Add support for DWC OTG.
This commit is contained in:
Hans Petter Selasky
parent
9cfd07315e
commit
dabf69b257
211
sys/arm/broadcom/bcm2835/dwc_otg_brcm.c
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211
sys/arm/broadcom/bcm2835/dwc_otg_brcm.c
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/*-
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* Copyright (c) 2012 Hans Petter Selasky. 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 <sys/stdint.h>
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#include <sys/stddef.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.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/condvar.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <sys/unistd.h>
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/priv.h>
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#include <sys/rman.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.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 <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usb_core.h>
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#include <dev/usb/usb_busdma.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/usb_util.h>
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#include <dev/usb/usb_controller.h>
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#include <dev/usb/usb_bus.h>
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#include <dev/usb/controller/dwc_otg.h>
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static device_probe_t dwc_otg_probe;
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static device_attach_t dwc_otg_attach;
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static device_detach_t dwc_otg_detach;
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struct dwc_otg_super_softc {
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struct dwc_otg_softc sc_otg; /* must be first */
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};
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static int
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dwc_otg_probe(device_t dev)
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{
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if (!ofw_bus_is_compatible(dev, "synopsys,designware-hs-otg2"))
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return (ENXIO);
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device_set_desc(dev, "DWC OTG 2.0 integrated USB controller");
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return (0);
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}
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static int
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dwc_otg_attach(device_t dev)
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{
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struct dwc_otg_super_softc *sc = device_get_softc(dev);
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int err;
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int rid;
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/* initialise some bus fields */
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sc->sc_otg.sc_bus.parent = dev;
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sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices;
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sc->sc_otg.sc_bus.devices_max = DWC_OTG_MAX_DEVICES;
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/* get all DMA memory */
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if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus,
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USB_GET_DMA_TAG(dev), NULL)) {
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return (ENOMEM);
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}
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rid = 0;
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sc->sc_otg.sc_io_res =
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bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
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if (!(sc->sc_otg.sc_io_res)) {
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err = ENOMEM;
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goto error;
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}
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sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res);
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rid = 0;
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sc->sc_otg.sc_irq_res =
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bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
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if (sc->sc_otg.sc_irq_res == NULL)
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goto error;
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sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1);
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if (sc->sc_otg.sc_bus.bdev == NULL)
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goto error;
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device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus);
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err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
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NULL, (driver_intr_t *)dwc_otg_interrupt, sc, &sc->sc_otg.sc_intr_hdl);
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if (err) {
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sc->sc_otg.sc_intr_hdl = NULL;
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goto error;
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}
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err = dwc_otg_init(&sc->sc_otg);
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if (err == 0) {
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err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev);
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}
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if (err)
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goto error;
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return (0);
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error:
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dwc_otg_detach(dev);
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return (ENXIO);
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}
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static int
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dwc_otg_detach(device_t dev)
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{
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struct dwc_otg_super_softc *sc = device_get_softc(dev);
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device_t bdev;
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int err;
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if (sc->sc_otg.sc_bus.bdev) {
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bdev = sc->sc_otg.sc_bus.bdev;
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device_detach(bdev);
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device_delete_child(dev, bdev);
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}
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/* during module unload there are lots of children leftover */
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device_delete_children(dev);
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if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) {
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/*
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* only call dwc_otg_uninit() after dwc_otg_init()
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*/
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dwc_otg_uninit(&sc->sc_otg);
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err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res,
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sc->sc_otg.sc_intr_hdl);
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sc->sc_otg.sc_intr_hdl = NULL;
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}
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/* free IRQ channel, if any */
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if (sc->sc_otg.sc_irq_res) {
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bus_release_resource(dev, SYS_RES_IRQ, 0,
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sc->sc_otg.sc_irq_res);
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sc->sc_otg.sc_irq_res = NULL;
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}
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/* free memory resource, if any */
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if (sc->sc_otg.sc_io_res) {
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bus_release_resource(dev, SYS_RES_MEMORY, 0,
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sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_res = NULL;
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}
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usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL);
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return (0);
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}
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static device_method_t dwc_otg_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, dwc_otg_probe),
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DEVMETHOD(device_attach, dwc_otg_attach),
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DEVMETHOD(device_detach, dwc_otg_detach),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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static driver_t dwc_otg_driver = {
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.name = "dwcotg",
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.methods = dwc_otg_methods,
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.size = sizeof(struct dwc_otg_super_softc),
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};
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static devclass_t dwc_otg_devclass;
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DRIVER_MODULE(dwcotg, simplebus, dwc_otg_driver, dwc_otg_devclass, 0, 0);
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MODULE_DEPEND(dwcotg, usb, 1, 1, 1);
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