sf16fmr2.c revision 1.13
1 /* $NetBSD: sf16fmr2.c,v 1.13 2006/11/16 01:33:00 christos 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/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: sf16fmr2.c,v 1.13 2006/11/16 01:33:00 christos Exp $"); 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 <dev/isa/isavar.h> 50 #include <dev/radio_if.h> 51 #include <dev/ic/tea5757.h> 52 53 #define SF16FMR2_BASE_VALID(x) (x == 0x384) 54 #define SF16FMR2_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \ 55 RADIO_CAPS_DETECT_SIGNAL | \ 56 RADIO_CAPS_SET_MONO | \ 57 RADIO_CAPS_LOCK_SENSITIVITY | \ 58 RADIO_CAPS_HW_AFC | \ 59 RADIO_CAPS_HW_SEARCH 60 61 #define SF16FMR2_AMPLIFIER (1 << 7) 62 #define SF16FMR2_SIGNAL (1 << 3) 63 #define SF16FMR2_STEREO (1 << 3) 64 65 #define SF16FMR2_MUTE 0x00 66 #define SF16FMR2_UNMUTE 0x04 67 68 #define SF16FMR2_DATA_ON (1 << 0) 69 #define SF16FMR2_DATA_OFF (0 << 0) 70 71 #define SF16FMR2_CLCK_ON (1 << 1) 72 #define SF16FMR2_CLCK_OFF (0 << 1) 73 74 #define SF16FMR2_WREN_ON (0 << 2) /* SF16-FMR2 has inverse WREN */ 75 #define SF16FMR2_WREN_OFF (1 << 2) 76 77 #define SF16FMR2_READ_CLOCK_LOW \ 78 SF16FMR2_DATA_ON | SF16FMR2_CLCK_OFF | SF16FMR2_WREN_OFF 79 80 #define SF16FMR2_READ_CLOCK_HIGH \ 81 SF16FMR2_DATA_ON | SF16FMR2_CLCK_ON | SF16FMR2_WREN_OFF 82 83 int sf2r_probe(struct device *, struct cfdata *, void *); 84 void sf2r_attach(struct device *, struct device * self, void *); 85 86 int sf2r_get_info(void *, struct radio_info *); 87 int sf2r_set_info(void *, struct radio_info *); 88 int sf2r_search(void *, int); 89 90 /* define our interface to the higher level radio driver */ 91 const struct radio_hw_if sf2r_hw_if = { 92 NULL, /* open */ 93 NULL, /* close */ 94 sf2r_get_info, 95 sf2r_set_info, 96 sf2r_search 97 }; 98 99 struct sf2r_softc { 100 struct device sc_dev; 101 102 u_int32_t freq; 103 u_int32_t stereo; 104 u_int32_t lock; 105 u_int8_t vol; 106 int mute; 107 108 struct tea5757_t tea; 109 }; 110 111 CFATTACH_DECL(sf2r, sizeof(struct sf2r_softc), 112 sf2r_probe, sf2r_attach, NULL, NULL); 113 114 void sf2r_set_mute(struct sf2r_softc *); 115 int sf2r_find(bus_space_tag_t, bus_space_handle_t); 116 117 u_int32_t sf2r_read_register(bus_space_tag_t, bus_space_handle_t, bus_size_t); 118 119 void sf2r_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 120 void sf2r_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 121 void sf2r_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int); 122 123 int 124 sf2r_probe(struct device *parent, struct cfdata *cf, 125 void *aux) 126 { 127 struct isa_attach_args *ia = aux; 128 bus_space_tag_t iot = ia->ia_iot; 129 bus_space_handle_t ioh; 130 u_int r; 131 int iosize = 1, iobase; 132 133 if (ISA_DIRECT_CONFIG(ia)) 134 return 0; 135 136 if (ia->ia_nio < 1) 137 return 0; 138 139 iobase = ia->ia_io[0].ir_addr; 140 141 if (!SF16FMR2_BASE_VALID(iobase)) { 142 printf("sf2r: configured iobase 0x%x invalid\n", iobase); 143 return 0; 144 } 145 146 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 147 return 0; 148 149 r = sf2r_find(iot, ioh); 150 151 bus_space_unmap(iot, ioh, iosize); 152 153 if (r != 0) { 154 ia->ia_nio = 1; 155 ia->ia_io[0].ir_size = iosize; 156 157 ia->ia_niomem = 0; 158 ia->ia_nirq = 0; 159 ia->ia_ndrq = 0; 160 161 return (1); 162 } 163 164 return (0); 165 } 166 167 void 168 sf2r_attach(struct device *parent, struct device *self, void *aux) 169 { 170 struct sf2r_softc *sc = (void *) self; 171 struct isa_attach_args *ia = aux; 172 173 sc->tea.iot = ia->ia_iot; 174 sc->tea.flags = 0; 175 sc->mute = 0; 176 sc->vol = 0; 177 sc->freq = MIN_FM_FREQ; 178 sc->stereo = TEA5757_STEREO; 179 sc->lock = TEA5757_S030; 180 181 /* remap I/O */ 182 if (bus_space_map(sc->tea.iot, ia->ia_io[0].ir_addr, 183 ia->ia_io[0].ir_size, 0, &sc->tea.ioh)) 184 panic("sf2rattach: bus_space_map() failed"); 185 186 sc->tea.offset = 0; 187 188 sc->tea.init = sf2r_init; 189 sc->tea.rset = sf2r_rset; 190 sc->tea.write_bit = sf2r_write_bit; 191 sc->tea.read = sf2r_read_register; 192 193 printf(": SoundForte RadioLink SF16-FMR2\n"); 194 tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq); 195 sf2r_set_mute(sc); 196 197 radio_attach_mi(&sf2r_hw_if, sc, &sc->sc_dev); 198 } 199 200 /* 201 * Mute/unmute the card 202 */ 203 void 204 sf2r_set_mute(struct sf2r_softc *sc) 205 { 206 u_int8_t mute; 207 208 mute = (sc->mute || !sc->vol) ? SF16FMR2_MUTE : SF16FMR2_UNMUTE; 209 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 210 DELAY(64); 211 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 212 } 213 214 void 215 sf2r_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 216 u_int32_t d) 217 { 218 bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE); 219 } 220 221 void 222 sf2r_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 223 u_int32_t d) 224 { 225 bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE); 226 bus_space_write_1(iot, ioh, off, SF16FMR2_UNMUTE); 227 } 228 229 int 230 sf2r_find(bus_space_tag_t iot, bus_space_handle_t ioh) 231 { 232 struct sf2r_softc sc; 233 u_int32_t freq; 234 235 sc.tea.iot = iot; 236 sc.tea.ioh = ioh; 237 sc.tea.offset = 0; 238 sc.tea.init = sf2r_init; 239 sc.tea.rset = sf2r_rset; 240 sc.tea.write_bit = sf2r_write_bit; 241 sc.tea.read = sf2r_read_register; 242 sc.lock = TEA5757_S030; 243 sc.stereo = TEA5757_STEREO; 244 245 if ((bus_space_read_1(iot, ioh, 0) & 0x70) == 0x30) { 246 /* 247 * Let's try to write and read a frequency. 248 * If the written and read frequencies are 249 * the same then success. 250 */ 251 sc.freq = MIN_FM_FREQ; 252 tea5757_set_freq(&sc.tea, sc.stereo, sc.lock, sc.freq); 253 sf2r_set_mute(&sc); 254 freq = sf2r_read_register(iot, ioh, sc.tea.offset); 255 if (tea5757_decode_freq(freq, 0) == sc.freq) 256 return 1; 257 } 258 259 return 0; 260 } 261 262 void 263 sf2r_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) 264 { 265 u_int8_t data; 266 267 data = bit ? SF16FMR2_DATA_ON : SF16FMR2_DATA_OFF; 268 269 bus_space_write_1(iot, ioh, off, 270 SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data); 271 bus_space_write_1(iot, ioh, off, 272 SF16FMR2_WREN_ON | SF16FMR2_CLCK_ON | data); 273 bus_space_write_1(iot, ioh, off, 274 SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data); 275 } 276 277 u_int32_t 278 sf2r_read_register(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) 279 { 280 u_int32_t res = 0; 281 u_int8_t i, state = 0; 282 283 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 284 DELAY(6); 285 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH); 286 287 i = bus_space_read_1(iot, ioh, off); 288 DELAY(6); 289 /* Amplifier: 0 - not present, 1 - present */ 290 state = i & SF16FMR2_AMPLIFIER ? (1 << 2) : (0 << 2); 291 /* Signal: 0 - not tuned, 1 - tuned */ 292 state |= i & SF16FMR2_SIGNAL ? (0 << 1) : (1 << 1); 293 294 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 295 i = bus_space_read_1(iot, ioh, off); 296 /* Stereo: 0 - mono, 1 - stereo */ 297 state |= i & SF16FMR2_STEREO ? (0 << 0) : (1 << 0); 298 res = i & SF16FMR2_DATA_ON; 299 300 i = 23; 301 while ( i-- ) { 302 DELAY(6); 303 res <<= 1; 304 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH); 305 DELAY(6); 306 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 307 res |= bus_space_read_1(iot, ioh, off) & SF16FMR2_DATA_ON; 308 } 309 310 return res | (state << 24); 311 } 312 313 int 314 sf2r_get_info(void *v, struct radio_info *ri) 315 { 316 struct sf2r_softc *sc = v; 317 u_int32_t buf; 318 319 ri->mute = sc->mute; 320 ri->volume = sc->vol ? 255 : 0; 321 ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; 322 ri->caps = SF16FMR2_CAPABILITIES; 323 ri->rfreq = 0; 324 ri->lock = tea5757_decode_lock(sc->lock); 325 326 buf = sf2r_read_register(sc->tea.iot, sc->tea.ioh, sc->tea.offset); 327 ri->freq = sc->freq = tea5757_decode_freq(buf, 0); 328 ri->info = 3 & (buf >> 24); 329 330 return (0); 331 } 332 333 int 334 sf2r_set_info(void *v, struct radio_info *ri) 335 { 336 struct sf2r_softc *sc = v; 337 338 sc->mute = ri->mute ? 1 : 0; 339 sc->vol = ri->volume ? 255 : 0; 340 sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO; 341 sc->lock = tea5757_encode_lock(ri->lock); 342 ri->freq = sc->freq = tea5757_set_freq(&sc->tea, 343 sc->lock, sc->stereo, ri->freq); 344 sf2r_set_mute(sc); 345 346 return (0); 347 } 348 349 int 350 sf2r_search(void *v, int f) 351 { 352 struct sf2r_softc *sc = v; 353 354 tea5757_search(&sc->tea, sc->lock, sc->stereo, f); 355 sf2r_set_mute(sc); 356 357 return (0); 358 } 359
Indexes created Thu Sep 25 02:09:54 GMT 2025