NetBSD/sys/dev/isa/radiotrack2.c

344 lines
8.5 KiB
C

/* $NetBSD: radiotrack2.c,v 1.8 2002/10/02 03:10:50 thorpej 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 <tm@oganer.net>,
* Vladimir Popov <jumbo@narod.ru>
* 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/device.h>
#include <sys/radioio.h>
#include <dev/isa/isavar.h>
#include <dev/radio_if.h>
#include <dev/ic/tea5757.h>
#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(struct device *, struct cfdata *, void *);
void rtii_attach(struct device *, struct device * 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 */
struct radio_hw_if rtii_hw_if = {
NULL, /* open */
NULL, /* close */
rtii_get_info,
rtii_set_info,
rtii_search
};
struct rtii_softc {
struct device dev;
u_int32_t freq;
u_int32_t stereo;
u_int32_t lock;
u_int8_t vol;
int mute;
struct tea5757_t tea;
};
CFATTACH_DECL(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(struct device *parent, struct cfdata *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(struct device *parent, struct device *self, void *aux)
{
struct rtii_softc *sc = (void *) 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, &sc->dev);
}
/*
* 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);
}