The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/isa/ad1816.c

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    1 /*-
    2  * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
    3  * Copyright (c) 1997,1998 Luigi Rizzo
    4  * Copyright (c) 1994,1995 Hannu Savolainen
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #ifdef HAVE_KERNEL_OPTION_HEADERS
   30 #include "opt_snd.h"
   31 #endif
   32 
   33 #include <dev/sound/pcm/sound.h>
   34 #include <dev/sound/isa/ad1816.h>
   35 
   36 #include <isa/isavar.h>
   37 
   38 #include "mixer_if.h"
   39 
   40 SND_DECLARE_FILE("$FreeBSD: stable/11/sys/dev/sound/isa/ad1816.c 331722 2018-03-29 02:50:57Z eadler $");
   41 
   42 struct ad1816_info;
   43 
   44 struct ad1816_chinfo {
   45         struct ad1816_info *parent;
   46         struct pcm_channel *channel;
   47         struct snd_dbuf *buffer;
   48         int dir, blksz;
   49 };
   50 
   51 struct ad1816_info {
   52         struct resource *io_base;       /* primary I/O address for the board */
   53         int io_rid;
   54         struct resource *irq;
   55         int irq_rid;
   56         struct resource *drq1;          /* play */
   57         int drq1_rid;
   58         struct resource *drq2;          /* rec */
   59         int drq2_rid;
   60         void *ih;
   61         bus_dma_tag_t parent_dmat;
   62         struct mtx *lock;
   63 
   64         unsigned int bufsize;
   65         struct ad1816_chinfo pch, rch;
   66 };
   67 
   68 static u_int32_t ad1816_fmt[] = {
   69         SND_FORMAT(AFMT_U8, 1, 0),
   70         SND_FORMAT(AFMT_U8, 2, 0),
   71         SND_FORMAT(AFMT_S16_LE, 1, 0),
   72         SND_FORMAT(AFMT_S16_LE, 2, 0),
   73         SND_FORMAT(AFMT_MU_LAW, 1, 0),
   74         SND_FORMAT(AFMT_MU_LAW, 2, 0),
   75         SND_FORMAT(AFMT_A_LAW, 1, 0),
   76         SND_FORMAT(AFMT_A_LAW, 2, 0),
   77         0
   78 };
   79 
   80 static struct pcmchan_caps ad1816_caps = {4000, 55200, ad1816_fmt, 0};
   81 
   82 #define AD1816_MUTE 31          /* value for mute */
   83 
   84 static void
   85 ad1816_lock(struct ad1816_info *ad1816)
   86 {
   87         snd_mtxlock(ad1816->lock);
   88 }
   89 
   90 static void
   91 ad1816_unlock(struct ad1816_info *ad1816)
   92 {
   93         snd_mtxunlock(ad1816->lock);
   94 }
   95 
   96 static int
   97 port_rd(struct resource *port, int off)
   98 {
   99         if (port)
  100                 return bus_space_read_1(rman_get_bustag(port),
  101                                         rman_get_bushandle(port),
  102                                         off);
  103         else
  104                 return -1;
  105 }
  106 
  107 static void
  108 port_wr(struct resource *port, int off, u_int8_t data)
  109 {
  110         if (port)
  111                 bus_space_write_1(rman_get_bustag(port),
  112                                   rman_get_bushandle(port),
  113                                   off, data);
  114 }
  115 
  116 static int
  117 io_rd(struct ad1816_info *ad1816, int reg)
  118 {
  119         return port_rd(ad1816->io_base, reg);
  120 }
  121 
  122 static void
  123 io_wr(struct ad1816_info *ad1816, int reg, u_int8_t data)
  124 {
  125         port_wr(ad1816->io_base, reg, data);
  126 }
  127 
  128 static void
  129 ad1816_intr(void *arg)
  130 {
  131         struct ad1816_info *ad1816 = (struct ad1816_info *)arg;
  132         unsigned char   c, served = 0;
  133 
  134         ad1816_lock(ad1816);
  135         /* get interrupt status */
  136         c = io_rd(ad1816, AD1816_INT);
  137 
  138         /* check for stray interrupts */
  139         if (c & ~(AD1816_INTRCI | AD1816_INTRPI)) {
  140                 printf("pcm: stray int (%x)\n", c);
  141                 c &= AD1816_INTRCI | AD1816_INTRPI;
  142         }
  143         /* check for capture interrupt */
  144         if (sndbuf_runsz(ad1816->rch.buffer) && (c & AD1816_INTRCI)) {
  145                 ad1816_unlock(ad1816);
  146                 chn_intr(ad1816->rch.channel);
  147                 ad1816_lock(ad1816);
  148                 served |= AD1816_INTRCI;                /* cp served */
  149         }
  150         /* check for playback interrupt */
  151         if (sndbuf_runsz(ad1816->pch.buffer) && (c & AD1816_INTRPI)) {
  152                 ad1816_unlock(ad1816);
  153                 chn_intr(ad1816->pch.channel);
  154                 ad1816_lock(ad1816);
  155                 served |= AD1816_INTRPI;                /* pb served */
  156         }
  157         if (served == 0) {
  158                 /* this probably means this is not a (working) ad1816 chip, */
  159                 /* or an error in dma handling                              */
  160                 printf("pcm: int without reason (%x)\n", c);
  161                 c = 0;
  162         } else c &= ~served;
  163         io_wr(ad1816, AD1816_INT, c);
  164         c = io_rd(ad1816, AD1816_INT);
  165         if (c != 0) printf("pcm: int clear failed (%x)\n", c);
  166         ad1816_unlock(ad1816);
  167 }
  168 
  169 static int
  170 ad1816_wait_init(struct ad1816_info *ad1816, int x)
  171 {
  172         int             n = 0;  /* to shut up the compiler... */
  173 
  174         for (; x--;)
  175                 if ((n = (io_rd(ad1816, AD1816_ALE) & AD1816_BUSY)) == 0) DELAY(10);
  176                 else return n;
  177         printf("ad1816_wait_init failed 0x%02x.\n", n);
  178         return -1;
  179 }
  180 
  181 static unsigned short
  182 ad1816_read(struct ad1816_info *ad1816, unsigned int reg)
  183 {
  184         u_short         x = 0;
  185 
  186         if (ad1816_wait_init(ad1816, 100) == -1) return 0;
  187         io_wr(ad1816, AD1816_ALE, 0);
  188         io_wr(ad1816, AD1816_ALE, (reg & AD1816_ALEMASK));
  189         if (ad1816_wait_init(ad1816, 100) == -1) return 0;
  190         x = (io_rd(ad1816, AD1816_HIGH) << 8) | io_rd(ad1816, AD1816_LOW);
  191         return x;
  192 }
  193 
  194 static void
  195 ad1816_write(struct ad1816_info *ad1816, unsigned int reg, unsigned short data)
  196 {
  197         if (ad1816_wait_init(ad1816, 100) == -1) return;
  198         io_wr(ad1816, AD1816_ALE, (reg & AD1816_ALEMASK));
  199         io_wr(ad1816, AD1816_LOW,  (data & 0x000000ff));
  200         io_wr(ad1816, AD1816_HIGH, (data & 0x0000ff00) >> 8);
  201 }
  202 
  203 /* -------------------------------------------------------------------- */
  204 
  205 static int
  206 ad1816mix_init(struct snd_mixer *m)
  207 {
  208         mix_setdevs(m, AD1816_MIXER_DEVICES);
  209         mix_setrecdevs(m, AD1816_REC_DEVICES);
  210         return 0;
  211 }
  212 
  213 static int
  214 ad1816mix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
  215 {
  216         struct ad1816_info *ad1816 = mix_getdevinfo(m);
  217         u_short reg = 0;
  218 
  219         /* Scale volumes */
  220         left = AD1816_MUTE - (AD1816_MUTE * left) / 100;
  221         right = AD1816_MUTE - (AD1816_MUTE * right) / 100;
  222 
  223         reg = (left << 8) | right;
  224 
  225         /* do channel selective muting if volume is zero */
  226         if (left == AD1816_MUTE)        reg |= 0x8000;
  227         if (right == AD1816_MUTE)       reg |= 0x0080;
  228 
  229         ad1816_lock(ad1816);
  230         switch (dev) {
  231         case SOUND_MIXER_VOLUME:        /* Register 14 master volume */
  232                 ad1816_write(ad1816, 14, reg);
  233                 break;
  234 
  235         case SOUND_MIXER_CD:    /* Register 15 cd */
  236         case SOUND_MIXER_LINE1:
  237                 ad1816_write(ad1816, 15, reg);
  238                 break;
  239 
  240         case SOUND_MIXER_SYNTH: /* Register 16 synth */
  241                 ad1816_write(ad1816, 16, reg);
  242                 break;
  243 
  244         case SOUND_MIXER_PCM:   /* Register 4 pcm */
  245                 ad1816_write(ad1816, 4, reg);
  246                 break;
  247 
  248         case SOUND_MIXER_LINE:
  249         case SOUND_MIXER_LINE3: /* Register 18 line in */
  250                 ad1816_write(ad1816, 18, reg);
  251                 break;
  252 
  253         case SOUND_MIXER_MIC:   /* Register 19 mic volume */
  254                 ad1816_write(ad1816, 19, reg & ~0xff);  /* mic is mono */
  255                 break;
  256 
  257         case SOUND_MIXER_IGAIN:
  258                 /* and now to something completely different ... */
  259                 ad1816_write(ad1816, 20, ((ad1816_read(ad1816, 20) & ~0x0f0f)
  260                 | (((AD1816_MUTE - left) / 2) << 8) /* four bits of adc gain */
  261                 | ((AD1816_MUTE - right) / 2)));
  262                 break;
  263 
  264         default:
  265                 printf("ad1816_mixer_set(): unknown device.\n");
  266                 break;
  267         }
  268         ad1816_unlock(ad1816);
  269 
  270         left = ((AD1816_MUTE - left) * 100) / AD1816_MUTE;
  271         right = ((AD1816_MUTE - right) * 100) / AD1816_MUTE;
  272 
  273         return left | (right << 8);
  274 }
  275 
  276 static u_int32_t
  277 ad1816mix_setrecsrc(struct snd_mixer *m, u_int32_t src)
  278 {
  279         struct ad1816_info *ad1816 = mix_getdevinfo(m);
  280         int dev;
  281 
  282         switch (src) {
  283         case SOUND_MASK_LINE:
  284         case SOUND_MASK_LINE3:
  285                 dev = 0x00;
  286                 break;
  287 
  288         case SOUND_MASK_CD:
  289         case SOUND_MASK_LINE1:
  290                 dev = 0x20;
  291                 break;
  292 
  293         case SOUND_MASK_MIC:
  294         default:
  295                 dev = 0x50;
  296                 src = SOUND_MASK_MIC;
  297         }
  298 
  299         dev |= dev << 8;
  300         ad1816_lock(ad1816);
  301         ad1816_write(ad1816, 20, (ad1816_read(ad1816, 20) & ~0x7070) | dev);
  302         ad1816_unlock(ad1816);
  303         return src;
  304 }
  305 
  306 static kobj_method_t ad1816mixer_methods[] = {
  307         KOBJMETHOD(mixer_init,          ad1816mix_init),
  308         KOBJMETHOD(mixer_set,           ad1816mix_set),
  309         KOBJMETHOD(mixer_setrecsrc,     ad1816mix_setrecsrc),
  310         KOBJMETHOD_END
  311 };
  312 MIXER_DECLARE(ad1816mixer);
  313 
  314 /* -------------------------------------------------------------------- */
  315 /* channel interface */
  316 static void *
  317 ad1816chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
  318 {
  319         struct ad1816_info *ad1816 = devinfo;
  320         struct ad1816_chinfo *ch = (dir == PCMDIR_PLAY)? &ad1816->pch : &ad1816->rch;
  321 
  322         ch->dir = dir;
  323         ch->parent = ad1816;
  324         ch->channel = c;
  325         ch->buffer = b;
  326         if (sndbuf_alloc(ch->buffer, ad1816->parent_dmat, 0, ad1816->bufsize) != 0)
  327                 return NULL;
  328 
  329         sndbuf_dmasetup(ch->buffer, (dir == PCMDIR_PLAY) ? ad1816->drq1 :
  330             ad1816->drq2);
  331         if (SND_DMA(ch->buffer))
  332                 sndbuf_dmasetdir(ch->buffer, dir);
  333 
  334         return ch;
  335 }
  336 
  337 static int
  338 ad1816chan_setformat(kobj_t obj, void *data, u_int32_t format)
  339 {
  340         struct ad1816_chinfo *ch = data;
  341         struct ad1816_info *ad1816 = ch->parent;
  342         int fmt = AD1816_U8, reg;
  343 
  344         ad1816_lock(ad1816);
  345         if (ch->dir == PCMDIR_PLAY) {
  346                 reg = AD1816_PLAY;
  347                 ad1816_write(ad1816, 8, 0x0000);        /* reset base and current counter */
  348                 ad1816_write(ad1816, 9, 0x0000);        /* for playback and capture */
  349         } else {
  350                 reg = AD1816_CAPT;
  351                 ad1816_write(ad1816, 10, 0x0000);
  352                 ad1816_write(ad1816, 11, 0x0000);
  353         }
  354         switch (AFMT_ENCODING(format)) {
  355         case AFMT_A_LAW:
  356                 fmt = AD1816_ALAW;
  357                 break;
  358 
  359         case AFMT_MU_LAW:
  360                 fmt = AD1816_MULAW;
  361                 break;
  362 
  363         case AFMT_S16_LE:
  364                 fmt = AD1816_S16LE;
  365                 break;
  366 
  367         case AFMT_S16_BE:
  368                 fmt = AD1816_S16BE;
  369                 break;
  370 
  371         case AFMT_U8:
  372                 fmt = AD1816_U8;
  373                 break;
  374         }
  375         if (AFMT_CHANNEL(format) > 1) fmt |= AD1816_STEREO;
  376         io_wr(ad1816, reg, fmt);
  377         ad1816_unlock(ad1816);
  378 #if 0
  379         return format;
  380 #else
  381         return 0;
  382 #endif
  383 }
  384 
  385 static u_int32_t
  386 ad1816chan_setspeed(kobj_t obj, void *data, u_int32_t speed)
  387 {
  388         struct ad1816_chinfo *ch = data;
  389         struct ad1816_info *ad1816 = ch->parent;
  390 
  391         RANGE(speed, 4000, 55200);
  392         ad1816_lock(ad1816);
  393         ad1816_write(ad1816, (ch->dir == PCMDIR_PLAY)? 2 : 3, speed);
  394         ad1816_unlock(ad1816);
  395         return speed;
  396 }
  397 
  398 static u_int32_t
  399 ad1816chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
  400 {
  401         struct ad1816_chinfo *ch = data;
  402 
  403         ch->blksz = blocksize;
  404         return ch->blksz;
  405 }
  406 
  407 static int
  408 ad1816chan_trigger(kobj_t obj, void *data, int go)
  409 {
  410         struct ad1816_chinfo *ch = data;
  411         struct ad1816_info *ad1816 = ch->parent;
  412         int wr, reg;
  413 
  414         if (!PCMTRIG_COMMON(go))
  415                 return 0;
  416 
  417         sndbuf_dma(ch->buffer, go);
  418         wr = (ch->dir == PCMDIR_PLAY);
  419         reg = wr? AD1816_PLAY : AD1816_CAPT;
  420         ad1816_lock(ad1816);
  421         switch (go) {
  422         case PCMTRIG_START:
  423                 /* start only if not already running */
  424                 if (!(io_rd(ad1816, reg) & AD1816_ENABLE)) {
  425                         int cnt = ((ch->blksz) >> 2) - 1;
  426                         ad1816_write(ad1816, wr? 8 : 10, cnt); /* count */
  427                         ad1816_write(ad1816, wr? 9 : 11, 0); /* reset cur cnt */
  428                         ad1816_write(ad1816, 1, ad1816_read(ad1816, 1) |
  429                                      (wr? 0x8000 : 0x4000)); /* enable int */
  430                         /* enable playback */
  431                         io_wr(ad1816, reg, io_rd(ad1816, reg) | AD1816_ENABLE);
  432                         if (!(io_rd(ad1816, reg) & AD1816_ENABLE))
  433                                 printf("ad1816: failed to start %s DMA!\n",
  434                                        wr? "play" : "rec");
  435                 }
  436                 break;
  437 
  438         case PCMTRIG_STOP:
  439         case PCMTRIG_ABORT:             /* XXX check this... */
  440                 /* we don't test here if it is running... */
  441                 if (wr) {
  442                         ad1816_write(ad1816, 1, ad1816_read(ad1816, 1) &
  443                                      ~(wr? 0x8000 : 0x4000));
  444                         /* disable int */
  445                         io_wr(ad1816, reg, io_rd(ad1816, reg) & ~AD1816_ENABLE);
  446                         /* disable playback */
  447                         if (io_rd(ad1816, reg) & AD1816_ENABLE)
  448                                 printf("ad1816: failed to stop %s DMA!\n",
  449                                        wr? "play" : "rec");
  450                         ad1816_write(ad1816, wr? 8 : 10, 0); /* reset base cnt */
  451                         ad1816_write(ad1816, wr? 9 : 11, 0); /* reset cur cnt */
  452                 }
  453                 break;
  454         }
  455         ad1816_unlock(ad1816);
  456         return 0;
  457 }
  458 
  459 static u_int32_t
  460 ad1816chan_getptr(kobj_t obj, void *data)
  461 {
  462         struct ad1816_chinfo *ch = data;
  463         return sndbuf_dmaptr(ch->buffer);
  464 }
  465 
  466 static struct pcmchan_caps *
  467 ad1816chan_getcaps(kobj_t obj, void *data)
  468 {
  469         return &ad1816_caps;
  470 }
  471 
  472 static kobj_method_t ad1816chan_methods[] = {
  473         KOBJMETHOD(channel_init,                ad1816chan_init),
  474         KOBJMETHOD(channel_setformat,           ad1816chan_setformat),
  475         KOBJMETHOD(channel_setspeed,            ad1816chan_setspeed),
  476         KOBJMETHOD(channel_setblocksize,        ad1816chan_setblocksize),
  477         KOBJMETHOD(channel_trigger,             ad1816chan_trigger),
  478         KOBJMETHOD(channel_getptr,              ad1816chan_getptr),
  479         KOBJMETHOD(channel_getcaps,             ad1816chan_getcaps),
  480         KOBJMETHOD_END
  481 };
  482 CHANNEL_DECLARE(ad1816chan);
  483 
  484 /* -------------------------------------------------------------------- */
  485 
  486 static void
  487 ad1816_release_resources(struct ad1816_info *ad1816, device_t dev)
  488 {
  489         if (ad1816->irq) {
  490                 if (ad1816->ih)
  491                         bus_teardown_intr(dev, ad1816->irq, ad1816->ih);
  492                 bus_release_resource(dev, SYS_RES_IRQ, ad1816->irq_rid, ad1816->irq);
  493                 ad1816->irq = NULL;
  494         }
  495         if (ad1816->drq1) {
  496                 isa_dma_release(rman_get_start(ad1816->drq1));
  497                 bus_release_resource(dev, SYS_RES_DRQ, ad1816->drq1_rid, ad1816->drq1);
  498                 ad1816->drq1 = NULL;
  499         }
  500         if (ad1816->drq2) {
  501                 isa_dma_release(rman_get_start(ad1816->drq2));
  502                 bus_release_resource(dev, SYS_RES_DRQ, ad1816->drq2_rid, ad1816->drq2);
  503                 ad1816->drq2 = NULL;
  504         }
  505         if (ad1816->io_base) {
  506                 bus_release_resource(dev, SYS_RES_IOPORT, ad1816->io_rid, ad1816->io_base);
  507                 ad1816->io_base = NULL;
  508         }
  509         if (ad1816->parent_dmat) {
  510                 bus_dma_tag_destroy(ad1816->parent_dmat);
  511                 ad1816->parent_dmat = 0;
  512         }
  513         if (ad1816->lock)
  514                 snd_mtxfree(ad1816->lock);
  515 
  516         free(ad1816, M_DEVBUF);
  517 }
  518 
  519 static int
  520 ad1816_alloc_resources(struct ad1816_info *ad1816, device_t dev)
  521 {
  522         int ok = 1, pdma, rdma;
  523 
  524         if (!ad1816->io_base)
  525                 ad1816->io_base = bus_alloc_resource_any(dev, 
  526                         SYS_RES_IOPORT, &ad1816->io_rid, RF_ACTIVE);
  527         if (!ad1816->irq)
  528                 ad1816->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  529                         &ad1816->irq_rid, RF_ACTIVE);
  530         if (!ad1816->drq1)
  531                 ad1816->drq1 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
  532                         &ad1816->drq1_rid, RF_ACTIVE);
  533         if (!ad1816->drq2)
  534                 ad1816->drq2 = bus_alloc_resource_any(dev, SYS_RES_DRQ, 
  535                         &ad1816->drq2_rid, RF_ACTIVE);
  536 
  537         if (!ad1816->io_base || !ad1816->drq1 || !ad1816->irq) ok = 0;
  538 
  539         if (ok) {
  540                 pdma = rman_get_start(ad1816->drq1);
  541                 isa_dma_acquire(pdma);
  542                 isa_dmainit(pdma, ad1816->bufsize);
  543                 if (ad1816->drq2) {
  544                         rdma = rman_get_start(ad1816->drq2);
  545                         isa_dma_acquire(rdma);
  546                         isa_dmainit(rdma, ad1816->bufsize);
  547                 } else
  548                         rdma = pdma;
  549                 if (pdma == rdma)
  550                         pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
  551         }
  552 
  553         return ok;
  554 }
  555 
  556 static int
  557 ad1816_init(struct ad1816_info *ad1816, device_t dev)
  558 {
  559         ad1816_write(ad1816, 1, 0x2);   /* disable interrupts */
  560         ad1816_write(ad1816, 32, 0x90F0);       /* SoundSys Mode, split fmt */
  561 
  562         ad1816_write(ad1816, 5, 0x8080);        /* FM volume mute */
  563         ad1816_write(ad1816, 6, 0x8080);        /* I2S1 volume mute */
  564         ad1816_write(ad1816, 7, 0x8080);        /* I2S0 volume mute */
  565         ad1816_write(ad1816, 17, 0x8888);       /* VID Volume mute */
  566         ad1816_write(ad1816, 20, 0x5050);       /* recsrc mic, agc off */
  567         /* adc gain is set to 0 */
  568 
  569         return 0;
  570 }
  571 
  572 static int
  573 ad1816_probe(device_t dev)
  574 {
  575         char *s = NULL;
  576         u_int32_t logical_id = isa_get_logicalid(dev);
  577 
  578         switch (logical_id) {
  579         case 0x80719304: /* ADS7180 */
  580                 s = "AD1816";
  581                 break;
  582         case 0x50719304: /* ADS7150 */
  583                 s = "AD1815";
  584                 break;
  585         }
  586 
  587         if (s) {
  588                 device_set_desc(dev, s);
  589                 return BUS_PROBE_DEFAULT;
  590         }
  591         return ENXIO;
  592 }
  593 
  594 static int
  595 ad1816_attach(device_t dev)
  596 {
  597         struct ad1816_info *ad1816;
  598         char status[SND_STATUSLEN], status2[SND_STATUSLEN];
  599 
  600         ad1816 = malloc(sizeof(*ad1816), M_DEVBUF, M_WAITOK | M_ZERO);
  601         ad1816->lock = snd_mtxcreate(device_get_nameunit(dev),
  602             "snd_ad1816 softc");
  603         ad1816->io_rid = 2;
  604         ad1816->irq_rid = 0;
  605         ad1816->drq1_rid = 0;
  606         ad1816->drq2_rid = 1;
  607         ad1816->bufsize = pcm_getbuffersize(dev, 4096, DSP_BUFFSIZE, 65536);
  608 
  609         if (!ad1816_alloc_resources(ad1816, dev)) goto no;
  610         ad1816_init(ad1816, dev);
  611         if (mixer_init(dev, &ad1816mixer_class, ad1816)) goto no;
  612 
  613         snd_setup_intr(dev, ad1816->irq, 0, ad1816_intr, ad1816, &ad1816->ih);
  614         if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
  615                         /*boundary*/0,
  616                         /*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
  617                         /*highaddr*/BUS_SPACE_MAXADDR,
  618                         /*filter*/NULL, /*filterarg*/NULL,
  619                         /*maxsize*/ad1816->bufsize, /*nsegments*/1,
  620                         /*maxsegz*/0x3ffff,
  621                         /*flags*/0, /*lockfunc*/busdma_lock_mutex,
  622                         /*lockarg*/ &Giant, &ad1816->parent_dmat) != 0) {
  623                 device_printf(dev, "unable to create dma tag\n");
  624                 goto no;
  625         }
  626         if (ad1816->drq2)
  627                 snprintf(status2, SND_STATUSLEN, ":%jd", rman_get_start(ad1816->drq2));
  628         else
  629                 status2[0] = '\0';
  630 
  631         snprintf(status, SND_STATUSLEN, "at io 0x%jx irq %jd drq %jd%s bufsz %u %s",
  632                 rman_get_start(ad1816->io_base),
  633                 rman_get_start(ad1816->irq),
  634                 rman_get_start(ad1816->drq1),
  635                 status2,
  636                 ad1816->bufsize,
  637                 PCM_KLDSTRING(snd_ad1816));
  638 
  639         if (pcm_register(dev, ad1816, 1, 1)) goto no;
  640         pcm_addchan(dev, PCMDIR_REC, &ad1816chan_class, ad1816);
  641         pcm_addchan(dev, PCMDIR_PLAY, &ad1816chan_class, ad1816);
  642         pcm_setstatus(dev, status);
  643 
  644         return 0;
  645 no:
  646         ad1816_release_resources(ad1816, dev);
  647 
  648         return ENXIO;
  649 
  650 }
  651 
  652 static int
  653 ad1816_detach(device_t dev)
  654 {
  655         int r;
  656         struct ad1816_info *ad1816;
  657 
  658         r = pcm_unregister(dev);
  659         if (r)
  660                 return r;
  661 
  662         ad1816 = pcm_getdevinfo(dev);
  663         ad1816_release_resources(ad1816, dev);
  664         return 0;
  665 }
  666 
  667 static device_method_t ad1816_methods[] = {
  668         /* Device interface */
  669         DEVMETHOD(device_probe,         ad1816_probe),
  670         DEVMETHOD(device_attach,        ad1816_attach),
  671         DEVMETHOD(device_detach,        ad1816_detach),
  672 
  673         { 0, 0 }
  674 };
  675 
  676 static driver_t ad1816_driver = {
  677         "pcm",
  678         ad1816_methods,
  679         PCM_SOFTC_SIZE,
  680 };
  681 
  682 DRIVER_MODULE(snd_ad1816, isa, ad1816_driver, pcm_devclass, 0, 0);
  683 DRIVER_MODULE(snd_ad1816, acpi, ad1816_driver, pcm_devclass, 0, 0);
  684 MODULE_DEPEND(snd_ad1816, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
  685 MODULE_VERSION(snd_ad1816, 1);
  686 
  687 

Cache object: 7e59723f3018384cc94709fc02e1199f


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