347 lines
8.6 KiB
C
347 lines
8.6 KiB
C
/* $NetBSD: radiotrack2.c,v 1.16 2012/10/27 17:18:25 chs Exp $ */
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/* $OpenBSD: radiotrack2.c,v 1.1 2001/12/05 10:27:06 mickey Exp $ */
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/* $RuOBSD: radiotrack2.c,v 1.2 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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/* AIMS Lab Radiotrack II FM Radio Card device driver */
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/*
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* Philips TEA5757H AM/FM Self Tuned Radio:
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* http://www.semiconductors.philips.com/pip/TEA5757H
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: radiotrack2.c,v 1.16 2012/10/27 17:18:25 chs Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/device.h>
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#include <sys/radioio.h>
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#include <dev/isa/isavar.h>
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#include <dev/radio_if.h>
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#include <dev/ic/tea5757.h>
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#define RTII_BASE_VALID(x) ((x == 0x20C) || (x == 0x30C))
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#define RTII_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \
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RADIO_CAPS_DETECT_SIGNAL | \
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RADIO_CAPS_SET_MONO | \
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RADIO_CAPS_LOCK_SENSITIVITY | \
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RADIO_CAPS_HW_AFC | \
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RADIO_CAPS_HW_SEARCH
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#if 0
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#define RTII_SIGNAL (1 << 3)
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#define RTII_STEREO (1 << 3)
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#endif /* 0 */
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#define RTII_MUTE 0x01
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#define RTII_UNMUTE 0x00
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#define RTII_RESET 0xC8
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#define RTII_DATA_ON (1 << 2)
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#define RTII_DATA_OFF (0 << 2)
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#define RTII_CLCK_ON (1 << 1)
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#define RTII_CLCK_OFF (0 << 1)
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#define RTII_WREN_ON (0 << 0)
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#define RTII_WREN_OFF (1 << 0)
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#define RTII_READ_CLOCK_LOW (RTII_DATA_ON | RTII_CLCK_OFF | RTII_WREN_OFF)
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#define RTII_READ_CLOCK_HIGH (RTII_DATA_ON | RTII_CLCK_ON | RTII_WREN_OFF)
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int rtii_probe(device_t, cfdata_t, void *);
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void rtii_attach(device_t, device_t self, void *);
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int rtii_get_info(void *, struct radio_info *);
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int rtii_set_info(void *, struct radio_info *);
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int rtii_search(void *, int);
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/* define our interface to the higher level radio driver */
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const struct radio_hw_if rtii_hw_if = {
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NULL, /* open */
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NULL, /* close */
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rtii_get_info,
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rtii_set_info,
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rtii_search
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};
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struct rtii_softc {
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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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u_int8_t vol;
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int mute;
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struct tea5757_t tea;
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};
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CFATTACH_DECL_NEW(rtii, sizeof(struct rtii_softc),
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rtii_probe, rtii_attach, NULL, NULL);
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void rtii_set_mute(struct rtii_softc *);
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int rtii_find(bus_space_tag_t, bus_space_handle_t);
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u_int32_t rtii_hw_read(bus_space_tag_t, bus_space_handle_t, bus_size_t);
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void rtii_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
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void rtii_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
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void rtii_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int);
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int
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rtii_probe(device_t parent, cfdata_t cf, void *aux)
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{
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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u_int r;
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int iosize = 1, iobase;
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if (ISA_DIRECT_CONFIG(ia))
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return 0;
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if (ia->ia_nio < 1)
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return 0;
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iobase = ia->ia_io[0].ir_addr;
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if (!RTII_BASE_VALID(iobase)) {
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printf("rtii: configured iobase 0x%x invalid\n", iobase);
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return 0;
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}
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if (bus_space_map(iot, iobase, iosize, 0, &ioh))
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return 0;
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r = rtii_find(iot, ioh);
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bus_space_unmap(iot, ioh, iosize);
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if (r != 0) {
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = iosize;
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ia->ia_niomem = 0;
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ia->ia_nirq = 0;
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ia->ia_ndrq = 0;
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return (1);
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}
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return (0);
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}
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void
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rtii_attach(device_t parent, device_t self, void *aux)
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{
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struct rtii_softc *sc = device_private(self);
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struct isa_attach_args *ia = aux;
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sc->tea.iot = ia->ia_iot;
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sc->tea.flags = 0;
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sc->mute = 0;
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sc->vol = 0;
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sc->freq = MIN_FM_FREQ;
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sc->stereo = TEA5757_STEREO;
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sc->lock = TEA5757_S030;
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/* remap I/O */
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if (bus_space_map(sc->tea.iot, ia->ia_io[0].ir_addr,
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ia->ia_io[0].ir_size, 0, &sc->tea.ioh))
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panic("rtiiattach: bus_space_map() failed");
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sc->tea.offset = 0;
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sc->tea.init = rtii_init;
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sc->tea.rset = rtii_rset;
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sc->tea.write_bit = rtii_write_bit;
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sc->tea.read = rtii_hw_read;
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printf(": AIMS Lab Radiotrack II\n");
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tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq);
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rtii_set_mute(sc);
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radio_attach_mi(&rtii_hw_if, sc, self);
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}
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/*
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* Mute/unmute the card
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*/
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void
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rtii_set_mute(struct rtii_softc *sc)
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{
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u_int8_t mute;
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mute = (sc->mute || !sc->vol) ? RTII_MUTE : RTII_UNMUTE;
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bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute);
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DELAY(6);
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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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rtii_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
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u_int32_t d)
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{
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bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF);
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bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON);
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bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON);
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}
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void
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rtii_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
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u_int32_t d)
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{
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bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF);
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}
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int
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rtii_find(bus_space_tag_t iot, bus_space_handle_t ioh)
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{
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struct rtii_softc sc;
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u_int32_t freq;
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sc.tea.iot = iot;
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sc.tea.ioh = ioh;
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sc.tea.offset = 0;
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sc.tea.init = rtii_init;
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sc.tea.rset = rtii_rset;
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sc.tea.write_bit = rtii_write_bit;
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sc.tea.read = rtii_hw_read;
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sc.lock = TEA5757_S030;
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sc.stereo = TEA5757_STEREO;
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/*
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* Let's try to write and read a frequency.
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* If the written and read frequencies are
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* the same then success.
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*/
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sc.freq = MIN_FM_FREQ;
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tea5757_set_freq(&sc.tea, sc.stereo, sc.lock, sc.freq);
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rtii_set_mute(&sc);
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freq = rtii_hw_read(iot, ioh, sc.tea.offset);
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if (tea5757_decode_freq(freq, 0) == sc.freq)
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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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rtii_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit)
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{
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u_int8_t data;
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data = bit ? RTII_DATA_ON : RTII_DATA_OFF;
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bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data);
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bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_ON | data);
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bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data);
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}
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u_int32_t
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rtii_hw_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off)
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{
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u_int8_t i;
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u_int32_t res = 0;
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bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW);
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DELAY(6);
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i = 24;
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while ( i-- ) {
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bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_HIGH);
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DELAY(6);
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bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW);
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res |= bus_space_read_1(iot, ioh, off) & RTII_DATA_ON ? 1 : 0;
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DELAY(6);
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res <<= 1;
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}
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return (res & (TEA5757_DATA | TEA5757_FREQ)) >> 1;
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}
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int
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rtii_get_info(void *v, struct radio_info *ri)
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{
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struct rtii_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 = RTII_CAPABILITIES;
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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(rtii_hw_read(sc->tea.iot,
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sc->tea.ioh, sc->tea.offset), 0);
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switch (bus_space_read_1(sc->tea.iot, sc->tea.ioh, 0)) {
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case 0xFD:
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ri->info = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO;
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break;
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case 0xFF:
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ri->info = 0;
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break;
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default:
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ri->info = RADIO_INFO_SIGNAL;
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}
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return (0);
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}
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int
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rtii_set_info(void *v, struct radio_info *ri)
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{
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struct rtii_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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rtii_set_mute(sc);
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return (0);
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}
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int
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rtii_search(void *v, int f)
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{
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struct rtii_softc *sc = v;
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tea5757_search(&sc->tea, sc->lock, sc->stereo, f);
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rtii_set_mute(sc);
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return (0);
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}
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