radiotrack2.c revision 1.2
1 /* $NetBSD: radiotrack2.c,v 1.2 2002/01/02 12:42:23 augustss 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 = ia->ia_iobase; 129 130 if (!RTII_BASE_VALID(iobase)) { 131 printf("rtii: configured iobase 0x%x invalid\n", iobase); 132 return 0; 133 } 134 135 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 136 return 0; 137 138 r = rtii_find(iot, ioh); 139 140 bus_space_unmap(iot, ioh, iosize); 141 142 ia->ia_iosize = iosize; 143 144 return (r != 0); 145 } 146 147 void 148 rtii_attach(struct device *parent, struct device *self, void *aux) 149 { 150 struct rtii_softc *sc = (void *) self; 151 struct isa_attach_args *ia = aux; 152 153 sc->tea.iot = ia->ia_iot; 154 sc->mute = 0; 155 sc->vol = 0; 156 sc->freq = MIN_FM_FREQ; 157 sc->stereo = TEA5757_STEREO; 158 sc->lock = TEA5757_S030; 159 160 /* remap I/O */ 161 if (bus_space_map(sc->tea.iot, ia->ia_iobase, ia->ia_iosize, 162 0, &sc->tea.ioh)) 163 panic("rtiiattach: bus_space_map() failed"); 164 165 sc->tea.offset = 0; 166 167 sc->tea.init = rtii_init; 168 sc->tea.rset = rtii_rset; 169 sc->tea.write_bit = rtii_write_bit; 170 sc->tea.read = rtii_hw_read; 171 172 printf(": AIMS Lab Radiotrack II"); 173 tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq); 174 rtii_set_mute(sc); 175 176 radio_attach_mi(&rtii_hw_if, sc, &sc->dev); 177 } 178 179 /* 180 * Mute/unmute the card 181 */ 182 void 183 rtii_set_mute(struct rtii_softc *sc) 184 { 185 u_int8_t mute; 186 187 mute = (sc->mute || !sc->vol) ? RTII_MUTE : RTII_UNMUTE; 188 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 189 DELAY(6); 190 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 191 } 192 193 void 194 rtii_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 195 { 196 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF); 197 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON); 198 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON); 199 } 200 201 void 202 rtii_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 203 { 204 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF); 205 } 206 207 int 208 rtii_find(bus_space_tag_t iot, bus_space_handle_t ioh) 209 { 210 struct rtii_softc sc; 211 u_int32_t freq; 212 213 sc.tea.iot = iot; 214 sc.tea.ioh = ioh; 215 sc.tea.offset = 0; 216 sc.tea.init = rtii_init; 217 sc.tea.rset = rtii_rset; 218 sc.tea.write_bit = rtii_write_bit; 219 sc.tea.read = rtii_hw_read; 220 sc.lock = TEA5757_S030; 221 sc.stereo = TEA5757_STEREO; 222 223 /* 224 * Let's try to write and read a frequency. 225 * If the written and read frequencies are 226 * the same then success. 227 */ 228 sc.freq = MIN_FM_FREQ; 229 tea5757_set_freq(&sc.tea, sc.stereo, sc.lock, sc.freq); 230 rtii_set_mute(&sc); 231 freq = rtii_hw_read(iot, ioh, sc.tea.offset); 232 if (tea5757_decode_freq(freq) == sc.freq) 233 return 1; 234 235 return 0; 236 } 237 238 void 239 rtii_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) 240 { 241 u_int8_t data; 242 243 data = bit ? RTII_DATA_ON : RTII_DATA_OFF; 244 245 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data); 246 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_ON | data); 247 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data); 248 } 249 250 u_int32_t 251 rtii_hw_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) 252 { 253 u_int8_t i; 254 u_int32_t res = 0; 255 256 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW); 257 DELAY(6); 258 259 i = 24; 260 while ( i-- ) { 261 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_HIGH); 262 DELAY(6); 263 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW); 264 res |= bus_space_read_1(iot, ioh, off) & RTII_DATA_ON ? 1 : 0; 265 DELAY(6); 266 res <<= 1; 267 } 268 269 return (res & (TEA5757_DATA | TEA5757_FREQ)) >> 1; 270 } 271 272 int 273 rtii_get_info(void *v, struct radio_info *ri) 274 { 275 struct rtii_softc *sc = v; 276 277 ri->mute = sc->mute; 278 ri->volume = sc->vol ? 255 : 0; 279 ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; 280 ri->caps = RTII_CAPABILITIES; 281 ri->rfreq = 0; 282 ri->lock = tea5757_decode_lock(sc->lock); 283 284 ri->freq = sc->freq = tea5757_decode_freq(rtii_hw_read(sc->tea.iot, 285 sc->tea.ioh, sc->tea.offset)); 286 287 switch (bus_space_read_1(sc->tea.iot, sc->tea.ioh, 0)) { 288 case 0xFD: 289 ri->info = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO; 290 break; 291 case 0xFF: 292 ri->info = 0; 293 break; 294 default: 295 ri->info = RADIO_INFO_SIGNAL; 296 } 297 298 return (0); 299 } 300 301 int 302 rtii_set_info(void *v, struct radio_info *ri) 303 { 304 struct rtii_softc *sc = v; 305 306 sc->mute = ri->mute ? 1 : 0; 307 sc->vol = ri->volume ? 255 : 0; 308 sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO; 309 sc->lock = tea5757_encode_lock(ri->lock); 310 ri->freq = sc->freq = tea5757_set_freq(&sc->tea, 311 sc->lock, sc->stereo, ri->freq); 312 rtii_set_mute(sc); 313 314 return (0); 315 } 316 317 int 318 rtii_search(void *v, int f) 319 { 320 struct rtii_softc *sc = v; 321 322 tea5757_search(&sc->tea, sc->lock, sc->stereo, f); 323 rtii_set_mute(sc); 324 325 return (0); 326 } 327
Indexes created Mon Sep 22 21:09:42 GMT 2025