sf16fmr2.c revision 1.3
1 /* $NetBSD: sf16fmr2.c,v 1.3 2002/01/03 18:13:20 augustss Exp $ */ 2 /* $OpenBSD: sf16fmr2.c,v 1.3 2001/12/18 18:48:08 mickey Exp $ */ 3 /* $RuOBSD: sf16fmr2.c,v 1.12 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 /* SoundForte RadioLink SF16-FMR2 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 SF16FMR2_BASE_VALID(x) (x == 0x384) 51 #define SF16FMR2_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 #define SF16FMR2_AMPLIFIER (1 << 7) 59 #define SF16FMR2_SIGNAL (1 << 3) 60 #define SF16FMR2_STEREO (1 << 3) 61 62 #define SF16FMR2_MUTE 0x00 63 #define SF16FMR2_UNMUTE 0x04 64 65 #define SF16FMR2_DATA_ON (1 << 0) 66 #define SF16FMR2_DATA_OFF (0 << 0) 67 68 #define SF16FMR2_CLCK_ON (1 << 1) 69 #define SF16FMR2_CLCK_OFF (0 << 1) 70 71 #define SF16FMR2_WREN_ON (0 << 2) /* SF16-FMR2 has inverse WREN */ 72 #define SF16FMR2_WREN_OFF (1 << 2) 73 74 #define SF16FMR2_READ_CLOCK_LOW \ 75 SF16FMR2_DATA_ON | SF16FMR2_CLCK_OFF | SF16FMR2_WREN_OFF 76 77 #define SF16FMR2_READ_CLOCK_HIGH \ 78 SF16FMR2_DATA_ON | SF16FMR2_CLCK_ON | SF16FMR2_WREN_OFF 79 80 int sf2r_probe(struct device *, struct cfdata *, void *); 81 void sf2r_attach(struct device *, struct device * self, void *); 82 83 int sf2r_get_info(void *, struct radio_info *); 84 int sf2r_set_info(void *, struct radio_info *); 85 int sf2r_search(void *, int); 86 87 /* define our interface to the higher level radio driver */ 88 struct radio_hw_if sf2r_hw_if = { 89 NULL, /* open */ 90 NULL, /* close */ 91 sf2r_get_info, 92 sf2r_set_info, 93 sf2r_search 94 }; 95 96 struct sf2r_softc { 97 struct device sc_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 sf2r_ca = { 109 sizeof(struct sf2r_softc), sf2r_probe, sf2r_attach 110 }; 111 112 void sf2r_set_mute(struct sf2r_softc *); 113 int sf2r_find(bus_space_tag_t, bus_space_handle_t); 114 115 u_int32_t sf2r_read_register(bus_space_tag_t, bus_space_handle_t, bus_size_t); 116 117 void sf2r_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 118 void sf2r_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 119 void sf2r_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int); 120 121 int 122 sf2r_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 (!SF16FMR2_BASE_VALID(iobase)) { 131 printf("sf2r: 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 = sf2r_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 sf2r_attach(struct device *parent, struct device *self, void *aux) 149 { 150 struct sf2r_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("sf2rattach: bus_space_map() failed"); 164 165 sc->tea.offset = 0; 166 167 sc->tea.init = sf2r_init; 168 sc->tea.rset = sf2r_rset; 169 sc->tea.write_bit = sf2r_write_bit; 170 sc->tea.read = sf2r_read_register; 171 172 printf(": SoundForte RadioLink SF16-FMR2\n"); 173 tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq); 174 sf2r_set_mute(sc); 175 176 radio_attach_mi(&sf2r_hw_if, sc, &sc->sc_dev); 177 } 178 179 /* 180 * Mute/unmute the card 181 */ 182 void 183 sf2r_set_mute(struct sf2r_softc *sc) 184 { 185 u_int8_t mute; 186 187 mute = (sc->mute || !sc->vol) ? SF16FMR2_MUTE : SF16FMR2_UNMUTE; 188 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 189 DELAY(64); 190 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 191 } 192 193 void 194 sf2r_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, SF16FMR2_MUTE); 197 } 198 199 void 200 sf2r_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 201 { 202 bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE); 203 bus_space_write_1(iot, ioh, off, SF16FMR2_UNMUTE); 204 } 205 206 int 207 sf2r_find(bus_space_tag_t iot, bus_space_handle_t ioh) 208 { 209 struct sf2r_softc sc; 210 u_int32_t freq; 211 212 sc.tea.iot = iot; 213 sc.tea.ioh = ioh; 214 sc.tea.offset = 0; 215 sc.tea.init = sf2r_init; 216 sc.tea.rset = sf2r_rset; 217 sc.tea.write_bit = sf2r_write_bit; 218 sc.tea.read = sf2r_read_register; 219 sc.lock = TEA5757_S030; 220 sc.stereo = TEA5757_STEREO; 221 222 if ((bus_space_read_1(iot, ioh, 0) & 0x70) == 0x30) { 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 sf2r_set_mute(&sc); 231 freq = sf2r_read_register(iot, ioh, sc.tea.offset); 232 if (tea5757_decode_freq(freq) == sc.freq) 233 return 1; 234 } 235 236 return 0; 237 } 238 239 void 240 sf2r_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) 241 { 242 u_int8_t data; 243 244 data = bit ? SF16FMR2_DATA_ON : SF16FMR2_DATA_OFF; 245 246 bus_space_write_1(iot, ioh, off, 247 SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data); 248 bus_space_write_1(iot, ioh, off, 249 SF16FMR2_WREN_ON | SF16FMR2_CLCK_ON | data); 250 bus_space_write_1(iot, ioh, off, 251 SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data); 252 } 253 254 u_int32_t 255 sf2r_read_register(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) 256 { 257 u_int32_t res = 0; 258 u_int8_t i, state = 0; 259 260 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 261 DELAY(6); 262 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH); 263 264 i = bus_space_read_1(iot, ioh, off); 265 DELAY(6); 266 /* Amplifier: 0 - not present, 1 - present */ 267 state = i & SF16FMR2_AMPLIFIER ? (1 << 2) : (0 << 2); 268 /* Signal: 0 - not tuned, 1 - tuned */ 269 state |= i & SF16FMR2_SIGNAL ? (0 << 1) : (1 << 1); 270 271 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 272 i = bus_space_read_1(iot, ioh, off); 273 /* Stereo: 0 - mono, 1 - stereo */ 274 state |= i & SF16FMR2_STEREO ? (0 << 0) : (1 << 0); 275 res = i & SF16FMR2_DATA_ON; 276 277 i = 23; 278 while ( i-- ) { 279 DELAY(6); 280 res <<= 1; 281 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH); 282 DELAY(6); 283 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 284 res |= bus_space_read_1(iot, ioh, off) & SF16FMR2_DATA_ON; 285 } 286 287 return res | (state << 24); 288 } 289 290 int 291 sf2r_get_info(void *v, struct radio_info *ri) 292 { 293 struct sf2r_softc *sc = v; 294 u_int32_t buf; 295 296 ri->mute = sc->mute; 297 ri->volume = sc->vol ? 255 : 0; 298 ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; 299 ri->caps = SF16FMR2_CAPABILITIES; 300 ri->rfreq = 0; 301 ri->lock = tea5757_decode_lock(sc->lock); 302 303 buf = sf2r_read_register(sc->tea.iot, sc->tea.ioh, sc->tea.offset); 304 ri->freq = sc->freq = tea5757_decode_freq(buf); 305 ri->info = 3 & (buf >> 24); 306 307 return (0); 308 } 309 310 int 311 sf2r_set_info(void *v, struct radio_info *ri) 312 { 313 struct sf2r_softc *sc = v; 314 315 sc->mute = ri->mute ? 1 : 0; 316 sc->vol = ri->volume ? 255 : 0; 317 sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO; 318 sc->lock = tea5757_encode_lock(ri->lock); 319 ri->freq = sc->freq = tea5757_set_freq(&sc->tea, 320 sc->lock, sc->stereo, ri->freq); 321 sf2r_set_mute(sc); 322 323 return (0); 324 } 325 326 int 327 sf2r_search(void *v, int f) 328 { 329 struct sf2r_softc *sc = v; 330 331 tea5757_search(&sc->tea, sc->lock, sc->stereo, f); 332 sf2r_set_mute(sc); 333 334 return (0); 335 } 336
Indexes created Mon Sep 22 10:09:38 GMT 2025