sc->clk); if (err != 0) { device_printf(dev, "unable to lookup device clock\n"); return (err); } err = clk_enable(sc->clk); if (err != 0) { device_printf(dev, "unable to enable device clock\n"); return (err); } err = clk_set_freq(sc->clk, 48000000, 0); if (err != 0) { device_printf(dev, "unable to set device clock to 48 kHZ\n"); return (err); } return (0); } static int jz4780_ohci_attach(device_t dev) { struct jz4780_ohci_softc *sc = device_get_softc(dev); int err; int rid; /* initialize some bus fields */ sc->sc_ohci.sc_bus.parent = dev; sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices; sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES; sc->sc_ohci.sc_bus.dma_bits = 32; /* get all DMA memory */ if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus, USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) { return (ENOMEM); } sc->sc_ohci.sc_dev = dev; /* frob vbus gpio */ err = jz4780_ohci_vbus_gpio_enable(dev, sc); if (err) goto error; err = jz4780_ohci_clk_enable(dev); if (err) goto error; rid = 0; sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->sc_ohci.sc_io_res == NULL) { err = ENOMEM; goto error; } sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res); sc->sc_ohci.sc_io_hdl = rman_get_bushandle(sc->sc_ohci.sc_io_res); sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res); rid = 0; sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); if (sc->sc_ohci.sc_irq_res == NULL) { err = ENOMEM; goto error; } if (jz4780_ohci_enable() != 0) { device_printf(dev, "CGU failed to enable OHCI\n"); err = ENXIO; goto error; } sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1); if (sc->sc_ohci.sc_bus.bdev == NULL) { err = ENOMEM; goto error; } device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus); err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, NULL, (driver_intr_t *)ohci_interrupt, sc, &sc->sc_ohci.sc_intr_hdl); if (err) { err = ENXIO; goto error; } strlcpy(sc->sc_ohci.sc_vendor, "Ingenic", sizeof(sc->sc_ohci.sc_vendor)); bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, OHCI_CONTROL, 0); err = ohci_init(&sc->sc_ohci); if (!err) err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev); if (err) goto error; return (0); error: if (err) jz4780_ohci_detach(dev); return (err); } static int jz4780_ohci_detach(device_t dev) { struct jz4780_ohci_softc *sc = device_get_softc(dev); device_t bdev; if (sc->sc_ohci.sc_bus.bdev) { bdev = sc->sc_ohci.sc_bus.bdev; device_detach(bdev); device_delete_child(dev, bdev); } /* during module unload there are lots of children leftover */ device_delete_children(dev); /* * Put the controller into reset, then disable clocks and do * the MI tear down. We have to disable the clocks/hardware * after we do the rest of the teardown. We also disable the * clocks in the opposite order we acquire them, but that * doesn't seem to be absolutely necessary. We free up the * clocks after we disable them, so the system could, in * theory, reuse them. */ if (sc->sc_ohci.sc_io_res != NULL) { bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, OHCI_CONTROL, 0); } if (sc->sc_ohci.sc_intr_hdl) { bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res, sc->sc_ohci.sc_intr_hdl); sc->sc_ohci.sc_intr_hdl = NULL; } if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) { /* * only call ohci_detach() after ohci_init() */ ohci_detach(&sc->sc_ohci); bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_ohci.sc_irq_res); sc->sc_ohci.sc_irq_res = NULL; } if (sc->sc_ohci.sc_io_res) { bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_ohci.sc_io_res); sc->sc_ohci.sc_io_res = NULL; sc->sc_ohci.sc_io_tag = 0; sc->sc_ohci.sc_io_hdl = 0; } if (sc->clk != NULL) clk_release(sc->clk); usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc); free(sc->gpio_vbus, M_DEVBUF); return (0); } static device_method_t ohci_methods[] = { /* Device interface */ DEVMETHOD(device_probe, jz4780_ohci_probe), DEVMETHOD(device_attach, jz4780_ohci_attach), DEVMETHOD(device_detach, jz4780_ohci_detach), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; static driver_t ohci_driver = { .name = "ohci", .methods = ohci_methods, .size = sizeof(struct jz4780_ohci_softc), }; static devclass_t ohci_devclass; DRIVER_MODULE(ohci, simplebus, ohci_driver, ohci_devclass, 0, 0);