root/dev/isa/radiotrack2.c

DEFINITIONS

1. rtii_probe
2. rtii_attach
3. rtii_set_mute
4. rtii_init
5. rtii_rset
6. rtii_find
7. rtii_write_bit
8. rtii_hw_read
9. rtii_get_info
10. rtii_set_info
11. rtii_search

    1 /* $OpenBSD: radiotrack2.c,v 1.3 2002/01/07 18:32:19 mickey Exp $ */
    2 /* $RuOBSD: radiotrack2.c,v 1.2 2001/10/18 16:51:36 pva Exp $ */
    4 /*
    5  * Copyright (c) 2001 Maxim Tsyplakov <tm@oganer.net>,
    6  *                    Vladimir Popov <jumbo@narod.ru>
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   28  */
   30 /* AIMS Lab Radiotrack II FM Radio Card device driver */
   32 /*
   33  * Philips TEA5757H AM/FM Self Tuned Radio:
   34  *      http://www.semiconductors.philips.com/pip/TEA5757H
   35  */
   37 #include <sys/param.h>
   38 #include <sys/systm.h>
   39 #include <sys/proc.h>
   40 #include <sys/errno.h>
   41 #include <sys/ioctl.h>
   42 #include <sys/device.h>
   43 #include <sys/radioio.h>
   45 #include <dev/isa/isavar.h>
   46 #include <dev/radio_if.h>
   47 #include <dev/ic/tea5757.h>
   49 #define RTII_BASE_VALID(x)      ((x == 0x20C) || (x == 0x30C))
   50 #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
   57 #if 0
   58 #define RTII_SIGNAL             (1 << 3)
   59 #define RTII_STEREO             (1 << 3)
   60 #endif /* 0 */
   62 #define RTII_MUTE               0x01
   63 #define RTII_UNMUTE             0x00
   65 #define RTII_RESET              0xC8
   67 #define RTII_DATA_ON            (1 << 2)
   68 #define RTII_DATA_OFF           (0 << 2)
   70 #define RTII_CLCK_ON            (1 << 1)
   71 #define RTII_CLCK_OFF           (0 << 1)
   73 #define RTII_WREN_ON            (0 << 0)
   74 #define RTII_WREN_OFF           (1 << 0)
   76 #define RTII_READ_CLOCK_LOW     (RTII_DATA_ON | RTII_CLCK_OFF | RTII_WREN_OFF)
   77 #define RTII_READ_CLOCK_HIGH    (RTII_DATA_ON | RTII_CLCK_ON | RTII_WREN_OFF)
   79 int     rtii_probe(struct device *, void *, void *);
   80 void    rtii_attach(struct device *, struct device * self, void *);
   82 int     rtii_get_info(void *, struct radio_info *);
   83 int     rtii_set_info(void *, struct radio_info *);
   84 int     rtii_search(void *, int);
   86 /* define our interface to the higher level radio driver */
   87 struct radio_hw_if rtii_hw_if = {
NULL,   /* open */
NULL,   /* close */
rtii_get_info,
rtii_set_info,
rtii_search
   93 };
   95 struct rtii_softc {
   96         struct device   dev;
u_int32_t       freq;
u_int32_t       stereo;
u_int32_t       lock;
u_int8_t        vol;
  102         int     mute;
  104         struct tea5757_t        tea;
  105 };
  107 struct cfattach rtii_ca = {
  108         sizeof(struct rtii_softc), rtii_probe, rtii_attach
  109 };
  111 struct cfdriver rtii_cd = {
NULL, "rtii", DV_DULL
  113 };
  115 void    rtii_set_mute(struct rtii_softc *);
  116 int     rtii_find(bus_space_tag_t, bus_space_handle_t, int);
u_int32_t       rtii_hw_read(bus_space_tag_t, bus_space_handle_t, bus_size_t);
  120 void    rtii_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
  121 void    rtii_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
  122 void    rtii_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int);
  124 int
rtii_probe(struct device *parent, void *match, void *aux)
  126 {
  127         struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh;
  130         struct cfdata *cf = match;
  131         int iosize = 1, iobase = ia->ia_iobase;
  133         if (!RTII_BASE_VALID(iobase)) {
printf("rtii: configured iobase 0x%x invalid\n", iobase);
  135                 return (0);
  136         }
  138         if (bus_space_map(iot, iobase, iosize, 0, &ioh))
  139                 return (0);
  141         if (!rtii_find(iot, ioh, cf->cf_flags)) {
bus_space_unmap(iot, ioh, iosize);
  143                 return (0);
  144         }
bus_space_unmap(iot, ioh, iosize);
ia->ia_iosize = iosize;
  148         return (1);
  149 }
  151 void
rtii_attach(struct device *parent, struct device *self, void *aux)
  153 {
  154         struct rtii_softc *sc = (void *) self;
  155         struct isa_attach_args *ia = aux;
  156         struct cfdata *cf = sc->dev.dv_cfdata;
sc->tea.iot = ia->ia_iot;
sc->mute = 0;
sc->vol = 0;
sc->freq = MIN_FM_FREQ;
sc->stereo = TEA5757_STEREO;
sc->lock = TEA5757_S030;
  165         /* remap I/O */
  166         if (bus_space_map(sc->tea.iot, ia->ia_iobase, ia->ia_iosize,
  167                           0, &sc->tea.ioh)) {
printf(": bus_space_map() failed\n");
  169                 return;
  170         }
sc->tea.offset = 0;
sc->tea.flags = cf->cf_flags;
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);
  185 }
  187 /*
  188  * Mute/unmute the card
  189  */
  190 void
rtii_set_mute(struct rtii_softc *sc)
  192 {
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);
  199 }
  201 void
rtii_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d)
  203 {
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);
  207 }
  209 void
rtii_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d)
  211 {
bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF);
  213 }
  215 int
rtii_find(bus_space_tag_t iot, bus_space_handle_t ioh, int flags)
  217 {
  218         struct rtii_softc sc;
u_int32_t freq;
sc.tea.iot = iot;
sc.tea.ioh = ioh;
sc.tea.offset = 0;
sc.tea.flags = flags;
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;
  232         /*
  233          * Let's try to write and read a frequency.
  234          * If the written and read frequencies are
  235          * the same then success.
  236          */
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);
  241         if (tea5757_decode_freq(freq, sc.tea.flags & TEA5757_TEA5759)
  242                         == sc.freq)
  243                 return 1;
  245         return 0;
  246 }
  248 void
rtii_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit)
  250 {
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);
  258 }
u_int32_t
rtii_hw_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off)
  262 {
u_int8_t i;
u_int32_t res = 0;
bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW);
DELAY(6);
i = 24;
  270         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;
  277         }
  279         return (res & (TEA5757_DATA | TEA5757_FREQ)) >> 1;
  280 }
  282 int
rtii_get_info(void *v, struct radio_info *ri)
  284 {
  285         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), sc->tea.flags & TEA5757_TEA5759);
  297         switch (bus_space_read_1(sc->tea.iot, sc->tea.ioh, 0)) {
  298         case 0xFD:
ri->info = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO;
  300                 break;
  301         case 0xFF:
ri->info = 0;
  303                 break;
  304         default:
ri->info = RADIO_INFO_SIGNAL;
  306         }
  308         return (0);
  309 }
  311 int
rtii_set_info(void *v, struct radio_info *ri)
  313 {
  314         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);
  324         return (0);
  325 }
  327 int
rtii_search(void *v, int f)
  329 {
  330         struct rtii_softc *sc = v;
tea5757_search(&sc->tea, sc->lock, sc->stereo, f);
rtii_set_mute(sc);
  335         return (0);
  336 }