radiotrack.c revision 1.5
1 /* $NetBSD: radiotrack.c,v 1.5 2002/01/07 21:47:14 thorpej 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 u_int r; 138 int iosize = 1, iobase; 139 140 if (ISA_DIRECT_CONFIG(ia)) 141 return 0; 142 143 if (ia->ia_nio < 1) 144 return (0); 145 146 iobase = ia->ia_io[0].ir_addr; 147 148 if (!RT_BASE_VALID(iobase)) { 149 printf("rt: configured iobase 0x%x invalid\n", iobase); 150 return 0; 151 } 152 153 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 154 return 0; 155 156 r = rt_find(iot, ioh); 157 158 bus_space_unmap(iot, ioh, iosize); 159 160 if (r != 0) { 161 ia->ia_nio = 1; 162 ia->ia_io[0].ir_size = iosize; 163 164 ia->ia_niomem = 0; 165 ia->ia_nirq = 0; 166 ia->ia_ndrq = 0; 167 168 return (1); 169 } 170 171 return (0); 172 } 173 174 void 175 rt_attach(struct device *parent, struct device *self, void *aux) 176 { 177 struct rt_softc *sc = (void *) self; 178 struct isa_attach_args *ia = aux; 179 180 sc->lm.iot = ia->ia_iot; 181 sc->rf = LM700X_REF_050; 182 sc->stereo = LM700X_STEREO; 183 sc->mute = 0; 184 sc->freq = MIN_FM_FREQ; 185 sc->vol = 0; 186 187 /* remap I/O */ 188 if (bus_space_map(sc->lm.iot, ia->ia_io[0].ir_addr, 189 ia->ia_io[0].ir_size, 0, &sc->lm.ioh)) 190 panic(": bus_space_map() of %s failed", sc->sc_dev.dv_xname); 191 192 switch (ia->ia_io[0].ir_addr) { 193 case 0x20C: 194 /* FALLTHROUGH */ 195 case 0x30C: 196 sc->cardtype = CARD_RADIOTRACK; 197 printf(": AIMS Lab Radiotrack or compatible\n"); 198 break; 199 case 0x284: 200 /* FALLTHROUGH */ 201 case 0x384: 202 sc->cardtype = CARD_SF16FMI; 203 printf(": SoundForte RadioX SF16-FMI\n"); 204 break; 205 default: 206 sc->cardtype = CARD_UNKNOWN; 207 printf(": Unknown card\n"); 208 break; 209 } 210 211 /* Configure struct lm700x_t lm */ 212 sc->lm.offset = 0; 213 sc->lm.wzcl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_OFF; 214 sc->lm.wzch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_OFF; 215 sc->lm.wocl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_ON; 216 sc->lm.woch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_ON; 217 sc->lm.initdata = 0; 218 sc->lm.rsetdata = RT_DATA_ON | RT_CLCK_ON | RT_WREN_OFF; 219 sc->lm.init = rt_lm700x_init; 220 sc->lm.rset = rt_lm700x_rset; 221 222 rt_set_freq(sc, sc->freq); 223 224 radio_attach_mi(&rt_hw_if, sc, &sc->sc_dev); 225 } 226 227 /* 228 * Mute the card 229 */ 230 void 231 rt_set_mute(struct rt_softc *sc, int vol) 232 { 233 int val; 234 235 if (sc->mute) { 236 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 237 RT_VOLUME_DOWN | RT_CARD_ON); 238 DELAY(MAX_VOL * RT_VOLUME_DELAY); 239 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 240 RT_VOLUME_STEADY | RT_CARD_ON); 241 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, RT_CARD_OFF); 242 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, RT_CARD_OFF); 243 } else { 244 val = sc->vol - vol; 245 if (val < 0) { 246 val *= -1; 247 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 248 RT_VOLUME_DOWN | RT_CARD_ON); 249 } else { 250 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 251 RT_VOLUME_UP | RT_CARD_ON); 252 } 253 DELAY(val * RT_VOLUME_DELAY); 254 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 255 RT_VOLUME_STEADY | RT_CARD_ON); 256 } 257 } 258 259 void 260 rt_set_freq(struct rt_softc *sc, u_int32_t nfreq) 261 { 262 u_int32_t reg; 263 264 if (nfreq > MAX_FM_FREQ) 265 nfreq = MAX_FM_FREQ; 266 if (nfreq < MIN_FM_FREQ) 267 nfreq = MIN_FM_FREQ; 268 269 sc->freq = nfreq; 270 271 reg = lm700x_encode_freq(nfreq, sc->rf); 272 reg |= sc->stereo | sc->rf | LM700X_DIVIDER_FM; 273 274 lm700x_hardware_write(&sc->lm, reg, RT_VOLUME_STEADY); 275 276 rt_set_mute(sc, sc->vol); 277 } 278 279 /* 280 * Return state of the card - tuned/not tuned, mono/stereo 281 */ 282 u_int8_t 283 rt_state(bus_space_tag_t iot, bus_space_handle_t ioh) 284 { 285 u_int8_t ret; 286 287 bus_space_write_1(iot, ioh, 0, 288 RT_VOLUME_STEADY | RT_SIGNAL_METER | RT_CARD_ON); 289 DELAY(RT_SIGNAL_METER_DELAY); 290 ret = bus_space_read_1(iot, ioh, 0); 291 292 switch (ret) { 293 case 0xFD: 294 ret = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO; 295 break; 296 case 0xFF: 297 ret = 0; 298 break; 299 default: 300 ret = RADIO_INFO_SIGNAL; 301 break; 302 } 303 304 return ret; 305 } 306 307 /* 308 * Convert volume to hardware representation. 309 */ 310 u_int8_t 311 rt_conv_vol(u_int8_t vol) 312 { 313 if (vol < VOLUME_RATIO(1)) 314 return 0; 315 else if (vol >= VOLUME_RATIO(1) && vol < VOLUME_RATIO(2)) 316 return 1; 317 else if (vol >= VOLUME_RATIO(2) && vol < VOLUME_RATIO(3)) 318 return 2; 319 else if (vol >= VOLUME_RATIO(3) && vol < VOLUME_RATIO(4)) 320 return 3; 321 else 322 return 4; 323 } 324 325 /* 326 * Convert volume from hardware representation 327 */ 328 u_int8_t 329 rt_unconv_vol(u_int8_t vol) 330 { 331 return VOLUME_RATIO(vol); 332 } 333 334 int 335 rt_find(bus_space_tag_t iot, bus_space_handle_t ioh) 336 { 337 struct rt_softc sc; 338 #if 0 339 u_int i, scanres = 0; 340 #endif 341 342 sc.lm.iot = iot; 343 sc.lm.ioh = ioh; 344 sc.lm.offset = 0; 345 sc.lm.wzcl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_OFF; 346 sc.lm.wzch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_OFF; 347 sc.lm.wocl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_ON; 348 sc.lm.woch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_ON; 349 sc.lm.initdata = 0; 350 sc.lm.rsetdata = RT_SIGNAL_METER; 351 sc.lm.init = rt_lm700x_init; 352 sc.lm.rset = rt_lm700x_rset; 353 sc.rf = LM700X_REF_050; 354 sc.mute = 0; 355 sc.stereo = LM700X_STEREO; 356 sc.vol = 0; 357 358 /* 359 * Scan whole FM range. If there is a card it'll 360 * respond on some frequency. 361 */ 362 return 0; 363 #if 0 364 for (i = MIN_FM_FREQ; !scanres && i < MAX_FM_FREQ; i += 10) { 365 rt_set_freq(&sc, i); 366 scanres += rt_state(iot, ioh); 367 } 368 369 return scanres; 370 #endif 371 } 372 373 void 374 rt_lm700x_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 375 u_int32_t data) 376 { 377 /* Do nothing */ 378 return; 379 } 380 381 void 382 rt_lm700x_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 383 u_int32_t data) 384 { 385 DELAY(1000); 386 bus_space_write_1(iot, ioh, off, RT_CARD_OFF | data); 387 DELAY(50000); 388 bus_space_write_1(iot, ioh, off, RT_VOLUME_STEADY | RT_CARD_ON | data); 389 } 390 391 int 392 rt_set_info(void *v, struct radio_info *ri) 393 { 394 struct rt_softc *sc = v; 395 396 sc->mute = ri->mute ? 1 : 0; 397 sc->vol = rt_conv_vol(ri->volume); 398 sc->stereo = ri->stereo ? LM700X_STEREO : LM700X_MONO; 399 sc->rf = lm700x_encode_ref(ri->rfreq); 400 401 rt_set_freq(sc, ri->freq); 402 rt_set_mute(sc, sc->vol); 403 404 return (0); 405 } 406 407 int 408 rt_get_info(void *v, struct radio_info *ri) 409 { 410 struct rt_softc *sc = v; 411 412 ri->mute = sc->mute; 413 ri->volume = rt_unconv_vol(sc->vol); 414 ri->stereo = sc->stereo == LM700X_STEREO ? 0 : 1; 415 ri->caps = RTRACK_CAPABILITIES; 416 ri->rfreq = lm700x_decode_ref(sc->rf); 417 ri->info = 3 & rt_state(sc->lm.iot, sc->lm.ioh); 418 ri->freq = sc->freq; 419 420 /* UNSUPPORTED */ 421 ri->lock = 0; 422 423 return (0); 424 } 425
Indexes created Mon Sep 22 13:09:51 GMT 2025