SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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/err.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/time.h>
  29 #include <linux/wait.h>
  30 #include <linux/moduleparam.h>
  31 #include <sound/core.h>
  32 #include <sound/ad1848.h>
  33 #include <sound/initval.h>
  34
  35 MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@suse.cz>");
  36 MODULE_DESCRIPTION("AD1848/AD1847/CS4248");
  37 MODULE_LICENSE("GPL");
  38 MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
  39                 "{Analog Devices,AD1847},"
  40                 "{Crystal Semiconductors,CS4248}}");
  41
  42 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  43 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  44 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
  45 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* PnP setup */
  46 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,11,12,15 */
  47 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
  48 static int thinkpad[SNDRV_CARDS];                       /* Thinkpad special case */
  49
  50 module_param_array(index, int, NULL, 0444);
  51 MODULE_PARM_DESC(index, "Index value for AD1848 soundcard.");
  52 module_param_array(id, charp, NULL, 0444);
  53 MODULE_PARM_DESC(id, "ID string for AD1848 soundcard.");
  54 module_param_array(enable, bool, NULL, 0444);
  55 MODULE_PARM_DESC(enable, "Enable AD1848 soundcard.");
  56 module_param_array(port, long, NULL, 0444);
  57 MODULE_PARM_DESC(port, "Port # for AD1848 driver.");
  58 module_param_array(irq, int, NULL, 0444);
  59 MODULE_PARM_DESC(irq, "IRQ # for AD1848 driver.");
  60 module_param_array(dma1, int, NULL, 0444);
  61 MODULE_PARM_DESC(dma1, "DMA1 # for AD1848 driver.");
  62 module_param_array(thinkpad, bool, NULL, 0444);
  63 MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
  64
  65
  66 static int __init snd_ad1848_probe(struct platform_device *pdev)
  67 {
  68         int dev = pdev->id;
  69         struct snd_card *card;
  70         struct snd_ad1848 *chip;
  71         struct snd_pcm *pcm;
  72         int err;
  73
  74         if (port[dev] == SNDRV_AUTO_PORT) {
  75                 snd_printk(KERN_ERR "ad1848: specify port\n");
  76                 return -EINVAL;
  77         }
  78         if (irq[dev] == SNDRV_AUTO_IRQ) {
  79                 snd_printk(KERN_ERR "ad1848: specify irq\n");
  80                 return -EINVAL;
  81         }
  82         if (dma1[dev] == SNDRV_AUTO_DMA) {
  83                 snd_printk(KERN_ERR "ad1848: specify dma1\n");
  84                 return -EINVAL;
  85         }
  86
  87         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
  88         if (card == NULL)
  89                 return -ENOMEM;
  90
  91         if ((err = snd_ad1848_create(card, port[dev],
  92                                      irq[dev],
  93                                      dma1[dev],
  94                                      thinkpad[dev] ? AD1848_HW_THINKPAD : AD1848_HW_DETECT,
  95                                      &chip)) < 0)
  96                 goto _err;
  97         card->private_data = chip;
  98
  99         if ((err = snd_ad1848_pcm(chip, 0, &pcm)) < 0)
 100                 goto _err;
 101
 102         if ((err = snd_ad1848_mixer(chip)) < 0)
 103                 goto _err;
 104
 105         strcpy(card->driver, "AD1848");
 106         strcpy(card->shortname, pcm->name);
 107
 108         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 109                 pcm->name, chip->port, irq[dev], dma1[dev]);
 110
 111         if (thinkpad[dev])
 112                 strcat(card->longname, " [Thinkpad]");
 113
 114         snd_card_set_dev(card, &pdev->dev);
 115
 116         if ((err = snd_card_register(card)) < 0)
 117                 goto _err;
 118
 119         platform_set_drvdata(pdev, card);
 120         return 0;
 121
 122  _err:
 123         snd_card_free(card);
 124         return err;
 125 }
 126
 127 static int __devexit snd_ad1848_remove(struct platform_device *devptr)
 128 {
 129         snd_card_free(platform_get_drvdata(devptr));
 130         platform_set_drvdata(devptr, NULL);
 131         return 0;
 132 }
 133
 134 #ifdef CONFIG_PM
 135 static int snd_ad1848_suspend(struct platform_device *pdev, pm_message_t state)
 136 {
 137         struct snd_card *card = platform_get_drvdata(pdev);
 138         struct snd_ad1848 *chip = card->private_data;
 139
 140         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 141         chip->suspend(chip);
 142         return 0;
 143 }
 144
 145 static int snd_ad1848_resume(struct platform_device *pdev)
 146 {
 147         struct snd_card *card = platform_get_drvdata(pdev);
 148         struct snd_ad1848 *chip = card->private_data;
 149
 150         chip->resume(chip);
 151         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 152         return 0;
 153 }
 154 #endif
 155
 156 #define SND_AD1848_DRIVER       "snd_ad1848"
 157
 158 static struct platform_driver snd_ad1848_driver = {
 159         .probe          = snd_ad1848_probe,
 160         .remove         = __devexit_p(snd_ad1848_remove),
 161 #ifdef CONFIG_PM
 162         .suspend        = snd_ad1848_suspend,
 163         .resume         = snd_ad1848_resume,
 164 #endif
 165         .driver         = {
 166                 .name   = SND_AD1848_DRIVER
 167         },
 168 };
 169
 170 static int __init alsa_card_ad1848_init(void)
 171 {
 172         int i, cards, err;
 173
 174         err = platform_driver_register(&snd_ad1848_driver);
 175         if (err < 0)
 176                 return err;
 177
 178         cards = 0;
 179         for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
 180                 struct platform_device *device;
 181                 device = platform_device_register_simple(SND_AD1848_DRIVER,
 182                                                          i, NULL, 0);
 183                 if (IS_ERR(device)) {
 184                         err = PTR_ERR(device);
 185                         goto errout;
 186                 }
 187                 cards++;
 188         }
 189         if (!cards) {
 190 #ifdef MODULE
 191                 printk(KERN_ERR "AD1848 soundcard not found or device busy\n");
 192 #endif
 193                 err = -ENODEV;
 194                 goto errout;
 195         }
 196         return 0;
 197
 198  errout:
 199         platform_driver_unregister(&snd_ad1848_driver);
 200         return err;
 201 }
 202
 203 static void __exit alsa_card_ad1848_exit(void)
 204 {
 205         platform_driver_unregister(&snd_ad1848_driver);
 206 }
 207
 208 module_init(alsa_card_ad1848_init)
 209 module_exit(alsa_card_ad1848_exit)