285 lines
7.1 KiB
C
285 lines
7.1 KiB
C
/* $NetBSD: udsbr.c,v 1.15 2008/05/24 16:40:58 cube Exp $ */
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/*
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (lennart@augustsson.net).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Driver for the D-Link DSB-R100 FM radio.
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* I apologize for the magic hex constants, but this is what happens
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* when you have to reverse engineer the driver.
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* Parts of the code borrowed from Linux and parts from Warner Losh's
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* FreeBSD driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: udsbr.c,v 1.15 2008/05/24 16:40:58 cube Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/radioio.h>
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#include <dev/radio_if.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include <dev/usb/usbdevs.h>
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#ifdef UDSBR_DEBUG
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#define DPRINTF(x) if (udsbrdebug) logprintf x
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#define DPRINTFN(n,x) if (udsbrdebug>(n)) logprintf x
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int udsbrdebug = 0;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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#define UDSBR_CONFIG_NO 1
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Static int udsbr_get_info(void *, struct radio_info *);
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Static int udsbr_set_info(void *, struct radio_info *);
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const struct radio_hw_if udsbr_hw_if = {
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NULL, /* open */
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NULL, /* close */
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udsbr_get_info,
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udsbr_set_info,
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NULL
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};
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struct udsbr_softc {
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USBBASEDEVICE sc_dev;
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usbd_device_handle sc_udev;
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char sc_mute;
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char sc_vol;
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u_int32_t sc_freq;
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device_t sc_child;
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char sc_dying;
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};
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Static int udsbr_req(struct udsbr_softc *sc, int ureq, int value,
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int index);
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Static void udsbr_start(struct udsbr_softc *sc);
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Static void udsbr_stop(struct udsbr_softc *sc);
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Static void udsbr_setfreq(struct udsbr_softc *sc, int freq);
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Static int udsbr_status(struct udsbr_softc *sc);
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int udsbr_match(device_t, cfdata_t, void *);
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void udsbr_attach(device_t, device_t, void *);
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void udsbr_childdet(device_t, device_t);
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int udsbr_detach(device_t, int);
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int udsbr_activate(device_t, enum devact);
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extern struct cfdriver udsbr_cd;
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CFATTACH_DECL2_NEW(udsbr, sizeof(struct udsbr_softc), udsbr_match,
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udsbr_attach, udsbr_detach, udsbr_activate, NULL, udsbr_childdet);
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USB_MATCH(udsbr)
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{
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USB_MATCH_START(udsbr, uaa);
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DPRINTFN(50,("udsbr_match\n"));
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if (uaa->vendor != USB_VENDOR_CYPRESS ||
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uaa->product != USB_PRODUCT_CYPRESS_FMRADIO)
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return (UMATCH_NONE);
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return (UMATCH_VENDOR_PRODUCT);
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}
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USB_ATTACH(udsbr)
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{
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USB_ATTACH_START(udsbr, sc, uaa);
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usbd_device_handle dev = uaa->device;
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char *devinfop;
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usbd_status err;
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DPRINTFN(10,("udsbr_attach: sc=%p\n", sc));
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sc->sc_dev = self;
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devinfop = usbd_devinfo_alloc(dev, 0);
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USB_ATTACH_SETUP;
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aprint_normal_dev(self, "%s\n", devinfop);
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usbd_devinfo_free(devinfop);
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err = usbd_set_config_no(dev, UDSBR_CONFIG_NO, 1);
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if (err) {
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aprint_error_dev(self, "setting config no failed\n");
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USB_ATTACH_ERROR_RETURN;
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}
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sc->sc_udev = dev;
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DPRINTFN(10, ("udsbr_attach: %p\n", sc->sc_udev));
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usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
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USBDEV(sc->sc_dev));
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sc->sc_child = radio_attach_mi(&udsbr_hw_if, sc, USBDEV(sc->sc_dev));
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USB_ATTACH_SUCCESS_RETURN;
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}
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void
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udsbr_childdet(device_t self, device_t child)
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{
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}
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USB_DETACH(udsbr)
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{
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USB_DETACH_START(udsbr, sc);
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int rv = 0;
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if (sc->sc_child != NULL)
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rv = config_detach(sc->sc_child, flags);
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usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
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USBDEV(sc->sc_dev));
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return (rv);
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}
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int
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udsbr_activate(device_ptr_t self, enum devact act)
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{
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struct udsbr_softc *sc = device_private(self);
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int rv = 0;
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switch (act) {
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case DVACT_ACTIVATE:
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return (EOPNOTSUPP);
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break;
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case DVACT_DEACTIVATE:
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sc->sc_dying = 1;
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if (sc->sc_child != NULL)
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rv = config_deactivate(sc->sc_child);
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break;
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}
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return (rv);
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}
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int
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udsbr_req(struct udsbr_softc *sc, int ureq, int value, int index)
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{
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usb_device_request_t req;
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usbd_status err;
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u_char data;
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DPRINTFN(1,("udsbr_req: ureq=0x%02x value=0x%04x index=0x%04x\n",
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ureq, value, index));
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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req.bRequest = ureq;
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USETW(req.wValue, value);
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USETW(req.wIndex, index);
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USETW(req.wLength, 1);
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err = usbd_do_request(sc->sc_udev, &req, &data);
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if (err) {
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aprint_error_dev(sc->sc_dev, "request failed err=%d\n", err);
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}
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return !(data & 1);
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}
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void
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udsbr_start(struct udsbr_softc *sc)
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{
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(void)udsbr_req(sc, 0x00, 0x0000, 0x00c7);
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(void)udsbr_req(sc, 0x02, 0x0001, 0x0000);
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}
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void
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udsbr_stop(struct udsbr_softc *sc)
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{
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(void)udsbr_req(sc, 0x00, 0x0016, 0x001c);
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(void)udsbr_req(sc, 0x02, 0x0000, 0x0000);
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}
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void
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udsbr_setfreq(struct udsbr_softc *sc, int freq)
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{
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DPRINTF(("udsbr_setfreq: setfreq=%d\n", freq));
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/*
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* Freq now is in Hz. We need to convert it to the frequency
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* that the radio wants. This frequency is 10.7MHz above
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* the actual frequency. We then need to convert to
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* units of 12.5kHz. We add one to the IFM to make rounding
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* easier.
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*/
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freq = (freq * 1000 + 10700001) / 12500;
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(void)udsbr_req(sc, 0x01, (freq >> 8) & 0xff, freq & 0xff);
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(void)udsbr_req(sc, 0x00, 0x0096, 0x00b7);
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usbd_delay_ms(sc->sc_udev, 240); /* wait for signal to settle */
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}
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int
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udsbr_status(struct udsbr_softc *sc)
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{
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return (udsbr_req(sc, 0x00, 0x0000, 0x0024));
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}
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int
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udsbr_get_info(void *v, struct radio_info *ri)
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{
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struct udsbr_softc *sc = v;
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ri->mute = sc->sc_mute;
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ri->volume = sc->sc_vol ? 255 : 0;
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ri->caps = RADIO_CAPS_DETECT_STEREO;
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ri->rfreq = 0;
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ri->lock = 0;
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ri->freq = sc->sc_freq;
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ri->info = udsbr_status(sc) ? RADIO_INFO_STEREO : 0;
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return (0);
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}
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int
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udsbr_set_info(void *v, struct radio_info *ri)
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{
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struct udsbr_softc *sc = v;
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sc->sc_mute = ri->mute != 0;
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sc->sc_vol = ri->volume != 0;
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sc->sc_freq = ri->freq;
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udsbr_setfreq(sc, sc->sc_freq);
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if (sc->sc_mute || sc->sc_vol == 0)
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udsbr_stop(sc);
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else
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udsbr_start(sc);
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return (0);
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}
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