diff options
Diffstat (limited to 'sys/dev/usb/misc/ufm.c')
-rw-r--r-- | sys/dev/usb/misc/ufm.c | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/sys/dev/usb/misc/ufm.c b/sys/dev/usb/misc/ufm.c new file mode 100644 index 0000000..81ce1b3 --- /dev/null +++ b/sys/dev/usb/misc/ufm.c @@ -0,0 +1,329 @@ +/*- + * 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + + +#include "usbdevs.h" +#include <dev/usb/usb.h> +#include <dev/usb/usb_mfunc.h> +#include <dev/usb/usb_error.h> +#include <dev/usb/ufm_ioctl.h> + +#define USB_DEBUG_VAR usb2_debug + +#include <dev/usb/usb_core.h> +#include <dev/usb/usb_debug.h> +#include <dev/usb/usb_process.h> +#include <dev/usb/usb_request.h> +#include <dev/usb/usb_lookup.h> +#include <dev/usb/usb_util.h> +#include <dev/usb/usb_busdma.h> +#include <dev/usb/usb_mbuf.h> +#include <dev/usb/usb_dev.h> + +#define UFM_CMD0 0x00 +#define UFM_CMD_SET_FREQ 0x01 +#define UFM_CMD2 0x02 + +struct ufm_softc { + struct usb2_fifo_sc sc_fifo; + struct mtx sc_mtx; + + struct usb2_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 usb2_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, ushub, ufm_driver, ufm_devclass, NULL, 0); +MODULE_DEPEND(ufm, usb, 1, 1, 1); + +static int +ufm_probe(device_t dev) +{ + struct usb2_attach_arg *uaa = device_get_ivars(dev); + + if (uaa->usb2_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 usb2_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); + + /* set interface permissions */ + usb2_set_iface_perm(uaa->device, uaa->info.bIfaceIndex, + UID_ROOT, GID_OPERATOR, 0644); + + 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); + 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 usb2_fifo *dev, int fflags, struct thread *td) +{ + 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 usb2_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 usb2_fifo *fifo, u_long cmd, void *addr, + int fflags, struct thread *td) +{ + 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); +} |