NetBSD/sys/dev/isa/aztech.c

359 lines
8.3 KiB
C

/* $NetBSD: aztech.c,v 1.4 2002/01/07 21:47:15 thorpej Exp $ */
/* $OpenBSD: aztech.c,v 1.2 2001/12/05 10:27:06 mickey Exp $ */
/* $RuOBSD: aztech.c,v 1.11 2001/10/20 13:23:47 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.
*/
/* Aztech/PackardBell FM Radio Card device driver */
/*
* Sanyo LM7001J Direct PLL Frequency Synthesizer:
* ??? See http://www.redsword.com/tjacobs/geeb/fmcard.htm
*
* Philips TEA5712T AM/FM Stereo DTS Radio:
* http://www.semiconductors.philips.com/pip/TEA5712
*/
#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 <machine/bus.h>
#include <dev/isa/isavar.h>
#include <dev/ic/lm700x.h>
#include <dev/radio_if.h>
#define RF_25K 25
#define RF_50K 50
#define RF_100K 100
#define MAX_VOL 3
#define VOLUME_RATIO(x) (255 * x / MAX_VOL)
#define AZ_BASE_VALID(x) ((x == 0x350) || (x == 0x358))
#define AZTECH_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \
RADIO_CAPS_DETECT_SIGNAL | \
RADIO_CAPS_SET_MONO | \
RADIO_CAPS_REFERENCE_FREQ
#define AZ_WREN_ON (1 << 1)
#define AZ_WREN_OFF (0 << 1)
#define AZ_CLCK_ON (1 << 6)
#define AZ_CLCK_OFF (0 << 6)
#define AZ_DATA_ON (1 << 7)
#define AZ_DATA_OFF (0 << 7)
int az_probe(struct device *, struct cfdata *, void *);
void az_attach(struct device *, struct device * self, void *);
int az_get_info(void *, struct radio_info *);
int az_set_info(void *, struct radio_info *);
struct radio_hw_if az_hw_if = {
NULL, /* open */
NULL, /* close */
az_get_info,
az_set_info,
NULL
};
struct az_softc {
struct device sc_dev;
int mute;
u_int8_t vol;
u_int32_t freq;
u_int32_t rf;
u_int32_t stereo;
struct lm700x_t lm;
};
struct cfattach az_ca = {
sizeof(struct az_softc), az_probe, az_attach
};
u_int az_find(bus_space_tag_t, bus_space_handle_t);
void az_set_mute(struct az_softc *);
void az_set_freq(struct az_softc *, u_int32_t);
u_int8_t az_state(bus_space_tag_t, bus_space_handle_t);
void az_lm700x_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
void az_lm700x_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
u_int8_t az_conv_vol(u_int8_t);
u_int8_t az_unconv_vol(u_int8_t);
int
az_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 (!AZ_BASE_VALID(iobase)) {
printf("az: configured iobase 0x%x invalid", iobase);
return 0;
}
if (bus_space_map(iot, iobase, iosize, 0, &ioh))
return 0;
r = az_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
az_attach(struct device *parent, struct device *self, void *aux)
{
struct az_softc *sc = (void *)self;
struct isa_attach_args *ia = aux;
sc->lm.iot = ia->ia_iot;
sc->rf = LM700X_REF_050;
sc->stereo = LM700X_STEREO;
sc->mute = 0;
sc->freq = MIN_FM_FREQ;
sc->vol = 0;
/* remap I/O */
if (bus_space_map(sc->lm.iot, ia->ia_io[0].ir_addr,
ia->ia_io[0].ir_size, 0, &sc->lm.ioh))
panic(": bus_space_map() of %s failed", sc->sc_dev.dv_xname);
printf(": Aztech/PackardBell\n");
/* Configure struct lm700x_t lm */
sc->lm.offset = 0;
sc->lm.wzcl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_OFF;
sc->lm.wzch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_OFF;
sc->lm.wocl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_ON;
sc->lm.woch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_ON;
sc->lm.initdata = 0;
sc->lm.rsetdata = AZ_DATA_ON | AZ_CLCK_ON | AZ_WREN_OFF;
sc->lm.init = az_lm700x_init;
sc->lm.rset = az_lm700x_rset;
az_set_freq(sc, sc->freq);
radio_attach_mi(&az_hw_if, sc, &sc->sc_dev);
}
/*
* Mute the card
*/
void
az_set_mute(struct az_softc *sc)
{
bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0,
sc->mute ? 0 : sc->vol);
delay(6);
bus_space_write_1(sc->lm.iot, sc->lm.ioh, 0,
sc->mute ? 0 : sc->vol);
}
void
az_set_freq(struct az_softc *sc, u_int32_t nfreq)
{
u_int8_t vol;
u_int32_t reg;
vol = sc->mute ? 0 : sc->vol;
if (nfreq > MAX_FM_FREQ)
nfreq = MAX_FM_FREQ;
if (nfreq < MIN_FM_FREQ)
nfreq = MIN_FM_FREQ;
sc->freq = nfreq;
reg = lm700x_encode_freq(nfreq, sc->rf);
reg |= sc->stereo | sc->rf | LM700X_DIVIDER_FM;
lm700x_hardware_write(&sc->lm, reg, vol);
az_set_mute(sc);
}
/*
* Return state of the card - tuned/not tuned, mono/stereo
*/
u_int8_t
az_state(bus_space_tag_t iot, bus_space_handle_t ioh)
{
return (3 ^ bus_space_read_1(iot, ioh, 0)) & 3;
}
/*
* Convert volume to hardware representation.
* The card uses bits 00000x0x to set volume.
*/
u_int8_t
az_conv_vol(u_int8_t vol)
{
if (vol < VOLUME_RATIO(1))
return 0;
else if (vol >= VOLUME_RATIO(1) && vol < VOLUME_RATIO(2))
return 1;
else if (vol >= VOLUME_RATIO(2) && vol < VOLUME_RATIO(3))
return 4;
else
return 5;
}
/*
* Convert volume from hardware representation
*/
u_int8_t
az_unconv_vol(u_int8_t vol)
{
switch (vol) {
case 0:
return VOLUME_RATIO(0);
case 1:
return VOLUME_RATIO(1);
case 4:
return VOLUME_RATIO(2);
}
return VOLUME_RATIO(3);
}
u_int
az_find(bus_space_tag_t iot, bus_space_handle_t ioh)
{
struct az_softc sc;
u_int i, scanres = 0;
sc.lm.iot = iot;
sc.lm.ioh = ioh;
sc.lm.offset = 0;
sc.lm.wzcl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_OFF;
sc.lm.wzch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_OFF;
sc.lm.wocl = AZ_WREN_ON | AZ_CLCK_OFF | AZ_DATA_ON;
sc.lm.woch = AZ_WREN_ON | AZ_CLCK_ON | AZ_DATA_ON;
sc.lm.initdata = 0;
sc.lm.rsetdata = AZ_DATA_ON | AZ_CLCK_ON | AZ_WREN_OFF;
sc.lm.init = az_lm700x_init;
sc.lm.rset = az_lm700x_rset;
sc.rf = LM700X_REF_050;
sc.mute = 0;
sc.stereo = LM700X_STEREO;
sc.vol = 0;
/*
* Scan whole FM range. If there is a card it'll
* respond on some frequency.
*/
for (i = MIN_FM_FREQ; !scanres && i < MAX_FM_FREQ; i += 10) {
az_set_freq(&sc, i);
scanres += 3 - az_state(iot, ioh);
}
return scanres;
}
void
az_lm700x_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
u_int32_t data)
{
/* Do nothing */
return;
}
void
az_lm700x_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
u_int32_t data)
{
bus_space_write_1(iot, ioh, off, data);
}
int
az_get_info(void *v, struct radio_info *ri)
{
struct az_softc *sc = v;
ri->mute = sc->mute;
ri->volume = az_unconv_vol(sc->vol);
ri->stereo = sc->stereo == LM700X_STEREO ? 1 : 0;
ri->caps = AZTECH_CAPABILITIES;
ri->rfreq = lm700x_decode_ref(sc->rf);
ri->info = az_state(sc->lm.iot, sc->lm.ioh);
ri->freq = sc->freq;
/* UNSUPPORTED */
ri->lock = 0;
return (0);
}
int
az_set_info(void *v, struct radio_info *ri)
{
struct az_softc *sc = v;
sc->mute = ri->mute ? 1 : 0;
sc->vol = az_conv_vol(ri->volume);
sc->stereo = ri->stereo ? LM700X_STEREO : LM700X_MONO;
sc->rf = lm700x_encode_ref(ri->rfreq);
az_set_freq(sc, ri->freq);
az_set_mute(sc);
return (0);
}