/* * Copyright (c) 2001 M. Warner Losh * 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, 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. * * This code is based on ugen.c and ulpt.c developed by Lennart Augustsson. * This code includes software developed by the NetBSD Foundation, Inc. and * its contributors. */ /* * $FreeBSD: src/sys/dev/usb/ufm.c,v 1.16 2003/10/04 21:41:01 joe Exp $ * $DragonFly: src/sys/dev/usbmisc/ufm/ufm.c,v 1.20 2007/08/07 10:42:40 hasso Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef USB_DEBUG #define DPRINTF(x) if (ufmdebug) kprintf x #define DPRINTFN(n,x) if (ufmdebug>(n)) kprintf x int ufmdebug = 0; SYSCTL_NODE(_hw_usb, OID_AUTO, ufm, CTLFLAG_RW, 0, "USB ufm"); SYSCTL_INT(_hw_usb_ufm, OID_AUTO, debug, CTLFLAG_RW, &ufmdebug, 0, "ufm debug level"); #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif d_open_t ufmopen; d_close_t ufmclose; d_ioctl_t ufmioctl; #define UFM_CDEV_MAJOR 200 static struct dev_ops ufm_ops = { { "ufm", UFM_CDEV_MAJOR, 0 }, .d_open = ufmopen, .d_close = ufmclose, .d_ioctl = ufmioctl, }; #define FM_CMD0 0x00 #define FM_CMD_SET_FREQ 0x01 #define FM_CMD2 0x02 struct ufm_softc { device_t sc_dev; usbd_device_handle sc_udev; usbd_interface_handle sc_iface; int sc_opened; int sc_epaddr; int sc_freq; int sc_refcnt; }; #define UFMUNIT(n) (minor(n)) static device_probe_t ufm_match; static device_attach_t ufm_attach; static device_detach_t ufm_detach; static devclass_t ufm_devclass; static kobj_method_t ufm_methods[] = { DEVMETHOD(device_probe, ufm_match), DEVMETHOD(device_attach, ufm_attach), DEVMETHOD(device_detach, ufm_detach), {0,0} }; static driver_t ufm_driver = { "ufm", ufm_methods, sizeof(struct ufm_softc) }; MODULE_DEPEND(ufm, usb, 1, 1, 1); static int ufm_match(device_t self) { struct usb_attach_arg *uaa = device_get_ivars(self); usb_device_descriptor_t *dd; DPRINTFN(10,("ufm_match\n")); if (!uaa->iface) return UMATCH_NONE; dd = usbd_get_device_descriptor(uaa->device); if (dd && ((UGETW(dd->idVendor) == USB_VENDOR_CYPRESS && UGETW(dd->idProduct) == USB_PRODUCT_CYPRESS_FMRADIO))) return UMATCH_VENDOR_PRODUCT; else return UMATCH_NONE; } static int ufm_attach(device_t self) { struct ufm_softc *sc = device_get_softc(self); struct usb_attach_arg *uaa = device_get_ivars(self); char devinfo[1024]; usb_endpoint_descriptor_t *edesc; usbd_device_handle udev; usbd_interface_handle iface; u_int8_t epcount; usbd_status r; char * ermsg = ""; DPRINTFN(10,("ufm_attach: sc=%p\n", sc)); usbd_devinfo(uaa->device, 0, devinfo); sc->sc_dev = self; device_set_desc_copy(self, devinfo); kprintf("%s: %s\n", device_get_nameunit(sc->sc_dev), devinfo); sc->sc_udev = udev = uaa->device; if ((!uaa->device) || (!uaa->iface)) { ermsg = "device or iface"; goto nobulk; } sc->sc_iface = iface = uaa->iface; sc->sc_opened = 0; sc->sc_refcnt = 0; r = usbd_endpoint_count(iface, &epcount); if (r != USBD_NORMAL_COMPLETION) { ermsg = "endpoints"; goto nobulk; } edesc = usbd_interface2endpoint_descriptor(iface, 0); if (!edesc) { ermsg = "interface endpoint"; goto nobulk; } sc->sc_epaddr = edesc->bEndpointAddress; /* XXX no error trapping, no storing of cdev_t */ dev_ops_add(&ufm_ops, -1, device_get_unit(self)); make_dev(&ufm_ops, device_get_unit(self), UID_ROOT, GID_OPERATOR, 0644, "ufm%d", device_get_unit(self)); DPRINTFN(10, ("ufm_attach: %p\n", sc->sc_udev)); return 0; nobulk: kprintf("%s: could not find %s\n", device_get_nameunit(sc->sc_dev),ermsg); return ENXIO; } int ufmopen(struct dev_open_args *ap) { cdev_t dev = ap->a_head.a_dev; struct ufm_softc *sc; int unit = UFMUNIT(dev); sc = devclass_get_softc(ufm_devclass, unit); if (sc == NULL) return (ENXIO); DPRINTFN(5, ("ufmopen: flag=%d, mode=%d, unit=%d\n", ap->a_oflags, ap->a_devtype, unit)); if (sc->sc_opened) return (EBUSY); if ((ap->a_oflags & (FWRITE|FREAD)) != (FWRITE|FREAD)) return (EACCES); sc->sc_opened = 1; return (0); } int ufmclose(struct dev_close_args *ap) { cdev_t dev = ap->a_head.a_dev; struct ufm_softc *sc; int unit = UFMUNIT(dev); sc = devclass_get_softc(ufm_devclass, unit); DPRINTFN(5, ("ufmclose: flag=%d, mode=%d, unit=%d\n", ap->a_fflag, ap->a_devtype, unit)); sc->sc_opened = 0; sc->sc_refcnt = 0; return 0; } static int ufm_do_req(struct ufm_softc *sc, u_int8_t reqtype, u_int8_t request, u_int16_t value, u_int16_t index, u_int8_t len, void *retbuf) { usb_device_request_t req; usbd_status err; crit_enter(); req.bmRequestType = reqtype; req.bRequest = request; USETW(req.wValue, value); USETW(req.wIndex, index); USETW(req.wLength, len); err = usbd_do_request_flags(sc->sc_udev, &req, retbuf, 0, NULL, USBD_DEFAULT_TIMEOUT); crit_exit(); if (err) { kprintf("usbd_do_request_flags returned %#x\n", err); return (EIO); } return (0); } static int ufm_set_freq(struct ufm_softc *sc, caddr_t addr) { int freq = *(int *)addr; u_int8_t ret; /* * Freq now is in Hz. We need to convert it to the frequency * that the radio wants. This frequency is 10.7MHz above * the actual frequency. We then need to convert to * units of 12.5kHz. We add one to the IFM to make rounding * easier. */ sc->sc_freq = freq; freq = (freq + 10700001) / 12500; /* This appears to set the frequency */ if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD_SET_FREQ, freq >> 8, freq, 1, &ret) != 0) return (EIO); /* Not sure what this does */ if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x96, 0xb7, 1, &ret) != 0) return (EIO); return (0); } static int ufm_get_freq(struct ufm_softc *sc, caddr_t addr) { int *valp = (int *)addr; *valp = sc->sc_freq; return (0); } static int ufm_start(struct ufm_softc *sc, caddr_t addr) { u_int8_t ret; if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x00, 0xc7, 1, &ret)) return (EIO); if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD2, 0x01, 0x00, 1, &ret)) return (EIO); if (ret & 0x1) return (EIO); return (0); } static int ufm_stop(struct ufm_softc *sc, caddr_t addr) { u_int8_t ret; if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x16, 0x1C, 1, &ret)) return (EIO); if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD2, 0x00, 0x00, 1, &ret)) return (EIO); return (0); } static int ufm_get_stat(struct ufm_softc *sc, caddr_t addr) { u_int8_t ret; /* * Note, there's a 240ms settle time before the status * will be valid, so tsleep that amount. hz/4 is a good * approximation of that. Since this is a short sleep * we don't try to catch any signals to keep things * simple. */ tsleep(sc, 0, "ufmwait", hz/4); if (ufm_do_req(sc, UT_READ_VENDOR_DEVICE, FM_CMD0, 0x00, 0x24, 1, &ret)) return (EIO); *(int *)addr = ret; return (0); } int ufmioctl(struct dev_ioctl_args *ap) { cdev_t dev = ap->a_head.a_dev; caddr_t addr = ap->a_data; struct ufm_softc *sc; int unit = UFMUNIT(dev); int error = 0; sc = devclass_get_softc(ufm_devclass, unit); switch (ap->a_cmd) { case FM_SET_FREQ: error = ufm_set_freq(sc, addr); break; case FM_GET_FREQ: error = ufm_get_freq(sc, addr); break; case FM_START: error = ufm_start(sc, addr); break; case FM_STOP: error = ufm_stop(sc, addr); break; case FM_GET_STAT: error = ufm_get_stat(sc, addr); break; default: return ENOTTY; break; } return error; } static int ufm_detach(device_t self) { DPRINTF(("%s: disconnected\n", device_get_nameunit(self))); return 0; } DRIVER_MODULE(ufm, uhub, ufm_driver, ufm_devclass, usbd_driver_load, 0);