221 lines
5.7 KiB
C
221 lines
5.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*/
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/isa.h>
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#include <linux/ioport.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/sb.h>
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#include <sound/opl3.h>
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#include <sound/initval.h>
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
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MODULE_LICENSE("GPL");
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
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static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240,0x260 */
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
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static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3 */
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
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module_param_hw_array(port, long, ioport, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for SB8 driver.");
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module_param_hw_array(irq, int, irq, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
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module_param_hw_array(dma8, int, dma, NULL, 0444);
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MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
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struct snd_sb8 {
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struct resource *fm_res; /* used to block FM i/o region for legacy cards */
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struct snd_sb *chip;
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};
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static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id)
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{
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struct snd_sb *chip = dev_id;
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if (chip->open & SB_OPEN_PCM) {
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return snd_sb8dsp_interrupt(chip);
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} else {
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return snd_sb8dsp_midi_interrupt(chip);
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}
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}
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static int snd_sb8_match(struct device *pdev, unsigned int dev)
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{
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if (!enable[dev])
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return 0;
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if (irq[dev] == SNDRV_AUTO_IRQ) {
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dev_err(pdev, "please specify irq\n");
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return 0;
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}
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if (dma8[dev] == SNDRV_AUTO_DMA) {
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dev_err(pdev, "please specify dma8\n");
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return 0;
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}
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return 1;
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}
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static int snd_sb8_probe(struct device *pdev, unsigned int dev)
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{
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struct snd_sb *chip;
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struct snd_card *card;
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struct snd_sb8 *acard;
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struct snd_opl3 *opl3;
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int err;
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err = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE,
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sizeof(struct snd_sb8), &card);
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if (err < 0)
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return err;
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acard = card->private_data;
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/*
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* Block the 0x388 port to avoid PnP conflicts.
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* No need to check this value after request_region,
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* as we never do anything with it.
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*/
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acard->fm_res = devm_request_region(card->dev, 0x388, 4,
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"SoundBlaster FM");
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if (port[dev] != SNDRV_AUTO_PORT) {
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err = snd_sbdsp_create(card, port[dev], irq[dev],
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snd_sb8_interrupt, dma8[dev],
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-1, SB_HW_AUTO, &chip);
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if (err < 0)
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return err;
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} else {
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/* auto-probe legacy ports */
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static const unsigned long possible_ports[] = {
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0x220, 0x240, 0x260,
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};
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int i;
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for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
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err = snd_sbdsp_create(card, possible_ports[i],
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irq[dev],
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snd_sb8_interrupt,
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dma8[dev],
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-1,
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SB_HW_AUTO,
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&chip);
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if (err >= 0) {
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port[dev] = possible_ports[i];
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break;
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}
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}
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if (i >= ARRAY_SIZE(possible_ports))
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return -EINVAL;
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}
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acard->chip = chip;
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if (chip->hardware >= SB_HW_16) {
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if (chip->hardware == SB_HW_ALS100)
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snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
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port[dev]);
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else
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snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
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port[dev]);
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return -ENODEV;
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}
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err = snd_sb8dsp_pcm(chip, 0);
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if (err < 0)
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return err;
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err = snd_sbmixer_new(chip);
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if (err < 0)
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return err;
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if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
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err = snd_opl3_create(card, chip->port + 8, 0,
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OPL3_HW_AUTO, 1, &opl3);
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if (err < 0)
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snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8);
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} else {
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err = snd_opl3_create(card, chip->port, chip->port + 2,
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OPL3_HW_AUTO, 1, &opl3);
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if (err < 0) {
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snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n",
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chip->port, chip->port + 2);
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}
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}
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if (err >= 0) {
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err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
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if (err < 0)
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return err;
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}
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err = snd_sb8dsp_midi(chip, 0);
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if (err < 0)
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return err;
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strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
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strcpy(card->shortname, chip->name);
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sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
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chip->name,
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chip->port,
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irq[dev], dma8[dev]);
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err = snd_card_register(card);
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if (err < 0)
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return err;
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dev_set_drvdata(pdev, card);
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return 0;
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}
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#ifdef CONFIG_PM
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static int snd_sb8_suspend(struct device *dev, unsigned int n,
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pm_message_t state)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct snd_sb8 *acard = card->private_data;
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struct snd_sb *chip = acard->chip;
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snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
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snd_sbmixer_suspend(chip);
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return 0;
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}
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static int snd_sb8_resume(struct device *dev, unsigned int n)
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{
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struct snd_card *card = dev_get_drvdata(dev);
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struct snd_sb8 *acard = card->private_data;
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struct snd_sb *chip = acard->chip;
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snd_sbdsp_reset(chip);
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snd_sbmixer_resume(chip);
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snd_power_change_state(card, SNDRV_CTL_POWER_D0);
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return 0;
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}
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#endif
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#define DEV_NAME "sb8"
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static struct isa_driver snd_sb8_driver = {
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.match = snd_sb8_match,
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.probe = snd_sb8_probe,
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#ifdef CONFIG_PM
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.suspend = snd_sb8_suspend,
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.resume = snd_sb8_resume,
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#endif
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.driver = {
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.name = DEV_NAME
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},
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};
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module_isa_driver(snd_sb8_driver, SNDRV_CARDS);
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