2 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
3 * Copyright 1997,1998 Luigi Rizzo.
5 * Derived from files in the Voxware 3.5 distribution,
6 * Copyright by Hannu Savolainen 1994, under the same copyright
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * $FreeBSD: src/sys/dev/sound/isa/ess.c,v 1.3.2.8 2002/12/24 21:17:41 semenu Exp $
32 * $DragonFly: src/sys/dev/sound/isa/ess.c,v 1.2 2003/06/17 04:28:30 dillon Exp $
35 #include <dev/sound/pcm/sound.h>
37 #include <dev/sound/isa/sb.h>
38 #include <dev/sound/chip.h>
42 SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/isa/ess.c,v 1.2 2003/06/17 04:28:30 dillon Exp $");
44 #define ESS_BUFFSIZE (4096)
45 #define ABS(x) (((x) < 0)? -(x) : (x))
47 /* audio2 never generates irqs and sounds very noisy */
50 /* more accurate clocks and split audio1/audio2 rates */
51 #define ESS18XX_NEWSPEED
53 static u_int32_t ess_pfmt[] = {
55 AFMT_STEREO | AFMT_U8,
57 AFMT_STEREO | AFMT_S8,
59 AFMT_STEREO | AFMT_S16_LE,
61 AFMT_STEREO | AFMT_U16_LE,
65 static struct pcmchan_caps ess_playcaps = {5000, 49000, ess_pfmt, 0};
67 static u_int32_t ess_rfmt[] = {
69 AFMT_STEREO | AFMT_U8,
71 AFMT_STEREO | AFMT_S8,
73 AFMT_STEREO | AFMT_S16_LE,
75 AFMT_STEREO | AFMT_U16_LE,
79 static struct pcmchan_caps ess_reccaps = {5000, 49000, ess_rfmt, 0};
84 struct ess_info *parent;
85 struct pcm_channel *channel;
86 struct snd_dbuf *buffer;
87 int dir, hwch, stopping, run;
88 u_int32_t fmt, spd, blksz;
93 struct resource *io_base; /* I/O address for the board */
95 struct resource *drq1;
96 struct resource *drq2;
98 bus_dma_tag_t parent_dmat;
100 unsigned int bufsize;
101 int type, duplex:1, newspeed:1;
102 u_long bd_flags; /* board-specific flags */
103 struct ess_chinfo pch, rch;
107 static int ess_rd(struct ess_info *sc, int reg);
108 static void ess_wr(struct ess_info *sc, int reg, u_int8_t val);
109 static int ess_dspready(struct ess_info *sc);
110 static int ess_cmd(struct ess_info *sc, u_char val);
111 static int ess_cmd1(struct ess_info *sc, u_char cmd, int val);
112 static int ess_get_byte(struct ess_info *sc);
113 static void ess_setmixer(struct ess_info *sc, u_int port, u_int value);
114 static int ess_getmixer(struct ess_info *sc, u_int port);
115 static int ess_reset_dsp(struct ess_info *sc);
117 static int ess_write(struct ess_info *sc, u_char reg, int val);
118 static int ess_read(struct ess_info *sc, u_char reg);
120 static void ess_intr(void *arg);
121 static int ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len);
122 static int ess_start(struct ess_chinfo *ch);
123 static int ess_stop(struct ess_chinfo *ch);
127 * Common code for the midi and pcm functions
129 * ess_cmd write a single byte to the CMD port.
130 * ess_cmd1 write a CMD + 1 byte arg
131 * ess_cmd2 write a CMD + 2 byte arg
132 * ess_get_byte returns a single byte from the DSP data port
134 * ess_write is actually ess_cmd1
135 * ess_read access ext. regs via ess_cmd(0xc0, reg) followed by ess_get_byte
139 ess_lock(struct ess_info *sc) {
141 sbc_lock(device_get_softc(sc->parent_dev));
145 ess_unlock(struct ess_info *sc) {
147 sbc_unlock(device_get_softc(sc->parent_dev));
151 port_rd(struct resource *port, int off)
153 return bus_space_read_1(rman_get_bustag(port),
154 rman_get_bushandle(port),
159 port_wr(struct resource *port, int off, u_int8_t data)
161 bus_space_write_1(rman_get_bustag(port),
162 rman_get_bushandle(port),
167 ess_rd(struct ess_info *sc, int reg)
169 return port_rd(sc->io_base, reg);
173 ess_wr(struct ess_info *sc, int reg, u_int8_t val)
175 port_wr(sc->io_base, reg, val);
179 ess_dspready(struct ess_info *sc)
181 return ((ess_rd(sc, SBDSP_STATUS) & 0x80) == 0);
185 ess_dspwr(struct ess_info *sc, u_char val)
189 for (i = 0; i < 1000; i++) {
190 if (ess_dspready(sc)) {
191 ess_wr(sc, SBDSP_CMD, val);
194 if (i > 10) DELAY((i > 100)? 1000 : 10);
196 printf("ess_dspwr(0x%02x) timed out.\n", val);
201 ess_cmd(struct ess_info *sc, u_char val)
204 printf("ess_cmd: %x\n", val);
206 return ess_dspwr(sc, val);
210 ess_cmd1(struct ess_info *sc, u_char cmd, int val)
213 printf("ess_cmd1: %x, %x\n", cmd, val);
215 if (ess_dspwr(sc, cmd)) {
216 return ess_dspwr(sc, val & 0xff);
221 ess_setmixer(struct ess_info *sc, u_int port, u_int value)
223 DEB(printf("ess_setmixer: reg=%x, val=%x\n", port, value);)
224 ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
226 ess_wr(sc, SB_MIX_DATA, (u_char) (value & 0xff));
231 ess_getmixer(struct ess_info *sc, u_int port)
234 ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
236 val = ess_rd(sc, SB_MIX_DATA);
243 ess_get_byte(struct ess_info *sc)
247 for (i = 1000; i > 0; i--) {
248 if (ess_rd(sc, DSP_DATA_AVAIL) & 0x80)
249 return ess_rd(sc, DSP_READ);
257 ess_write(struct ess_info *sc, u_char reg, int val)
259 return ess_cmd1(sc, reg, val);
263 ess_read(struct ess_info *sc, u_char reg)
265 return (ess_cmd(sc, 0xc0) && ess_cmd(sc, reg))? ess_get_byte(sc) : -1;
269 ess_reset_dsp(struct ess_info *sc)
271 ess_wr(sc, SBDSP_RST, 3);
273 ess_wr(sc, SBDSP_RST, 0);
274 if (ess_get_byte(sc) != 0xAA) {
275 DEB(printf("ess_reset_dsp 0x%lx failed\n",
276 rman_get_start(sc->io_base)));
277 return ENXIO; /* Sorry */
284 ess_release_resources(struct ess_info *sc, device_t dev)
288 bus_teardown_intr(dev, sc->irq, sc->ih);
289 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
293 isa_dma_release(rman_get_start(sc->drq1));
294 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->drq1);
298 isa_dma_release(rman_get_start(sc->drq2));
299 bus_release_resource(dev, SYS_RES_DRQ, 1, sc->drq2);
303 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->io_base);
306 if (sc->parent_dmat) {
307 bus_dma_tag_destroy(sc->parent_dmat);
314 ess_alloc_resources(struct ess_info *sc, device_t dev)
320 sc->io_base = bus_alloc_resource(dev, SYS_RES_IOPORT,
325 sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ,
330 sc->drq1 = bus_alloc_resource(dev, SYS_RES_DRQ,
335 sc->drq2 = bus_alloc_resource(dev, SYS_RES_DRQ,
339 if (sc->io_base && sc->drq1 && sc->irq) {
340 isa_dma_acquire(rman_get_start(sc->drq1));
341 isa_dmainit(rman_get_start(sc->drq1), sc->bufsize);
344 isa_dma_acquire(rman_get_start(sc->drq2));
345 isa_dmainit(rman_get_start(sc->drq2), sc->bufsize);
355 struct ess_info *sc = (struct ess_info *)arg;
360 if (ess_getmixer(sc, 0x7a) & 0x80)
362 if (ess_rd(sc, 0x0c) & 0x01)
365 pirq = (src & sc->pch.hwch)? 1 : 0;
366 rirq = (src & sc->rch.hwch)? 1 : 0;
370 chn_intr(sc->pch.channel);
371 if (sc->pch.stopping) {
373 sndbuf_isadma(sc->pch.buffer, PCMTRIG_STOP);
374 sc->pch.stopping = 0;
375 if (sc->pch.hwch == 1)
376 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
378 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x03);
384 chn_intr(sc->rch.channel);
385 if (sc->rch.stopping) {
387 sndbuf_isadma(sc->rch.buffer, PCMTRIG_STOP);
388 sc->rch.stopping = 0;
389 /* XXX: will this stop audio2? */
390 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
395 ess_setmixer(sc, 0x7a, ess_getmixer(sc, 0x7a) & ~0x80);
397 ess_rd(sc, DSP_DATA_AVAIL);
401 /* utility functions for ESS */
403 ess_calcspeed8(int *spd)
409 t = (795500 + speed / 2) / speed;
410 speed = (795500 + t / 2) / t;
411 t = (256 - t) | 0x80;
413 t = (397700 + speed / 2) / speed;
414 speed = (397700 + t / 2) / t;
418 return t & 0x000000ff;
422 ess_calcspeed9(int *spd)
424 int speed, s0, s1, use0;
427 /* rate = source / (256 - divisor) */
428 /* divisor = 256 - (source / rate) */
430 t0 = 128 - (793800 / speed);
431 s0 = 793800 / (128 - t0);
433 t1 = 128 - (768000 / speed);
434 s1 = 768000 / (128 - t1);
437 use0 = (ABS(speed - s0) < ABS(speed - s1))? 1 : 0;
439 *spd = use0? s0 : s1;
440 return use0? t0 : t1;
444 ess_calcfilter(int spd)
448 /* cutoff = 7160000 / (256 - divisor) */
449 /* divisor = 256 - (7160000 / cutoff) */
450 cutoff = (spd * 9 * 82) / 20;
451 return (256 - (7160000 / cutoff));
455 ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len)
457 int play = (dir == PCMDIR_PLAY)? 1 : 0;
458 int b16 = (fmt & AFMT_16BIT)? 1 : 0;
459 int stereo = (fmt & AFMT_STEREO)? 1 : 0;
460 int unsign = (fmt == AFMT_U8 || fmt == AFMT_U16_LE)? 1 : 0;
461 u_int8_t spdval, fmtval;
464 spdval = (sc->newspeed)? ess_calcspeed9(&spd) : ess_calcspeed8(&spd);
468 KASSERT((dir == PCMDIR_PLAY) || (dir == PCMDIR_REC), ("ess_setupch: dir1 bad"));
469 /* transfer length low */
470 ess_write(sc, 0xa4, len & 0x00ff);
471 /* transfer length high */
472 ess_write(sc, 0xa5, (len & 0xff00) >> 8);
473 /* autoinit, dma dir */
474 ess_write(sc, 0xb8, 0x04 | (play? 0x00 : 0x0a));
476 ess_write(sc, 0xa8, (ess_read(sc, 0xa8) & ~0x03) | (stereo? 0x01 : 0x02));
477 /* demand mode, 4 bytes/xfer */
478 ess_write(sc, 0xb9, 0x02);
480 ess_write(sc, 0xa1, spdval);
482 ess_write(sc, 0xa2, ess_calcfilter(spd));
485 ess_write(sc, 0xb6, unsign? 0x80 : 0x00);
486 /* mono, b16: signed, load signal */
487 ess_write(sc, 0xb7, 0x51 | (unsign? 0x00 : 0x20));
489 ess_write(sc, 0xb7, 0x90 | (unsign? 0x00 : 0x20) |
491 (stereo? 0x08 : 0x40));
493 ess_write(sc, 0xb1, (ess_read(sc, 0xb1) & 0x0f) | 0x50);
495 ess_write(sc, 0xb2, (ess_read(sc, 0xb2) & 0x0f) | 0x50);
496 } else if (ch == 2) {
497 KASSERT(dir == PCMDIR_PLAY, ("ess_setupch: dir2 bad"));
498 /* transfer length low */
499 ess_setmixer(sc, 0x74, len & 0x00ff);
500 /* transfer length high */
501 ess_setmixer(sc, 0x76, (len & 0xff00) >> 8);
502 /* autoinit, 4 bytes/req */
503 ess_setmixer(sc, 0x78, 0x90);
504 fmtval = b16 | (stereo << 1) | (unsign << 2);
505 /* enable irq, set format */
506 ess_setmixer(sc, 0x7a, 0x40 | fmtval);
509 ess_setmixer(sc, 0x70, spdval);
511 ess_setmixer(sc, 0x72, ess_calcfilter(spd));
518 ess_start(struct ess_chinfo *ch)
520 struct ess_info *sc = ch->parent;
521 int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
524 ess_setupch(sc, ch->hwch, ch->dir, ch->spd, ch->fmt, ch->blksz);
527 ess_write(sc, 0xb8, ess_read(sc, 0xb8) | 0x01);
529 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) | 0x03);
531 ess_cmd(sc, DSP_CMD_SPKON);
537 ess_stop(struct ess_chinfo *ch)
539 struct ess_info *sc = ch->parent;
540 int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
545 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x04);
547 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x10);
549 ess_cmd(sc, DSP_CMD_SPKOFF);
554 /* -------------------------------------------------------------------- */
555 /* channel interface for ESS18xx */
557 esschan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
559 struct ess_info *sc = devinfo;
560 struct ess_chinfo *ch = (dir == PCMDIR_PLAY)? &sc->pch : &sc->rch;
565 if (sndbuf_alloc(ch->buffer, sc->parent_dmat, sc->bufsize) == -1)
569 if ((dir == PCMDIR_PLAY) && (sc->duplex))
571 sndbuf_isadmasetup(ch->buffer, (ch->hwch == 1)? sc->drq1 : sc->drq2);
576 esschan_setformat(kobj_t obj, void *data, u_int32_t format)
578 struct ess_chinfo *ch = data;
585 esschan_setspeed(kobj_t obj, void *data, u_int32_t speed)
587 struct ess_chinfo *ch = data;
588 struct ess_info *sc = ch->parent;
592 ess_calcspeed9(&ch->spd);
594 ess_calcspeed8(&ch->spd);
599 esschan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
601 struct ess_chinfo *ch = data;
603 ch->blksz = blocksize;
608 esschan_trigger(kobj_t obj, void *data, int go)
610 struct ess_chinfo *ch = data;
612 if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD)
618 sndbuf_isadma(ch->buffer, go);
632 esschan_getptr(kobj_t obj, void *data)
634 struct ess_chinfo *ch = data;
636 return sndbuf_isadmaptr(ch->buffer);
639 static struct pcmchan_caps *
640 esschan_getcaps(kobj_t obj, void *data)
642 struct ess_chinfo *ch = data;
644 return (ch->dir == PCMDIR_PLAY)? &ess_playcaps : &ess_reccaps;
647 static kobj_method_t esschan_methods[] = {
648 KOBJMETHOD(channel_init, esschan_init),
649 KOBJMETHOD(channel_setformat, esschan_setformat),
650 KOBJMETHOD(channel_setspeed, esschan_setspeed),
651 KOBJMETHOD(channel_setblocksize, esschan_setblocksize),
652 KOBJMETHOD(channel_trigger, esschan_trigger),
653 KOBJMETHOD(channel_getptr, esschan_getptr),
654 KOBJMETHOD(channel_getcaps, esschan_getcaps),
657 CHANNEL_DECLARE(esschan);
659 /************************************************************/
662 essmix_init(struct snd_mixer *m)
664 struct ess_info *sc = mix_getdevinfo(m);
666 mix_setrecdevs(m, SOUND_MASK_CD | SOUND_MASK_MIC | SOUND_MASK_LINE |
669 mix_setdevs(m, SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE |
670 SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_VOLUME |
671 SOUND_MASK_LINE1 | SOUND_MASK_SPEAKER);
673 ess_setmixer(sc, 0, 0); /* reset */
679 essmix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
681 struct ess_info *sc = mix_getdevinfo(m);
682 int preg = 0, rreg = 0, l, r;
684 l = (left * 15) / 100;
685 r = (right * 15) / 100;
687 case SOUND_MIXER_SYNTH:
692 case SOUND_MIXER_PCM:
697 case SOUND_MIXER_LINE:
702 case SOUND_MIXER_MIC:
707 case SOUND_MIXER_LINE1:
717 case SOUND_MIXER_SPEAKER:
721 case SOUND_MIXER_VOLUME:
722 l = left? (left * 63) / 100 : 64;
723 r = right? (right * 63) / 100 : 64;
724 ess_setmixer(sc, 0x60, l);
725 ess_setmixer(sc, 0x62, r);
726 left = (l == 64)? 0 : (l * 100) / 63;
727 right = (r == 64)? 0 : (r * 100) / 63;
728 return left | (right << 8);
732 ess_setmixer(sc, preg, (l << 4) | r);
734 ess_setmixer(sc, rreg, (l << 4) | r);
736 left = (l * 100) / 15;
737 right = (r * 100) / 15;
739 return left | (right << 8);
743 essmix_setrecsrc(struct snd_mixer *m, u_int32_t src)
745 struct ess_info *sc = mix_getdevinfo(m);
753 case SOUND_MASK_LINE:
757 case SOUND_MASK_IMIX:
764 src = SOUND_MASK_MIC;
768 ess_setmixer(sc, 0x1c, recdev);
773 static kobj_method_t essmixer_methods[] = {
774 KOBJMETHOD(mixer_init, essmix_init),
775 KOBJMETHOD(mixer_set, essmix_set),
776 KOBJMETHOD(mixer_setrecsrc, essmix_setrecsrc),
779 MIXER_DECLARE(essmixer);
781 /************************************************************/
784 ess_probe(device_t dev)
786 uintptr_t func, ver, r, f;
788 /* The parent device has already been probed. */
789 r = BUS_READ_IVAR(device_get_parent(dev), dev, 0, &func);
793 r = BUS_READ_IVAR(device_get_parent(dev), dev, 1, &ver);
794 f = (ver & 0xffff0000) >> 16;
798 device_set_desc(dev, "ESS 18xx DSP");
804 ess_attach(device_t dev)
807 char status[SND_STATUSLEN], buf[64];
810 sc = (struct ess_info *)malloc(sizeof *sc, M_DEVBUF, M_NOWAIT | M_ZERO);
814 sc->parent_dev = device_get_parent(dev);
815 sc->bufsize = pcm_getbuffersize(dev, 4096, ESS_BUFFSIZE, 65536);
816 if (ess_alloc_resources(sc, dev))
818 if (ess_reset_dsp(sc))
820 if (mixer_init(dev, &essmixer_class, sc))
825 ver = (ess_getmixer(sc, 0x40) << 8) | ess_rd(sc, SB_MIX_DATA);
826 snprintf(buf, sizeof buf, "ESS %x DSP", ver);
827 device_set_desc_copy(dev, buf);
829 device_printf(dev, "ESS%x detected", ver);
834 #ifdef ESS18XX_DUPLEX
835 sc->duplex = sc->drq2? 1 : 0;
837 #ifdef ESS18XX_NEWSPEED
843 printf("%s%s\n", sc->duplex? ", duplex" : "",
844 sc->newspeed? ", newspeed" : "");
847 ess_setmixer(sc, 0x71, 0x22);
849 snd_setup_intr(dev, sc->irq, INTR_MPSAFE, ess_intr, sc, &sc->ih);
851 pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
853 if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0,
854 /*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
855 /*highaddr*/BUS_SPACE_MAXADDR,
856 /*filter*/NULL, /*filterarg*/NULL,
857 /*maxsize*/sc->bufsize, /*nsegments*/1,
859 /*flags*/0, &sc->parent_dmat) != 0) {
860 device_printf(dev, "unable to create dma tag\n");
865 snprintf(buf, SND_STATUSLEN, ":%ld", rman_get_start(sc->drq2));
869 snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld drq %ld%s bufsz %u",
870 rman_get_start(sc->io_base), rman_get_start(sc->irq),
871 rman_get_start(sc->drq1), buf, sc->bufsize);
873 if (pcm_register(dev, sc, 1, 1))
875 pcm_addchan(dev, PCMDIR_REC, &esschan_class, sc);
876 pcm_addchan(dev, PCMDIR_PLAY, &esschan_class, sc);
877 pcm_setstatus(dev, status);
882 ess_release_resources(sc, dev);
887 ess_detach(device_t dev)
892 r = pcm_unregister(dev);
896 sc = pcm_getdevinfo(dev);
897 ess_release_resources(sc, dev);
902 ess_resume(device_t dev)
906 sc = pcm_getdevinfo(dev);
908 if (ess_reset_dsp(sc)) {
909 device_printf(dev, "unable to reset DSP at resume\n");
913 if (mixer_reinit(dev)) {
914 device_printf(dev, "unable to reinitialize mixer at resume\n");
921 static device_method_t ess_methods[] = {
922 /* Device interface */
923 DEVMETHOD(device_probe, ess_probe),
924 DEVMETHOD(device_attach, ess_attach),
925 DEVMETHOD(device_detach, ess_detach),
926 DEVMETHOD(device_resume, ess_resume),
931 static driver_t ess_driver = {
937 DRIVER_MODULE(snd_ess, sbc, ess_driver, pcm_devclass, 0, 0);
938 MODULE_DEPEND(snd_ess, snd_pcm, PCM_MINVER, PCM_PREFVER, PCM_MAXVER);
939 MODULE_DEPEND(snd_ess, snd_sbc, 1, 1, 1);
940 MODULE_VERSION(snd_ess, 1);
942 /************************************************************/
944 static devclass_t esscontrol_devclass;
946 static struct isa_pnp_id essc_ids[] = {
947 {0x06007316, "ESS Control"},
952 esscontrol_probe(device_t dev)
956 i = ISA_PNP_PROBE(device_get_parent(dev), dev, essc_ids);
963 esscontrol_attach(device_t dev)
970 io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE);
972 for (i = 0; i < 0x100; i++) {
976 printf("%3.3x: ", i);
978 if ((i & 0x0f) == 0x0f)
981 bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
989 esscontrol_detach(device_t dev)
994 static device_method_t esscontrol_methods[] = {
995 /* Device interface */
996 DEVMETHOD(device_probe, esscontrol_probe),
997 DEVMETHOD(device_attach, esscontrol_attach),
998 DEVMETHOD(device_detach, esscontrol_detach),
1003 static driver_t esscontrol_driver = {
1009 DRIVER_MODULE(esscontrol, isa, esscontrol_driver, esscontrol_devclass, 0, 0);