1 /* $NetBSD: udsbr.c,v 1.6 2002/02/12 10:51:49 tron Exp $ */ 2 3 /* 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart@augustsson.net). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Driver for the D-Link DSB-R100 FM radio. 41 * I apologize for the magic hex constants, but this is what happens 42 * when you have to reverse engineer the driver. 43 * Parts of the code borrowed from Linux and parts from Warner Losh's 44 * FreeBSD driver. 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: udsbr.c,v 1.6 2002/02/12 10:51:49 tron Exp $"); 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/kernel.h> 53 #include <sys/device.h> 54 55 #include <sys/radioio.h> 56 #include <dev/radio_if.h> 57 58 #include <dev/usb/usb.h> 59 #include <dev/usb/usbdi.h> 60 #include <dev/usb/usbdi_util.h> 61 62 #include <dev/usb/usbdevs.h> 63 64 #ifdef UDSBR_DEBUG 65 #define DPRINTF(x) if (udsbrdebug) logprintf x 66 #define DPRINTFN(n,x) if (udsbrdebug>(n)) logprintf x 67 int udsbrdebug = 0; 68 #else 69 #define DPRINTF(x) 70 #define DPRINTFN(n,x) 71 #endif 72 73 #define UDSBR_CONFIG_NO 1 74 75 Static int udsbr_get_info(void *, struct radio_info *); 76 Static int udsbr_set_info(void *, struct radio_info *); 77 78 struct radio_hw_if udsbr_hw_if = { 79 NULL, /* open */ 80 NULL, /* close */ 81 udsbr_get_info, 82 udsbr_set_info, 83 NULL 84 }; 85 86 struct udsbr_softc { 87 USBBASEDEVICE sc_dev; 88 usbd_device_handle sc_udev; 89 90 char sc_mute; 91 char sc_vol; 92 u_int32_t sc_freq; 93 94 struct device *sc_child; 95 96 char sc_dying; 97 }; 98 99 Static int udsbr_req(struct udsbr_softc *sc, int ureq, int value, 100 int index); 101 Static void udsbr_start(struct udsbr_softc *sc); 102 Static void udsbr_stop(struct udsbr_softc *sc); 103 Static void udsbr_setfreq(struct udsbr_softc *sc, int freq); 104 Static int udsbr_status(struct udsbr_softc *sc); 105 106 USB_DECLARE_DRIVER(udsbr); 107 108 USB_MATCH(udsbr) 109 { 110 USB_MATCH_START(udsbr, uaa); 111 112 DPRINTFN(50,("udsbr_match\n")); 113 114 if (uaa->iface != NULL) 115 return (UMATCH_NONE); 116 117 if (uaa->vendor != USB_VENDOR_CYPRESS || 118 uaa->product != USB_PRODUCT_CYPRESS_FMRADIO) 119 return (UMATCH_NONE); 120 return (UMATCH_VENDOR_PRODUCT); 121 } 122 123 USB_ATTACH(udsbr) 124 { 125 USB_ATTACH_START(udsbr, sc, uaa); 126 usbd_device_handle dev = uaa->device; 127 char devinfo[1024]; 128 usbd_status err; 129 130 DPRINTFN(10,("udsbr_attach: sc=%p\n", sc)); 131 132 usbd_devinfo(dev, 0, devinfo); 133 USB_ATTACH_SETUP; 134 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo); 135 136 err = usbd_set_config_no(dev, UDSBR_CONFIG_NO, 1); 137 if (err) { 138 printf("%s: setting config no failed\n", 139 USBDEVNAME(sc->sc_dev)); 140 USB_ATTACH_ERROR_RETURN; 141 } 142 143 sc->sc_udev = dev; 144 145 DPRINTFN(10, ("udsbr_attach: %p\n", sc->sc_udev)); 146 147 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 148 USBDEV(sc->sc_dev)); 149 150 sc->sc_child = radio_attach_mi(&udsbr_hw_if, sc, USBDEV(sc->sc_dev)); 151 152 USB_ATTACH_SUCCESS_RETURN; 153 } 154 155 USB_DETACH(udsbr) 156 { 157 USB_DETACH_START(udsbr, sc); 158 int rv = 0; 159 160 if (sc->sc_child != NULL) 161 rv = config_detach(sc->sc_child, flags); 162 163 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 164 USBDEV(sc->sc_dev)); 165 166 return (rv); 167 } 168 169 int 170 udsbr_activate(device_ptr_t self, enum devact act) 171 { 172 struct udsbr_softc *sc = (struct udsbr_softc *)self; 173 int rv = 0; 174 175 switch (act) { 176 case DVACT_ACTIVATE: 177 return (EOPNOTSUPP); 178 break; 179 180 case DVACT_DEACTIVATE: 181 sc->sc_dying = 1; 182 if (sc->sc_child != NULL) 183 rv = config_deactivate(sc->sc_child); 184 break; 185 } 186 return (rv); 187 } 188 189 int 190 udsbr_req(struct udsbr_softc *sc, int ureq, int value, int index) 191 { 192 usb_device_request_t req; 193 usbd_status err; 194 u_char data; 195 196 DPRINTFN(1,("udsbr_req: ureq=0x%02x value=0x%04x index=0x%04x\n", 197 ureq, value, index)); 198 req.bmRequestType = UT_READ_VENDOR_DEVICE; 199 req.bRequest = ureq; 200 USETW(req.wValue, value); 201 USETW(req.wIndex, index); 202 USETW(req.wLength, 1); 203 err = usbd_do_request(sc->sc_udev, &req, &data); 204 if (err) { 205 printf("%s: request failed err=%d\n", USBDEVNAME(sc->sc_dev), 206 err); 207 } 208 return !(data & 1); 209 } 210 211 void 212 udsbr_start(struct udsbr_softc *sc) 213 { 214 (void)udsbr_req(sc, 0x00, 0x0000, 0x00c7); 215 (void)udsbr_req(sc, 0x02, 0x0001, 0x0000); 216 } 217 218 void 219 udsbr_stop(struct udsbr_softc *sc) 220 { 221 (void)udsbr_req(sc, 0x00, 0x0016, 0x001c); 222 (void)udsbr_req(sc, 0x02, 0x0000, 0x0000); 223 } 224 225 void 226 udsbr_setfreq(struct udsbr_softc *sc, int freq) 227 { 228 DPRINTF(("udsbr_setfreq: setfreq=%d\n", freq)); 229 /* 230 * Freq now is in Hz. We need to convert it to the frequency 231 * that the radio wants. This frequency is 10.7MHz above 232 * the actual frequency. We then need to convert to 233 * units of 12.5kHz. We add one to the IFM to make rounding 234 * easier. 235 */ 236 freq = (freq * 1000 + 10700001) / 12500; 237 (void)udsbr_req(sc, 0x01, (freq >> 8) & 0xff, freq & 0xff); 238 (void)udsbr_req(sc, 0x00, 0x0096, 0x00b7); 239 usbd_delay_ms(sc->sc_udev, 240); /* wait for signal to settle */ 240 } 241 242 int 243 udsbr_status(struct udsbr_softc *sc) 244 { 245 return (udsbr_req(sc, 0x00, 0x0000, 0x0024)); 246 } 247 248 249 int 250 udsbr_get_info(void *v, struct radio_info *ri) 251 { 252 struct udsbr_softc *sc = v; 253 254 ri->mute = sc->sc_mute; 255 ri->volume = sc->sc_vol ? 255 : 0; 256 ri->caps = RADIO_CAPS_DETECT_STEREO; 257 ri->rfreq = 0; 258 ri->lock = 0; 259 ri->freq = sc->sc_freq; 260 ri->info = udsbr_status(sc) ? RADIO_INFO_STEREO : 0; 261 262 return (0); 263 } 264 265 int 266 udsbr_set_info(void *v, struct radio_info *ri) 267 { 268 struct udsbr_softc *sc = v; 269 270 sc->sc_mute = ri->mute != 0; 271 sc->sc_vol = ri->volume != 0; 272 sc->sc_freq = ri->freq; 273 udsbr_setfreq(sc, sc->sc_freq); 274 275 if (sc->sc_mute || sc->sc_vol == 0) 276 udsbr_stop(sc); 277 else 278 udsbr_start(sc); 279 280 return (0); 281 } 282