/* $NetBSD: radiotrack2.c,v 1.16 2012/10/27 17:18:25 chs Exp $ */ /* $OpenBSD: radiotrack2.c,v 1.1 2001/12/05 10:27:06 mickey Exp $ */ /* $RuOBSD: radiotrack2.c,v 1.2 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. */ /* AIMS Lab Radiotrack II FM Radio Card device driver */ /* * Philips TEA5757H AM/FM Self Tuned Radio: * http://www.semiconductors.philips.com/pip/TEA5757H */ #include __KERNEL_RCSID(0, "$NetBSD: radiotrack2.c,v 1.16 2012/10/27 17:18:25 chs Exp $"); #include #include #include #include #include #include #include #include #include #include #define RTII_BASE_VALID(x) ((x == 0x20C) || (x == 0x30C)) #define RTII_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 #if 0 #define RTII_SIGNAL (1 << 3) #define RTII_STEREO (1 << 3) #endif /* 0 */ #define RTII_MUTE 0x01 #define RTII_UNMUTE 0x00 #define RTII_RESET 0xC8 #define RTII_DATA_ON (1 << 2) #define RTII_DATA_OFF (0 << 2) #define RTII_CLCK_ON (1 << 1) #define RTII_CLCK_OFF (0 << 1) #define RTII_WREN_ON (0 << 0) #define RTII_WREN_OFF (1 << 0) #define RTII_READ_CLOCK_LOW (RTII_DATA_ON | RTII_CLCK_OFF | RTII_WREN_OFF) #define RTII_READ_CLOCK_HIGH (RTII_DATA_ON | RTII_CLCK_ON | RTII_WREN_OFF) int rtii_probe(device_t, cfdata_t, void *); void rtii_attach(device_t, device_t self, void *); int rtii_get_info(void *, struct radio_info *); int rtii_set_info(void *, struct radio_info *); int rtii_search(void *, int); /* define our interface to the higher level radio driver */ const struct radio_hw_if rtii_hw_if = { NULL, /* open */ NULL, /* close */ rtii_get_info, rtii_set_info, rtii_search }; struct rtii_softc { u_int32_t freq; u_int32_t stereo; u_int32_t lock; u_int8_t vol; int mute; struct tea5757_t tea; }; CFATTACH_DECL_NEW(rtii, sizeof(struct rtii_softc), rtii_probe, rtii_attach, NULL, NULL); void rtii_set_mute(struct rtii_softc *); int rtii_find(bus_space_tag_t, bus_space_handle_t); u_int32_t rtii_hw_read(bus_space_tag_t, bus_space_handle_t, bus_size_t); void rtii_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); void rtii_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); void rtii_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int); int rtii_probe(device_t parent, cfdata_t cf, void *aux) { struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; u_int r; int iosize = 1, iobase; if (ISA_DIRECT_CONFIG(ia)) return 0; if (ia->ia_nio < 1) return 0; iobase = ia->ia_io[0].ir_addr; if (!RTII_BASE_VALID(iobase)) { printf("rtii: configured iobase 0x%x invalid\n", iobase); return 0; } if (bus_space_map(iot, iobase, iosize, 0, &ioh)) return 0; r = rtii_find(iot, ioh); bus_space_unmap(iot, ioh, iosize); if (r != 0) { ia->ia_nio = 1; ia->ia_io[0].ir_size = iosize; ia->ia_niomem = 0; ia->ia_nirq = 0; ia->ia_ndrq = 0; return (1); } return (0); } void rtii_attach(device_t parent, device_t self, void *aux) { struct rtii_softc *sc = device_private(self); struct isa_attach_args *ia = aux; sc->tea.iot = ia->ia_iot; sc->tea.flags = 0; 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_io[0].ir_addr, ia->ia_io[0].ir_size, 0, &sc->tea.ioh)) panic("rtiiattach: bus_space_map() failed"); sc->tea.offset = 0; sc->tea.init = rtii_init; sc->tea.rset = rtii_rset; sc->tea.write_bit = rtii_write_bit; sc->tea.read = rtii_hw_read; printf(": AIMS Lab Radiotrack II\n"); tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq); rtii_set_mute(sc); radio_attach_mi(&rtii_hw_if, sc, self); } /* * Mute/unmute the card */ void rtii_set_mute(struct rtii_softc *sc) { u_int8_t mute; mute = (sc->mute || !sc->vol) ? RTII_MUTE : RTII_UNMUTE; bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); DELAY(6); bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); } void rtii_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, RTII_RESET | RTII_WREN_OFF); bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON); bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON); } void rtii_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, RTII_RESET | RTII_WREN_OFF); } int rtii_find(bus_space_tag_t iot, bus_space_handle_t ioh) { struct rtii_softc sc; u_int32_t freq; sc.tea.iot = iot; sc.tea.ioh = ioh; sc.tea.offset = 0; sc.tea.init = rtii_init; sc.tea.rset = rtii_rset; sc.tea.write_bit = rtii_write_bit; sc.tea.read = rtii_hw_read; sc.lock = TEA5757_S030; sc.stereo = TEA5757_STEREO; /* * 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); rtii_set_mute(&sc); freq = rtii_hw_read(iot, ioh, sc.tea.offset); if (tea5757_decode_freq(freq, 0) == sc.freq) return 1; return 0; } void rtii_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) { u_int8_t data; data = bit ? RTII_DATA_ON : RTII_DATA_OFF; bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data); bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_ON | data); bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data); } u_int32_t rtii_hw_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) { u_int8_t i; u_int32_t res = 0; bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW); DELAY(6); i = 24; while ( i-- ) { bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_HIGH); DELAY(6); bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW); res |= bus_space_read_1(iot, ioh, off) & RTII_DATA_ON ? 1 : 0; DELAY(6); res <<= 1; } return (res & (TEA5757_DATA | TEA5757_FREQ)) >> 1; } int rtii_get_info(void *v, struct radio_info *ri) { struct rtii_softc *sc = v; ri->mute = sc->mute; ri->volume = sc->vol ? 255 : 0; ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; ri->caps = RTII_CAPABILITIES; ri->rfreq = 0; ri->lock = tea5757_decode_lock(sc->lock); ri->freq = sc->freq = tea5757_decode_freq(rtii_hw_read(sc->tea.iot, sc->tea.ioh, sc->tea.offset), 0); switch (bus_space_read_1(sc->tea.iot, sc->tea.ioh, 0)) { case 0xFD: ri->info = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO; break; case 0xFF: ri->info = 0; break; default: ri->info = RADIO_INFO_SIGNAL; } return (0); } int rtii_set_info(void *v, struct radio_info *ri) { struct rtii_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); rtii_set_mute(sc); return (0); } int rtii_search(void *v, int f) { struct rtii_softc *sc = v; tea5757_search(&sc->tea, sc->lock, sc->stereo, f); rtii_set_mute(sc); return (0); }