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  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
    5  * Copyright (c) 1997,1998 Luigi Rizzo
    6  * Copyright (c) 1994,1995 Hannu Savolainen
    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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 #ifdef HAVE_KERNEL_OPTION_HEADERS
   32 #include "opt_snd.h"
   33 #endif
   34 
   35 #include <dev/sound/pcm/sound.h>
   36 #include <dev/sound/isa/ad1816.h>
   37 
   38 #include <isa/isavar.h>
   39 
   40 #include "mixer_if.h"
   41 
   42 SND_DECLARE_FILE("$FreeBSD: stable/12/sys/dev/sound/isa/ad1816.c 326255 2017-11-27 14:52:40Z pfg $");
   43 
   44 struct ad1816_info;
   45 
   46 struct ad1816_chinfo {
   47         struct ad1816_info *parent;
   48         struct pcm_channel *channel;
   49         struct snd_dbuf *buffer;
   50         int dir, blksz;
   51 };
   52 
   53 struct ad1816_info {
   54         struct resource *io_base;       /* primary I/O address for the board */
   55         int io_rid;
   56         struct resource *irq;
   57         int irq_rid;
   58         struct resource *drq1;          /* play */
   59         int drq1_rid;
   60         struct resource *drq2;          /* rec */
   61         int drq2_rid;
   62         void *ih;
   63         bus_dma_tag_t parent_dmat;
   64         struct mtx *lock;
   65 
   66         unsigned int bufsize;
   67         struct ad1816_chinfo pch, rch;
   68 };
   69 
   70 static u_int32_t ad1816_fmt[] = {
   71         SND_FORMAT(AFMT_U8, 1, 0),
   72         SND_FORMAT(AFMT_U8, 2, 0),
   73         SND_FORMAT(AFMT_S16_LE, 1, 0),
   74         SND_FORMAT(AFMT_S16_LE, 2, 0),
   75         SND_FORMAT(AFMT_MU_LAW, 1, 0),
   76         SND_FORMAT(AFMT_MU_LAW, 2, 0),
   77         SND_FORMAT(AFMT_A_LAW, 1, 0),
   78         SND_FORMAT(AFMT_A_LAW, 2, 0),
   79         0
   80 };
   81 
   82 static struct pcmchan_caps ad1816_caps = {4000, 55200, ad1816_fmt, 0};
   83 
   84 #define AD1816_MUTE 31          /* value for mute */
   85 
   86 static void
   87 ad1816_lock(struct ad1816_info *ad1816)
   88 {
   89         snd_mtxlock(ad1816->lock);
   90 }
   91 
   92 static void
   93 ad1816_unlock(struct ad1816_info *ad1816)
   94 {
   95         snd_mtxunlock(ad1816->lock);
   96 }
   97 
   98 static int
   99 port_rd(struct resource *port, int off)
  100 {
  101         if (port)
  102                 return bus_space_read_1(rman_get_bustag(port),
  103                                         rman_get_bushandle(port),
  104                                         off);
  105         else
  106                 return -1;
  107 }
  108 
  109 static void
  110 port_wr(struct resource *port, int off, u_int8_t data)
  111 {
  112         if (port)
  113                 bus_space_write_1(rman_get_bustag(port),
  114                                   rman_get_bushandle(port),
  115                                   off, data);
  116 }
  117 
  118 static int
  119 io_rd(struct ad1816_info *ad1816, int reg)
  120 {
  121         return port_rd(ad1816->io_base, reg);
  122 }
  123 
  124 static void
  125 io_wr(struct ad1816_info *ad1816, int reg, u_int8_t data)
  126 {
  127         port_wr(ad1816->io_base, reg, data);
  128 }
  129 
  130 static void
  131 ad1816_intr(void *arg)
  132 {
  133         struct ad1816_info *ad1816 = (struct ad1816_info *)arg;
  134         unsigned char   c, served = 0;
  135 
  136         ad1816_lock(ad1816);
  137         /* get interrupt status */
  138         c = io_rd(ad1816, AD1816_INT);
  139 
  140         /* check for stray interrupts */
  141         if (c & ~(AD1816_INTRCI | AD1816_INTRPI)) {
  142                 printf("pcm: stray int (%x)\n", c);
  143                 c &= AD1816_INTRCI | AD1816_INTRPI;
  144         }
  145         /* check for capture interrupt */
  146         if (sndbuf_runsz(ad1816->rch.buffer) && (c & AD1816_INTRCI)) {
  147                 ad1816_unlock(ad1816);
  148                 chn_intr(ad1816->rch.channel);
  149                 ad1816_lock(ad1816);
  150                 served |= AD1816_INTRCI;                /* cp served */
  151         }
  152         /* check for playback interrupt */
  153         if (sndbuf_runsz(ad1816->pch.buffer) && (c & AD1816_INTRPI)) {
  154                 ad1816_unlock(ad1816);
  155                 chn_intr(ad1816->pch.channel);
  156                 ad1816_lock(ad1816);
  157                 served |= AD1816_INTRPI;                /* pb served */
  158         }
  159         if (served == 0) {
  160                 /* this probably means this is not a (working) ad1816 chip, */
  161                 /* or an error in dma handling                              */
  162                 printf("pcm: int without reason (%x)\n", c);
  163                 c = 0;
  164         } else c &= ~served;
  165         io_wr(ad1816, AD1816_INT, c);
  166         c = io_rd(ad1816, AD1816_INT);
  167         if (c != 0) printf("pcm: int clear failed (%x)\n", c);
  168         ad1816_unlock(ad1816);
  169 }
  170 
  171 static int
  172 ad1816_wait_init(struct ad1816_info *ad1816, int x)
  173 {
  174         int             n = 0;  /* to shut up the compiler... */
  175 
  176         for (; x--;)
  177                 if ((n = (io_rd(ad1816, AD1816_ALE) & AD1816_BUSY)) == 0) DELAY(10);
  178                 else return n;
  179         printf("ad1816_wait_init failed 0x%02x.\n", n);
  180         return -1;
  181 }
  182 
  183 static unsigned short
  184 ad1816_read(struct ad1816_info *ad1816, unsigned int reg)
  185 {
  186         u_short         x = 0;
  187 
  188         if (ad1816_wait_init(ad1816, 100) == -1) return 0;
  189         io_wr(ad1816, AD1816_ALE, 0);
  190         io_wr(ad1816, AD1816_ALE, (reg & AD1816_ALEMASK));
  191         if (ad1816_wait_init(ad1816, 100) == -1) return 0;
  192         x = (io_rd(ad1816, AD1816_HIGH) << 8) | io_rd(ad1816, AD1816_LOW);
  193         return x;
  194 }
  195 
  196 static void
  197 ad1816_write(struct ad1816_info *ad1816, unsigned int reg, unsigned short data)
  198 {
  199         if (ad1816_wait_init(ad1816, 100) == -1) return;
  200         io_wr(ad1816, AD1816_ALE, (reg & AD1816_ALEMASK));
  201         io_wr(ad1816, AD1816_LOW,  (data & 0x000000ff));
  202         io_wr(ad1816, AD1816_HIGH, (data & 0x0000ff00) >> 8);
  203 }
  204 
  205 /* -------------------------------------------------------------------- */
  206 
  207 static int
  208 ad1816mix_init(struct snd_mixer *m)
  209 {
  210         mix_setdevs(m, AD1816_MIXER_DEVICES);
  211         mix_setrecdevs(m, AD1816_REC_DEVICES);
  212         return 0;
  213 }
  214 
  215 static int
  216 ad1816mix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
  217 {
  218         struct ad1816_info *ad1816 = mix_getdevinfo(m);
  219         u_short reg = 0;
  220 
  221         /* Scale volumes */
  222         left = AD1816_MUTE - (AD1816_MUTE * left) / 100;
  223         right = AD1816_MUTE - (AD1816_MUTE * right) / 100;
  224 
  225         reg = (left << 8) | right;
  226 
  227         /* do channel selective muting if volume is zero */
  228         if (left == AD1816_MUTE)        reg |= 0x8000;
  229         if (right == AD1816_MUTE)       reg |= 0x0080;
  230 
  231         ad1816_lock(ad1816);
  232         switch (dev) {
  233         case SOUND_MIXER_VOLUME:        /* Register 14 master volume */
  234                 ad1816_write(ad1816, 14, reg);
  235                 break;
  236 
  237         case SOUND_MIXER_CD:    /* Register 15 cd */
  238         case SOUND_MIXER_LINE1:
  239                 ad1816_write(ad1816, 15, reg);
  240                 break;
  241 
  242         case SOUND_MIXER_SYNTH: /* Register 16 synth */
  243                 ad1816_write(ad1816, 16, reg);
  244                 break;
  245 
  246         case SOUND_MIXER_PCM:   /* Register 4 pcm */
  247                 ad1816_write(ad1816, 4, reg);
  248                 break;
  249 
  250         case SOUND_MIXER_LINE:
  251         case SOUND_MIXER_LINE3: /* Register 18 line in */
  252                 ad1816_write(ad1816, 18, reg);
  253                 break;
  254 
  255         case SOUND_MIXER_MIC:   /* Register 19 mic volume */
  256                 ad1816_write(ad1816, 19, reg & ~0xff);  /* mic is mono */
  257                 break;
  258 
  259         case SOUND_MIXER_IGAIN:
  260                 /* and now to something completely different ... */
  261                 ad1816_write(ad1816, 20, ((ad1816_read(ad1816, 20) & ~0x0f0f)
  262                 | (((AD1816_MUTE - left) / 2) << 8) /* four bits of adc gain */
  263                 | ((AD1816_MUTE - right) / 2)));
  264                 break;
  265 
  266         default:
  267                 printf("ad1816_mixer_set(): unknown device.\n");
  268                 break;
  269         }
  270         ad1816_unlock(ad1816);
  271 
  272         left = ((AD1816_MUTE - left) * 100) / AD1816_MUTE;
  273         right = ((AD1816_MUTE - right) * 100) / AD1816_MUTE;
  274 
  275         return left | (right << 8);
  276 }
  277 
  278 static u_int32_t
  279 ad1816mix_setrecsrc(struct snd_mixer *m, u_int32_t src)
  280 {
  281         struct ad1816_info *ad1816 = mix_getdevinfo(m);
  282         int dev;
  283 
  284         switch (src) {
  285         case SOUND_MASK_LINE:
  286         case SOUND_MASK_LINE3:
  287                 dev = 0x00;
  288                 break;
  289 
  290         case SOUND_MASK_CD:
  291         case SOUND_MASK_LINE1:
  292                 dev = 0x20;
  293                 break;
  294 
  295         case SOUND_MASK_MIC:
  296         default:
  297                 dev = 0x50;
  298                 src = SOUND_MASK_MIC;
  299         }
  300 
  301         dev |= dev << 8;
  302         ad1816_lock(ad1816);
  303         ad1816_write(ad1816, 20, (ad1816_read(ad1816, 20) & ~0x7070) | dev);
  304         ad1816_unlock(ad1816);
  305         return src;
  306 }
  307 
  308 static kobj_method_t ad1816mixer_methods[] = {
  309         KOBJMETHOD(mixer_init,          ad1816mix_init),
  310         KOBJMETHOD(mixer_set,           ad1816mix_set),
  311         KOBJMETHOD(mixer_setrecsrc,     ad1816mix_setrecsrc),
  312         KOBJMETHOD_END
  313 };
  314 MIXER_DECLARE(ad1816mixer);
  315 
  316 /* -------------------------------------------------------------------- */
  317 /* channel interface */
  318 static void *
  319 ad1816chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
  320 {
  321         struct ad1816_info *ad1816 = devinfo;
  322         struct ad1816_chinfo *ch = (dir == PCMDIR_PLAY)? &ad1816->pch : &ad1816->rch;
  323 
  324         ch->dir = dir;
  325         ch->parent = ad1816;
  326         ch->channel = c;
  327         ch->buffer = b;
  328         if (sndbuf_alloc(ch->buffer, ad1816->parent_dmat, 0, ad1816->bufsize) != 0)
  329                 return NULL;
  330 
  331         sndbuf_dmasetup(ch->buffer, (dir == PCMDIR_PLAY) ? ad1816->drq1 :
  332             ad1816->drq2);
  333         if (SND_DMA(ch->buffer))
  334                 sndbuf_dmasetdir(ch->buffer, dir);
  335 
  336         return ch;
  337 }
  338 
  339 static int
  340 ad1816chan_setformat(kobj_t obj, void *data, u_int32_t format)
  341 {
  342         struct ad1816_chinfo *ch = data;
  343         struct ad1816_info *ad1816 = ch->parent;
  344         int fmt = AD1816_U8, reg;
  345 
  346         ad1816_lock(ad1816);
  347         if (ch->dir == PCMDIR_PLAY) {
  348                 reg = AD1816_PLAY;
  349                 ad1816_write(ad1816, 8, 0x0000);        /* reset base and current counter */
  350                 ad1816_write(ad1816, 9, 0x0000);        /* for playback and capture */
  351         } else {
  352                 reg = AD1816_CAPT;
  353                 ad1816_write(ad1816, 10, 0x0000);
  354                 ad1816_write(ad1816, 11, 0x0000);
  355         }
  356         switch (AFMT_ENCODING(format)) {
  357         case AFMT_A_LAW:
  358                 fmt = AD1816_ALAW;
  359                 break;
  360 
  361         case AFMT_MU_LAW:
  362                 fmt = AD1816_MULAW;
  363                 break;
  364 
  365         case AFMT_S16_LE:
  366                 fmt = AD1816_S16LE;
  367                 break;
  368 
  369         case AFMT_S16_BE:
  370                 fmt = AD1816_S16BE;
  371                 break;
  372 
  373         case AFMT_U8:
  374                 fmt = AD1816_U8;
  375                 break;
  376         }
  377         if (AFMT_CHANNEL(format) > 1) fmt |= AD1816_STEREO;
  378         io_wr(ad1816, reg, fmt);
  379         ad1816_unlock(ad1816);
  380 #if 0
  381         return format;
  382 #else
  383         return 0;
  384 #endif
  385 }
  386 
  387 static u_int32_t
  388 ad1816chan_setspeed(kobj_t obj, void *data, u_int32_t speed)
  389 {
  390         struct ad1816_chinfo *ch = data;
  391         struct ad1816_info *ad1816 = ch->parent;
  392 
  393         RANGE(speed, 4000, 55200);
  394         ad1816_lock(ad1816);
  395         ad1816_write(ad1816, (ch->dir == PCMDIR_PLAY)? 2 : 3, speed);
  396         ad1816_unlock(ad1816);
  397         return speed;
  398 }
  399 
  400 static u_int32_t
  401 ad1816chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
  402 {
  403         struct ad1816_chinfo *ch = data;
  404 
  405         ch->blksz = blocksize;
  406         return ch->blksz;
  407 }
  408 
  409 static int
  410 ad1816chan_trigger(kobj_t obj, void *data, int go)
  411 {
  412         struct ad1816_chinfo *ch = data;
  413         struct ad1816_info *ad1816 = ch->parent;
  414         int wr, reg;
  415 
  416         if (!PCMTRIG_COMMON(go))
  417                 return 0;
  418 
  419         sndbuf_dma(ch->buffer, go);
  420         wr = (ch->dir == PCMDIR_PLAY);
  421         reg = wr? AD1816_PLAY : AD1816_CAPT;
  422         ad1816_lock(ad1816);
  423         switch (go) {
  424         case PCMTRIG_START:
  425                 /* start only if not already running */
  426                 if (!(io_rd(ad1816, reg) & AD1816_ENABLE)) {
  427                         int cnt = ((ch->blksz) >> 2) - 1;
  428                         ad1816_write(ad1816, wr? 8 : 10, cnt); /* count */
  429                         ad1816_write(ad1816, wr? 9 : 11, 0); /* reset cur cnt */
  430                         ad1816_write(ad1816, 1, ad1816_read(ad1816, 1) |
  431                                      (wr? 0x8000 : 0x4000)); /* enable int */
  432                         /* enable playback */
  433                         io_wr(ad1816, reg, io_rd(ad1816, reg) | AD1816_ENABLE);
  434                         if (!(io_rd(ad1816, reg) & AD1816_ENABLE))
  435                                 printf("ad1816: failed to start %s DMA!\n",
  436                                        wr? "play" : "rec");
  437                 }
  438                 break;
  439 
  440         case PCMTRIG_STOP:
  441         case PCMTRIG_ABORT:             /* XXX check this... */
  442                 /* we don't test here if it is running... */
  443                 if (wr) {
  444                         ad1816_write(ad1816, 1, ad1816_read(ad1816, 1) &
  445                                      ~(wr? 0x8000 : 0x4000));
  446                         /* disable int */
  447                         io_wr(ad1816, reg, io_rd(ad1816, reg) & ~AD1816_ENABLE);
  448                         /* disable playback */
  449                         if (io_rd(ad1816, reg) & AD1816_ENABLE)
  450                                 printf("ad1816: failed to stop %s DMA!\n",
  451                                        wr? "play" : "rec");
  452                         ad1816_write(ad1816, wr? 8 : 10, 0); /* reset base cnt */
  453                         ad1816_write(ad1816, wr? 9 : 11, 0); /* reset cur cnt */
  454                 }
  455                 break;
  456         }
  457         ad1816_unlock(ad1816);
  458         return 0;
  459 }
  460 
  461 static u_int32_t
  462 ad1816chan_getptr(kobj_t obj, void *data)
  463 {
  464         struct ad1816_chinfo *ch = data;
  465         return sndbuf_dmaptr(ch->buffer);
  466 }
  467 
  468 static struct pcmchan_caps *
  469 ad1816chan_getcaps(kobj_t obj, void *data)
  470 {
  471         return &ad1816_caps;
  472 }
  473 
  474 static kobj_method_t ad1816chan_methods[] = {
  475         KOBJMETHOD(channel_init,                ad1816chan_init),
  476         KOBJMETHOD(channel_setformat,           ad1816chan_setformat),
  477         KOBJMETHOD(channel_setspeed,            ad1816chan_setspeed),
  478         KOBJMETHOD(channel_setblocksize,        ad1816chan_setblocksize),
  479         KOBJMETHOD(channel_trigger,             ad1816chan_trigger),
  480         KOBJMETHOD(channel_getptr,              ad1816chan_getptr),
  481         KOBJMETHOD(channel_getcaps,             ad1816chan_getcaps),
  482         KOBJMETHOD_END
  483 };
  484 CHANNEL_DECLARE(ad1816chan);
  485 
  486 /* -------------------------------------------------------------------- */
  487 
  488 static void
  489 ad1816_release_resources(struct ad1816_info *ad1816, device_t dev)
  490 {
  491         if (ad1816->irq) {
  492                 if (ad1816->ih)
  493                         bus_teardown_intr(dev, ad1816->irq, ad1816->ih);
  494                 bus_release_resource(dev, SYS_RES_IRQ, ad1816->irq_rid, ad1816->irq);
  495                 ad1816->irq = NULL;
  496         }
  497         if (ad1816->drq1) {
  498                 isa_dma_release(rman_get_start(ad1816->drq1));
  499                 bus_release_resource(dev, SYS_RES_DRQ, ad1816->drq1_rid, ad1816->drq1);
  500                 ad1816->drq1 = NULL;
  501         }
  502         if (ad1816->drq2) {
  503                 isa_dma_release(rman_get_start(ad1816->drq2));
  504                 bus_release_resource(dev, SYS_RES_DRQ, ad1816->drq2_rid, ad1816->drq2);
  505                 ad1816->drq2 = NULL;
  506         }
  507         if (ad1816->io_base) {
  508                 bus_release_resource(dev, SYS_RES_IOPORT, ad1816->io_rid, ad1816->io_base);
  509                 ad1816->io_base = NULL;
  510         }
  511         if (ad1816->parent_dmat) {
  512                 bus_dma_tag_destroy(ad1816->parent_dmat);
  513                 ad1816->parent_dmat = 0;
  514         }
  515         if (ad1816->lock)
  516                 snd_mtxfree(ad1816->lock);
  517 
  518         free(ad1816, M_DEVBUF);
  519 }
  520 
  521 static int
  522 ad1816_alloc_resources(struct ad1816_info *ad1816, device_t dev)
  523 {
  524         int ok = 1, pdma, rdma;
  525 
  526         if (!ad1816->io_base)
  527                 ad1816->io_base = bus_alloc_resource_any(dev, 
  528                         SYS_RES_IOPORT, &ad1816->io_rid, RF_ACTIVE);
  529         if (!ad1816->irq)
  530                 ad1816->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  531                         &ad1816->irq_rid, RF_ACTIVE);
  532         if (!ad1816->drq1)
  533                 ad1816->drq1 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
  534                         &ad1816->drq1_rid, RF_ACTIVE);
  535         if (!ad1816->drq2)
  536                 ad1816->drq2 = bus_alloc_resource_any(dev, SYS_RES_DRQ, 
  537                         &ad1816->drq2_rid, RF_ACTIVE);
  538 
  539         if (!ad1816->io_base || !ad1816->drq1 || !ad1816->irq) ok = 0;
  540 
  541         if (ok) {
  542                 pdma = rman_get_start(ad1816->drq1);
  543                 isa_dma_acquire(pdma);
  544                 isa_dmainit(pdma, ad1816->bufsize);
  545                 if (ad1816->drq2) {
  546                         rdma = rman_get_start(ad1816->drq2);
  547                         isa_dma_acquire(rdma);
  548                         isa_dmainit(rdma, ad1816->bufsize);
  549                 } else
  550                         rdma = pdma;
  551                 if (pdma == rdma)
  552                         pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
  553         }
  554 
  555         return ok;
  556 }
  557 
  558 static int
  559 ad1816_init(struct ad1816_info *ad1816, device_t dev)
  560 {
  561         ad1816_write(ad1816, 1, 0x2);   /* disable interrupts */
  562         ad1816_write(ad1816, 32, 0x90F0);       /* SoundSys Mode, split fmt */
  563 
  564         ad1816_write(ad1816, 5, 0x8080);        /* FM volume mute */
  565         ad1816_write(ad1816, 6, 0x8080);        /* I2S1 volume mute */
  566         ad1816_write(ad1816, 7, 0x8080);        /* I2S0 volume mute */
  567         ad1816_write(ad1816, 17, 0x8888);       /* VID Volume mute */
  568         ad1816_write(ad1816, 20, 0x5050);       /* recsrc mic, agc off */
  569         /* adc gain is set to 0 */
  570 
  571         return 0;
  572 }
  573 
  574 static int
  575 ad1816_probe(device_t dev)
  576 {
  577         char *s = NULL;
  578         u_int32_t logical_id = isa_get_logicalid(dev);
  579 
  580         switch (logical_id) {
  581         case 0x80719304: /* ADS7180 */
  582                 s = "AD1816";
  583                 break;
  584         case 0x50719304: /* ADS7150 */
  585                 s = "AD1815";
  586                 break;
  587         }
  588 
  589         if (s) {
  590                 device_set_desc(dev, s);
  591                 return BUS_PROBE_DEFAULT;
  592         }
  593         return ENXIO;
  594 }
  595 
  596 static int
  597 ad1816_attach(device_t dev)
  598 {
  599         struct ad1816_info *ad1816;
  600         char status[SND_STATUSLEN], status2[SND_STATUSLEN];
  601 
  602         ad1816 = malloc(sizeof(*ad1816), M_DEVBUF, M_WAITOK | M_ZERO);
  603         ad1816->lock = snd_mtxcreate(device_get_nameunit(dev),
  604             "snd_ad1816 softc");
  605         ad1816->io_rid = 2;
  606         ad1816->irq_rid = 0;
  607         ad1816->drq1_rid = 0;
  608         ad1816->drq2_rid = 1;
  609         ad1816->bufsize = pcm_getbuffersize(dev, 4096, DSP_BUFFSIZE, 65536);
  610 
  611         if (!ad1816_alloc_resources(ad1816, dev)) goto no;
  612         ad1816_init(ad1816, dev);
  613         if (mixer_init(dev, &ad1816mixer_class, ad1816)) goto no;
  614 
  615         snd_setup_intr(dev, ad1816->irq, 0, ad1816_intr, ad1816, &ad1816->ih);
  616         if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
  617                         /*boundary*/0,
  618                         /*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
  619                         /*highaddr*/BUS_SPACE_MAXADDR,
  620                         /*filter*/NULL, /*filterarg*/NULL,
  621                         /*maxsize*/ad1816->bufsize, /*nsegments*/1,
  622                         /*maxsegz*/0x3ffff,
  623                         /*flags*/0, /*lockfunc*/busdma_lock_mutex,
  624                         /*lockarg*/ &Giant, &ad1816->parent_dmat) != 0) {
  625                 device_printf(dev, "unable to create dma tag\n");
  626                 goto no;
  627         }
  628         if (ad1816->drq2)
  629                 snprintf(status2, SND_STATUSLEN, ":%jd", rman_get_start(ad1816->drq2));
  630         else
  631                 status2[0] = '\0';
  632 
  633         snprintf(status, SND_STATUSLEN, "at io 0x%jx irq %jd drq %jd%s bufsz %u %s",
  634                 rman_get_start(ad1816->io_base),
  635                 rman_get_start(ad1816->irq),
  636                 rman_get_start(ad1816->drq1),
  637                 status2,
  638                 ad1816->bufsize,
  639                 PCM_KLDSTRING(snd_ad1816));
  640 
  641         if (pcm_register(dev, ad1816, 1, 1)) goto no;
  642         pcm_addchan(dev, PCMDIR_REC, &ad1816chan_class, ad1816);
  643         pcm_addchan(dev, PCMDIR_PLAY, &ad1816chan_class, ad1816);
  644         pcm_setstatus(dev, status);
  645 
  646         return 0;
  647 no:
  648         ad1816_release_resources(ad1816, dev);
  649 
  650         return ENXIO;
  651 
  652 }
  653 
  654 static int
  655 ad1816_detach(device_t dev)
  656 {
  657         int r;
  658         struct ad1816_info *ad1816;
  659 
  660         r = pcm_unregister(dev);
  661         if (r)
  662                 return r;
  663 
  664         ad1816 = pcm_getdevinfo(dev);
  665         ad1816_release_resources(ad1816, dev);
  666         return 0;
  667 }
  668 
  669 static device_method_t ad1816_methods[] = {
  670         /* Device interface */
  671         DEVMETHOD(device_probe,         ad1816_probe),
  672         DEVMETHOD(device_attach,        ad1816_attach),
  673         DEVMETHOD(device_detach,        ad1816_detach),
  674 
  675         { 0, 0 }
  676 };
  677 
  678 static driver_t ad1816_driver = {
  679         "pcm",
  680         ad1816_methods,
  681         PCM_SOFTC_SIZE,
  682 };
  683 
  684 DRIVER_MODULE(snd_ad1816, isa, ad1816_driver, pcm_devclass, 0, 0);
  685 DRIVER_MODULE(snd_ad1816, acpi, ad1816_driver, pcm_devclass, 0, 0);
  686 MODULE_DEPEND(snd_ad1816, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
  687 MODULE_VERSION(snd_ad1816, 1);
  688 
  689 

Cache object: c8f32788a68454f5317c28f1737e6864


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