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linux/sound/isa/gus/gusextreme.c
Cássio Gabriel 7da8af2541 ALSA: gusextreme: add ISA suspend and resume callbacks 
gusextreme still leaves its ISA PM callbacks disabled because the shared
GF1 core had no suspend and resume path suitable for PM recovery.

Resume on this board needs one extra step before the shared GF1 path can
touch the chip again: the ES1688 side must restore the GF1 routing. Split
that routing sequence into a helper, reuse it for probe and resume, reset
the ES1688 side first on resume, and then wire the driver up to the shared
GUS PM helpers.

This restores usable post-resume GF1 operation on GUS Extreme without
rerunning probe-only detection in the shared GF1 path.

Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260406-b4-alsa-gus-isa-pm-v1-3-b6829a7457cd@gmail.com
2026-04-06 11:08:35 +02:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for Gravis UltraSound Extreme soundcards
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*/
#include <linux/init.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/module.h>
#include <asm/dma.h>
#include <sound/core.h>
#include <sound/gus.h>
#include <sound/es1688.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#define SNDRV_LEGACY_AUTO_PROBE
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>
#define CRD_NAME "Gravis UltraSound Extreme"
#define DEV_NAME "gusextreme"
MODULE_DESCRIPTION(CRD_NAME);
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_LICENSE("GPL");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240,0x260 */
static long gf1_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS) - 1] = -1}; /* 0x210,0x220,0x230,0x240,0x250,0x260,0x270 */
static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS) - 1] = -1}; /* 0x300,0x310,0x320 */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
static int gf1_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 2,3,5,9,11,12,15 */
static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3 */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
/* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
struct snd_gusextreme {
struct snd_es1688 es1688;
struct snd_gus_card *gus;
};
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
module_param_hw_array(port, long, ioport, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
module_param_hw_array(gf1_port, long, ioport, NULL, 0444);
MODULE_PARM_DESC(gf1_port, "GF1 port # for " CRD_NAME " driver (optional).");
module_param_hw_array(mpu_port, long, ioport, NULL, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for " CRD_NAME " driver.");
module_param_hw_array(irq, int, irq, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
module_param_hw_array(mpu_irq, int, irq, NULL, 0444);
MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for " CRD_NAME " driver.");
module_param_hw_array(gf1_irq, int, irq, NULL, 0444);
MODULE_PARM_DESC(gf1_irq, "GF1 IRQ # for " CRD_NAME " driver.");
module_param_hw_array(dma8, int, dma, NULL, 0444);
MODULE_PARM_DESC(dma8, "8-bit DMA # for " CRD_NAME " driver.");
module_param_hw_array(dma1, int, dma, NULL, 0444);
MODULE_PARM_DESC(dma1, "GF1 DMA # for " CRD_NAME " driver.");
module_param_array(joystick_dac, int, NULL, 0444);
MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for " CRD_NAME " driver.");
module_param_array(channels, int, NULL, 0444);
MODULE_PARM_DESC(channels, "GF1 channels for " CRD_NAME " driver.");
module_param_array(pcm_channels, int, NULL, 0444);
MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for " CRD_NAME " driver.");
static int snd_gusextreme_match(struct device *dev, unsigned int n)
{
return enable[n];
}
static int snd_gusextreme_es1688_create(struct snd_card *card,
struct snd_es1688 *chip,
struct device *dev, unsigned int n)
{
static const long possible_ports[] = {0x220, 0x240, 0x260};
static const int possible_irqs[] = {5, 9, 10, 7, -1};
static const int possible_dmas[] = {1, 3, 0, -1};
int i, error;
if (irq[n] == SNDRV_AUTO_IRQ) {
irq[n] = snd_legacy_find_free_irq(possible_irqs);
if (irq[n] < 0) {
dev_err(dev, "unable to find a free IRQ for ES1688\n");
return -EBUSY;
}
}
if (dma8[n] == SNDRV_AUTO_DMA) {
dma8[n] = snd_legacy_find_free_dma(possible_dmas);
if (dma8[n] < 0) {
dev_err(dev, "unable to find a free DMA for ES1688\n");
return -EBUSY;
}
}
if (port[n] != SNDRV_AUTO_PORT)
return snd_es1688_create(card, chip, port[n], mpu_port[n],
irq[n], mpu_irq[n], dma8[n], ES1688_HW_1688);
i = 0;
do {
port[n] = possible_ports[i];
error = snd_es1688_create(card, chip, port[n], mpu_port[n],
irq[n], mpu_irq[n], dma8[n], ES1688_HW_1688);
} while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
return error;
}
static int snd_gusextreme_gus_card_create(struct snd_card *card,
struct device *dev, unsigned int n,
struct snd_gus_card **rgus)
{
static const int possible_irqs[] = {11, 12, 15, 9, 5, 7, 3, -1};
static const int possible_dmas[] = {5, 6, 7, 3, 1, -1};
if (gf1_irq[n] == SNDRV_AUTO_IRQ) {
gf1_irq[n] = snd_legacy_find_free_irq(possible_irqs);
if (gf1_irq[n] < 0) {
dev_err(dev, "unable to find a free IRQ for GF1\n");
return -EBUSY;
}
}
if (dma1[n] == SNDRV_AUTO_DMA) {
dma1[n] = snd_legacy_find_free_dma(possible_dmas);
if (dma1[n] < 0) {
dev_err(dev, "unable to find a free DMA for GF1\n");
return -EBUSY;
}
}
return snd_gus_create(card, gf1_port[n], gf1_irq[n], dma1[n], -1,
0, channels[n], pcm_channels[n], 0, rgus);
}
static void snd_gusextreme_enable_gf1(struct snd_gus_card *gus,
struct snd_es1688 *es1688)
{
/*
* This is main stuff - enable access to GF1 chip...
* I'm not sure, if this will work for card which have
* ES1688 chip in another place than 0x220.
*
* I used reverse-engineering in DOSEMU. [--jk]
*
* ULTRINIT.EXE:
* 0x230 = 0,2,3
* 0x240 = 2,0,1
* 0x250 = 2,0,3
* 0x260 = 2,2,1
*/
scoped_guard(spinlock_irqsave, &es1688->mixer_lock) {
snd_es1688_mixer_write(es1688, 0x40, 0x0b); /* don't change!!! */
}
scoped_guard(spinlock_irqsave, &es1688->reg_lock) {
outb(gus->gf1.port & 0x040 ? 2 : 0, ES1688P(es1688, INIT1));
outb(0, 0x201);
outb(gus->gf1.port & 0x020 ? 2 : 0, ES1688P(es1688, INIT1));
outb(0, 0x201);
outb(gus->gf1.port & 0x010 ? 3 : 1, ES1688P(es1688, INIT1));
}
}
static int snd_gusextreme_detect(struct snd_gus_card *gus,
struct snd_es1688 *es1688)
{
unsigned char d;
snd_gusextreme_enable_gf1(gus, es1688);
udelay(100);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
if ((d & 0x07) != 0) {
dev_dbg(gus->card->dev, "[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
return -EIO;
}
udelay(160);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */
udelay(160);
d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
if ((d & 0x07) != 1) {
dev_dbg(gus->card->dev, "[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
return -EIO;
}
return 0;
}
static int snd_gusextreme_mixer(struct snd_card *card)
{
struct snd_ctl_elem_id id1, id2;
int error;
memset(&id1, 0, sizeof(id1));
memset(&id2, 0, sizeof(id2));
id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
/* reassign AUX to SYNTHESIZER */
strscpy(id1.name, "Aux Playback Volume");
strscpy(id2.name, "Synth Playback Volume");
error = snd_ctl_rename_id(card, &id1, &id2);
if (error < 0)
return error;
/* reassign Master Playback Switch to Synth Playback Switch */
strscpy(id1.name, "Master Playback Switch");
strscpy(id2.name, "Synth Playback Switch");
error = snd_ctl_rename_id(card, &id1, &id2);
if (error < 0)
return error;
return 0;
}
static int snd_gusextreme_probe(struct device *dev, unsigned int n)
{
struct snd_card *card;
struct snd_gus_card *gus;
struct snd_gusextreme *gusextreme;
struct snd_es1688 *es1688;
struct snd_opl3 *opl3;
int error;
error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE,
sizeof(*gusextreme), &card);
if (error < 0)
return error;
gusextreme = card->private_data;
es1688 = &gusextreme->es1688;
if (mpu_port[n] == SNDRV_AUTO_PORT)
mpu_port[n] = 0;
if (mpu_irq[n] > 15)
mpu_irq[n] = -1;
error = snd_gusextreme_es1688_create(card, es1688, dev, n);
if (error < 0)
return error;
if (gf1_port[n] < 0)
gf1_port[n] = es1688->port + 0x20;
error = snd_gusextreme_gus_card_create(card, dev, n, &gus);
if (error < 0)
return error;
gusextreme->gus = gus;
error = snd_gusextreme_detect(gus, es1688);
if (error < 0)
return error;
gus->joystick_dac = joystick_dac[n];
error = snd_gus_initialize(gus);
if (error < 0)
return error;
error = -ENODEV;
if (!gus->ess_flag) {
dev_err(dev, "GUS Extreme soundcard was not "
"detected at 0x%lx\n", gus->gf1.port);
return error;
}
gus->codec_flag = 1;
error = snd_es1688_pcm(card, es1688, 0);
if (error < 0)
return error;
error = snd_es1688_mixer(card, es1688);
if (error < 0)
return error;
snd_component_add(card, "ES1688");
if (pcm_channels[n] > 0) {
error = snd_gf1_pcm_new(gus, 1, 1);
if (error < 0)
return error;
}
error = snd_gf1_new_mixer(gus);
if (error < 0)
return error;
error = snd_gusextreme_mixer(card);
if (error < 0)
return error;
if (snd_opl3_create(card, es1688->port, es1688->port + 2,
OPL3_HW_OPL3, 0, &opl3) < 0)
dev_warn(dev, "opl3 not detected at 0x%lx\n", es1688->port);
else {
error = snd_opl3_hwdep_new(opl3, 0, 2, NULL);
if (error < 0)
return error;
}
if (es1688->mpu_port >= 0x300) {
error = snd_mpu401_uart_new(card, 0, MPU401_HW_ES1688,
es1688->mpu_port, 0, mpu_irq[n], NULL);
if (error < 0)
return error;
}
sprintf(card->longname, "Gravis UltraSound Extreme at 0x%lx, "
"irq %i&%i, dma %i&%i", es1688->port,
gus->gf1.irq, es1688->irq, gus->gf1.dma1, es1688->dma8);
error = snd_card_register(card);
if (error < 0)
return error;
dev_set_drvdata(dev, card);
return 0;
}
#ifdef CONFIG_PM
static int snd_gusextreme_suspend(struct device *dev, unsigned int n,
pm_message_t state)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_gusextreme *gusextreme = card->private_data;
return snd_gus_suspend(gusextreme->gus);
}
static int snd_gusextreme_resume(struct device *dev, unsigned int n)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_gusextreme *gusextreme = card->private_data;
int err;
err = snd_es1688_reset(&gusextreme->es1688);
if (err < 0)
return err;
snd_gusextreme_enable_gf1(gusextreme->gus, &gusextreme->es1688);
usleep_range(100, 200);
return snd_gus_resume(gusextreme->gus);
}
#endif
static struct isa_driver snd_gusextreme_driver = {
.match = snd_gusextreme_match,
.probe = snd_gusextreme_probe,
#ifdef CONFIG_PM
.suspend = snd_gusextreme_suspend,
.resume = snd_gusextreme_resume,
#endif
.driver = {
.name = DEV_NAME
}
};
module_isa_driver(snd_gusextreme_driver, SNDRV_CARDS);
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