diff options
Diffstat (limited to 'sys/legacy/dev/usb/ufm.c')
| -rw-r--r-- | sys/legacy/dev/usb/ufm.c | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/sys/legacy/dev/usb/ufm.c b/sys/legacy/dev/usb/ufm.c new file mode 100644 index 0000000..2635827 --- /dev/null +++ b/sys/legacy/dev/usb/ufm.c @@ -0,0 +1,376 @@ +/*- + * Copyright (c) 2001-2007 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 <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/bus.h> +#include <sys/ioccom.h> +#include <sys/fcntl.h> +#include <sys/filio.h> +#include <sys/conf.h> +#include <sys/uio.h> +#include <sys/tty.h> +#include <sys/file.h> +#include <sys/selinfo.h> +#include <sys/poll.h> +#include <sys/sysctl.h> + +#include <dev/usb/usb.h> +#include <dev/usb/usbdi.h> +#include <dev/usb/usbdi_util.h> + +#include "usbdevs.h" +#include <dev/usb/dsbr100io.h> + +#ifdef USB_DEBUG +#define DPRINTF(x) if (ufmdebug) printf x +#define DPRINTFN(n,x) if (ufmdebug>(n)) printf 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; + +static struct cdevsw ufm_cdevsw = { + .d_version = D_VERSION, + .d_flags = D_NEEDGIANT, + .d_open = ufmopen, + .d_close = ufmclose, + .d_ioctl = ufmioctl, + .d_name = "ufm", +}; + +#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) (dev2unit(n)) + +static device_probe_t ufm_match; +static device_attach_t ufm_attach; +static device_detach_t ufm_detach; + +static device_method_t ufm_methods[] = { + /* Device interface */ + 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) +}; + +static devclass_t ufm_devclass; + +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); + usb_endpoint_descriptor_t *edesc; + usbd_device_handle udev; + usbd_interface_handle iface; + u_int8_t epcount; + usbd_status r; + char * ermsg = "<none>"; + + DPRINTFN(10,("ufm_attach: sc=%p\n", sc)); + sc->sc_dev = self; + 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 struct cdev **/ + (void) make_dev(&ufm_cdevsw, 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: + device_printf(sc->sc_dev, "could not find %s\n", ermsg); + return ENXIO; +} + + +int +ufmopen(struct cdev *dev, int flag, int mode, struct thread *td) +{ + 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", + flag, mode, unit)); + + if (sc->sc_opened) + return (EBUSY); + + if ((flag & (FWRITE|FREAD)) != (FWRITE|FREAD)) + return (EACCES); + + sc->sc_opened = 1; + return (0); +} + +int +ufmclose(struct cdev *dev, int flag, int mode, struct thread *td) +{ + 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", flag, mode, 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) +{ + int s; + usb_device_request_t req; + usbd_status err; + + s = splusb(); + 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); + splx(s); + if (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 cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) +{ + struct ufm_softc *sc; + + int unit = UFMUNIT(dev); + int error = 0; + + sc = devclass_get_softc(ufm_devclass, unit); + + 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: + return ENOTTY; + break; + } + return error; +} + +static int +ufm_detach(device_t self) +{ + return 0; +} + +MODULE_DEPEND(ufm, usb, 1, 1, 1); +DRIVER_MODULE(ufm, uhub, ufm_driver, ufm_devclass, usbd_driver_load, 0); |
