2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
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 1.34.2.2 2006/01/19 01:17:00 ariff Exp $
34 #include <dev/sound/pcm/sound.h>
36 #include <dev/sound/isa/sb.h>
37 #include <dev/sound/chip.h>
39 #include <bus/isa/isavar.h>
43 SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/isa/ess.c,v 1.7 2007/01/04 21:47:02 corecode Exp $");
45 #define ESS_BUFFSIZE (4096)
46 #define ABS(x) (((x) < 0)? -(x) : (x))
48 /* audio2 never generates irqs and sounds very noisy */
51 /* more accurate clocks and split audio1/audio2 rates */
52 #define ESS18XX_NEWSPEED
54 static u_int32_t ess_pfmt[] = {
56 AFMT_STEREO | AFMT_U8,
58 AFMT_STEREO | AFMT_S8,
60 AFMT_STEREO | AFMT_S16_LE,
62 AFMT_STEREO | AFMT_U16_LE,
66 static struct pcmchan_caps ess_playcaps = {6000, 48000, ess_pfmt, 0};
68 static u_int32_t ess_rfmt[] = {
70 AFMT_STEREO | AFMT_U8,
72 AFMT_STEREO | AFMT_S8,
74 AFMT_STEREO | AFMT_S16_LE,
76 AFMT_STEREO | AFMT_U16_LE,
80 static struct pcmchan_caps ess_reccaps = {6000, 48000, ess_rfmt, 0};
85 struct ess_info *parent;
86 struct pcm_channel *channel;
87 struct snd_dbuf *buffer;
88 int dir, hwch, stopping, run;
89 u_int32_t fmt, spd, blksz;
94 struct resource *io_base; /* I/O address for the board */
96 struct resource *drq1;
97 struct resource *drq2;
99 bus_dma_tag_t parent_dmat;
101 unsigned int bufsize;
102 int type, duplex:1, newspeed:1;
103 u_long bd_flags; /* board-specific flags */
104 struct ess_chinfo pch, rch;
108 static int ess_rd(struct ess_info *sc, int reg);
109 static void ess_wr(struct ess_info *sc, int reg, u_int8_t val);
110 static int ess_dspready(struct ess_info *sc);
111 static int ess_cmd(struct ess_info *sc, u_char val);
112 static int ess_cmd1(struct ess_info *sc, u_char cmd, int val);
113 static int ess_get_byte(struct ess_info *sc);
114 static void ess_setmixer(struct ess_info *sc, u_int port, u_int value);
115 static int ess_getmixer(struct ess_info *sc, u_int port);
116 static int ess_reset_dsp(struct ess_info *sc);
118 static int ess_write(struct ess_info *sc, u_char reg, int val);
119 static int ess_read(struct ess_info *sc, u_char reg);
121 static void ess_intr(void *arg);
122 static int ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len);
123 static int ess_start(struct ess_chinfo *ch);
124 static int ess_stop(struct ess_chinfo *ch);
128 * Common code for the midi and pcm functions
130 * ess_cmd write a single byte to the CMD port.
131 * ess_cmd1 write a CMD + 1 byte arg
132 * ess_cmd2 write a CMD + 2 byte arg
133 * ess_get_byte returns a single byte from the DSP data port
135 * ess_write is actually ess_cmd1
136 * ess_read access ext. regs via ess_cmd(0xc0, reg) followed by ess_get_byte
140 ess_lock(struct ess_info *sc) {
142 sbc_lock(device_get_softc(sc->parent_dev));
146 ess_unlock(struct ess_info *sc) {
148 sbc_unlock(device_get_softc(sc->parent_dev));
152 port_rd(struct resource *port, int off)
154 return bus_space_read_1(rman_get_bustag(port),
155 rman_get_bushandle(port),
160 port_wr(struct resource *port, int off, u_int8_t data)
162 bus_space_write_1(rman_get_bustag(port),
163 rman_get_bushandle(port),
168 ess_rd(struct ess_info *sc, int reg)
170 return port_rd(sc->io_base, reg);
174 ess_wr(struct ess_info *sc, int reg, u_int8_t val)
176 port_wr(sc->io_base, reg, val);
180 ess_dspready(struct ess_info *sc)
182 return ((ess_rd(sc, SBDSP_STATUS) & 0x80) == 0);
186 ess_dspwr(struct ess_info *sc, u_char val)
190 for (i = 0; i < 1000; i++) {
191 if (ess_dspready(sc)) {
192 ess_wr(sc, SBDSP_CMD, val);
195 if (i > 10) DELAY((i > 100)? 1000 : 10);
197 kprintf("ess_dspwr(0x%02x) timed out.\n", val);
202 ess_cmd(struct ess_info *sc, u_char val)
205 kprintf("ess_cmd: %x\n", val);
207 return ess_dspwr(sc, val);
211 ess_cmd1(struct ess_info *sc, u_char cmd, int val)
214 kprintf("ess_cmd1: %x, %x\n", cmd, val);
216 if (ess_dspwr(sc, cmd)) {
217 return ess_dspwr(sc, val & 0xff);
222 ess_setmixer(struct ess_info *sc, u_int port, u_int value)
224 DEB(kprintf("ess_setmixer: reg=%x, val=%x\n", port, value);)
225 ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
227 ess_wr(sc, SB_MIX_DATA, (u_char) (value & 0xff));
232 ess_getmixer(struct ess_info *sc, u_int port)
235 ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
237 val = ess_rd(sc, SB_MIX_DATA);
244 ess_get_byte(struct ess_info *sc)
248 for (i = 1000; i > 0; i--) {
249 if (ess_rd(sc, DSP_DATA_AVAIL) & 0x80)
250 return ess_rd(sc, DSP_READ);
258 ess_write(struct ess_info *sc, u_char reg, int val)
260 return ess_cmd1(sc, reg, val);
264 ess_read(struct ess_info *sc, u_char reg)
266 return (ess_cmd(sc, 0xc0) && ess_cmd(sc, reg))? ess_get_byte(sc) : -1;
270 ess_reset_dsp(struct ess_info *sc)
272 ess_wr(sc, SBDSP_RST, 3);
274 ess_wr(sc, SBDSP_RST, 0);
275 if (ess_get_byte(sc) != 0xAA) {
276 DEB(kprintf("ess_reset_dsp 0x%lx failed\n",
277 rman_get_start(sc->io_base)));
278 return ENXIO; /* Sorry */
285 ess_release_resources(struct ess_info *sc, device_t dev)
289 bus_teardown_intr(dev, sc->irq, sc->ih);
290 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
294 isa_dma_release(rman_get_start(sc->drq1));
295 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->drq1);
299 isa_dma_release(rman_get_start(sc->drq2));
300 bus_release_resource(dev, SYS_RES_DRQ, 1, sc->drq2);
304 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->io_base);
307 if (sc->parent_dmat) {
308 bus_dma_tag_destroy(sc->parent_dmat);
315 ess_alloc_resources(struct ess_info *sc, device_t dev)
321 sc->io_base = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
325 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
329 sc->drq1 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
333 sc->drq2 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
336 if (sc->io_base && sc->drq1 && sc->irq) {
337 isa_dma_acquire(rman_get_start(sc->drq1));
338 isa_dmainit(rman_get_start(sc->drq1), sc->bufsize);
341 isa_dma_acquire(rman_get_start(sc->drq2));
342 isa_dmainit(rman_get_start(sc->drq2), sc->bufsize);
352 struct ess_info *sc = (struct ess_info *)arg;
357 if (ess_getmixer(sc, 0x7a) & 0x80)
359 if (ess_rd(sc, 0x0c) & 0x01)
362 pirq = (src & sc->pch.hwch)? 1 : 0;
363 rirq = (src & sc->rch.hwch)? 1 : 0;
368 chn_intr(sc->pch.channel);
371 if (sc->pch.stopping) {
373 sndbuf_dma(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);
385 chn_intr(sc->rch.channel);
388 if (sc->rch.stopping) {
390 sndbuf_dma(sc->rch.buffer, PCMTRIG_STOP);
391 sc->rch.stopping = 0;
392 /* XXX: will this stop audio2? */
393 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
398 ess_setmixer(sc, 0x7a, ess_getmixer(sc, 0x7a) & ~0x80);
400 ess_rd(sc, DSP_DATA_AVAIL);
404 /* utility functions for ESS */
406 ess_calcspeed8(int *spd)
412 t = (795500 + speed / 2) / speed;
413 speed = (795500 + t / 2) / t;
414 t = (256 - t) | 0x80;
416 t = (397700 + speed / 2) / speed;
417 speed = (397700 + t / 2) / t;
421 return t & 0x000000ff;
425 ess_calcspeed9(int *spd)
427 int speed, s0, s1, use0;
430 /* rate = source / (256 - divisor) */
431 /* divisor = 256 - (source / rate) */
433 t0 = 128 - (793800 / speed);
434 s0 = 793800 / (128 - t0);
436 t1 = 128 - (768000 / speed);
437 s1 = 768000 / (128 - t1);
440 use0 = (ABS(speed - s0) < ABS(speed - s1))? 1 : 0;
442 *spd = use0? s0 : s1;
443 return use0? t0 : t1;
447 ess_calcfilter(int spd)
451 /* cutoff = 7160000 / (256 - divisor) */
452 /* divisor = 256 - (7160000 / cutoff) */
453 cutoff = (spd * 9 * 82) / 20;
454 return (256 - (7160000 / cutoff));
458 ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len)
460 int play = (dir == PCMDIR_PLAY)? 1 : 0;
461 int b16 = (fmt & AFMT_16BIT)? 1 : 0;
462 int stereo = (fmt & AFMT_STEREO)? 1 : 0;
463 int unsign = (fmt == AFMT_U8 || fmt == AFMT_U16_LE)? 1 : 0;
464 u_int8_t spdval, fmtval;
467 spdval = (sc->newspeed)? ess_calcspeed9(&spd) : ess_calcspeed8(&spd);
471 KASSERT((dir == PCMDIR_PLAY) || (dir == PCMDIR_REC), ("ess_setupch: dir1 bad"));
472 /* transfer length low */
473 ess_write(sc, 0xa4, len & 0x00ff);
474 /* transfer length high */
475 ess_write(sc, 0xa5, (len & 0xff00) >> 8);
476 /* autoinit, dma dir */
477 ess_write(sc, 0xb8, 0x04 | (play? 0x00 : 0x0a));
479 ess_write(sc, 0xa8, (ess_read(sc, 0xa8) & ~0x03) | (stereo? 0x01 : 0x02));
480 /* demand mode, 4 bytes/xfer */
481 ess_write(sc, 0xb9, 0x02);
483 ess_write(sc, 0xa1, spdval);
485 ess_write(sc, 0xa2, ess_calcfilter(spd));
488 ess_write(sc, 0xb6, unsign? 0x80 : 0x00);
489 /* mono, b16: signed, load signal */
490 ess_write(sc, 0xb7, 0x51 | (unsign? 0x00 : 0x20));
492 ess_write(sc, 0xb7, 0x90 | (unsign? 0x00 : 0x20) |
494 (stereo? 0x08 : 0x40));
496 ess_write(sc, 0xb1, (ess_read(sc, 0xb1) & 0x0f) | 0x50);
498 ess_write(sc, 0xb2, (ess_read(sc, 0xb2) & 0x0f) | 0x50);
499 } else if (ch == 2) {
500 KASSERT(dir == PCMDIR_PLAY, ("ess_setupch: dir2 bad"));
501 /* transfer length low */
502 ess_setmixer(sc, 0x74, len & 0x00ff);
503 /* transfer length high */
504 ess_setmixer(sc, 0x76, (len & 0xff00) >> 8);
505 /* autoinit, 4 bytes/req */
506 ess_setmixer(sc, 0x78, 0x90);
507 fmtval = b16 | (stereo << 1) | (unsign << 2);
508 /* enable irq, set format */
509 ess_setmixer(sc, 0x7a, 0x40 | fmtval);
512 ess_setmixer(sc, 0x70, spdval);
514 ess_setmixer(sc, 0x72, ess_calcfilter(spd));
521 ess_start(struct ess_chinfo *ch)
523 struct ess_info *sc = ch->parent;
524 int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
527 ess_setupch(sc, ch->hwch, ch->dir, ch->spd, ch->fmt, ch->blksz);
530 ess_write(sc, 0xb8, ess_read(sc, 0xb8) | 0x01);
532 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) | 0x03);
534 ess_cmd(sc, DSP_CMD_SPKON);
540 ess_stop(struct ess_chinfo *ch)
542 struct ess_info *sc = ch->parent;
543 int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
548 ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x04);
550 ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x10);
552 ess_cmd(sc, DSP_CMD_SPKOFF);
557 /* -------------------------------------------------------------------- */
558 /* channel interface for ESS18xx */
560 esschan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
562 struct ess_info *sc = devinfo;
563 struct ess_chinfo *ch = (dir == PCMDIR_PLAY)? &sc->pch : &sc->rch;
568 if (sndbuf_alloc(ch->buffer, sc->parent_dmat, sc->bufsize) != 0)
572 if ((dir == PCMDIR_PLAY) && (sc->duplex))
574 sndbuf_dmasetup(ch->buffer, (ch->hwch == 1)? sc->drq1 : sc->drq2);
579 esschan_setformat(kobj_t obj, void *data, u_int32_t format)
581 struct ess_chinfo *ch = data;
588 esschan_setspeed(kobj_t obj, void *data, u_int32_t speed)
590 struct ess_chinfo *ch = data;
591 struct ess_info *sc = ch->parent;
595 ess_calcspeed9(&ch->spd);
597 ess_calcspeed8(&ch->spd);
602 esschan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
604 struct ess_chinfo *ch = data;
606 ch->blksz = blocksize;
611 esschan_trigger(kobj_t obj, void *data, int go)
613 struct ess_chinfo *ch = data;
615 if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD)
621 sndbuf_dma(ch->buffer, go);
635 esschan_getptr(kobj_t obj, void *data)
637 struct ess_chinfo *ch = data;
639 return sndbuf_dmaptr(ch->buffer);
642 static struct pcmchan_caps *
643 esschan_getcaps(kobj_t obj, void *data)
645 struct ess_chinfo *ch = data;
647 return (ch->dir == PCMDIR_PLAY)? &ess_playcaps : &ess_reccaps;
650 static kobj_method_t esschan_methods[] = {
651 KOBJMETHOD(channel_init, esschan_init),
652 KOBJMETHOD(channel_setformat, esschan_setformat),
653 KOBJMETHOD(channel_setspeed, esschan_setspeed),
654 KOBJMETHOD(channel_setblocksize, esschan_setblocksize),
655 KOBJMETHOD(channel_trigger, esschan_trigger),
656 KOBJMETHOD(channel_getptr, esschan_getptr),
657 KOBJMETHOD(channel_getcaps, esschan_getcaps),
660 CHANNEL_DECLARE(esschan);
662 /************************************************************/
665 essmix_init(struct snd_mixer *m)
667 struct ess_info *sc = mix_getdevinfo(m);
669 mix_setrecdevs(m, SOUND_MASK_CD | SOUND_MASK_MIC | SOUND_MASK_LINE |
672 mix_setdevs(m, SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE |
673 SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_VOLUME |
674 SOUND_MASK_LINE1 | SOUND_MASK_SPEAKER);
676 ess_setmixer(sc, 0, 0); /* reset */
682 essmix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
684 struct ess_info *sc = mix_getdevinfo(m);
685 int preg = 0, rreg = 0, l, r;
687 l = (left * 15) / 100;
688 r = (right * 15) / 100;
690 case SOUND_MIXER_SYNTH:
695 case SOUND_MIXER_PCM:
700 case SOUND_MIXER_LINE:
705 case SOUND_MIXER_MIC:
710 case SOUND_MIXER_LINE1:
720 case SOUND_MIXER_SPEAKER:
724 case SOUND_MIXER_VOLUME:
725 l = left? (left * 63) / 100 : 64;
726 r = right? (right * 63) / 100 : 64;
727 ess_setmixer(sc, 0x60, l);
728 ess_setmixer(sc, 0x62, r);
729 left = (l == 64)? 0 : (l * 100) / 63;
730 right = (r == 64)? 0 : (r * 100) / 63;
731 return left | (right << 8);
735 ess_setmixer(sc, preg, (l << 4) | r);
737 ess_setmixer(sc, rreg, (l << 4) | r);
739 left = (l * 100) / 15;
740 right = (r * 100) / 15;
742 return left | (right << 8);
746 essmix_setrecsrc(struct snd_mixer *m, u_int32_t src)
748 struct ess_info *sc = mix_getdevinfo(m);
756 case SOUND_MASK_LINE:
760 case SOUND_MASK_IMIX:
767 src = SOUND_MASK_MIC;
771 ess_setmixer(sc, 0x1c, recdev);
776 static kobj_method_t essmixer_methods[] = {
777 KOBJMETHOD(mixer_init, essmix_init),
778 KOBJMETHOD(mixer_set, essmix_set),
779 KOBJMETHOD(mixer_setrecsrc, essmix_setrecsrc),
782 MIXER_DECLARE(essmixer);
784 /************************************************************/
787 ess_probe(device_t dev)
789 uintptr_t func, ver, r, f;
791 /* The parent device has already been probed. */
792 r = BUS_READ_IVAR(device_get_parent(dev), dev, 0, &func);
796 r = BUS_READ_IVAR(device_get_parent(dev), dev, 1, &ver);
797 f = (ver & 0xffff0000) >> 16;
801 device_set_desc(dev, "ESS 18xx DSP");
807 ess_attach(device_t dev)
810 char status[SND_STATUSLEN], buf[64];
813 sc = kmalloc(sizeof *sc, M_DEVBUF, M_WAITOK | 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 ksnprintf(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 kprintf("%s%s\n", sc->duplex? ", duplex" : "",
844 sc->newspeed? ", newspeed" : "");
847 ess_setmixer(sc, 0x71, 0x22);
849 snd_setup_intr(dev, sc->irq, 0, 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,
860 &sc->parent_dmat) != 0) {
861 device_printf(dev, "unable to create dma tag\n");
866 ksnprintf(buf, SND_STATUSLEN, ":%ld", rman_get_start(sc->drq2));
870 ksnprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld drq %ld%s bufsz %u %s",
871 rman_get_start(sc->io_base), rman_get_start(sc->irq),
872 rman_get_start(sc->drq1), buf, sc->bufsize,
873 PCM_KLDSTRING(snd_ess));
875 if (pcm_register(dev, sc, 1, 1))
877 pcm_addchan(dev, PCMDIR_REC, &esschan_class, sc);
878 pcm_addchan(dev, PCMDIR_PLAY, &esschan_class, sc);
879 pcm_setstatus(dev, status);
884 ess_release_resources(sc, dev);
889 ess_detach(device_t dev)
894 r = pcm_unregister(dev);
898 sc = pcm_getdevinfo(dev);
899 ess_release_resources(sc, dev);
904 ess_resume(device_t dev)
908 sc = pcm_getdevinfo(dev);
910 if (ess_reset_dsp(sc)) {
911 device_printf(dev, "unable to reset DSP at resume\n");
915 if (mixer_reinit(dev)) {
916 device_printf(dev, "unable to reinitialize mixer at resume\n");
923 static device_method_t ess_methods[] = {
924 /* Device interface */
925 DEVMETHOD(device_probe, ess_probe),
926 DEVMETHOD(device_attach, ess_attach),
927 DEVMETHOD(device_detach, ess_detach),
928 DEVMETHOD(device_resume, ess_resume),
933 static driver_t ess_driver = {
939 DRIVER_MODULE(snd_ess, sbc, ess_driver, pcm_devclass, NULL, NULL);
940 MODULE_DEPEND(snd_ess, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
941 MODULE_DEPEND(snd_ess, snd_sbc, 1, 1, 1);
942 MODULE_VERSION(snd_ess, 1);
944 /************************************************************/
946 static devclass_t esscontrol_devclass;
948 static struct isa_pnp_id essc_ids[] = {
949 {0x06007316, "ESS Control"},
954 esscontrol_probe(device_t dev)
958 i = ISA_PNP_PROBE(device_get_parent(dev), dev, essc_ids);
965 esscontrol_attach(device_t dev)
972 io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
974 for (i = 0; i < 0x100; i++) {
978 kprintf("%3.3x: ", i);
979 kprintf("%2.2x ", x);
980 if ((i & 0x0f) == 0x0f)
983 bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
991 esscontrol_detach(device_t dev)
996 static device_method_t esscontrol_methods[] = {
997 /* Device interface */
998 DEVMETHOD(device_probe, esscontrol_probe),
999 DEVMETHOD(device_attach, esscontrol_attach),
1000 DEVMETHOD(device_detach, esscontrol_detach),
1005 static driver_t esscontrol_driver = {
1011 DRIVER_MODULE(esscontrol, isa, esscontrol_driver, esscontrol_devclass, NULL, NULL);
1012 DRIVER_MODULE(esscontrol, acpi, esscontrol_driver, esscontrol_devclass, NULL, NULL);