Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/sf16fmr2.c
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1 /* $NetBSD: sf16fmr2.c,v 1.9 2003/07/14 15:47:16 lukem 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@oganer.net>, 7 * Vladimir Popov <jumbo@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 1.9 2003/07/14 15:47:16 lukem 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 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, void *aux) 125 { 126 struct isa_attach_args *ia = aux; 127 bus_space_tag_t iot = ia->ia_iot; 128 bus_space_handle_t ioh; 129 u_int r; 130 int iosize = 1, iobase; 131 132 if (ISA_DIRECT_CONFIG(ia)) 133 return 0; 134 135 if (ia->ia_nio < 1) 136 return 0; 137 138 iobase = ia->ia_io[0].ir_addr; 139 140 if (!SF16FMR2_BASE_VALID(iobase)) { 141 printf("sf2r: configured iobase 0x%x invalid\n", iobase); 142 return 0; 143 } 144 145 if (bus_space_map(iot, iobase, iosize, 0, &ioh)) 146 return 0; 147 148 r = sf2r_find(iot, ioh); 149 150 bus_space_unmap(iot, ioh, iosize); 151 152 if (r != 0) { 153 ia->ia_nio = 1; 154 ia->ia_io[0].ir_size = iosize; 155 156 ia->ia_niomem = 0; 157 ia->ia_nirq = 0; 158 ia->ia_ndrq = 0; 159 160 return (1); 161 } 162 163 return (0); 164 } 165 166 void 167 sf2r_attach(struct device *parent, struct device *self, void *aux) 168 { 169 struct sf2r_softc *sc = (void *) self; 170 struct isa_attach_args *ia = aux; 171 172 sc->tea.iot = ia->ia_iot; 173 sc->tea.flags = 0; 174 sc->mute = 0; 175 sc->vol = 0; 176 sc->freq = MIN_FM_FREQ; 177 sc->stereo = TEA5757_STEREO; 178 sc->lock = TEA5757_S030; 179 180 /* remap I/O */ 181 if (bus_space_map(sc->tea.iot, ia->ia_io[0].ir_addr, 182 ia->ia_io[0].ir_size, 0, &sc->tea.ioh)) 183 panic("sf2rattach: bus_space_map() failed"); 184 185 sc->tea.offset = 0; 186 187 sc->tea.init = sf2r_init; 188 sc->tea.rset = sf2r_rset; 189 sc->tea.write_bit = sf2r_write_bit; 190 sc->tea.read = sf2r_read_register; 191 192 printf(": SoundForte RadioLink SF16-FMR2\n"); 193 tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq); 194 sf2r_set_mute(sc); 195 196 radio_attach_mi(&sf2r_hw_if, sc, &sc->sc_dev); 197 } 198 199 /* 200 * Mute/unmute the card 201 */ 202 void 203 sf2r_set_mute(struct sf2r_softc *sc) 204 { 205 u_int8_t mute; 206 207 mute = (sc->mute || !sc->vol) ? SF16FMR2_MUTE : SF16FMR2_UNMUTE; 208 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 209 DELAY(64); 210 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 211 } 212 213 void 214 sf2r_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 215 { 216 bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE); 217 } 218 219 void 220 sf2r_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 221 { 222 bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE); 223 bus_space_write_1(iot, ioh, off, SF16FMR2_UNMUTE); 224 } 225 226 int 227 sf2r_find(bus_space_tag_t iot, bus_space_handle_t ioh) 228 { 229 struct sf2r_softc sc; 230 u_int32_t freq; 231 232 sc.tea.iot = iot; 233 sc.tea.ioh = ioh; 234 sc.tea.offset = 0; 235 sc.tea.init = sf2r_init; 236 sc.tea.rset = sf2r_rset; 237 sc.tea.write_bit = sf2r_write_bit; 238 sc.tea.read = sf2r_read_register; 239 sc.lock = TEA5757_S030; 240 sc.stereo = TEA5757_STEREO; 241 242 if ((bus_space_read_1(iot, ioh, 0) & 0x70) == 0x30) { 243 /* 244 * Let's try to write and read a frequency. 245 * If the written and read frequencies are 246 * the same then success. 247 */ 248 sc.freq = MIN_FM_FREQ; 249 tea5757_set_freq(&sc.tea, sc.stereo, sc.lock, sc.freq); 250 sf2r_set_mute(&sc); 251 freq = sf2r_read_register(iot, ioh, sc.tea.offset); 252 if (tea5757_decode_freq(freq, 0) == sc.freq) 253 return 1; 254 } 255 256 return 0; 257 } 258 259 void 260 sf2r_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) 261 { 262 u_int8_t data; 263 264 data = bit ? SF16FMR2_DATA_ON : SF16FMR2_DATA_OFF; 265 266 bus_space_write_1(iot, ioh, off, 267 SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data); 268 bus_space_write_1(iot, ioh, off, 269 SF16FMR2_WREN_ON | SF16FMR2_CLCK_ON | data); 270 bus_space_write_1(iot, ioh, off, 271 SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data); 272 } 273 274 u_int32_t 275 sf2r_read_register(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) 276 { 277 u_int32_t res = 0; 278 u_int8_t i, state = 0; 279 280 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 281 DELAY(6); 282 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH); 283 284 i = bus_space_read_1(iot, ioh, off); 285 DELAY(6); 286 /* Amplifier: 0 - not present, 1 - present */ 287 state = i & SF16FMR2_AMPLIFIER ? (1 << 2) : (0 << 2); 288 /* Signal: 0 - not tuned, 1 - tuned */ 289 state |= i & SF16FMR2_SIGNAL ? (0 << 1) : (1 << 1); 290 291 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 292 i = bus_space_read_1(iot, ioh, off); 293 /* Stereo: 0 - mono, 1 - stereo */ 294 state |= i & SF16FMR2_STEREO ? (0 << 0) : (1 << 0); 295 res = i & SF16FMR2_DATA_ON; 296 297 i = 23; 298 while ( i-- ) { 299 DELAY(6); 300 res <<= 1; 301 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH); 302 DELAY(6); 303 bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); 304 res |= bus_space_read_1(iot, ioh, off) & SF16FMR2_DATA_ON; 305 } 306 307 return res | (state << 24); 308 } 309 310 int 311 sf2r_get_info(void *v, struct radio_info *ri) 312 { 313 struct sf2r_softc *sc = v; 314 u_int32_t buf; 315 316 ri->mute = sc->mute; 317 ri->volume = sc->vol ? 255 : 0; 318 ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; 319 ri->caps = SF16FMR2_CAPABILITIES; 320 ri->rfreq = 0; 321 ri->lock = tea5757_decode_lock(sc->lock); 322 323 buf = sf2r_read_register(sc->tea.iot, sc->tea.ioh, sc->tea.offset); 324 ri->freq = sc->freq = tea5757_decode_freq(buf, 0); 325 ri->info = 3 & (buf >> 24); 326 327 return (0); 328 } 329 330 int 331 sf2r_set_info(void *v, struct radio_info *ri) 332 { 333 struct sf2r_softc *sc = v; 334 335 sc->mute = ri->mute ? 1 : 0; 336 sc->vol = ri->volume ? 255 : 0; 337 sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO; 338 sc->lock = tea5757_encode_lock(ri->lock); 339 ri->freq = sc->freq = tea5757_set_freq(&sc->tea, 340 sc->lock, sc->stereo, ri->freq); 341 sf2r_set_mute(sc); 342 343 return (0); 344 } 345 346 int 347 sf2r_search(void *v, int f) 348 { 349 struct sf2r_softc *sc = v; 350 351 tea5757_search(&sc->tea, sc->lock, sc->stereo, f); 352 sf2r_set_mute(sc); 353 354 return (0); 355 }
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