/* $OpenBSD: sf16fmr2.c,v 1.4 2002/01/02 19:36:51 mickey Exp $ */ /* $RuOBSD: sf16fmr2.c,v 1.12 2001/10/18 16:51:36 pva Exp $ */ /* * Copyright (c) 2001 Maxim Tsyplakov , * Vladimir Popov * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* SoundForte RadioLink SF16-FMR2 FM Radio Card device driver */ /* * Philips TEA5757H AM/FM Self Tuned Radio: * http://www.semiconductors.philips.com/pip/TEA5757H */ #include #include #include #include #include #include #include #include #include #include #define SF16FMR2_BASE_VALID(x) (x == 0x384) #define SF16FMR2_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \ RADIO_CAPS_DETECT_SIGNAL | \ RADIO_CAPS_SET_MONO | \ RADIO_CAPS_LOCK_SENSITIVITY | \ RADIO_CAPS_HW_AFC | \ RADIO_CAPS_HW_SEARCH #define SF16FMR2_AMPLIFIER (1 << 7) #define SF16FMR2_SIGNAL (1 << 3) #define SF16FMR2_STEREO (1 << 3) #define SF16FMR2_MUTE 0x00 #define SF16FMR2_UNMUTE 0x04 #define SF16FMR2_DATA_ON (1 << 0) #define SF16FMR2_DATA_OFF (0 << 0) #define SF16FMR2_CLCK_ON (1 << 1) #define SF16FMR2_CLCK_OFF (0 << 1) #define SF16FMR2_WREN_ON (0 << 2) /* SF16-FMR2 has inverse WREN */ #define SF16FMR2_WREN_OFF (1 << 2) #define SF16FMR2_READ_CLOCK_LOW \ SF16FMR2_DATA_ON | SF16FMR2_CLCK_OFF | SF16FMR2_WREN_OFF #define SF16FMR2_READ_CLOCK_HIGH \ SF16FMR2_DATA_ON | SF16FMR2_CLCK_ON | SF16FMR2_WREN_OFF int sf2r_probe(struct device *, void *, void *); void sf2r_attach(struct device *, struct device * self, void *); int sf2r_get_info(void *, struct radio_info *); int sf2r_set_info(void *, struct radio_info *); int sf2r_search(void *, int); /* define our interface to the higher level radio driver */ struct radio_hw_if sf2r_hw_if = { NULL, /* open */ NULL, /* close */ sf2r_get_info, sf2r_set_info, sf2r_search }; struct sf2r_softc { struct device sc_dev; u_int32_t freq; u_int32_t stereo; u_int32_t lock; u_int8_t vol; int mute; struct tea5757_t tea; }; struct cfattach sf2r_ca = { sizeof(struct sf2r_softc), sf2r_probe, sf2r_attach }; struct cfdriver sf2r_cd = { NULL, "sf2r", DV_DULL }; void sf2r_set_mute(struct sf2r_softc *); int sf2r_find(bus_space_tag_t, bus_space_handle_t); u_int32_t sf2r_read_register(bus_space_tag_t, bus_space_handle_t, bus_size_t); void sf2r_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); void sf2r_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); void sf2r_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int); int sf2r_probe(struct device *parent, void *self, void *aux) { struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int iosize = 1, iobase = ia->ia_iobase; if (!SF16FMR2_BASE_VALID(iobase)) { printf("sf2r: configured iobase 0x%x invalid\n", iobase); return (0); } if (bus_space_map(iot, iobase, iosize, 0, &ioh)) return (0); if (!sf2r_find(iot, ioh)) { bus_space_unmap(iot, ioh, iosize); return (0); } bus_space_unmap(iot, ioh, iosize); ia->ia_iosize = iosize; return (1); } void sf2r_attach(struct device *parent, struct device *self, void *aux) { struct sf2r_softc *sc = (void *) self; struct isa_attach_args *ia = aux; sc->tea.iot = ia->ia_iot; sc->mute = 0; sc->vol = 0; sc->freq = MIN_FM_FREQ; sc->stereo = TEA5757_STEREO; sc->lock = TEA5757_S030; /* remap I/O */ if (bus_space_map(sc->tea.iot, ia->ia_iobase, ia->ia_iosize, 0, &sc->tea.ioh)) { printf(": bus_space_map() failed\n"); return; } sc->tea.offset = 0; sc->tea.init = sf2r_init; sc->tea.rset = sf2r_rset; sc->tea.write_bit = sf2r_write_bit; sc->tea.read = sf2r_read_register; printf(": SoundForte RadioLink SF16-FMR2\n"); tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq); sf2r_set_mute(sc); radio_attach_mi(&sf2r_hw_if, sc, &sc->sc_dev); } /* * Mute/unmute the card */ void sf2r_set_mute(struct sf2r_softc *sc) { u_int8_t mute; mute = (sc->mute || !sc->vol) ? SF16FMR2_MUTE : SF16FMR2_UNMUTE; bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); DELAY(64); bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); } void sf2r_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) { bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE); } void sf2r_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) { bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE); bus_space_write_1(iot, ioh, off, SF16FMR2_UNMUTE); } int sf2r_find(bus_space_tag_t iot, bus_space_handle_t ioh) { struct sf2r_softc sc; u_int32_t freq; sc.tea.iot = iot; sc.tea.ioh = ioh; sc.tea.offset = 0; sc.tea.init = sf2r_init; sc.tea.rset = sf2r_rset; sc.tea.write_bit = sf2r_write_bit; sc.tea.read = sf2r_read_register; sc.lock = TEA5757_S030; sc.stereo = TEA5757_STEREO; if ((bus_space_read_1(iot, ioh, 0) & 0x70) == 0x30) { /* * Let's try to write and read a frequency. * If the written and read frequencies are * the same then success. */ sc.freq = MIN_FM_FREQ; tea5757_set_freq(&sc.tea, sc.stereo, sc.lock, sc.freq); sf2r_set_mute(&sc); freq = sf2r_read_register(iot, ioh, sc.tea.offset); if (tea5757_decode_freq(freq) == sc.freq) return 1; } return 0; } void sf2r_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) { u_int8_t data; data = bit ? SF16FMR2_DATA_ON : SF16FMR2_DATA_OFF; bus_space_write_1(iot, ioh, off, SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data); bus_space_write_1(iot, ioh, off, SF16FMR2_WREN_ON | SF16FMR2_CLCK_ON | data); bus_space_write_1(iot, ioh, off, SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data); } u_int32_t sf2r_read_register(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) { u_int32_t res = 0; u_int8_t i, state = 0; bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); DELAY(6); bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH); i = bus_space_read_1(iot, ioh, off); DELAY(6); /* Amplifier: 0 - not present, 1 - present */ state = i & SF16FMR2_AMPLIFIER ? (1 << 2) : (0 << 2); /* Signal: 0 - not tuned, 1 - tuned */ state |= i & SF16FMR2_SIGNAL ? (0 << 1) : (1 << 1); bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); i = bus_space_read_1(iot, ioh, off); /* Stereo: 0 - mono, 1 - stereo */ state |= i & SF16FMR2_STEREO ? (0 << 0) : (1 << 0); res = i & SF16FMR2_DATA_ON; i = 23; while ( i-- ) { DELAY(6); res <<= 1; bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH); DELAY(6); bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW); res |= bus_space_read_1(iot, ioh, off) & SF16FMR2_DATA_ON; } return res | (state << 24); } int sf2r_get_info(void *v, struct radio_info *ri) { struct sf2r_softc *sc = v; u_int32_t buf; ri->mute = sc->mute; ri->volume = sc->vol ? 255 : 0; ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; ri->caps = SF16FMR2_CAPABILITIES; ri->rfreq = 0; ri->lock = tea5757_decode_lock(sc->lock); buf = sf2r_read_register(sc->tea.iot, sc->tea.ioh, sc->tea.offset); ri->freq = sc->freq = tea5757_decode_freq(buf); ri->info = 3 & (buf >> 24); return (0); } int sf2r_set_info(void *v, struct radio_info *ri) { struct sf2r_softc *sc = v; sc->mute = ri->mute ? 1 : 0; sc->vol = ri->volume ? 255 : 0; sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO; sc->lock = tea5757_encode_lock(ri->lock); ri->freq = sc->freq = tea5757_set_freq(&sc->tea, sc->lock, sc->stereo, ri->freq); sf2r_set_mute(sc); return (0); } int sf2r_search(void *v, int f) { struct sf2r_softc *sc = v; tea5757_search(&sc->tea, sc->lock, sc->stereo, f); sf2r_set_mute(sc); return (0); }