1 /* $NetBSD: radiotrack2.c,v 1.10 2004/10/29 12:57:17 yamt 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@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 /* 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/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: radiotrack2.c,v 1.10 2004/10/29 12:57:17 yamt 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 RTII_BASE_VALID(x) ((x == 0x20C) || (x == 0x30C)) 54 #define RTII_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 #if 0 62 #define RTII_SIGNAL (1 << 3) 63 #define RTII_STEREO (1 << 3) 64 #endif /* 0 */ 65 66 #define RTII_MUTE 0x01 67 #define RTII_UNMUTE 0x00 68 69 #define RTII_RESET 0xC8 70 71 #define RTII_DATA_ON (1 << 2) 72 #define RTII_DATA_OFF (0 << 2) 73 74 #define RTII_CLCK_ON (1 << 1) 75 #define RTII_CLCK_OFF (0 << 1) 76 77 #define RTII_WREN_ON (0 << 0) 78 #define RTII_WREN_OFF (1 << 0) 79 80 #define RTII_READ_CLOCK_LOW (RTII_DATA_ON | RTII_CLCK_OFF | RTII_WREN_OFF) 81 #define RTII_READ_CLOCK_HIGH (RTII_DATA_ON | RTII_CLCK_ON | RTII_WREN_OFF) 82 83 int rtii_probe(struct device *, struct cfdata *, void *); 84 void rtii_attach(struct device *, struct device * self, void *); 85 86 int rtii_get_info(void *, struct radio_info *); 87 int rtii_set_info(void *, struct radio_info *); 88 int rtii_search(void *, int); 89 90 /* define our interface to the higher level radio driver */ 91 const struct radio_hw_if rtii_hw_if = { 92 NULL, /* open */ 93 NULL, /* close */ 94 rtii_get_info, 95 rtii_set_info, 96 rtii_search 97 }; 98 99 struct rtii_softc { 100 struct device 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(rtii, sizeof(struct rtii_softc), 112 rtii_probe, rtii_attach, NULL, NULL); 113 114 void rtii_set_mute(struct rtii_softc *); 115 int rtii_find(bus_space_tag_t, bus_space_handle_t); 116 117 u_int32_t rtii_hw_read(bus_space_tag_t, bus_space_handle_t, bus_size_t); 118 119 void rtii_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 120 void rtii_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 121 void rtii_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int); 122 123 int 124 rtii_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 (!RTII_BASE_VALID(iobase)) { 141 printf("rtii: 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 = rtii_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 rtii_attach(struct device *parent, struct device *self, void *aux) 168 { 169 struct rtii_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("rtiiattach: bus_space_map() failed"); 184 185 sc->tea.offset = 0; 186 187 sc->tea.init = rtii_init; 188 sc->tea.rset = rtii_rset; 189 sc->tea.write_bit = rtii_write_bit; 190 sc->tea.read = rtii_hw_read; 191 192 printf(": AIMS Lab Radiotrack II\n"); 193 tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq); 194 rtii_set_mute(sc); 195 196 radio_attach_mi(&rtii_hw_if, sc, &sc->dev); 197 } 198 199 /* 200 * Mute/unmute the card 201 */ 202 void 203 rtii_set_mute(struct rtii_softc *sc) 204 { 205 u_int8_t mute; 206 207 mute = (sc->mute || !sc->vol) ? RTII_MUTE : RTII_UNMUTE; 208 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 209 DELAY(6); 210 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); 211 } 212 213 void 214 rtii_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, RTII_RESET | RTII_WREN_OFF); 217 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON); 218 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON); 219 } 220 221 void 222 rtii_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 223 { 224 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF); 225 } 226 227 int 228 rtii_find(bus_space_tag_t iot, bus_space_handle_t ioh) 229 { 230 struct rtii_softc sc; 231 u_int32_t freq; 232 233 sc.tea.iot = iot; 234 sc.tea.ioh = ioh; 235 sc.tea.offset = 0; 236 sc.tea.init = rtii_init; 237 sc.tea.rset = rtii_rset; 238 sc.tea.write_bit = rtii_write_bit; 239 sc.tea.read = rtii_hw_read; 240 sc.lock = TEA5757_S030; 241 sc.stereo = TEA5757_STEREO; 242 243 /* 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 rtii_set_mute(&sc); 251 freq = rtii_hw_read(iot, ioh, sc.tea.offset); 252 if (tea5757_decode_freq(freq, 0) == sc.freq) 253 return 1; 254 255 return 0; 256 } 257 258 void 259 rtii_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) 260 { 261 u_int8_t data; 262 263 data = bit ? RTII_DATA_ON : RTII_DATA_OFF; 264 265 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data); 266 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_ON | data); 267 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data); 268 } 269 270 u_int32_t 271 rtii_hw_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) 272 { 273 u_int8_t i; 274 u_int32_t res = 0; 275 276 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW); 277 DELAY(6); 278 279 i = 24; 280 while ( i-- ) { 281 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_HIGH); 282 DELAY(6); 283 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW); 284 res |= bus_space_read_1(iot, ioh, off) & RTII_DATA_ON ? 1 : 0; 285 DELAY(6); 286 res <<= 1; 287 } 288 289 return (res & (TEA5757_DATA | TEA5757_FREQ)) >> 1; 290 } 291 292 int 293 rtii_get_info(void *v, struct radio_info *ri) 294 { 295 struct rtii_softc *sc = v; 296 297 ri->mute = sc->mute; 298 ri->volume = sc->vol ? 255 : 0; 299 ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; 300 ri->caps = RTII_CAPABILITIES; 301 ri->rfreq = 0; 302 ri->lock = tea5757_decode_lock(sc->lock); 303 304 ri->freq = sc->freq = tea5757_decode_freq(rtii_hw_read(sc->tea.iot, 305 sc->tea.ioh, sc->tea.offset), 0); 306 307 switch (bus_space_read_1(sc->tea.iot, sc->tea.ioh, 0)) { 308 case 0xFD: 309 ri->info = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO; 310 break; 311 case 0xFF: 312 ri->info = 0; 313 break; 314 default: 315 ri->info = RADIO_INFO_SIGNAL; 316 } 317 318 return (0); 319 } 320 321 int 322 rtii_set_info(void *v, struct radio_info *ri) 323 { 324 struct rtii_softc *sc = v; 325 326 sc->mute = ri->mute ? 1 : 0; 327 sc->vol = ri->volume ? 255 : 0; 328 sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO; 329 sc->lock = tea5757_encode_lock(ri->lock); 330 ri->freq = sc->freq = tea5757_set_freq(&sc->tea, 331 sc->lock, sc->stereo, ri->freq); 332 rtii_set_mute(sc); 333 334 return (0); 335 } 336 337 int 338 rtii_search(void *v, int f) 339 { 340 struct rtii_softc *sc = v; 341 342 tea5757_search(&sc->tea, sc->lock, sc->stereo, f); 343 rtii_set_mute(sc); 344 345 return (0); 346 } 347