11a59d1b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
21da177e4SLinus Torvalds /*
3c1017a4cSJaroslav Kysela * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
41da177e4SLinus Torvalds * Uros Bizjak <uros@kss-loka.si>
51da177e4SLinus Torvalds *
61da177e4SLinus Torvalds * Lowlevel routines for control of Sound Blaster cards
71da177e4SLinus Torvalds */
81da177e4SLinus Torvalds
91da177e4SLinus Torvalds #include <linux/delay.h>
101da177e4SLinus Torvalds #include <linux/init.h>
111da177e4SLinus Torvalds #include <linux/interrupt.h>
121da177e4SLinus Torvalds #include <linux/slab.h>
131da177e4SLinus Torvalds #include <linux/ioport.h>
14da155d5bSPaul Gortmaker #include <linux/module.h>
156cbbfe1cSTakashi Iwai #include <linux/io.h>
161da177e4SLinus Torvalds #include <sound/core.h>
171da177e4SLinus Torvalds #include <sound/sb.h>
181da177e4SLinus Torvalds #include <sound/initval.h>
191da177e4SLinus Torvalds
201da177e4SLinus Torvalds #include <asm/dma.h>
211da177e4SLinus Torvalds
22c1017a4cSJaroslav Kysela MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
231da177e4SLinus Torvalds MODULE_DESCRIPTION("ALSA lowlevel driver for Sound Blaster cards");
241da177e4SLinus Torvalds MODULE_LICENSE("GPL");
251da177e4SLinus Torvalds
261da177e4SLinus Torvalds #define BUSY_LOOPS 100000
271da177e4SLinus Torvalds
281da177e4SLinus Torvalds #undef IO_DEBUG
291da177e4SLinus Torvalds
snd_sbdsp_command(struct snd_sb * chip,unsigned char val)30029d64b0STakashi Iwai int snd_sbdsp_command(struct snd_sb *chip, unsigned char val)
311da177e4SLinus Torvalds {
321da177e4SLinus Torvalds int i;
331da177e4SLinus Torvalds #ifdef IO_DEBUG
3499b359baSTakashi Iwai snd_printk(KERN_DEBUG "command 0x%x\n", val);
351da177e4SLinus Torvalds #endif
361da177e4SLinus Torvalds for (i = BUSY_LOOPS; i; i--)
371da177e4SLinus Torvalds if ((inb(SBP(chip, STATUS)) & 0x80) == 0) {
381da177e4SLinus Torvalds outb(val, SBP(chip, COMMAND));
391da177e4SLinus Torvalds return 1;
401da177e4SLinus Torvalds }
419bf8e7ddSHarvey Harrison snd_printd("%s [0x%lx]: timeout (0x%x)\n", __func__, chip->port, val);
421da177e4SLinus Torvalds return 0;
431da177e4SLinus Torvalds }
441da177e4SLinus Torvalds
snd_sbdsp_get_byte(struct snd_sb * chip)45029d64b0STakashi Iwai int snd_sbdsp_get_byte(struct snd_sb *chip)
461da177e4SLinus Torvalds {
471da177e4SLinus Torvalds int val;
481da177e4SLinus Torvalds int i;
491da177e4SLinus Torvalds for (i = BUSY_LOOPS; i; i--) {
501da177e4SLinus Torvalds if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
511da177e4SLinus Torvalds val = inb(SBP(chip, READ));
521da177e4SLinus Torvalds #ifdef IO_DEBUG
5399b359baSTakashi Iwai snd_printk(KERN_DEBUG "get_byte 0x%x\n", val);
541da177e4SLinus Torvalds #endif
551da177e4SLinus Torvalds return val;
561da177e4SLinus Torvalds }
571da177e4SLinus Torvalds }
589bf8e7ddSHarvey Harrison snd_printd("%s [0x%lx]: timeout\n", __func__, chip->port);
591da177e4SLinus Torvalds return -ENODEV;
601da177e4SLinus Torvalds }
611da177e4SLinus Torvalds
snd_sbdsp_reset(struct snd_sb * chip)62029d64b0STakashi Iwai int snd_sbdsp_reset(struct snd_sb *chip)
631da177e4SLinus Torvalds {
641da177e4SLinus Torvalds int i;
651da177e4SLinus Torvalds
661da177e4SLinus Torvalds outb(1, SBP(chip, RESET));
671da177e4SLinus Torvalds udelay(10);
681da177e4SLinus Torvalds outb(0, SBP(chip, RESET));
691da177e4SLinus Torvalds udelay(30);
701da177e4SLinus Torvalds for (i = BUSY_LOOPS; i; i--)
711da177e4SLinus Torvalds if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
721da177e4SLinus Torvalds if (inb(SBP(chip, READ)) == 0xaa)
731da177e4SLinus Torvalds return 0;
741da177e4SLinus Torvalds else
751da177e4SLinus Torvalds break;
761da177e4SLinus Torvalds }
779bf8e7ddSHarvey Harrison snd_printdd("%s [0x%lx] failed...\n", __func__, chip->port);
781da177e4SLinus Torvalds return -ENODEV;
791da177e4SLinus Torvalds }
801da177e4SLinus Torvalds
snd_sbdsp_version(struct snd_sb * chip)81029d64b0STakashi Iwai static int snd_sbdsp_version(struct snd_sb * chip)
821da177e4SLinus Torvalds {
83d7da4293SColin Ian King unsigned int result;
841da177e4SLinus Torvalds
851da177e4SLinus Torvalds snd_sbdsp_command(chip, SB_DSP_GET_VERSION);
861da177e4SLinus Torvalds result = (short) snd_sbdsp_get_byte(chip) << 8;
871da177e4SLinus Torvalds result |= (short) snd_sbdsp_get_byte(chip);
881da177e4SLinus Torvalds return result;
891da177e4SLinus Torvalds }
901da177e4SLinus Torvalds
snd_sbdsp_probe(struct snd_sb * chip)91029d64b0STakashi Iwai static int snd_sbdsp_probe(struct snd_sb * chip)
921da177e4SLinus Torvalds {
931da177e4SLinus Torvalds int version;
941da177e4SLinus Torvalds int major, minor;
951da177e4SLinus Torvalds char *str;
961da177e4SLinus Torvalds unsigned long flags;
971da177e4SLinus Torvalds
981da177e4SLinus Torvalds /*
991da177e4SLinus Torvalds * initialization sequence
1001da177e4SLinus Torvalds */
1011da177e4SLinus Torvalds
1021da177e4SLinus Torvalds spin_lock_irqsave(&chip->reg_lock, flags);
1031da177e4SLinus Torvalds if (snd_sbdsp_reset(chip) < 0) {
1041da177e4SLinus Torvalds spin_unlock_irqrestore(&chip->reg_lock, flags);
1051da177e4SLinus Torvalds return -ENODEV;
1061da177e4SLinus Torvalds }
1071da177e4SLinus Torvalds version = snd_sbdsp_version(chip);
1081da177e4SLinus Torvalds if (version < 0) {
1091da177e4SLinus Torvalds spin_unlock_irqrestore(&chip->reg_lock, flags);
1101da177e4SLinus Torvalds return -ENODEV;
1111da177e4SLinus Torvalds }
1121da177e4SLinus Torvalds spin_unlock_irqrestore(&chip->reg_lock, flags);
1131da177e4SLinus Torvalds major = version >> 8;
1141da177e4SLinus Torvalds minor = version & 0xff;
1151da177e4SLinus Torvalds snd_printdd("SB [0x%lx]: DSP chip found, version = %i.%i\n",
1161da177e4SLinus Torvalds chip->port, major, minor);
1171da177e4SLinus Torvalds
1181da177e4SLinus Torvalds switch (chip->hardware) {
1191da177e4SLinus Torvalds case SB_HW_AUTO:
1201da177e4SLinus Torvalds switch (major) {
1211da177e4SLinus Torvalds case 1:
1221da177e4SLinus Torvalds chip->hardware = SB_HW_10;
1231da177e4SLinus Torvalds str = "1.0";
1241da177e4SLinus Torvalds break;
1251da177e4SLinus Torvalds case 2:
1261da177e4SLinus Torvalds if (minor) {
1271da177e4SLinus Torvalds chip->hardware = SB_HW_201;
1281da177e4SLinus Torvalds str = "2.01+";
1291da177e4SLinus Torvalds } else {
1301da177e4SLinus Torvalds chip->hardware = SB_HW_20;
1311da177e4SLinus Torvalds str = "2.0";
1321da177e4SLinus Torvalds }
1331da177e4SLinus Torvalds break;
1341da177e4SLinus Torvalds case 3:
1351da177e4SLinus Torvalds chip->hardware = SB_HW_PRO;
1361da177e4SLinus Torvalds str = "Pro";
1371da177e4SLinus Torvalds break;
1381da177e4SLinus Torvalds case 4:
1391da177e4SLinus Torvalds chip->hardware = SB_HW_16;
1401da177e4SLinus Torvalds str = "16";
1411da177e4SLinus Torvalds break;
1421da177e4SLinus Torvalds default:
14399b359baSTakashi Iwai snd_printk(KERN_INFO "SB [0x%lx]: unknown DSP chip version %i.%i\n",
1441da177e4SLinus Torvalds chip->port, major, minor);
1451da177e4SLinus Torvalds return -ENODEV;
1461da177e4SLinus Torvalds }
1471da177e4SLinus Torvalds break;
1481da177e4SLinus Torvalds case SB_HW_ALS100:
1491da177e4SLinus Torvalds str = "16 (ALS-100)";
1501da177e4SLinus Torvalds break;
1511da177e4SLinus Torvalds case SB_HW_ALS4000:
1521da177e4SLinus Torvalds str = "16 (ALS-4000)";
1531da177e4SLinus Torvalds break;
1541da177e4SLinus Torvalds case SB_HW_DT019X:
1551da177e4SLinus Torvalds str = "(DT019X/ALS007)";
156621887aeSTakashi Iwai break;
157621887aeSTakashi Iwai case SB_HW_CS5530:
158621887aeSTakashi Iwai str = "16 (CS5530)";
1591da177e4SLinus Torvalds break;
160ad8decb7SKrzysztof Helt case SB_HW_JAZZ16:
161ad8decb7SKrzysztof Helt str = "Pro (Jazz16)";
162ad8decb7SKrzysztof Helt break;
1631da177e4SLinus Torvalds default:
1641da177e4SLinus Torvalds return -ENODEV;
1651da177e4SLinus Torvalds }
1661da177e4SLinus Torvalds sprintf(chip->name, "Sound Blaster %s", str);
1671da177e4SLinus Torvalds chip->version = (major << 8) | minor;
1681da177e4SLinus Torvalds return 0;
1691da177e4SLinus Torvalds }
1701da177e4SLinus Torvalds
snd_sbdsp_create(struct snd_card * card,unsigned long port,int irq,irq_handler_t irq_handler,int dma8,int dma16,unsigned short hardware,struct snd_sb ** r_chip)171029d64b0STakashi Iwai int snd_sbdsp_create(struct snd_card *card,
1721da177e4SLinus Torvalds unsigned long port,
1731da177e4SLinus Torvalds int irq,
1747d12e780SDavid Howells irq_handler_t irq_handler,
1751da177e4SLinus Torvalds int dma8,
1761da177e4SLinus Torvalds int dma16,
1771da177e4SLinus Torvalds unsigned short hardware,
178029d64b0STakashi Iwai struct snd_sb **r_chip)
1791da177e4SLinus Torvalds {
180029d64b0STakashi Iwai struct snd_sb *chip;
1811da177e4SLinus Torvalds int err;
1821da177e4SLinus Torvalds
183622207dcSTakashi Iwai if (snd_BUG_ON(!r_chip))
184622207dcSTakashi Iwai return -EINVAL;
1851da177e4SLinus Torvalds *r_chip = NULL;
186*5eab6cb0STakashi Iwai chip = devm_kzalloc(card->dev, sizeof(*chip), GFP_KERNEL);
187*5eab6cb0STakashi Iwai if (!chip)
1881da177e4SLinus Torvalds return -ENOMEM;
1891da177e4SLinus Torvalds spin_lock_init(&chip->reg_lock);
1901da177e4SLinus Torvalds spin_lock_init(&chip->open_lock);
1911da177e4SLinus Torvalds spin_lock_init(&chip->midi_input_lock);
1921da177e4SLinus Torvalds spin_lock_init(&chip->mixer_lock);
1931da177e4SLinus Torvalds chip->irq = -1;
1941da177e4SLinus Torvalds chip->dma8 = -1;
1951da177e4SLinus Torvalds chip->dma16 = -1;
1961da177e4SLinus Torvalds chip->port = port;
1971da177e4SLinus Torvalds
198*5eab6cb0STakashi Iwai if (devm_request_irq(card->dev, irq, irq_handler,
1992d4a485bSTakashi Iwai (hardware == SB_HW_ALS4000 ||
2002d4a485bSTakashi Iwai hardware == SB_HW_CS5530) ?
20188e24c3aSYong Zhang IRQF_SHARED : 0,
2021da177e4SLinus Torvalds "SoundBlaster", (void *) chip)) {
2031da177e4SLinus Torvalds snd_printk(KERN_ERR "sb: can't grab irq %d\n", irq);
2041da177e4SLinus Torvalds return -EBUSY;
2051da177e4SLinus Torvalds }
2061da177e4SLinus Torvalds chip->irq = irq;
207f9236dd0STakashi Iwai card->sync_irq = chip->irq;
2081da177e4SLinus Torvalds
2091da177e4SLinus Torvalds if (hardware == SB_HW_ALS4000)
2101da177e4SLinus Torvalds goto __skip_allocation;
2111da177e4SLinus Torvalds
212*5eab6cb0STakashi Iwai chip->res_port = devm_request_region(card->dev, port, 16,
213*5eab6cb0STakashi Iwai "SoundBlaster");
21410dc8ad5STakashi Iwai if (!chip->res_port) {
2151da177e4SLinus Torvalds snd_printk(KERN_ERR "sb: can't grab port 0x%lx\n", port);
2161da177e4SLinus Torvalds return -EBUSY;
2171da177e4SLinus Torvalds }
2181da177e4SLinus Torvalds
2191da177e4SLinus Torvalds #ifdef CONFIG_ISA
220*5eab6cb0STakashi Iwai if (dma8 >= 0 && snd_devm_request_dma(card->dev, dma8,
221*5eab6cb0STakashi Iwai "SoundBlaster - 8bit")) {
2221da177e4SLinus Torvalds snd_printk(KERN_ERR "sb: can't grab DMA8 %d\n", dma8);
2231da177e4SLinus Torvalds return -EBUSY;
2241da177e4SLinus Torvalds }
2251da177e4SLinus Torvalds chip->dma8 = dma8;
2261da177e4SLinus Torvalds if (dma16 >= 0) {
2271da177e4SLinus Torvalds if (hardware != SB_HW_ALS100 && (dma16 < 5 || dma16 > 7)) {
2281da177e4SLinus Torvalds /* no duplex */
2291da177e4SLinus Torvalds dma16 = -1;
230*5eab6cb0STakashi Iwai } else if (snd_devm_request_dma(card->dev, dma16,
231*5eab6cb0STakashi Iwai "SoundBlaster - 16bit")) {
2321da177e4SLinus Torvalds snd_printk(KERN_ERR "sb: can't grab DMA16 %d\n", dma16);
2331da177e4SLinus Torvalds return -EBUSY;
2341da177e4SLinus Torvalds }
2351da177e4SLinus Torvalds }
2361da177e4SLinus Torvalds chip->dma16 = dma16;
2371da177e4SLinus Torvalds #endif
2381da177e4SLinus Torvalds
2391da177e4SLinus Torvalds __skip_allocation:
2401da177e4SLinus Torvalds chip->card = card;
2411da177e4SLinus Torvalds chip->hardware = hardware;
24210dc8ad5STakashi Iwai err = snd_sbdsp_probe(chip);
243*5eab6cb0STakashi Iwai if (err < 0)
2441da177e4SLinus Torvalds return err;
2451da177e4SLinus Torvalds *r_chip = chip;
2461da177e4SLinus Torvalds return 0;
2471da177e4SLinus Torvalds }
2481da177e4SLinus Torvalds
2491da177e4SLinus Torvalds EXPORT_SYMBOL(snd_sbdsp_command);
2501da177e4SLinus Torvalds EXPORT_SYMBOL(snd_sbdsp_get_byte);
2511da177e4SLinus Torvalds EXPORT_SYMBOL(snd_sbdsp_reset);
2521da177e4SLinus Torvalds EXPORT_SYMBOL(snd_sbdsp_create);
2531da177e4SLinus Torvalds /* sb_mixer.c */
2541da177e4SLinus Torvalds EXPORT_SYMBOL(snd_sbmixer_write);
2551da177e4SLinus Torvalds EXPORT_SYMBOL(snd_sbmixer_read);
2561da177e4SLinus Torvalds EXPORT_SYMBOL(snd_sbmixer_new);
2571da177e4SLinus Torvalds EXPORT_SYMBOL(snd_sbmixer_add_ctl);
2585bdb6a16STakashi Iwai #ifdef CONFIG_PM
2595bdb6a16STakashi Iwai EXPORT_SYMBOL(snd_sbmixer_suspend);
2605bdb6a16STakashi Iwai EXPORT_SYMBOL(snd_sbmixer_resume);
2615bdb6a16STakashi Iwai #endif
262