aztech.c revision 1.6
1 /* $NetBSD: aztech.c,v 1.6 2002/10/02 02:09:16 thorpej Exp $ */ 2 /* $OpenBSD: aztech.c,v 1.2 2001/12/05 10:27:06 mickey Exp $ */ 3 /* $RuOBSD: aztech.c,v 1.11 2001/10/20 13:23:47 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 /* Aztech/PackardBell FM Radio Card device driver */ 32 33 /* 34 * Sanyo LM7001J Direct PLL Frequency Synthesizer: 35 * ??? See http://www.redsword.com/tjacobs/geeb/fmcard.htm 36 * 37 * Philips TEA5712T AM/FM Stereo DTS Radio: 38 * http://www.semiconductors.philips.com/pip/TEA5712 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/proc.h> 44 #include <sys/errno.h> 45 #include <sys/ioctl.h> 46 #include <sys/device.h> 47 #include <sys/radioio.h> 48 49 #include <machine/bus.h> 50 51 #include <dev/isa/isavar.h> 52 #include <dev/ic/lm700x.h> 53 #include <dev/radio_if.h> 54 55 #define RF_25K 25 56 #define RF_50K 50 57 #define RF_100K 100 58 59 #define MAX_VOL 3 60 #define VOLUME_RATIO(x) (255 * x / MAX_VOL) 61 62 #define AZ_BASE_VALID(x) ((x == 0x350) || (x == 0x358)) 63 #define AZTECH_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \ 64 RADIO_CAPS_DETECT_SIGNAL | \ 65 RADIO_CAPS_SET_MONO | \ 66 RADIO_CAPS_REFERENCE_FREQ 67 68 #define AZ_WREN_ON (1 << 1) 69 #define AZ_WREN_OFF (0 << 1) 70 71 #define AZ_CLCK_ON (1 << 6) 72 #define AZ_CLCK_OFF (0 << 6) 73 74 #define AZ_DATA_ON (1 << 7) 75 #define AZ_DATA_OFF (0 << 7) 76 77 int az_probe(struct device *, struct cfdata *, void *); 78 void az_attach(struct device *, struct device * self, void *); 79 80 int az_get_info(void *, struct radio_info *); 81 int az_set_info(void *, struct radio_info *); 82 83 struct radio_hw_if az_hw_if = { 84 NULL, /* open */ 85 NULL, /* close */ 86 az_get_info, 87 az_set_info, 88 NULL 89 }; 90 91 struct az_softc { 92 struct device sc_dev; 93 94 int mute; 95 u_int8_t vol; 96 u_int32_t freq; 97 u_int32_t rf; 98 u_int32_t stereo; 99 100 struct lm700x_t lm; 101 }; 102 103 CFATTACH_DECL(az, sizeof(struct az_softc), 104 az_probe, az_attach, NULL, NULL); 105 106 u_int az_find(bus_space_tag_t, bus_space_handle_t); 107 void az_set_mute(struct az_softc *); 108 void az_set_freq(struct az_softc *, u_int32_t); 109 u_int8_t az_state(bus_space_tag_t, bus_space_handle_t); 110 111 void az_lm700x_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 112 void az_lm700x_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 113 114 u_int8_t az_conv_vol(u_int8_t); 115 u_int8_t az_unconv_vol(u_int8_t); 116 117 int 118 az_probe(struct device *parent, struct cfdata *cf, void *aux) 119 { 120 struct isa_attach_args *ia = aux; 121 bus_space_tag_t iot = ia->ia_iot; 122 bus_space_handle_t ioh; 123 u_int r; 124 int iosize = 1, iobase; 125 126 if (ISA_DIRECT_CONFIG(ia)) 127 return 0; 128 129 if (ia->ia_nio < 1) 130 return 0; 131 132 iobase = ia->ia_io[0].ir_addr; 133 134 if (!AZ_BASE_VALID(iobase)) { 135 printf("az: configured iobase 0x%x invalid", iobase); 136 return 0; 137 } 138 139 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 140 return 0; 141 142 r = az_find(iot, ioh); 143 144 bus_space_unmap(iot, ioh, iosize); 145 146 if (r != 0) { 147 ia->ia_nio = 1; 148 ia->ia_io[0].ir_size = iosize; 149 150 ia->ia_niomem = 0; 151 ia->ia_nirq = 0; 152 ia->ia_ndrq = 0; 153 154 return (1); 155 } 156 157 return (0); 158 } 159 160 void 161 az_attach(struct device *parent, struct device *self, void *aux) 162 { 163 struct az_softc *sc = (void *)self; 164 struct isa_attach_args *ia = aux; 165 166 sc->lm.iot = ia->ia_iot; 167 sc->rf = LM700X_REF_050; 168 sc->stereo = LM700X_STEREO; 169 sc->mute = 0; 170 sc->freq = MIN_FM_FREQ; 171 sc->vol = 0; 172 173 /* remap I/O */ 174 if (bus_space_map(sc->lm.iot, ia->ia_io[0].ir_addr, 175 ia->ia_io[0].ir_size, 0, &sc->lm.ioh)) 176 panic(": bus_space_map() of %s failed", sc->sc_dev.dv_xname); 177 178 printf(": Aztech/PackardBell\n"); 179 180 /* Configure struct lm700x_t lm */ 181 sc->lm.offset = 0; 182 sc->lm.wzcl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_OFF; 183 sc->lm.wzch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_OFF; 184 sc->lm.wocl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_ON; 185 sc->lm.woch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_ON; 186 sc->lm.initdata = 0; 187 sc->lm.rsetdata = AZ_DATA_ON | AZ_CLCK_ON | AZ_WREN_OFF; 188 sc->lm.init = az_lm700x_init; 189 sc->lm.rset = az_lm700x_rset; 190 191 az_set_freq(sc, sc->freq); 192 193 radio_attach_mi(&az_hw_if, sc, &sc->sc_dev); 194 } 195 196 /* 197 * Mute the card 198 */ 199 void 200 az_set_mute(struct az_softc *sc) 201 { 202 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 203 sc->mute ? 0 : sc->vol); 204 delay(6); 205 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 206 sc->mute ? 0 : sc->vol); 207 } 208 209 void 210 az_set_freq(struct az_softc *sc, u_int32_t nfreq) 211 { 212 u_int8_t vol; 213 u_int32_t reg; 214 215 vol = sc->mute ? 0 : sc->vol; 216 217 if (nfreq > MAX_FM_FREQ) 218 nfreq = MAX_FM_FREQ; 219 if (nfreq < MIN_FM_FREQ) 220 nfreq = MIN_FM_FREQ; 221 222 sc->freq = nfreq; 223 224 reg = lm700x_encode_freq(nfreq, sc->rf); 225 reg |= sc->stereo | sc->rf | LM700X_DIVIDER_FM; 226 227 lm700x_hardware_write(&sc->lm, reg, vol); 228 229 az_set_mute(sc); 230 } 231 232 /* 233 * Return state of the card - tuned/not tuned, mono/stereo 234 */ 235 u_int8_t 236 az_state(bus_space_tag_t iot, bus_space_handle_t ioh) 237 { 238 return (3 ^ bus_space_read_1(iot, ioh, 0)) & 3; 239 } 240 241 /* 242 * Convert volume to hardware representation. 243 * The card uses bits 00000x0x to set volume. 244 */ 245 u_int8_t 246 az_conv_vol(u_int8_t vol) 247 { 248 if (vol < VOLUME_RATIO(1)) 249 return 0; 250 else if (vol >= VOLUME_RATIO(1) && vol < VOLUME_RATIO(2)) 251 return 1; 252 else if (vol >= VOLUME_RATIO(2) && vol < VOLUME_RATIO(3)) 253 return 4; 254 else 255 return 5; 256 } 257 258 /* 259 * Convert volume from hardware representation 260 */ 261 u_int8_t 262 az_unconv_vol(u_int8_t vol) 263 { 264 switch (vol) { 265 case 0: 266 return VOLUME_RATIO(0); 267 case 1: 268 return VOLUME_RATIO(1); 269 case 4: 270 return VOLUME_RATIO(2); 271 } 272 return VOLUME_RATIO(3); 273 } 274 275 u_int 276 az_find(bus_space_tag_t iot, bus_space_handle_t ioh) 277 { 278 struct az_softc sc; 279 u_int i, scanres = 0; 280 281 sc.lm.iot = iot; 282 sc.lm.ioh = ioh; 283 sc.lm.offset = 0; 284 sc.lm.wzcl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_OFF; 285 sc.lm.wzch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_OFF; 286 sc.lm.wocl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_ON; 287 sc.lm.woch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_ON; 288 sc.lm.initdata = 0; 289 sc.lm.rsetdata = AZ_DATA_ON | AZ_CLCK_ON | AZ_WREN_OFF; 290 sc.lm.init = az_lm700x_init; 291 sc.lm.rset = az_lm700x_rset; 292 sc.rf = LM700X_REF_050; 293 sc.mute = 0; 294 sc.stereo = LM700X_STEREO; 295 sc.vol = 0; 296 297 /* 298 * Scan whole FM range. If there is a card it'll 299 * respond on some frequency. 300 */ 301 for (i = MIN_FM_FREQ; !scanres && i < MAX_FM_FREQ; i += 10) { 302 az_set_freq(&sc, i); 303 scanres += 3 - az_state(iot, ioh); 304 } 305 306 return scanres; 307 } 308 309 void 310 az_lm700x_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 311 u_int32_t data) 312 { 313 /* Do nothing */ 314 return; 315 } 316 317 void 318 az_lm700x_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 319 u_int32_t data) 320 { 321 bus_space_write_1(iot, ioh, off, data); 322 } 323 324 int 325 az_get_info(void *v, struct radio_info *ri) 326 { 327 struct az_softc *sc = v; 328 329 ri->mute = sc->mute; 330 ri->volume = az_unconv_vol(sc->vol); 331 ri->stereo = sc->stereo == LM700X_STEREO ? 1 : 0; 332 ri->caps = AZTECH_CAPABILITIES; 333 ri->rfreq = lm700x_decode_ref(sc->rf); 334 ri->info = az_state(sc->lm.iot, sc->lm.ioh); 335 ri->freq = sc->freq; 336 337 /* UNSUPPORTED */ 338 ri->lock = 0; 339 340 return (0); 341 } 342 343 int 344 az_set_info(void *v, struct radio_info *ri) 345 { 346 struct az_softc *sc = v; 347 348 sc->mute = ri->mute ? 1 : 0; 349 sc->vol = az_conv_vol(ri->volume); 350 sc->stereo = ri->stereo ? LM700X_STEREO : LM700X_MONO; 351 sc->rf = lm700x_encode_ref(ri->rfreq); 352 353 az_set_freq(sc, ri->freq); 354 az_set_mute(sc); 355 356 return (0); 357 } 358
Indexes created Mon Sep 22 10:09:38 GMT 2025