218 lines
6.2 KiB
C
218 lines
6.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for Gravis UltraSound Classic soundcard
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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/delay.h>
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#include <linux/time.h>
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#include <linux/module.h>
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#include <asm/dma.h>
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#include <sound/core.h>
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#include <sound/gus.h>
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#define SNDRV_LEGACY_FIND_FREE_IRQ
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#define SNDRV_LEGACY_FIND_FREE_DMA
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#include <sound/initval.h>
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#define CRD_NAME "Gravis UltraSound Classic"
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#define DEV_NAME "gusclassic"
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MODULE_DESCRIPTION(CRD_NAME);
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Classic}}");
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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; /* 0x220,0x230,0x240,0x250,0x260 */
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 3,5,9,11,12,15 */
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static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
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static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
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static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
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/* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
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static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
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static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
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module_param_hw_array(port, long, ioport, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
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module_param_hw_array(irq, int, irq, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
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module_param_hw_array(dma1, int, dma, NULL, 0444);
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MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
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module_param_hw_array(dma2, int, dma, NULL, 0444);
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MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
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module_param_array(joystick_dac, int, NULL, 0444);
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MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for " CRD_NAME " driver.");
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module_param_array(channels, int, NULL, 0444);
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MODULE_PARM_DESC(channels, "GF1 channels for " CRD_NAME " driver.");
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module_param_array(pcm_channels, int, NULL, 0444);
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MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for " CRD_NAME " driver.");
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static int snd_gusclassic_match(struct device *dev, unsigned int n)
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{
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return enable[n];
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}
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static int snd_gusclassic_create(struct snd_card *card,
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struct device *dev, unsigned int n,
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struct snd_gus_card **rgus)
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{
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static long possible_ports[] = {0x220, 0x230, 0x240, 0x250, 0x260};
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static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
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static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
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int i, error;
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if (irq[n] == SNDRV_AUTO_IRQ) {
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irq[n] = snd_legacy_find_free_irq(possible_irqs);
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if (irq[n] < 0) {
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dev_err(dev, "unable to find a free IRQ\n");
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return -EBUSY;
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}
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}
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if (dma1[n] == SNDRV_AUTO_DMA) {
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dma1[n] = snd_legacy_find_free_dma(possible_dmas);
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if (dma1[n] < 0) {
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dev_err(dev, "unable to find a free DMA1\n");
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return -EBUSY;
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}
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}
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if (dma2[n] == SNDRV_AUTO_DMA) {
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dma2[n] = snd_legacy_find_free_dma(possible_dmas);
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if (dma2[n] < 0) {
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dev_err(dev, "unable to find a free DMA2\n");
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return -EBUSY;
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}
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}
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if (port[n] != SNDRV_AUTO_PORT)
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return snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
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0, channels[n], pcm_channels[n], 0, rgus);
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i = 0;
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do {
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port[n] = possible_ports[i];
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error = snd_gus_create(card, port[n], irq[n], dma1[n], dma2[n],
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0, channels[n], pcm_channels[n], 0, rgus);
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} while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
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return error;
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}
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static int snd_gusclassic_detect(struct snd_gus_card *gus)
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{
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unsigned char d;
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
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if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
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snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
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return -ENODEV;
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}
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udelay(160);
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */
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udelay(160);
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if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
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snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
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return -ENODEV;
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}
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return 0;
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}
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static int snd_gusclassic_probe(struct device *dev, unsigned int n)
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{
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struct snd_card *card;
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struct snd_gus_card *gus;
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int error;
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error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
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if (error < 0)
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return error;
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if (pcm_channels[n] < 2)
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pcm_channels[n] = 2;
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error = snd_gusclassic_create(card, dev, n, &gus);
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if (error < 0)
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goto out;
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error = snd_gusclassic_detect(gus);
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if (error < 0)
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goto out;
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gus->joystick_dac = joystick_dac[n];
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error = snd_gus_initialize(gus);
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if (error < 0)
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goto out;
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error = -ENODEV;
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if (gus->max_flag || gus->ess_flag) {
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dev_err(dev, "GUS Classic or ACE soundcard was "
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"not detected at 0x%lx\n", gus->gf1.port);
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goto out;
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}
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error = snd_gf1_new_mixer(gus);
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if (error < 0)
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goto out;
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error = snd_gf1_pcm_new(gus, 0, 0);
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if (error < 0)
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goto out;
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if (!gus->ace_flag) {
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error = snd_gf1_rawmidi_new(gus, 0);
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if (error < 0)
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goto out;
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}
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sprintf(card->longname + strlen(card->longname),
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" at 0x%lx, irq %d, dma %d",
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gus->gf1.port, gus->gf1.irq, gus->gf1.dma1);
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if (gus->gf1.dma2 >= 0)
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sprintf(card->longname + strlen(card->longname),
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"&%d", gus->gf1.dma2);
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error = snd_card_register(card);
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if (error < 0)
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goto out;
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dev_set_drvdata(dev, card);
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return 0;
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out: snd_card_free(card);
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return error;
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}
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static int snd_gusclassic_remove(struct device *dev, unsigned int n)
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{
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snd_card_free(dev_get_drvdata(dev));
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return 0;
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}
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static struct isa_driver snd_gusclassic_driver = {
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.match = snd_gusclassic_match,
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.probe = snd_gusclassic_probe,
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.remove = snd_gusclassic_remove,
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#if 0 /* FIXME */
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.suspend = snd_gusclassic_suspend,
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.remove = snd_gusclassic_remove,
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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_gusclassic_driver, SNDRV_CARDS);
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