2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * Copyright (c) 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
32 #include <dev/sound/pcm/sound.h>
34 #include <dev/sound/isa/sb.h>
35 #include <dev/sound/chip.h>
37 #include <isa/isavar.h>
41 SND_DECLARE_FILE("$FreeBSD$");
43 #define ESS_BUFFSIZE (4096)
44 #define ABS(x) (((x) < 0)? -(x) : (x))
46 /* audio2 never generates irqs and sounds very noisy */
49 /* more accurate clocks and split audio1/audio2 rates */
50 #define ESS18XX_NEWSPEED
52 static u_int32_t ess_pfmt[] = {
54 AFMT_STEREO | AFMT_U8,
56 AFMT_STEREO | AFMT_S8,
58 AFMT_STEREO | AFMT_S16_LE,
60 AFMT_STEREO | AFMT_U16_LE,
64 static struct pcmchan_caps ess_playcaps = {6000, 48000, ess_pfmt, 0};
66 static u_int32_t ess_rfmt[] = {
68 AFMT_STEREO | AFMT_U8,
70 AFMT_STEREO | AFMT_S8,
72 AFMT_STEREO | AFMT_S16_LE,
74 AFMT_STEREO | AFMT_U16_LE,
78 static struct pcmchan_caps ess_reccaps = {6000, 48000, ess_rfmt, 0};
83 struct ess_info *parent;
84 struct pcm_channel *channel;
85 struct snd_dbuf *buffer;
86 int dir, hwch, stopping, run;
87 u_int32_t fmt, spd, blksz;
92 struct resource *io_base; /* I/O address for the board */
94 struct resource *drq1;
95 struct resource *drq2;
97 bus_dma_tag_t parent_dmat;
100 int type, duplex:1, newspeed:1;
101 u_long bd_flags; /* board-specific flags */
102 struct ess_chinfo pch, rch;
106 static int ess_rd(struct ess_info *sc, int reg);
107 static void ess_wr(struct ess_info *sc, int reg, u_int8_t val);
108 static int ess_dspready(struct ess_info *sc);
109 static int ess_cmd(struct ess_info *sc, u_char val);
110 static int ess_cmd1(struct ess_info *sc, u_char cmd, int val);
111 static int ess_get_byte(struct ess_info *sc);
112 static void ess_setmixer(struct ess_info *sc, u_int port, u_int value);
113 static int ess_getmixer(struct ess_info *sc, u_int port);
114 static int ess_reset_dsp(struct ess_info *sc);
116 static int ess_write(struct ess_info *sc, u_char reg, int val);
117 static int ess_read(struct ess_info *sc, u_char reg);
119 static void ess_intr(void *arg);
120 static int ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len);
121 static int ess_start(struct ess_chinfo *ch);
122 static int ess_stop(struct ess_chinfo *ch);
126 * Common code for the midi and pcm functions
128 * ess_cmd write a single byte to the CMD port.
129 * ess_cmd1 write a CMD + 1 byte arg
130 * ess_cmd2 write a CMD + 2 byte arg
131 * ess_get_byte returns a single byte from the DSP data port
133 * ess_write is actually ess_cmd1
134 * ess_read access ext. regs via ess_cmd(0xc0, reg) followed by ess_get_byte
138 ess_lock(struct ess_info *sc) {
140 sbc_lock(device_get_softc(sc->parent_dev));
144 ess_unlock(struct ess_info *sc) {
146 sbc_unlock(device_get_softc(sc->parent_dev));
150 port_rd(struct resource *port, int off)
152 return bus_space_read_1(rman_get_bustag(port),
153 rman_get_bushandle(port),
158 port_wr(struct resource *port, int off, u_int8_t data)
160 bus_space_write_1(rman_get_bustag(port),
161 rman_get_bushandle(port),
166 ess_rd(struct ess_info *sc, int reg)
168 return port_rd(sc->io_base, reg);
172 ess_wr(struct ess_info *sc, int reg, u_int8_t val)
174 port_wr(sc->io_base, reg, val);
178 ess_dspready(struct ess_info *sc)
180 return ((ess_rd(sc, SBDSP_STATUS) & 0x80) == 0);
184 ess_dspwr(struct ess_info *sc, u_char val)
188 for (i = 0; i < 1000; i++) {
189 if (ess_dspready(sc)) {
190 ess_wr(sc, SBDSP_CMD, val);
193 if (i > 10) DELAY((i > 100)? 1000 : 10);
195 printf("ess_dspwr(0x%02x) timed out.\n", val);
200 ess_cmd(struct ess_info *sc, u_char val)
203 printf("ess_cmd: %x\n", val);
205 return ess_dspwr(sc, val);
209 ess_cmd1(struct ess_info *sc, u_char cmd, int val)
212 printf("ess_cmd1: %x, %x\n", cmd, val);
214 if (ess_dspwr(sc, cmd)) {
215 return ess_dspwr(sc, val & 0xff);
220 ess_setmixer(struct ess_info *sc, u_int port, u_int value)
222 DEB(printf("ess_setmixer: reg=%x, val=%x\n", port, value);)
223 ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
225 ess_wr(sc, SB_MIX_DATA, (u_char) (value & 0xff));
230 ess_getmixer(struct ess_info *sc, u_int port)
233 ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
235 val = ess_rd(sc, SB_MIX_DATA);
242 ess_get_byte(struct ess_info *sc)
246 for (i = 1000; i > 0; i--) {
247 if (ess_rd(sc, DSP_DATA_AVAIL) & 0x80)
248 return ess_rd(sc, DSP_READ);
256 ess_write(struct ess_info *sc, u_char reg, int val)
258 return ess_cmd1(sc, reg, val);
262 ess_read(struct ess_info *sc, u_char reg)
264 return (ess_cmd(sc, 0xc0) && ess_cmd(sc, reg))? ess_get_byte(sc) : -1;
268 ess_reset_dsp(struct ess_info *sc)
270 ess_wr(sc, SBDSP_RST, 3);
272 ess_wr(sc, SBDSP_RST, 0);
273 if (ess_get_byte(sc) != 0xAA) {
274 DEB(printf("ess_reset_dsp 0x%lx failed\n",
275 rman_get_start(sc->io_base)));
276 return ENXIO; /* Sorry */
283 ess_release_resources(struct ess_info *sc, device_t dev)
287 bus_teardown_intr(dev, sc->irq, sc->ih);
288 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
292 isa_dma_release(rman_get_start(sc->drq1));
293 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->drq1);
297 isa_dma_release(rman_get_start(sc->drq2));
298 bus_release_resource(dev, SYS_RES_DRQ, 1, sc->drq2);
302 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->io_base);
305 if (sc->parent_dmat) {
306 bus_dma_tag_destroy(sc->parent_dmat);
313 ess_alloc_resources(struct ess_info *sc, device_t dev)
319 sc->io_base = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
323 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
327 sc->drq1 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
331 sc->drq2 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
334 if (sc->io_base && sc->drq1 && sc->irq) {
335 isa_dma_acquire(rman_get_start(sc->drq1));
336 isa_dmainit(rman_get_start(sc->drq1), sc->bufsize);
339 isa_dma_acquire(rman_get_start(sc->drq2));
340 isa_dmainit(rman_get_start(sc->drq2), sc->bufsize);
350 struct ess_info *sc = (struct ess_info *)arg;
355 if (ess_getmixer(sc, 0x7a) & 0x80)
357 if (ess_rd(sc, 0x0c) & 0x01)
360 pirq = (src & sc->pch.hwch)? 1 : 0;
361 rirq = (src & sc->rch.hwch)? 1 : 0;
366 chn_intr(sc->pch.channel);
369 if (sc->pch.stopping) {
371 sndbuf_dma(sc->pch.buffer, PCMTRIG_STOP);
372 sc->pch.stopping = 0;
373 if (sc->pch.hwch == 1)
374 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
376 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x03);
383 chn_intr(sc->rch.channel);
386 if (sc->rch.stopping) {
388 sndbuf_dma(sc->rch.buffer, PCMTRIG_STOP);
389 sc->rch.stopping = 0;
390 /* XXX: will this stop audio2? */
391 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
396 ess_setmixer(sc, 0x7a, ess_getmixer(sc, 0x7a) & ~0x80);
398 ess_rd(sc, DSP_DATA_AVAIL);
402 /* utility functions for ESS */
404 ess_calcspeed8(int *spd)
410 t = (795500 + speed / 2) / speed;
411 speed = (795500 + t / 2) / t;
412 t = (256 - t) | 0x80;
414 t = (397700 + speed / 2) / speed;
415 speed = (397700 + t / 2) / t;
419 return t & 0x000000ff;
423 ess_calcspeed9(int *spd)
425 int speed, s0, s1, use0;
428 /* rate = source / (256 - divisor) */
429 /* divisor = 256 - (source / rate) */
431 t0 = 128 - (793800 / speed);
432 s0 = 793800 / (128 - t0);
434 t1 = 128 - (768000 / speed);
435 s1 = 768000 / (128 - t1);
438 use0 = (ABS(speed - s0) < ABS(speed - s1))? 1 : 0;
440 *spd = use0? s0 : s1;
441 return use0? t0 : t1;
445 ess_calcfilter(int spd)
449 /* cutoff = 7160000 / (256 - divisor) */
450 /* divisor = 256 - (7160000 / cutoff) */
451 cutoff = (spd * 9 * 82) / 20;
452 return (256 - (7160000 / cutoff));
456 ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len)
458 int play = (dir == PCMDIR_PLAY)? 1 : 0;
459 int b16 = (fmt & AFMT_16BIT)? 1 : 0;
460 int stereo = (fmt & AFMT_STEREO)? 1 : 0;
461 int unsign = (fmt == AFMT_U8 || fmt == AFMT_U16_LE)? 1 : 0;
462 u_int8_t spdval, fmtval;
465 spdval = (sc->newspeed)? ess_calcspeed9(&spd) : ess_calcspeed8(&spd);
469 KASSERT((dir == PCMDIR_PLAY) || (dir == PCMDIR_REC), ("ess_setupch: dir1 bad"));
470 /* transfer length low */
471 ess_write(sc, 0xa4, len & 0x00ff);
472 /* transfer length high */
473 ess_write(sc, 0xa5, (len & 0xff00) >> 8);
474 /* autoinit, dma dir */
475 ess_write(sc, 0xb8, 0x04 | (play? 0x00 : 0x0a));
477 ess_write(sc, 0xa8, (ess_read(sc, 0xa8) & ~0x03) | (stereo? 0x01 : 0x02));
478 /* demand mode, 4 bytes/xfer */
479 ess_write(sc, 0xb9, 0x02);
481 ess_write(sc, 0xa1, spdval);
483 ess_write(sc, 0xa2, ess_calcfilter(spd));
486 ess_write(sc, 0xb6, unsign? 0x80 : 0x00);
487 /* mono, b16: signed, load signal */
488 ess_write(sc, 0xb7, 0x51 | (unsign? 0x00 : 0x20));
490 ess_write(sc, 0xb7, 0x90 | (unsign? 0x00 : 0x20) |
492 (stereo? 0x08 : 0x40));
494 ess_write(sc, 0xb1, (ess_read(sc, 0xb1) & 0x0f) | 0x50);
496 ess_write(sc, 0xb2, (ess_read(sc, 0xb2) & 0x0f) | 0x50);
497 } else if (ch == 2) {
498 KASSERT(dir == PCMDIR_PLAY, ("ess_setupch: dir2 bad"));
499 /* transfer length low */
500 ess_setmixer(sc, 0x74, len & 0x00ff);
501 /* transfer length high */
502 ess_setmixer(sc, 0x76, (len & 0xff00) >> 8);
503 /* autoinit, 4 bytes/req */
504 ess_setmixer(sc, 0x78, 0x90);
505 fmtval = b16 | (stereo << 1) | (unsign << 2);
506 /* enable irq, set format */
507 ess_setmixer(sc, 0x7a, 0x40 | fmtval);
510 ess_setmixer(sc, 0x70, spdval);
512 ess_setmixer(sc, 0x72, ess_calcfilter(spd));
519 ess_start(struct ess_chinfo *ch)
521 struct ess_info *sc = ch->parent;
522 int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
525 ess_setupch(sc, ch->hwch, ch->dir, ch->spd, ch->fmt, ch->blksz);
528 ess_write(sc, 0xb8, ess_read(sc, 0xb8) | 0x01);
530 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) | 0x03);
532 ess_cmd(sc, DSP_CMD_SPKON);
538 ess_stop(struct ess_chinfo *ch)
540 struct ess_info *sc = ch->parent;
541 int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
546 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x04);
548 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x10);
550 ess_cmd(sc, DSP_CMD_SPKOFF);
555 /* -------------------------------------------------------------------- */
556 /* channel interface for ESS18xx */
558 esschan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
560 struct ess_info *sc = devinfo;
561 struct ess_chinfo *ch = (dir == PCMDIR_PLAY)? &sc->pch : &sc->rch;
566 if (sndbuf_alloc(ch->buffer, sc->parent_dmat, sc->bufsize) != 0)
570 if ((dir == PCMDIR_PLAY) && (sc->duplex))
572 sndbuf_dmasetup(ch->buffer, (ch->hwch == 1)? sc->drq1 : sc->drq2);
577 esschan_setformat(kobj_t obj, void *data, u_int32_t format)
579 struct ess_chinfo *ch = data;
586 esschan_setspeed(kobj_t obj, void *data, u_int32_t speed)
588 struct ess_chinfo *ch = data;
589 struct ess_info *sc = ch->parent;
593 ess_calcspeed9(&ch->spd);
595 ess_calcspeed8(&ch->spd);
600 esschan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
602 struct ess_chinfo *ch = data;
604 ch->blksz = blocksize;
609 esschan_trigger(kobj_t obj, void *data, int go)
611 struct ess_chinfo *ch = data;
613 if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD)
619 sndbuf_dma(ch->buffer, go);
633 esschan_getptr(kobj_t obj, void *data)
635 struct ess_chinfo *ch = data;
637 return sndbuf_dmaptr(ch->buffer);
640 static struct pcmchan_caps *
641 esschan_getcaps(kobj_t obj, void *data)
643 struct ess_chinfo *ch = data;
645 return (ch->dir == PCMDIR_PLAY)? &ess_playcaps : &ess_reccaps;
648 static kobj_method_t esschan_methods[] = {
649 KOBJMETHOD(channel_init, esschan_init),
650 KOBJMETHOD(channel_setformat, esschan_setformat),
651 KOBJMETHOD(channel_setspeed, esschan_setspeed),
652 KOBJMETHOD(channel_setblocksize, esschan_setblocksize),
653 KOBJMETHOD(channel_trigger, esschan_trigger),
654 KOBJMETHOD(channel_getptr, esschan_getptr),
655 KOBJMETHOD(channel_getcaps, esschan_getcaps),
658 CHANNEL_DECLARE(esschan);
660 /************************************************************/
663 essmix_init(struct snd_mixer *m)
665 struct ess_info *sc = mix_getdevinfo(m);
667 mix_setrecdevs(m, SOUND_MASK_CD | SOUND_MASK_MIC | SOUND_MASK_LINE |
670 mix_setdevs(m, SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE |
671 SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_VOLUME |
672 SOUND_MASK_LINE1 | SOUND_MASK_SPEAKER);
674 ess_setmixer(sc, 0, 0); /* reset */
680 essmix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
682 struct ess_info *sc = mix_getdevinfo(m);
683 int preg = 0, rreg = 0, l, r;
685 l = (left * 15) / 100;
686 r = (right * 15) / 100;
688 case SOUND_MIXER_SYNTH:
693 case SOUND_MIXER_PCM:
698 case SOUND_MIXER_LINE:
703 case SOUND_MIXER_MIC:
708 case SOUND_MIXER_LINE1:
718 case SOUND_MIXER_SPEAKER:
722 case SOUND_MIXER_VOLUME:
723 l = left? (left * 63) / 100 : 64;
724 r = right? (right * 63) / 100 : 64;
725 ess_setmixer(sc, 0x60, l);
726 ess_setmixer(sc, 0x62, r);
727 left = (l == 64)? 0 : (l * 100) / 63;
728 right = (r == 64)? 0 : (r * 100) / 63;
729 return left | (right << 8);
733 ess_setmixer(sc, preg, (l << 4) | r);
735 ess_setmixer(sc, rreg, (l << 4) | r);
737 left = (l * 100) / 15;
738 right = (r * 100) / 15;
740 return left | (right << 8);
744 essmix_setrecsrc(struct snd_mixer *m, u_int32_t src)
746 struct ess_info *sc = mix_getdevinfo(m);
754 case SOUND_MASK_LINE:
758 case SOUND_MASK_IMIX:
765 src = SOUND_MASK_MIC;
769 ess_setmixer(sc, 0x1c, recdev);
774 static kobj_method_t essmixer_methods[] = {
775 KOBJMETHOD(mixer_init, essmix_init),
776 KOBJMETHOD(mixer_set, essmix_set),
777 KOBJMETHOD(mixer_setrecsrc, essmix_setrecsrc),
780 MIXER_DECLARE(essmixer);
782 /************************************************************/
785 ess_probe(device_t dev)
787 uintptr_t func, ver, r, f;
789 /* The parent device has already been probed. */
790 r = BUS_READ_IVAR(device_get_parent(dev), dev, 0, &func);
794 r = BUS_READ_IVAR(device_get_parent(dev), dev, 1, &ver);
795 f = (ver & 0xffff0000) >> 16;
799 device_set_desc(dev, "ESS 18xx DSP");
805 ess_attach(device_t dev)
808 char status[SND_STATUSLEN], buf[64];
811 sc = (struct ess_info *)malloc(sizeof *sc, M_DEVBUF, M_NOWAIT | M_ZERO);
815 sc->parent_dev = device_get_parent(dev);
816 sc->bufsize = pcm_getbuffersize(dev, 4096, ESS_BUFFSIZE, 65536);
817 if (ess_alloc_resources(sc, dev))
819 if (ess_reset_dsp(sc))
821 if (mixer_init(dev, &essmixer_class, sc))
826 ver = (ess_getmixer(sc, 0x40) << 8) | ess_rd(sc, SB_MIX_DATA);
827 snprintf(buf, sizeof buf, "ESS %x DSP", ver);
828 device_set_desc_copy(dev, buf);
830 device_printf(dev, "ESS%x detected", ver);
835 #ifdef ESS18XX_DUPLEX
836 sc->duplex = sc->drq2? 1 : 0;
838 #ifdef ESS18XX_NEWSPEED
844 printf("%s%s\n", sc->duplex? ", duplex" : "",
845 sc->newspeed? ", newspeed" : "");
848 ess_setmixer(sc, 0x71, 0x22);
850 snd_setup_intr(dev, sc->irq, 0, ess_intr, sc, &sc->ih);
852 pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
854 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
856 /*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
857 /*highaddr*/BUS_SPACE_MAXADDR,
858 /*filter*/NULL, /*filterarg*/NULL,
859 /*maxsize*/sc->bufsize, /*nsegments*/1,
861 /*flags*/0, /*lockfunc*/busdma_lock_mutex,
862 /*lockarg*/&Giant, &sc->parent_dmat) != 0) {
863 device_printf(dev, "unable to create dma tag\n");
868 snprintf(buf, SND_STATUSLEN, ":%ld", rman_get_start(sc->drq2));
872 snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld drq %ld%s bufsz %u %s",
873 rman_get_start(sc->io_base), rman_get_start(sc->irq),
874 rman_get_start(sc->drq1), buf, sc->bufsize,
875 PCM_KLDSTRING(snd_ess));
877 if (pcm_register(dev, sc, 1, 1))
879 pcm_addchan(dev, PCMDIR_REC, &esschan_class, sc);
880 pcm_addchan(dev, PCMDIR_PLAY, &esschan_class, sc);
881 pcm_setstatus(dev, status);
886 ess_release_resources(sc, dev);
891 ess_detach(device_t dev)
896 r = pcm_unregister(dev);
900 sc = pcm_getdevinfo(dev);
901 ess_release_resources(sc, dev);
906 ess_resume(device_t dev)
910 sc = pcm_getdevinfo(dev);
912 if (ess_reset_dsp(sc)) {
913 device_printf(dev, "unable to reset DSP at resume\n");
917 if (mixer_reinit(dev)) {
918 device_printf(dev, "unable to reinitialize mixer at resume\n");
925 static device_method_t ess_methods[] = {
926 /* Device interface */
927 DEVMETHOD(device_probe, ess_probe),
928 DEVMETHOD(device_attach, ess_attach),
929 DEVMETHOD(device_detach, ess_detach),
930 DEVMETHOD(device_resume, ess_resume),
935 static driver_t ess_driver = {
941 DRIVER_MODULE(snd_ess, sbc, ess_driver, pcm_devclass, 0, 0);
942 MODULE_DEPEND(snd_ess, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
943 MODULE_DEPEND(snd_ess, snd_sbc, 1, 1, 1);
944 MODULE_VERSION(snd_ess, 1);
946 /************************************************************/
948 static devclass_t esscontrol_devclass;
950 static struct isa_pnp_id essc_ids[] = {
951 {0x06007316, "ESS Control"},
956 esscontrol_probe(device_t dev)
960 i = ISA_PNP_PROBE(device_get_parent(dev), dev, essc_ids);
967 esscontrol_attach(device_t dev)
974 io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
976 for (i = 0; i < 0x100; i++) {
980 printf("%3.3x: ", i);
982 if ((i & 0x0f) == 0x0f)
985 bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
993 esscontrol_detach(device_t dev)
998 static device_method_t esscontrol_methods[] = {
999 /* Device interface */
1000 DEVMETHOD(device_probe, esscontrol_probe),
1001 DEVMETHOD(device_attach, esscontrol_attach),
1002 DEVMETHOD(device_detach, esscontrol_detach),
1007 static driver_t esscontrol_driver = {
1013 DRIVER_MODULE(esscontrol, isa, esscontrol_driver, esscontrol_devclass, 0, 0);
1014 DRIVER_MODULE(esscontrol, acpi, esscontrol_driver, esscontrol_devclass, 0, 0);