/* $NetBSD: zusb.c,v 1.1 2008/03/31 23:32:43 chris Exp $ */ /* * Copyright (c) 2008 Christopher Gilbert * All rights reserved. * * 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. * 3. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: zusb.c,v 1.1 2008/03/31 23:32:43 chris Exp $"); #include <sys/param.h> #include <sys/device.h> #include <sys/kernel.h> #include <arm/xscale/pxa2x0reg.h> #include <arm/xscale/pxa2x0var.h> #include <arm/xscale/pxa2x0_gpio.h> #include <machine/intr.h> #include <machine/bus.h> #include <zaurus/zaurus/zaurus_reg.h> #include <zaurus/zaurus/zaurus_var.h> struct zusb_softc { struct device sc_dev; void *sc_client_ih; void *sc_host_ih; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; }; static int zusb_match(struct device *, struct cfdata *, void *); static void zusb_attach(struct device *, struct device *, void *); CFATTACH_DECL(zusb, sizeof(struct zusb_softc), zusb_match, zusb_attach, NULL, NULL); static int zusb_client_intr(void *); static int zusb_host_intr(void *); static void zusb_test_and_enabled_host_port(struct zusb_softc *); static int zusb_match(struct device *parent, struct cfdata *cf, void *aux) { if (ZAURUS_ISC3000) return 1; return 0; } static void zusb_attach(struct device *parent, struct device *self, void *aux) { struct zusb_softc *sc = (struct zusb_softc *)self; struct pxaip_attach_args *pxa = aux; sc->sc_iot = pxa->pxa_iot; /* Map I/O space */ if (bus_space_map(sc->sc_iot, PXA2X0_USBDC_BASE, PXA270_USBDC_SIZE, 0, &sc->sc_ioh)) { aprint_error(": couldn't map memory space\n"); return; } pxa2x0_gpio_set_function(C3000_USB_DEVICE_PIN, GPIO_IN); sc->sc_client_ih = pxa2x0_gpio_intr_establish(C3000_USB_DEVICE_PIN, IST_EDGE_BOTH, IPL_BIO, zusb_client_intr, sc); pxa2x0_gpio_set_function(C3000_USB_HOST_PIN, GPIO_IN); sc->sc_host_ih = pxa2x0_gpio_intr_establish(C3000_USB_HOST_PIN, IST_EDGE_BOTH, IPL_BIO, zusb_host_intr, sc); /* configure port 2 for input */ bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR, USBDC_UP2OCR_HXS | USBDC_UP2OCR_HXOE | USBDC_UP2OCR_DPPDE | USBDC_UP2OCR_DMPDE); zusb_test_and_enabled_host_port(sc); printf(": USB Mode detection\n"); } static int zusb_client_intr(void *v) { struct zusb_softc *sc = v; printf("USB client cable changed\n"); zusb_test_and_enabled_host_port(sc); return 1; } static int zusb_host_intr(void *v) { struct zusb_softc *sc = v; printf("USB host cable changed\n"); zusb_test_and_enabled_host_port(sc); return 1; } static void zusb_test_and_enabled_host_port(struct zusb_softc *sc) { int host_cable = pxa2x0_gpio_get_bit(C3000_USB_HOST_PIN); int client_cable = pxa2x0_gpio_get_bit(C3000_USB_DEVICE_PIN); printf("USB cable: host %d, client %d\n", host_cable, client_cable); if (!host_cable) { pxa2x0_gpio_set_function(C3000_USB_HOST_POWER_PIN, GPIO_OUT | GPIO_SET); printf("USB host power enabled\n"); } else { pxa2x0_gpio_set_function(C3000_USB_HOST_POWER_PIN, GPIO_OUT | GPIO_CLR); printf("USB host power disabled\n"); } }