Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/radiotrack.c
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1 /* $NetBSD: radiotrack.c,v 1.9 2003/07/14 15:47:16 lukem 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@oganer.net>, 7 * Vladimir Popov <jumbo@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/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: radiotrack.c,v 1.9 2003/07/14 15:47:16 lukem Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/proc.h> 43 #include <sys/errno.h> 44 #include <sys/ioctl.h> 45 #include <sys/device.h> 46 #include <sys/radioio.h> 47 48 #include <machine/bus.h> 49 50 #include <dev/isa/isavar.h> 51 #include <dev/ic/lm700x.h> 52 #include <dev/radio_if.h> 53 54 #define RF_25K 25 55 #define RF_50K 50 56 #define RF_100K 100 57 58 #define MAX_VOL 5 /* XXX Find real value */ 59 #define VOLUME_RATIO(x) (255 * x / MAX_VOL) 60 61 #define RT_BASE_VALID(x) \ 62 ((x == 0x30C) || (x == 0x20C) || (x == 0x284) || (x == 0x384)) 63 64 #define CARD_RADIOTRACK 0x01 65 #define CARD_SF16FMI 0x02 66 #define CARD_UNKNOWN 0xFF 67 68 #define RTRACK_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \ 69 RADIO_CAPS_DETECT_SIGNAL | \ 70 RADIO_CAPS_SET_MONO | \ 71 RADIO_CAPS_REFERENCE_FREQ 72 73 #define RT_WREN_ON (1 << 0) 74 #define RT_WREN_OFF (0 << 0) 75 76 #define RT_CLCK_ON (1 << 1) 77 #define RT_CLCK_OFF (0 << 1) 78 79 #define RT_DATA_ON (1 << 2) 80 #define RT_DATA_OFF (0 << 2) 81 82 #define RT_CARD_ON (1 << 3) 83 #define RT_CARD_OFF (0 << 3) 84 85 #define RT_SIGNAL_METER (1 << 4) 86 #define RT_SIGNAL_METER_DELAY 150000 87 88 #define RT_VOLUME_DOWN (1 << 6) 89 #define RT_VOLUME_UP (2 << 6) 90 #define RT_VOLUME_STEADY (3 << 6) 91 #define RT_VOLUME_DELAY 100000 92 93 int rt_probe(struct device *, struct cfdata *, void *); 94 void rt_attach(struct device *, struct device * self, void *); 95 int rt_get_info(void *, struct radio_info *); 96 int rt_set_info(void *, struct radio_info *); 97 98 struct radio_hw_if rt_hw_if = { 99 NULL, /* open */ 100 NULL, /* close */ 101 rt_get_info, 102 rt_set_info, 103 NULL 104 }; 105 106 struct rt_softc { 107 struct device sc_dev; 108 109 int mute; 110 u_int8_t vol; 111 u_int8_t cardtype; 112 u_int32_t freq; 113 u_int32_t rf; 114 u_int32_t stereo; 115 116 struct lm700x_t lm; 117 }; 118 119 CFATTACH_DECL(rt, sizeof(struct rt_softc), 120 rt_probe, rt_attach, NULL, NULL); 121 122 int rt_find(bus_space_tag_t, bus_space_handle_t); 123 void rt_set_mute(struct rt_softc *, int); 124 void rt_set_freq(struct rt_softc *, u_int32_t); 125 u_int8_t rt_state(bus_space_tag_t, bus_space_handle_t); 126 127 void rt_lm700x_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 128 void rt_lm700x_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 129 130 u_int8_t rt_conv_vol(u_int8_t); 131 u_int8_t rt_unconv_vol(u_int8_t); 132 133 int 134 rt_probe(struct device *parent, struct cfdata *cf, void *aux) 135 { 136 struct isa_attach_args *ia = aux; 137 bus_space_tag_t iot = ia->ia_iot; 138 bus_space_handle_t ioh; 139 u_int r; 140 int iosize = 1, iobase; 141 142 if (ISA_DIRECT_CONFIG(ia)) 143 return 0; 144 145 if (ia->ia_nio < 1) 146 return (0); 147 148 iobase = ia->ia_io[0].ir_addr; 149 150 if (!RT_BASE_VALID(iobase)) { 151 printf("rt: configured iobase 0x%x invalid\n", iobase); 152 return 0; 153 } 154 155 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 156 return 0; 157 158 r = rt_find(iot, ioh); 159 160 bus_space_unmap(iot, ioh, iosize); 161 162 if (r != 0) { 163 ia->ia_nio = 1; 164 ia->ia_io[0].ir_size = iosize; 165 166 ia->ia_niomem = 0; 167 ia->ia_nirq = 0; 168 ia->ia_ndrq = 0; 169 170 return (1); 171 } 172 173 return (0); 174 } 175 176 void 177 rt_attach(struct device *parent, struct device *self, void *aux) 178 { 179 struct rt_softc *sc = (void *) self; 180 struct isa_attach_args *ia = aux; 181 182 sc->lm.iot = ia->ia_iot; 183 sc->rf = LM700X_REF_050; 184 sc->stereo = LM700X_STEREO; 185 sc->mute = 0; 186 sc->freq = MIN_FM_FREQ; 187 sc->vol = 0; 188 189 /* remap I/O */ 190 if (bus_space_map(sc->lm.iot, ia->ia_io[0].ir_addr, 191 ia->ia_io[0].ir_size, 0, &sc->lm.ioh)) 192 panic(": bus_space_map() of %s failed", sc->sc_dev.dv_xname); 193 194 switch (ia->ia_io[0].ir_addr) { 195 case 0x20C: 196 /* FALLTHROUGH */ 197 case 0x30C: 198 sc->cardtype = CARD_RADIOTRACK; 199 printf(": AIMS Lab Radiotrack or compatible\n"); 200 break; 201 case 0x284: 202 /* FALLTHROUGH */ 203 case 0x384: 204 sc->cardtype = CARD_SF16FMI; 205 printf(": SoundForte RadioX SF16-FMI\n"); 206 break; 207 default: 208 sc->cardtype = CARD_UNKNOWN; 209 printf(": Unknown card\n"); 210 break; 211 } 212 213 /* Configure struct lm700x_t lm */ 214 sc->lm.offset = 0; 215 sc->lm.wzcl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_OFF; 216 sc->lm.wzch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_OFF; 217 sc->lm.wocl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_ON; 218 sc->lm.woch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_ON; 219 sc->lm.initdata = 0; 220 sc->lm.rsetdata = RT_DATA_ON | RT_CLCK_ON | RT_WREN_OFF; 221 sc->lm.init = rt_lm700x_init; 222 sc->lm.rset = rt_lm700x_rset; 223 224 rt_set_freq(sc, sc->freq); 225 226 radio_attach_mi(&rt_hw_if, sc, &sc->sc_dev); 227 } 228 229 /* 230 * Mute the card 231 */ 232 void 233 rt_set_mute(struct rt_softc *sc, int vol) 234 { 235 int val; 236 237 if (sc->mute) { 238 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 239 RT_VOLUME_DOWN | RT_CARD_ON); 240 DELAY(MAX_VOL * RT_VOLUME_DELAY); 241 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 242 RT_VOLUME_STEADY | RT_CARD_ON); 243 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, RT_CARD_OFF); 244 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, RT_CARD_OFF); 245 } else { 246 val = sc->vol - vol; 247 if (val < 0) { 248 val *= -1; 249 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 250 RT_VOLUME_DOWN | RT_CARD_ON); 251 } else { 252 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 253 RT_VOLUME_UP | RT_CARD_ON); 254 } 255 DELAY(val * RT_VOLUME_DELAY); 256 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 257 RT_VOLUME_STEADY | RT_CARD_ON); 258 } 259 } 260 261 void 262 rt_set_freq(struct rt_softc *sc, u_int32_t nfreq) 263 { 264 u_int32_t reg; 265 266 if (nfreq > MAX_FM_FREQ) 267 nfreq = MAX_FM_FREQ; 268 if (nfreq < MIN_FM_FREQ) 269 nfreq = MIN_FM_FREQ; 270 271 sc->freq = nfreq; 272 273 reg = lm700x_encode_freq(nfreq, sc->rf); 274 reg |= sc->stereo | sc->rf | LM700X_DIVIDER_FM; 275 276 lm700x_hardware_write(&sc->lm, reg, RT_VOLUME_STEADY); 277 278 rt_set_mute(sc, sc->vol); 279 } 280 281 /* 282 * Return state of the card - tuned/not tuned, mono/stereo 283 */ 284 u_int8_t 285 rt_state(bus_space_tag_t iot, bus_space_handle_t ioh) 286 { 287 u_int8_t ret; 288 289 bus_space_write_1(iot, ioh, 0, 290 RT_VOLUME_STEADY | RT_SIGNAL_METER | RT_CARD_ON); 291 DELAY(RT_SIGNAL_METER_DELAY); 292 ret = bus_space_read_1(iot, ioh, 0); 293 294 switch (ret) { 295 case 0xFD: 296 ret = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO; 297 break; 298 case 0xFF: 299 ret = 0; 300 break; 301 default: 302 ret = RADIO_INFO_SIGNAL; 303 break; 304 } 305 306 return ret; 307 } 308 309 /* 310 * Convert volume to hardware representation. 311 */ 312 u_int8_t 313 rt_conv_vol(u_int8_t vol) 314 { 315 if (vol < VOLUME_RATIO(1)) 316 return 0; 317 else if (vol >= VOLUME_RATIO(1) && vol < VOLUME_RATIO(2)) 318 return 1; 319 else if (vol >= VOLUME_RATIO(2) && vol < VOLUME_RATIO(3)) 320 return 2; 321 else if (vol >= VOLUME_RATIO(3) && vol < VOLUME_RATIO(4)) 322 return 3; 323 else 324 return 4; 325 } 326 327 /* 328 * Convert volume from hardware representation 329 */ 330 u_int8_t 331 rt_unconv_vol(u_int8_t vol) 332 { 333 return VOLUME_RATIO(vol); 334 } 335 336 int 337 rt_find(bus_space_tag_t iot, bus_space_handle_t ioh) 338 { 339 struct rt_softc sc; 340 #if 0 341 u_int i, scanres = 0; 342 #endif 343 344 sc.lm.iot = iot; 345 sc.lm.ioh = ioh; 346 sc.lm.offset = 0; 347 sc.lm.wzcl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_OFF; 348 sc.lm.wzch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_OFF; 349 sc.lm.wocl = RT_WREN_ON | RT_CLCK_OFF | RT_DATA_ON; 350 sc.lm.woch = RT_WREN_ON | RT_CLCK_ON | RT_DATA_ON; 351 sc.lm.initdata = 0; 352 sc.lm.rsetdata = RT_SIGNAL_METER; 353 sc.lm.init = rt_lm700x_init; 354 sc.lm.rset = rt_lm700x_rset; 355 sc.rf = LM700X_REF_050; 356 sc.mute = 0; 357 sc.stereo = LM700X_STEREO; 358 sc.vol = 0; 359 360 /* 361 * Scan whole FM range. If there is a card it'll 362 * respond on some frequency. 363 */ 364 return 0; 365 #if 0 366 for (i = MIN_FM_FREQ; !scanres && i < MAX_FM_FREQ; i += 10) { 367 rt_set_freq(&sc, i); 368 scanres += rt_state(iot, ioh); 369 } 370 371 return scanres; 372 #endif 373 } 374 375 void 376 rt_lm700x_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 377 u_int32_t data) 378 { 379 /* Do nothing */ 380 return; 381 } 382 383 void 384 rt_lm700x_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 385 u_int32_t data) 386 { 387 DELAY(1000); 388 bus_space_write_1(iot, ioh, off, RT_CARD_OFF | data); 389 DELAY(50000); 390 bus_space_write_1(iot, ioh, off, RT_VOLUME_STEADY | RT_CARD_ON | data); 391 } 392 393 int 394 rt_set_info(void *v, struct radio_info *ri) 395 { 396 struct rt_softc *sc = v; 397 398 sc->mute = ri->mute ? 1 : 0; 399 sc->vol = rt_conv_vol(ri->volume); 400 sc->stereo = ri->stereo ? LM700X_STEREO : LM700X_MONO; 401 sc->rf = lm700x_encode_ref(ri->rfreq); 402 403 rt_set_freq(sc, ri->freq); 404 rt_set_mute(sc, sc->vol); 405 406 return (0); 407 } 408 409 int 410 rt_get_info(void *v, struct radio_info *ri) 411 { 412 struct rt_softc *sc = v; 413 414 ri->mute = sc->mute; 415 ri->volume = rt_unconv_vol(sc->vol); 416 ri->stereo = sc->stereo == LM700X_STEREO ? 0 : 1; 417 ri->caps = RTRACK_CAPABILITIES; 418 ri->rfreq = lm700x_decode_ref(sc->rf); 419 ri->info = 3 & rt_state(sc->lm.iot, sc->lm.ioh); 420 ri->freq = sc->freq; 421 422 /* UNSUPPORTED */ 423 ri->lock = 0; 424 425 return (0); 426 }
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