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-rw-r--r--sys/dev/usb/misc/ufm.c329
1 files changed, 329 insertions, 0 deletions
diff --git a/sys/dev/usb/misc/ufm.c b/sys/dev/usb/misc/ufm.c
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+++ b/sys/dev/usb/misc/ufm.c
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+/*-
+ * 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);
+}
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