radiotrack2.c revision 1.4
1 /* $NetBSD: radiotrack2.c,v 1.4 2002/01/07 21:47:14 thorpej Exp $ */ 2 /* $OpenBSD: radiotrack2.c,v 1.1 2001/12/05 10:27:06 mickey Exp $ */ 3 /* $RuOBSD: radiotrack2.c,v 1.2 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 II FM Radio Card device driver */ 32 33 /* 34 * Philips TEA5757H AM/FM Self Tuned Radio: 35 * http://www.semiconductors.philips.com/pip/TEA5757H 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/proc.h> 41 #include <sys/errno.h> 42 #include <sys/ioctl.h> 43 #include <sys/device.h> 44 #include <sys/radioio.h> 45 46 #include <dev/isa/isavar.h> 47 #include <dev/radio_if.h> 48 #include <dev/ic/tea5757.h> 49 50 #define RTII_BASE_VALID(x) ((x == 0x20C) || (x == 0x30C)) 51 #define RTII_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \ 52 RADIO_CAPS_DETECT_SIGNAL | \ 53 RADIO_CAPS_SET_MONO | \ 54 RADIO_CAPS_LOCK_SENSITIVITY | \ 55 RADIO_CAPS_HW_AFC | \ 56 RADIO_CAPS_HW_SEARCH 57 58 #if 0 59 #define RTII_SIGNAL (1 << 3) 60 #define RTII_STEREO (1 << 3) 61 #endif /* 0 */ 62 63 #define RTII_MUTE 0x01 64 #define RTII_UNMUTE 0x00 65 66 #define RTII_RESET 0xC8 67 68 #define RTII_DATA_ON (1 << 2) 69 #define RTII_DATA_OFF (0 << 2) 70 71 #define RTII_CLCK_ON (1 << 1) 72 #define RTII_CLCK_OFF (0 << 1) 73 74 #define RTII_WREN_ON (0 << 0) 75 #define RTII_WREN_OFF (1 << 0) 76 77 #define RTII_READ_CLOCK_LOW (RTII_DATA_ON | RTII_CLCK_OFF | RTII_WREN_OFF) 78 #define RTII_READ_CLOCK_HIGH (RTII_DATA_ON | RTII_CLCK_ON | RTII_WREN_OFF) 79 80 int rtii_probe(struct device *, struct cfdata *, void *); 81 void rtii_attach(struct device *, struct device * self, void *); 82 83 int rtii_get_info(void *, struct radio_info *); 84 int rtii_set_info(void *, struct radio_info *); 85 int rtii_search(void *, int); 86 87 /* define our interface to the higher level radio driver */ 88 struct radio_hw_if rtii_hw_if = { 89 NULL, /* open */ 90 NULL, /* close */ 91 rtii_get_info, 92 rtii_set_info, 93 rtii_search 94 }; 95 96 struct rtii_softc { 97 struct device dev; 98 99 u_int32_t freq; 100 u_int32_t stereo; 101 u_int32_t lock; 102 u_int8_t vol; 103 int mute; 104 105 struct tea5757_t tea; 106 }; 107 108 struct cfattach rtii_ca = { 109 sizeof(struct rtii_softc), rtii_probe, rtii_attach 110 }; 111 112 void rtii_set_mute(struct rtii_softc *); 113 int rtii_find(bus_space_tag_t, bus_space_handle_t); 114 115 u_int32_t rtii_hw_read(bus_space_tag_t, bus_space_handle_t, bus_size_t); 116 117 void rtii_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 118 void rtii_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 119 void rtii_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int); 120 121 int 122 rtii_probe(struct device *parent, struct cfdata *cf, void *aux) 123 { 124 struct isa_attach_args *ia = aux; 125 bus_space_tag_t iot = ia->ia_iot; 126 bus_space_handle_t ioh; 127 u_int r; 128 int iosize = 1, iobase; 129 130 if (ISA_DIRECT_CONFIG(ia)) 131 return 0; 132 133 if (ia->ia_nio < 1) 134 return 0; 135 136 iobase = ia->ia_io[0].ir_addr; 137 138 if (!RTII_BASE_VALID(iobase)) { 139 printf("rtii: configured iobase 0x%x invalid\n", iobase); 140 return 0; 141 } 142 143 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 144 return 0; 145 146 r = rtii_find(iot, ioh); 147 148 bus_space_unmap(iot, ioh, iosize); 149 150 if (r != 0) { 151 ia->ia_nio = 1; 152 ia->ia_io[0].ir_size = iosize; 153 154 ia->ia_niomem = 0; 155 ia->ia_nirq = 0; 156 ia->ia_ndrq = 0; 157 158 return (1); 159 } 160 161 return (0); 162 } 163 164 void 165 rtii_attach(struct device *parent, struct device *self, void *aux) 166 { 167 struct rtii_softc *sc = (void *) self; 168 struct isa_attach_args *ia = aux; 169 170 sc->tea.iot = ia->ia_iot; 171 sc->mute = 0; 172 sc->vol = 0; 173 sc->freq = MIN_FM_FREQ; 174 sc->stereo = TEA5757_STEREO; 175 sc->lock = TEA5757_S030; 176 177 /* remap I/O */ 178 if (bus_space_map(sc->tea.iot, ia->ia_io[0].ir_addr, 179 ia->ia_io[0].ir_size, 0, &sc->tea.ioh)) 180 panic("rtiiattach: bus_space_map() failed"); 181 182 sc->tea.offset = 0; 183 184 sc->tea.init = rtii_init; 185 sc->tea.rset = rtii_rset; 186 sc->tea.write_bit = rtii_write_bit; 187 sc->tea.read = rtii_hw_read; 188 189 printf(": AIMS Lab Radiotrack II\n"); 190 tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq); 191 rtii_set_mute(sc); 192 193 radio_attach_mi(&rtii_hw_if, sc, &sc->dev); 194 } 195 196 /* 197 * Mute/unmute the card 198 */ 199 void 200 rtii_set_mute(struct rtii_softc *sc) 201 { 202 u_int8_t mute; 203 204 mute = (sc->mute || !sc->vol) ? RTII_MUTE : RTII_UNMUTE; 205 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 206 DELAY(6); 207 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 208 } 209 210 void 211 rtii_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 212 { 213 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF); 214 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON); 215 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON); 216 } 217 218 void 219 rtii_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 220 { 221 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF); 222 } 223 224 int 225 rtii_find(bus_space_tag_t iot, bus_space_handle_t ioh) 226 { 227 struct rtii_softc sc; 228 u_int32_t freq; 229 230 sc.tea.iot = iot; 231 sc.tea.ioh = ioh; 232 sc.tea.offset = 0; 233 sc.tea.init = rtii_init; 234 sc.tea.rset = rtii_rset; 235 sc.tea.write_bit = rtii_write_bit; 236 sc.tea.read = rtii_hw_read; 237 sc.lock = TEA5757_S030; 238 sc.stereo = TEA5757_STEREO; 239 240 /* 241 * Let's try to write and read a frequency. 242 * If the written and read frequencies are 243 * the same then success. 244 */ 245 sc.freq = MIN_FM_FREQ; 246 tea5757_set_freq(&sc.tea, sc.stereo, sc.lock, sc.freq); 247 rtii_set_mute(&sc); 248 freq = rtii_hw_read(iot, ioh, sc.tea.offset); 249 if (tea5757_decode_freq(freq) == sc.freq) 250 return 1; 251 252 return 0; 253 } 254 255 void 256 rtii_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) 257 { 258 u_int8_t data; 259 260 data = bit ? RTII_DATA_ON : RTII_DATA_OFF; 261 262 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data); 263 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_ON | data); 264 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data); 265 } 266 267 u_int32_t 268 rtii_hw_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) 269 { 270 u_int8_t i; 271 u_int32_t res = 0; 272 273 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW); 274 DELAY(6); 275 276 i = 24; 277 while ( i-- ) { 278 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_HIGH); 279 DELAY(6); 280 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW); 281 res |= bus_space_read_1(iot, ioh, off) & RTII_DATA_ON ? 1 : 0; 282 DELAY(6); 283 res <<= 1; 284 } 285 286 return (res & (TEA5757_DATA | TEA5757_FREQ)) >> 1; 287 } 288 289 int 290 rtii_get_info(void *v, struct radio_info *ri) 291 { 292 struct rtii_softc *sc = v; 293 294 ri->mute = sc->mute; 295 ri->volume = sc->vol ? 255 : 0; 296 ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; 297 ri->caps = RTII_CAPABILITIES; 298 ri->rfreq = 0; 299 ri->lock = tea5757_decode_lock(sc->lock); 300 301 ri->freq = sc->freq = tea5757_decode_freq(rtii_hw_read(sc->tea.iot, 302 sc->tea.ioh, sc->tea.offset)); 303 304 switch (bus_space_read_1(sc->tea.iot, sc->tea.ioh, 0)) { 305 case 0xFD: 306 ri->info = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO; 307 break; 308 case 0xFF: 309 ri->info = 0; 310 break; 311 default: 312 ri->info = RADIO_INFO_SIGNAL; 313 } 314 315 return (0); 316 } 317 318 int 319 rtii_set_info(void *v, struct radio_info *ri) 320 { 321 struct rtii_softc *sc = v; 322 323 sc->mute = ri->mute ? 1 : 0; 324 sc->vol = ri->volume ? 255 : 0; 325 sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO; 326 sc->lock = tea5757_encode_lock(ri->lock); 327 ri->freq = sc->freq = tea5757_set_freq(&sc->tea, 328 sc->lock, sc->stereo, ri->freq); 329 rtii_set_mute(sc); 330 331 return (0); 332 } 333 334 int 335 rtii_search(void *v, int f) 336 { 337 struct rtii_softc *sc = v; 338 339 tea5757_search(&sc->tea, sc->lock, sc->stereo, f); 340 rtii_set_mute(sc); 341 342 return (0); 343 } 344
Indexes created Mon Sep 22 13:09:51 GMT 2025