/* $OpenBSD: maxiradio.c,v 1.2 2001/12/05 10:27:06 mickey Exp $ */ /* $RuOBSD: maxiradio.c,v 1.5 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. */ /* Guillemot Maxi Radio FM2000 PCI Radio Card Device Driver */ #include #include #include #include #include #include #include #include #include #include #include #include #include int mr_match(struct device *, void *, void *); void mr_attach(struct device *, struct device *, void *); int mr_get_info(void *, struct radio_info *); int mr_set_info(void *, struct radio_info *); int mr_search(void *, int); /* config base I/O address ? */ #define PCI_CBIO 0x6400 #define MAXIRADIO_CAPS RADIO_CAPS_DETECT_SIGNAL | \ RADIO_CAPS_SET_MONO | \ RADIO_CAPS_HW_SEARCH | \ RADIO_CAPS_HW_AFC | \ RADIO_CAPS_LOCK_SENSITIVITY #if 0 RADIO_CAPS_DETECT_STEREO | #endif /* 0 */ #define MAXIRADIO_MUTE 0x00 #define MAXIRADIO_UNMUTE 0x10 #define MAXIRADIO_SIGNAL 0x08 #define MR_WREN_ON (1 << 2) #define MR_WREN_OFF (0 << 2) #define MR_DATA_ON (1 << 1) #define MR_DATA_OFF (0 << 1) #define MR_CLCK_ON (1 << 0) #define MR_CLCK_OFF (0 << 0) #define MR_READ_CLOCK_LOW (MR_WREN_OFF | MR_DATA_ON | MR_CLCK_OFF) #define MR_READ_CLOCK_HIGH (MR_WREN_OFF | MR_DATA_ON | MR_CLCK_ON) /* define our interface to the high-level radio driver */ struct radio_hw_if mr_hw_if = { NULL, /* open */ NULL, /* close */ mr_get_info, mr_set_info, mr_search }; struct mr_softc { struct device sc_dev; int mute; u_int8_t vol; u_int32_t freq; u_int32_t stereo; u_int32_t lock; struct tea5757_t tea; }; struct cfattach mr_ca = { sizeof(struct mr_softc), mr_match, mr_attach }; struct cfdriver mr_cd = { NULL, "mr", DV_DULL }; void mr_set_mute(struct mr_softc *); void mr_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int); void mr_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); void mr_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); int mr_state(bus_space_tag_t, bus_space_handle_t); u_int32_t mr_hardware_read(bus_space_tag_t, bus_space_handle_t, bus_size_t); int mr_match(struct device *parent, void *match, void *aux) { struct pci_attach_args *pa = aux; if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_GUILLEMOT && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_GUILLEMOT_MAXIRADIO) return (1); return (0); } void mr_attach(struct device *parent, struct device *self, void *aux) { struct mr_softc *sc = (struct mr_softc *) self; struct pci_attach_args *pa = aux; pci_chipset_tag_t pc = pa->pa_pc; bus_addr_t iobase; bus_size_t iosize; pcireg_t csr; if (pci_io_find(pc, pa->pa_tag, PCI_CBIO, &iobase, &iosize)) { printf (": can't find i/o base\n"); return; } if (bus_space_map(sc->tea.iot = pa->pa_iot, iobase, iosize, 0, &sc->tea.ioh)) { printf(": can't map i/o space\n"); return; } /* Enable the card */ csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr | PCI_COMMAND_MASTER_ENABLE); sc->freq = MIN_FM_FREQ; sc->vol = 0; sc->mute = 0; sc->stereo = TEA5757_STEREO; sc->lock = TEA5757_S030; sc->tea.offset = 0; sc->tea.init = mr_init; sc->tea.rset = mr_rset; sc->tea.write_bit = mr_write_bit; sc->tea.read = mr_hardware_read; radio_attach_mi(&mr_hw_if, sc, &sc->sc_dev); } int mr_get_info(void *v, struct radio_info *ri) { struct mr_softc *sc = v; ri->mute = sc->mute; ri->volume = sc->vol ? 255 : 0; ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; ri->caps = MAXIRADIO_CAPS; ri->rfreq = 0; ri->lock = tea5757_decode_lock(sc->lock); ri->freq = sc->freq = tea5757_decode_freq(mr_hardware_read(sc->tea.iot, sc->tea.ioh, sc->tea.offset)); ri->info = mr_state(sc->tea.iot, sc->tea.ioh); return (0); } int mr_set_info(void *v, struct radio_info *ri) { struct mr_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); mr_set_mute(sc); return (0); } int mr_search(void *v, int f) { struct mr_softc *sc = v; tea5757_search(&sc->tea, sc->lock, sc->stereo, f); mr_set_mute(sc); return (0); } void mr_set_mute(struct mr_softc *sc) { int mute; mute = (sc->mute || !sc->vol) ? MAXIRADIO_MUTE : MAXIRADIO_UNMUTE; bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute); } void mr_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit) { u_int8_t data; data = bit ? MR_DATA_ON : MR_DATA_OFF; bus_space_write_1(iot, ioh, off, MR_WREN_ON | MR_CLCK_OFF | data); DELAY(5); bus_space_write_1(iot, ioh, off, MR_WREN_ON | MR_CLCK_ON | data); DELAY(5); bus_space_write_1(iot, ioh, off, MR_WREN_ON | MR_CLCK_OFF | data); DELAY(5); } void mr_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, MR_WREN_ON | MR_DATA_ON | MR_CLCK_OFF); } void mr_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, MAXIRADIO_UNMUTE); } /* COMPLETELY UNTESTED */ u_int32_t mr_hardware_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) { u_int32_t reg = 0ul; int i; bus_space_write_1(iot, ioh, off, MR_READ_CLOCK_LOW); DELAY(5); i = 24; while (i--) { bus_space_write_1(iot, ioh, off, MR_READ_CLOCK_HIGH); DELAY(5); bus_space_write_1(iot, ioh, off, MR_READ_CLOCK_LOW); DELAY(5); reg |= bus_space_read_1(iot, ioh, off) & MR_DATA_ON ? 1 : 0; reg <<= 1; } reg >>= 1; return (reg & (TEA5757_DATA | TEA5757_FREQ)); } int mr_state(bus_space_tag_t iot, bus_space_handle_t ioh) { /* XXX: where is a stereo bit ? */ return bus_space_read_1(iot, ioh, 0) & MAXIRADIO_SIGNAL ? (0 << 1) : (1 << 1); }