/*- * 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. */ #include __FBSDID("$FreeBSD$"); #include "usbdevs.h" #include #include #include #include #define USB_DEBUG_VAR usb2_debug #include #include #include #include #include #include #include #include #include #define UFM_CMD0 0x00 #define UFM_CMD_SET_FREQ 0x01 #define UFM_CMD2 0x02 struct ufm_softc { struct usb_fifo_sc sc_fifo; struct mtx sc_mtx; struct usb_device *sc_udev; uint32_t sc_unit; uint32_t sc_freq; uint8_t sc_name[16]; }; /* prototypes */ static device_probe_t ufm_probe; static device_attach_t ufm_attach; static device_detach_t ufm_detach; static usb2_fifo_ioctl_t ufm_ioctl; static usb2_fifo_open_t ufm_open; static struct usb_fifo_methods ufm_fifo_methods = { .f_ioctl = &ufm_ioctl, .f_open = &ufm_open, .basename[0] = "ufm", }; static int ufm_do_req(struct ufm_softc *, uint8_t, uint16_t, uint16_t, uint8_t *); static int ufm_set_freq(struct ufm_softc *, void *); static int ufm_get_freq(struct ufm_softc *, void *); static int ufm_start(struct ufm_softc *, void *); static int ufm_stop(struct ufm_softc *, void *); static int ufm_get_stat(struct ufm_softc *, void *); static devclass_t ufm_devclass; static device_method_t ufm_methods[] = { DEVMETHOD(device_probe, ufm_probe), DEVMETHOD(device_attach, ufm_attach), DEVMETHOD(device_detach, ufm_detach), {0, 0} }; static driver_t ufm_driver = { .name = "ufm", .methods = ufm_methods, .size = sizeof(struct ufm_softc), }; DRIVER_MODULE(ufm, uhub, ufm_driver, ufm_devclass, NULL, 0); MODULE_DEPEND(ufm, usb, 1, 1, 1); static int ufm_probe(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); if (uaa->usb_mode != USB_MODE_HOST) { return (ENXIO); } if ((uaa->info.idVendor == USB_VENDOR_CYPRESS) && (uaa->info.idProduct == USB_PRODUCT_CYPRESS_FMRADIO)) { return (0); } return (ENXIO); } static int ufm_attach(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); struct ufm_softc *sc = device_get_softc(dev); int error; sc->sc_udev = uaa->device; sc->sc_unit = device_get_unit(dev); snprintf(sc->sc_name, sizeof(sc->sc_name), "%s", device_get_nameunit(dev)); mtx_init(&sc->sc_mtx, "ufm lock", NULL, MTX_DEF | MTX_RECURSE); device_set_usb2_desc(dev); error = usb2_fifo_attach(uaa->device, sc, &sc->sc_mtx, &ufm_fifo_methods, &sc->sc_fifo, device_get_unit(dev), 0 - 1, uaa->info.bIfaceIndex, UID_ROOT, GID_OPERATOR, 0644); if (error) { goto detach; } return (0); /* success */ detach: ufm_detach(dev); return (ENXIO); } static int ufm_detach(device_t dev) { struct ufm_softc *sc = device_get_softc(dev); usb2_fifo_detach(&sc->sc_fifo); mtx_destroy(&sc->sc_mtx); return (0); } static int ufm_open(struct usb_fifo *dev, int fflags) { if ((fflags & (FWRITE | FREAD)) != (FWRITE | FREAD)) { return (EACCES); } return (0); } static int ufm_do_req(struct ufm_softc *sc, uint8_t request, uint16_t value, uint16_t index, uint8_t *retbuf) { int error; struct usb_device_request req; uint8_t buf[1]; req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = request; USETW(req.wValue, value); USETW(req.wIndex, index); USETW(req.wLength, 1); error = usb2_do_request(sc->sc_udev, NULL, &req, buf); if (retbuf) { *retbuf = buf[0]; } if (error) { return (ENXIO); } return (0); } static int ufm_set_freq(struct ufm_softc *sc, void *addr) { int freq = *(int *)addr; /* * 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. */ mtx_lock(&sc->sc_mtx); sc->sc_freq = freq; mtx_unlock(&sc->sc_mtx); freq = (freq + 10700001) / 12500; /* This appears to set the frequency */ if (ufm_do_req(sc, UFM_CMD_SET_FREQ, freq >> 8, freq, NULL) != 0) { return (EIO); } /* Not sure what this does */ if (ufm_do_req(sc, UFM_CMD0, 0x96, 0xb7, NULL) != 0) { return (EIO); } return (0); } static int ufm_get_freq(struct ufm_softc *sc, void *addr) { int *valp = (int *)addr; mtx_lock(&sc->sc_mtx); *valp = sc->sc_freq; mtx_unlock(&sc->sc_mtx); return (0); } static int ufm_start(struct ufm_softc *sc, void *addr) { uint8_t ret; if (ufm_do_req(sc, UFM_CMD0, 0x00, 0xc7, &ret)) { return (EIO); } if (ufm_do_req(sc, UFM_CMD2, 0x01, 0x00, &ret)) { return (EIO); } if (ret & 0x1) { return (EIO); } return (0); } static int ufm_stop(struct ufm_softc *sc, void *addr) { if (ufm_do_req(sc, UFM_CMD0, 0x16, 0x1C, NULL)) { return (EIO); } if (ufm_do_req(sc, UFM_CMD2, 0x00, 0x00, NULL)) { return (EIO); } return (0); } static int ufm_get_stat(struct ufm_softc *sc, void *addr) { uint8_t ret; /* * Note, there's a 240ms settle time before the status * will be valid, so sleep that amount. */ usb2_pause_mtx(NULL, hz / 4); if (ufm_do_req(sc, UFM_CMD0, 0x00, 0x24, &ret)) { return (EIO); } *(int *)addr = ret; return (0); } static int ufm_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr, int fflags) { struct ufm_softc *sc = fifo->priv_sc0; int error = 0; switch (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: error = ENOTTY; break; } return (error); }