1 /* $NetBSD: aztech.c,v 1.17 2012/10/27 17:18:24 chs 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/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: aztech.c,v 1.17 2012/10/27 17:18:24 chs Exp $"); 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/proc.h> 47 #include <sys/errno.h> 48 #include <sys/ioctl.h> 49 #include <sys/device.h> 50 #include <sys/radioio.h> 51 52 #include <sys/bus.h> 53 54 #include <dev/isa/isavar.h> 55 #include <dev/ic/lm700x.h> 56 #include <dev/radio_if.h> 57 58 #define RF_25K 25 59 #define RF_50K 50 60 #define RF_100K 100 61 62 #define MAX_VOL 3 63 #define VOLUME_RATIO(x) (255 * x / MAX_VOL) 64 65 #define AZ_BASE_VALID(x) ((x == 0x350) || (x == 0x358)) 66 #define AZTECH_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \ 67 RADIO_CAPS_DETECT_SIGNAL | \ 68 RADIO_CAPS_SET_MONO | \ 69 RADIO_CAPS_REFERENCE_FREQ 70 71 #define AZ_WREN_ON (1 << 1) 72 #define AZ_WREN_OFF (0 << 1) 73 74 #define AZ_CLCK_ON (1 << 6) 75 #define AZ_CLCK_OFF (0 << 6) 76 77 #define AZ_DATA_ON (1 << 7) 78 #define AZ_DATA_OFF (0 << 7) 79 80 int az_probe(device_t, cfdata_t, void *); 81 void az_attach(device_t, device_t, void *); 82 83 int az_get_info(void *, struct radio_info *); 84 int az_set_info(void *, struct radio_info *); 85 86 const struct radio_hw_if az_hw_if = { 87 NULL, /* open */ 88 NULL, /* close */ 89 az_get_info, 90 az_set_info, 91 NULL 92 }; 93 94 struct az_softc { 95 int mute; 96 u_int8_t vol; 97 u_int32_t freq; 98 u_int32_t rf; 99 u_int32_t stereo; 100 101 struct lm700x_t lm; 102 }; 103 104 CFATTACH_DECL_NEW(az, sizeof(struct az_softc), 105 az_probe, az_attach, NULL, NULL); 106 107 u_int az_find(bus_space_tag_t, bus_space_handle_t); 108 void az_set_mute(struct az_softc *); 109 void az_set_freq(struct az_softc *, u_int32_t); 110 u_int8_t az_state(bus_space_tag_t, bus_space_handle_t); 111 112 void az_lm700x_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 113 void az_lm700x_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 114 115 u_int8_t az_conv_vol(u_int8_t); 116 u_int8_t az_unconv_vol(u_int8_t); 117 118 int 119 az_probe(device_t parent, cfdata_t cf, void *aux) 120 { 121 struct isa_attach_args *ia = aux; 122 bus_space_tag_t iot = ia->ia_iot; 123 bus_space_handle_t ioh; 124 u_int r; 125 int iosize = 1, iobase; 126 127 if (ISA_DIRECT_CONFIG(ia)) 128 return 0; 129 130 if (ia->ia_nio < 1) 131 return 0; 132 133 iobase = ia->ia_io[0].ir_addr; 134 135 if (!AZ_BASE_VALID(iobase)) { 136 printf("az: configured iobase 0x%x invalid", iobase); 137 return 0; 138 } 139 140 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 141 return 0; 142 143 r = az_find(iot, ioh); 144 145 bus_space_unmap(iot, ioh, iosize); 146 147 if (r != 0) { 148 ia->ia_nio = 1; 149 ia->ia_io[0].ir_size = iosize; 150 151 ia->ia_niomem = 0; 152 ia->ia_nirq = 0; 153 ia->ia_ndrq = 0; 154 155 return (1); 156 } 157 158 return (0); 159 } 160 161 void 162 az_attach(device_t parent, device_t self, void *aux) 163 { 164 struct az_softc *sc = device_private(self); 165 struct isa_attach_args *ia = aux; 166 167 sc->lm.iot = ia->ia_iot; 168 sc->rf = LM700X_REF_050; 169 sc->stereo = LM700X_STEREO; 170 sc->mute = 0; 171 sc->freq = MIN_FM_FREQ; 172 sc->vol = 0; 173 174 /* remap I/O */ 175 if (bus_space_map(sc->lm.iot, ia->ia_io[0].ir_addr, 176 ia->ia_io[0].ir_size, 0, &sc->lm.ioh)) 177 panic(": bus_space_map() of %s failed", device_xname(self)); 178 179 printf(": Aztech/PackardBell\n"); 180 181 /* Configure struct lm700x_t lm */ 182 sc->lm.offset = 0; 183 sc->lm.wzcl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_OFF; 184 sc->lm.wzch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_OFF; 185 sc->lm.wocl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_ON; 186 sc->lm.woch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_ON; 187 sc->lm.initdata = 0; 188 sc->lm.rsetdata = AZ_DATA_ON | AZ_CLCK_ON | AZ_WREN_OFF; 189 sc->lm.init = az_lm700x_init; 190 sc->lm.rset = az_lm700x_rset; 191 192 az_set_freq(sc, sc->freq); 193 194 radio_attach_mi(&az_hw_if, sc, self); 195 } 196 197 /* 198 * Mute the card 199 */ 200 void 201 az_set_mute(struct az_softc *sc) 202 { 203 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 204 sc->mute ? 0 : sc->vol); 205 delay(6); 206 bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0, 207 sc->mute ? 0 : sc->vol); 208 } 209 210 void 211 az_set_freq(struct az_softc *sc, u_int32_t nfreq) 212 { 213 u_int8_t vol; 214 u_int32_t reg; 215 216 vol = sc->mute ? 0 : sc->vol; 217 218 if (nfreq > MAX_FM_FREQ) 219 nfreq = MAX_FM_FREQ; 220 if (nfreq < MIN_FM_FREQ) 221 nfreq = MIN_FM_FREQ; 222 223 sc->freq = nfreq; 224 225 reg = lm700x_encode_freq(nfreq, sc->rf); 226 reg |= sc->stereo | sc->rf | LM700X_DIVIDER_FM; 227 228 lm700x_hardware_write(&sc->lm, reg, vol); 229 230 az_set_mute(sc); 231 } 232 233 /* 234 * Return state of the card - tuned/not tuned, mono/stereo 235 */ 236 u_int8_t 237 az_state(bus_space_tag_t iot, bus_space_handle_t ioh) 238 { 239 return (3 ^ bus_space_read_1(iot, ioh, 0)) & 3; 240 } 241 242 /* 243 * Convert volume to hardware representation. 244 * The card uses bits 00000x0x to set volume. 245 */ 246 u_int8_t 247 az_conv_vol(u_int8_t vol) 248 { 249 if (vol < VOLUME_RATIO(1)) 250 return 0; 251 else if (vol >= VOLUME_RATIO(1) && vol < VOLUME_RATIO(2)) 252 return 1; 253 else if (vol >= VOLUME_RATIO(2) && vol < VOLUME_RATIO(3)) 254 return 4; 255 else 256 return 5; 257 } 258 259 /* 260 * Convert volume from hardware representation 261 */ 262 u_int8_t 263 az_unconv_vol(u_int8_t vol) 264 { 265 switch (vol) { 266 case 0: 267 return VOLUME_RATIO(0); 268 case 1: 269 return VOLUME_RATIO(1); 270 case 4: 271 return VOLUME_RATIO(2); 272 } 273 return VOLUME_RATIO(3); 274 } 275 276 u_int 277 az_find(bus_space_tag_t iot, bus_space_handle_t ioh) 278 { 279 struct az_softc sc; 280 u_int i, scanres = 0; 281 282 sc.lm.iot = iot; 283 sc.lm.ioh = ioh; 284 sc.lm.offset = 0; 285 sc.lm.wzcl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_OFF; 286 sc.lm.wzch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_OFF; 287 sc.lm.wocl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_ON; 288 sc.lm.woch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_ON; 289 sc.lm.initdata = 0; 290 sc.lm.rsetdata = AZ_DATA_ON | AZ_CLCK_ON | AZ_WREN_OFF; 291 sc.lm.init = az_lm700x_init; 292 sc.lm.rset = az_lm700x_rset; 293 sc.rf = LM700X_REF_050; 294 sc.mute = 0; 295 sc.stereo = LM700X_STEREO; 296 sc.vol = 0; 297 298 /* 299 * Scan whole FM range. If there is a card it'll 300 * respond on some frequency. 301 */ 302 for (i = MIN_FM_FREQ; !scanres && i < MAX_FM_FREQ; i += 10) { 303 az_set_freq(&sc, i); 304 scanres += 3 - az_state(iot, ioh); 305 } 306 307 return scanres; 308 } 309 310 void 311 az_lm700x_init(bus_space_tag_t iot, bus_space_handle_t ioh, 312 bus_size_t off, u_int32_t data) 313 { 314 /* Do nothing */ 315 return; 316 } 317 318 void 319 az_lm700x_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 320 u_int32_t data) 321 { 322 bus_space_write_1(iot, ioh, off, data); 323 } 324 325 int 326 az_get_info(void *v, struct radio_info *ri) 327 { 328 struct az_softc *sc = v; 329 330 ri->mute = sc->mute; 331 ri->volume = az_unconv_vol(sc->vol); 332 ri->stereo = sc->stereo == LM700X_STEREO ? 1 : 0; 333 ri->caps = AZTECH_CAPABILITIES; 334 ri->rfreq = lm700x_decode_ref(sc->rf); 335 ri->info = az_state(sc->lm.iot, sc->lm.ioh); 336 ri->freq = sc->freq; 337 338 /* UNSUPPORTED */ 339 ri->lock = 0; 340 341 return (0); 342 } 343 344 int 345 az_set_info(void *v, struct radio_info *ri) 346 { 347 struct az_softc *sc = v; 348 349 sc->mute = ri->mute ? 1 : 0; 350 sc->vol = az_conv_vol(ri->volume); 351 sc->stereo = ri->stereo ? LM700X_STEREO : LM700X_MONO; 352 sc->rf = lm700x_encode_ref(ri->rfreq); 353 354 az_set_freq(sc, ri->freq); 355 az_set_mute(sc); 356 357 return (0); 358 } 359
Indexes created Sat Sep 20 22:09:52 GMT 2025