299 lines
7.6 KiB
C
299 lines
7.6 KiB
C
/* $NetBSD: maxiradio.c,v 1.1 2002/01/01 21:51:40 augustss Exp $ */
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/* $OpenBSD: maxiradio.c,v 1.2 2001/12/05 10:27:06 mickey Exp $ */
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/* $RuOBSD: maxiradio.c,v 1.5 2001/10/18 16:51:36 pva Exp $ */
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/*
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* Copyright (c) 2001 Maxim Tsyplakov <tm@oganer.net>
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* Vladimir Popov <jumbo@narod.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Guillemot Maxi Radio FM2000 PCI Radio Card Device Driver */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/proc.h>
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#include <sys/radioio.h>
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#include <machine/bus.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/ic/tea5757.h>
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#include <dev/radio_if.h>
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int mr_match(struct device *, struct cfdata *, void *);
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void mr_attach(struct device *, struct device *, void *);
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int mr_get_info(void *, struct radio_info *);
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int mr_set_info(void *, struct radio_info *);
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int mr_search(void *, int);
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/* config base I/O address ? */
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#define PCI_CBIO 0x6400
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#define MAXIRADIO_CAPS RADIO_CAPS_DETECT_SIGNAL | \
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RADIO_CAPS_SET_MONO | \
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RADIO_CAPS_HW_SEARCH | \
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RADIO_CAPS_HW_AFC | \
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RADIO_CAPS_LOCK_SENSITIVITY
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#if 0
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RADIO_CAPS_DETECT_STEREO |
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#endif /* 0 */
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#define MAXIRADIO_MUTE 0x00
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#define MAXIRADIO_UNMUTE 0x10
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#define MAXIRADIO_SIGNAL 0x08
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#define MR_WREN_ON (1 << 2)
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#define MR_WREN_OFF (0 << 2)
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#define MR_DATA_ON (1 << 1)
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#define MR_DATA_OFF (0 << 1)
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#define MR_CLCK_ON (1 << 0)
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#define MR_CLCK_OFF (0 << 0)
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#define MR_READ_CLOCK_LOW (MR_WREN_OFF | MR_DATA_ON | MR_CLCK_OFF)
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#define MR_READ_CLOCK_HIGH (MR_WREN_OFF | MR_DATA_ON | MR_CLCK_ON)
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/* define our interface to the high-level radio driver */
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struct radio_hw_if mr_hw_if = {
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NULL, /* open */
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NULL, /* close */
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mr_get_info,
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mr_set_info,
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mr_search
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};
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struct mr_softc {
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struct device sc_dev;
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int mute;
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u_int8_t vol;
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u_int32_t freq;
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u_int32_t stereo;
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u_int32_t lock;
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struct tea5757_t tea;
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};
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struct cfattach mr_ca = {
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sizeof(struct mr_softc), mr_match, mr_attach
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};
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void mr_set_mute(struct mr_softc *);
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void mr_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int);
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void mr_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
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void mr_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
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int mr_state(bus_space_tag_t, bus_space_handle_t);
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u_int32_t mr_hardware_read(bus_space_tag_t, bus_space_handle_t,
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bus_size_t);
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int
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mr_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct pci_attach_args *pa = aux;
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if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_GUILLEMOT &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_GUILLEMOT_MAXIRADIO)
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return (1);
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return (0);
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}
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void
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mr_attach(struct device *parent, struct device *self, void *aux)
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{
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struct mr_softc *sc = (struct mr_softc *)self;
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struct pci_attach_args *pa = aux;
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pci_chipset_tag_t pc = pa->pa_pc;
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bus_size_t iosize;
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pcireg_t csr;
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char devinfo[256];
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
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printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
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/* Map I/O registers */
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if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
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&sc->tea.iot, &sc->tea.ioh, NULL, &iosize)) {
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printf(": can't map i/o space\n");
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return;
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}
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#if 0
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XXXX
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if (pci_io_find(pc, pa->pa_tag, PCI_CBIO, &iobase, &iosize)) {
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printf (": can't find i/o base\n");
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return;
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}
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if (bus_space_map(sc->tea.iot = pa->pa_iot, iobase, iosize,
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0, &sc->tea.ioh)) {
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printf(": can't map i/o space\n");
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return;
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}
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#endif
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/* Enable the card */
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csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
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pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
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csr | PCI_COMMAND_MASTER_ENABLE);
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sc->freq = MIN_FM_FREQ;
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sc->vol = 0;
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sc->mute = 0;
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sc->stereo = TEA5757_STEREO;
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sc->lock = TEA5757_S030;
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sc->tea.offset = 0;
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sc->tea.init = mr_init;
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sc->tea.rset = mr_rset;
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sc->tea.write_bit = mr_write_bit;
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sc->tea.read = mr_hardware_read;
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radio_attach_mi(&mr_hw_if, sc, &sc->sc_dev);
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}
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int
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mr_get_info(void *v, struct radio_info *ri)
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{
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struct mr_softc *sc = v;
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ri->mute = sc->mute;
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ri->volume = sc->vol ? 255 : 0;
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ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0;
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ri->caps = MAXIRADIO_CAPS;
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ri->rfreq = 0;
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ri->lock = tea5757_decode_lock(sc->lock);
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ri->freq = sc->freq = tea5757_decode_freq(mr_hardware_read(sc->tea.iot,
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sc->tea.ioh, sc->tea.offset));
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ri->info = mr_state(sc->tea.iot, sc->tea.ioh);
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return (0);
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}
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int
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mr_set_info(void *v, struct radio_info *ri)
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{
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struct mr_softc *sc = v;
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sc->mute = ri->mute ? 1 : 0;
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sc->vol = ri->volume ? 255 : 0;
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sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO;
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sc->lock = tea5757_encode_lock(ri->lock);
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ri->freq = sc->freq = tea5757_set_freq(&sc->tea,
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sc->lock, sc->stereo, ri->freq);
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mr_set_mute(sc);
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return (0);
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}
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int
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mr_search(void *v, int f)
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{
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struct mr_softc *sc = v;
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tea5757_search(&sc->tea, sc->lock, sc->stereo, f);
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mr_set_mute(sc);
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return (0);
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}
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void
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mr_set_mute(struct mr_softc *sc)
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{
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int mute;
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mute = (sc->mute || !sc->vol) ? MAXIRADIO_MUTE : MAXIRADIO_UNMUTE;
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bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute);
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}
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void
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mr_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
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int bit)
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{
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u_int8_t data;
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data = bit ? MR_DATA_ON : MR_DATA_OFF;
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bus_space_write_1(iot, ioh, off, MR_WREN_ON | MR_CLCK_OFF | data);
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DELAY(5);
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bus_space_write_1(iot, ioh, off, MR_WREN_ON | MR_CLCK_ON | data);
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DELAY(5);
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bus_space_write_1(iot, ioh, off, MR_WREN_ON | MR_CLCK_OFF | data);
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DELAY(5);
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}
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void
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mr_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d)
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{
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bus_space_write_1(iot, ioh, off, MR_WREN_ON | MR_DATA_ON | MR_CLCK_OFF);
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}
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void
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mr_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d)
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{
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bus_space_write_1(iot, ioh, off, MAXIRADIO_UNMUTE);
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}
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/* COMPLETELY UNTESTED */
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u_int32_t
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mr_hardware_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off)
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{
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u_int32_t reg = 0ul;
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int i;
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bus_space_write_1(iot, ioh, off, MR_READ_CLOCK_LOW);
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DELAY(5);
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i = 24;
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while (i--) {
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bus_space_write_1(iot, ioh, off, MR_READ_CLOCK_HIGH);
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DELAY(5);
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bus_space_write_1(iot, ioh, off, MR_READ_CLOCK_LOW);
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DELAY(5);
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reg |= bus_space_read_1(iot, ioh, off) & MR_DATA_ON ? 1 : 0;
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reg <<= 1;
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}
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reg >>= 1;
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return (reg & (TEA5757_DATA | TEA5757_FREQ));
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}
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int
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mr_state(bus_space_tag_t iot, bus_space_handle_t ioh)
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{
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/* XXX: where is a stereo bit ? */
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return bus_space_read_1(iot, ioh, 0) & MAXIRADIO_SIGNAL ?
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(0 << 1) : (1 << 1);
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}
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