sound/isa/ad1848/ad1848.c

   1 /*
   2  *  Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha)
   3  *  Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>,
   4  *                   Jaroslav Kysela <perex@suse.cz>
   5  *  Based on card-4232.c by Jaroslav Kysela <perex@suse.cz>
   6  *
   7  *
   8  *   This program is free software; you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program; if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  *
  22  */
  23
  24 #include <sound/driver.h>
  25 #include <linux/init.h>
  26 #include <linux/time.h>
  27 #include <linux/wait.h>
  28 #include <linux/moduleparam.h>
  29 #include <sound/core.h>
  30 #include <sound/ad1848.h>
  31 #include <sound/initval.h>
  32
  33 MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@suse.cz>");
  34 MODULE_DESCRIPTION("AD1848/AD1847/CS4248");
  35 MODULE_LICENSE("GPL");
  36 MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
  37                 "{Analog Devices,AD1847},"
  38                 "{Crystal Semiconductors,CS4248}}");
  39
  40 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  41 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  42 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
  43 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* PnP setup */
  44 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,11,12,15 */
  45 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
  46 static int thinkpad[SNDRV_CARDS];                       /* Thinkpad special case */
  47
  48 module_param_array(index, int, NULL, 0444);
  49 MODULE_PARM_DESC(index, "Index value for AD1848 soundcard.");
  50 module_param_array(id, charp, NULL, 0444);
  51 MODULE_PARM_DESC(id, "ID string for AD1848 soundcard.");
  52 module_param_array(enable, bool, NULL, 0444);
  53 MODULE_PARM_DESC(enable, "Enable AD1848 soundcard.");
  54 module_param_array(port, long, NULL, 0444);
  55 MODULE_PARM_DESC(port, "Port # for AD1848 driver.");
  56 module_param_array(irq, int, NULL, 0444);
  57 MODULE_PARM_DESC(irq, "IRQ # for AD1848 driver.");
  58 module_param_array(dma1, int, NULL, 0444);
  59 MODULE_PARM_DESC(dma1, "DMA1 # for AD1848 driver.");
  60 module_param_array(thinkpad, bool, NULL, 0444);
  61 MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
  62
  63 static snd_card_t *snd_ad1848_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
  64
  65
  66 static int __init snd_card_ad1848_probe(int dev)
  67 {
  68         snd_card_t *card;
  69         ad1848_t *chip;
  70         snd_pcm_t *pcm;
  71         int err;
  72
  73         if (port[dev] == SNDRV_AUTO_PORT) {
  74                 snd_printk(KERN_ERR "ad1848: specify port\n");
  75                 return -EINVAL;
  76         }
  77         if (irq[dev] == SNDRV_AUTO_IRQ) {
  78                 snd_printk(KERN_ERR "ad1848: specify irq\n");
  79                 return -EINVAL;
  80         }
  81         if (dma1[dev] == SNDRV_AUTO_DMA) {
  82                 snd_printk(KERN_ERR "ad1848: specify dma1\n");
  83                 return -EINVAL;
  84         }
  85
  86         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
  87         if (card == NULL)
  88                 return -ENOMEM;
  89
  90         if ((err = snd_ad1848_create(card, port[dev],
  91                                      irq[dev],
  92                                      dma1[dev],
  93                                      thinkpad[dev] ? AD1848_HW_THINKPAD : AD1848_HW_DETECT,
  94                                      &chip)) < 0) {
  95                 snd_card_free(card);
  96                 return err;
  97         }
  98
  99         if ((err = snd_ad1848_pcm(chip, 0, &pcm)) < 0) {
 100                 snd_card_free(card);
 101                 return err;
 102         }
 103         if ((err = snd_ad1848_mixer(chip)) < 0) {
 104                 snd_card_free(card);
 105                 return err;
 106         }
 107         strcpy(card->driver, "AD1848");
 108         strcpy(card->shortname, pcm->name);
 109
 110         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 111                 pcm->name, chip->port, irq[dev], dma1[dev]);
 112
 113         if (thinkpad[dev]) {
 114                 strcat(card->longname, " [Thinkpad]");
 115         }
 116
 117         if ((err = snd_card_register(card)) < 0) {
 118                 snd_card_free(card);
 119                 return err;
 120         }
 121         snd_ad1848_cards[dev] = card;
 122         return 0;
 123 }
 124
 125 static int __init alsa_card_ad1848_init(void)
 126 {
 127         int dev, cards;
 128
 129         for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++)
 130                 if (snd_card_ad1848_probe(dev) >= 0)
 131                         cards++;
 132
 133         if (!cards) {
 134 #ifdef MODULE
 135                 printk(KERN_ERR "AD1848 soundcard not found or device busy\n");
 136 #endif
 137                 return -ENODEV;
 138         }
 139         return 0;
 140 }
 141
 142 static void __exit alsa_card_ad1848_exit(void)
 143 {
 144         int idx;
 145
 146         for (idx = 0; idx < SNDRV_CARDS; idx++)
 147                 snd_card_free(snd_ad1848_cards[idx]);
 148 }
 149
 150 module_init(alsa_card_ad1848_init)
 151 module_exit(alsa_card_ad1848_exit)