radiotrack.c revision 1.1
1 /* $NetBSD: radiotrack.c,v 1.1 2002/01/01 21:51:41 augustss Exp $ */ 2 /* $OpenBSD: radiotrack.c,v 1.1 2001/12/05 10:27:06 mickey Exp $ */ 3 /* $RuOBSD: radiotrack.c,v 1.3 2001/10/18 16:51:36 pva Exp $ */ 4 5 /* 6 * Copyright (c) 2001 Maxim Tsyplakov <tm (at) oganer.net>, 7 * Vladimir Popov <jumbo (at) narod.ru> 8 * All rights reserved. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* AIMS Lab Radiotrack FM Radio Card device driver */ 32 33 /* 34 * Sanyo LM7000 Direct PLL Frequency Synthesizer 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/proc.h> 40 #include <sys/errno.h> 41 #include <sys/ioctl.h> 42 #include <sys/device.h> 43 #include <sys/radioio.h> 44 45 #include <machine/bus.h> 46 47 #include <dev/isa/isavar.h> 48 #include <dev/ic/lm700x.h> 49 #include <dev/radio_if.h> 50 51 #define RF_25K 25 52 #define RF_50K 50 53 #define RF_100K 100 54 55 #define MAX_VOL 5 /* XXX Find real value */ 56 #define VOLUME_RATIO(x) (255 * x / MAX_VOL) 57 58 #define RT_BASE_VALID(x) \ 59 ((x == 0x30C) || (x == 0x20C) || (x == 0x284) || (x == 0x384)) 60 61 #define CARD_RADIOTRACK 0x01 62 #define CARD_SF16FMI 0x02 63 #define CARD_UNKNOWN 0xFF 64 65 #define RTRACK_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \ 66 RADIO_CAPS_DETECT_SIGNAL | \ 67 RADIO_CAPS_SET_MONO | \ 68 RADIO_CAPS_REFERENCE_FREQ 69 70 #define RT_WREN_ON (1 << 0) 71 #define RT_WREN_OFF (0 << 0) 72 73 #define RT_CLCK_ON (1 << 1) 74 #define RT_CLCK_OFF (0 << 1) 75 76 #define RT_DATA_ON (1 << 2) 77 #define RT_DATA_OFF (0 << 2) 78 79 #define RT_CARD_ON (1 << 3) 80 #define RT_CARD_OFF (0 << 3) 81 82 #define RT_SIGNAL_METER (1 << 4) 83 #define RT_SIGNAL_METER_DELAY 150000 84 85 #define RT_VOLUME_DOWN (1 << 6) 86 #define RT_VOLUME_UP (2 << 6) 87 #define RT_VOLUME_STEADY (3 << 6) 88 #define RT_VOLUME_DELAY 100000 89 90 int rt_probe(struct device *, struct cfdata *, void *); 91 void rt_attach(struct device *, struct device * self, void *); 92 int rt_get_info(void *, struct radio_info *); 93 int rt_set_info(void *, struct radio_info *); 94 95 struct radio_hw_if rt_hw_if = { 96 NULL, /* open */ 97 NULL, /* close */ 98 rt_get_info, 99 rt_set_info, 100 NULL 101 }; 102 103 struct rt_softc { 104 struct device sc_dev; 105 106 int mute; 107 u_int8_t vol; 108 u_int8_t cardtype; 109 u_int32_t freq; 110 u_int32_t rf; 111 u_int32_t stereo; 112 113 struct lm700x_t lm; 114 }; 115 116 struct cfattach rt_ca = { 117 sizeof(struct rt_softc), rt_probe, rt_attach 118 }; 119 120 int rt_find(bus_space_tag_t, bus_space_handle_t); 121 void rt_set_mute(struct rt_softc *, int); 122 void rt_set_freq(struct rt_softc *, u_int32_t); 123 u_int8_t rt_state(bus_space_tag_t, bus_space_handle_t); 124 125 void rt_lm700x_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 126 void rt_lm700x_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 127 128 u_int8_t rt_conv_vol(u_int8_t); 129 u_int8_t rt_unconv_vol(u_int8_t); 130 131 int 132 rt_probe(struct device *parent, struct cfdata *cf, void *aux) 133 { 134 struct isa_attach_args *ia = aux; 135 bus_space_tag_t iot = ia->ia_iot; 136 bus_space_handle_t ioh; 137 138 int iosize = 1, iobase = ia->ia_iobase; 139 140 if (!RT_BASE_VALID(iobase)) { 141 printf("rt: configured iobase 0x%x invalid", iobase); 142 return 0; 143 } 144 145 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 146 return 0; 147 148 bus_space_unmap(iot, ioh, iosize); 149 150 if (!rt_find(iot, ioh)) 151 return 0; 152 153 ia->ia_iosize = iosize; 154 return 1; 155 } 156 157 void 158 rt_attach(struct device *parent, struct device *self, void *aux) 159 { 160 struct rt_softc *sc = (void *) self; 161 struct isa_attach_args *ia = aux; 162 163 sc->lm.iot = ia->ia_iot; 164 sc->rf = LM700X_REF_050; 165 sc->stereo = LM700X_STEREO; 166 sc->mute = 0; 167 sc->freq = MIN_FM_FREQ; 168 sc->vol = 0; 169 170 /* remap I/O */ 171 if (bus_space_map(sc->lm.iot, ia->ia_iobase, ia->ia_iosize, 172 0, &sc->lm.ioh)) 173 panic(": bus_space_map() of %s failed", sc->sc_dev.dv_xname); 174 175 switch (sc->lm.iot) { 176 case 0x20C: 177 /* FALLTHROUGH */ 178 case 0x30C: 179 sc->cardtype = CARD_RADIOTRACK; 180 printf(": AIMS Lab Radiotrack or compatible"); 181 break; 182 case 0x284: 183 /* FALLTHROUGH */ 184 case 0x384: 185 sc->cardtype = CARD_SF16FMI; 186 printf(": SoundForte RadioX SF16-FMI"); 187 break; 188 default: 189 sc->cardtype = CARD_UNKNOWN; 190 printf(": Unknown card"); 191 break; 192 } 193 194 /* Configure struct lm700x_t lm */ 195 sc->lm.offset = 0; 196 sc->lm.wzcl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_OFF; 197 sc->lm.wzch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_OFF; 198 sc->lm.wocl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_ON; 199 sc->lm.woch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_ON; 200 sc->lm.initdata = 0; 201 sc->lm.rsetdata = RT_DATA_ON | RT_CLCK_ON | RT_WREN_OFF; 202 sc->lm.init = rt_lm700x_init; 203 sc->lm.rset = rt_lm700x_rset; 204 205 rt_set_freq(sc, sc->freq); 206 207 radio_attach_mi(&rt_hw_if, sc, &sc->sc_dev); 208 } 209 210 /* 211 * Mute the card 212 */ 213 void 214 rt_set_mute(struct rt_softc *sc, int vol) 215 { 216 int val; 217 218 if (sc->mute) { 219 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 220 RT_VOLUME_DOWN | RT_CARD_ON); 221 DELAY(MAX_VOL * RT_VOLUME_DELAY); 222 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 223 RT_VOLUME_STEADY | RT_CARD_ON); 224 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, RT_CARD_OFF); 225 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, RT_CARD_OFF); 226 } else { 227 val = sc->vol - vol; 228 if (val < 0) { 229 val *= -1; 230 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 231 RT_VOLUME_DOWN | RT_CARD_ON); 232 } else { 233 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 234 RT_VOLUME_UP | RT_CARD_ON); 235 } 236 DELAY(val * RT_VOLUME_DELAY); 237 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 238 RT_VOLUME_STEADY | RT_CARD_ON); 239 } 240 } 241 242 void 243 rt_set_freq(struct rt_softc *sc, u_int32_t nfreq) 244 { 245 u_int32_t reg; 246 247 if (nfreq > MAX_FM_FREQ) 248 nfreq = MAX_FM_FREQ; 249 if (nfreq < MIN_FM_FREQ) 250 nfreq = MIN_FM_FREQ; 251 252 sc->freq = nfreq; 253 254 reg = lm700x_encode_freq(nfreq, sc->rf); 255 reg |= sc->stereo | sc->rf | LM700X_DIVIDER_FM; 256 257 lm700x_hardware_write(&sc->lm, reg, RT_VOLUME_STEADY); 258 259 rt_set_mute(sc, sc->vol); 260 } 261 262 /* 263 * Return state of the card - tuned/not tuned, mono/stereo 264 */ 265 u_int8_t 266 rt_state(bus_space_tag_t iot, bus_space_handle_t ioh) 267 { 268 u_int8_t ret; 269 270 bus_space_write_1(iot, ioh, 0, 271 RT_VOLUME_STEADY | RT_SIGNAL_METER | RT_CARD_ON); 272 DELAY(RT_SIGNAL_METER_DELAY); 273 ret = bus_space_read_1(iot, ioh, 0); 274 275 switch (ret) { 276 case 0xFD: 277 ret = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO; 278 break; 279 case 0xFF: 280 ret = 0; 281 break; 282 default: 283 ret = RADIO_INFO_SIGNAL; 284 break; 285 } 286 287 return ret; 288 } 289 290 /* 291 * Convert volume to hardware representation. 292 */ 293 u_int8_t 294 rt_conv_vol(u_int8_t vol) 295 { 296 if (vol < VOLUME_RATIO(1)) 297 return 0; 298 else if (vol >= VOLUME_RATIO(1) && vol < VOLUME_RATIO(2)) 299 return 1; 300 else if (vol >= VOLUME_RATIO(2) && vol < VOLUME_RATIO(3)) 301 return 2; 302 else if (vol >= VOLUME_RATIO(3) && vol < VOLUME_RATIO(4)) 303 return 3; 304 else 305 return 4; 306 } 307 308 /* 309 * Convert volume from hardware representation 310 */ 311 u_int8_t 312 rt_unconv_vol(u_int8_t vol) 313 { 314 return VOLUME_RATIO(vol); 315 } 316 317 int 318 rt_find(bus_space_tag_t iot, bus_space_handle_t ioh) 319 { 320 struct rt_softc sc; 321 #if 0 322 u_int i, scanres = 0; 323 #endif 324 325 sc.lm.iot = iot; 326 sc.lm.ioh = ioh; 327 sc.lm.offset = 0; 328 sc.lm.wzcl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_OFF; 329 sc.lm.wzch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_OFF; 330 sc.lm.wocl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_ON; 331 sc.lm.woch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_ON; 332 sc.lm.initdata = 0; 333 sc.lm.rsetdata = RT_SIGNAL_METER; 334 sc.lm.init = rt_lm700x_init; 335 sc.lm.rset = rt_lm700x_rset; 336 sc.rf = LM700X_REF_050; 337 sc.mute = 0; 338 sc.stereo = LM700X_STEREO; 339 sc.vol = 0; 340 341 /* 342 * Scan whole FM range. If there is a card it'll 343 * respond on some frequency. 344 */ 345 return 0; 346 #if 0 347 for (i = MIN_FM_FREQ; !scanres && i < MAX_FM_FREQ; i += 10) { 348 rt_set_freq(&sc, i); 349 scanres += rt_state(iot, ioh); 350 } 351 352 return scanres; 353 #endif 354 } 355 356 void 357 rt_lm700x_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 358 u_int32_t data) 359 { 360 /* Do nothing */ 361 return; 362 } 363 364 void 365 rt_lm700x_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 366 u_int32_t data) 367 { 368 DELAY(1000); 369 bus_space_write_1(iot, ioh, off, RT_CARD_OFF | data); 370 DELAY(50000); 371 bus_space_write_1(iot, ioh, off, RT_VOLUME_STEADY | RT_CARD_ON | data); 372 } 373 374 int 375 rt_set_info(void *v, struct radio_info *ri) 376 { 377 struct rt_softc *sc = v; 378 379 sc->mute = ri->mute ? 1 : 0; 380 sc->vol = rt_conv_vol(ri->volume); 381 sc->stereo = ri->stereo ? LM700X_STEREO : LM700X_MONO; 382 sc->rf = lm700x_encode_ref(ri->rfreq); 383 384 rt_set_freq(sc, ri->freq); 385 rt_set_mute(sc, sc->vol); 386 387 return (0); 388 } 389 390 int 391 rt_get_info(void *v, struct radio_info *ri) 392 { 393 struct rt_softc *sc = v; 394 395 ri->mute = sc->mute; 396 ri->volume = rt_unconv_vol(sc->vol); 397 ri->stereo = sc->stereo == LM700X_STEREO ? 0 : 1; 398 ri->caps = RTRACK_CAPABILITIES; 399 ri->rfreq = lm700x_decode_ref(sc->rf); 400 ri->info = 3 & rt_state(sc->lm.iot, sc->lm.ioh); 401 ri->freq = sc->freq; 402 403 /* UNSUPPORTED */ 404 ri->lock = 0; 405 406 return (0); 407 } 408
Indexes created Mon Sep 22 10:09:38 GMT 2025