1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
151 lines
4.5 KiB
C
151 lines
4.5 KiB
C
/*
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* Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha)
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* Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>,
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* Jaroslav Kysela <perex@suse.cz>
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* Based on card-4232.c by Jaroslav Kysela <perex@suse.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/driver.h>
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#include <linux/init.h>
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#include <linux/time.h>
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#include <linux/wait.h>
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#include <linux/moduleparam.h>
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#include <sound/core.h>
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#include <sound/ad1848.h>
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#include <sound/initval.h>
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MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@suse.cz>");
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MODULE_DESCRIPTION("AD1848/AD1847/CS4248");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
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"{Analog Devices,AD1847},"
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"{Crystal Semiconductors,CS4248}}");
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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 int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
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static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */
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static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
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static int thinkpad[SNDRV_CARDS]; /* Thinkpad special case */
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for AD1848 soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for AD1848 soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable AD1848 soundcard.");
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module_param_array(port, long, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for AD1848 driver.");
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module_param_array(irq, int, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for AD1848 driver.");
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module_param_array(dma1, int, NULL, 0444);
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MODULE_PARM_DESC(dma1, "DMA1 # for AD1848 driver.");
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module_param_array(thinkpad, bool, NULL, 0444);
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MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
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static snd_card_t *snd_ad1848_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
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static int __init snd_card_ad1848_probe(int dev)
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{
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snd_card_t *card;
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ad1848_t *chip;
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snd_pcm_t *pcm;
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int err;
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if (port[dev] == SNDRV_AUTO_PORT) {
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snd_printk(KERN_ERR "ad1848: specify port\n");
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return -EINVAL;
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}
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if (irq[dev] == SNDRV_AUTO_IRQ) {
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snd_printk(KERN_ERR "ad1848: specify irq\n");
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return -EINVAL;
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}
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if (dma1[dev] == SNDRV_AUTO_DMA) {
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snd_printk(KERN_ERR "ad1848: specify dma1\n");
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return -EINVAL;
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}
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card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
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if (card == NULL)
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return -ENOMEM;
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if ((err = snd_ad1848_create(card, port[dev],
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irq[dev],
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dma1[dev],
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thinkpad[dev] ? AD1848_HW_THINKPAD : AD1848_HW_DETECT,
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&chip)) < 0) {
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snd_card_free(card);
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return err;
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}
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if ((err = snd_ad1848_pcm(chip, 0, &pcm)) < 0) {
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snd_card_free(card);
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return err;
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}
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if ((err = snd_ad1848_mixer(chip)) < 0) {
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snd_card_free(card);
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return err;
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}
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strcpy(card->driver, "AD1848");
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strcpy(card->shortname, pcm->name);
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sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
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pcm->name, chip->port, irq[dev], dma1[dev]);
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if (thinkpad[dev]) {
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strcat(card->longname, " [Thinkpad]");
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}
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if ((err = snd_card_register(card)) < 0) {
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snd_card_free(card);
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return err;
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}
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snd_ad1848_cards[dev] = card;
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return 0;
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}
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static int __init alsa_card_ad1848_init(void)
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{
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int dev, cards;
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for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++)
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if (snd_card_ad1848_probe(dev) >= 0)
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cards++;
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if (!cards) {
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#ifdef MODULE
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printk(KERN_ERR "AD1848 soundcard not found or device busy\n");
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#endif
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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 void __exit alsa_card_ad1848_exit(void)
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{
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int idx;
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for (idx = 0; idx < SNDRV_CARDS; idx++)
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snd_card_free(snd_ad1848_cards[idx]);
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}
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module_init(alsa_card_ad1848_init)
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module_exit(alsa_card_ad1848_exit)
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