release/src-rt-6.x.4708/linux/linux-2.6.36/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@perex.cz>
   5  *  Based on card-4232.c by Jaroslav Kysela <perex@perex.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 <linux/init.h>
  25 #include <linux/err.h>
  26 #include <linux/isa.h>
  27 #include <linux/time.h>
  28 #include <linux/wait.h>
  29 #include <linux/moduleparam.h>
  30 #include <sound/core.h>
  31 #include <sound/wss.h>
  32 #include <sound/initval.h>
  33
  34 #define CRD_NAME "Generic AD1848/AD1847/CS4248"
  35 #define DEV_NAME "ad1848"
  36
  37 MODULE_DESCRIPTION(CRD_NAME);
  38 MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>");
  39 MODULE_LICENSE("GPL");
  40 MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
  41                 "{Analog Devices,AD1847},"
  42                 "{Crystal Semiconductors,CS4248}}");
  43
  44 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  45 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  46 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
  47 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* PnP setup */
  48 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,11,12,15 */
  49 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
  50 static int thinkpad[SNDRV_CARDS];                       /* Thinkpad special case */
  51
  52 module_param_array(index, int, NULL, 0444);
  53 MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
  54 module_param_array(id, charp, NULL, 0444);
  55 MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
  56 module_param_array(enable, bool, NULL, 0444);
  57 MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
  58 module_param_array(port, long, NULL, 0444);
  59 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
  60 module_param_array(irq, int, NULL, 0444);
  61 MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
  62 module_param_array(dma1, int, NULL, 0444);
  63 MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
  64 module_param_array(thinkpad, bool, NULL, 0444);
  65 MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
  66
  67 static int __devinit snd_ad1848_match(struct device *dev, unsigned int n)
  68 {
  69         if (!enable[n])
  70                 return 0;
  71
  72         if (port[n] == SNDRV_AUTO_PORT) {
  73                 dev_err(dev, "please specify port\n");
  74                 return 0;
  75         }
  76         if (irq[n] == SNDRV_AUTO_IRQ) {
  77                 dev_err(dev, "please specify irq\n");
  78                 return 0;
  79         }
  80         if (dma1[n] == SNDRV_AUTO_DMA) {
  81                 dev_err(dev, "please specify dma1\n");
  82                 return 0;
  83         }
  84         return 1;
  85 }
  86
  87 static int __devinit snd_ad1848_probe(struct device *dev, unsigned int n)
  88 {
  89         struct snd_card *card;
  90         struct snd_wss *chip;
  91         struct snd_pcm *pcm;
  92         int error;
  93
  94         error = snd_card_create(index[n], id[n], THIS_MODULE, 0, &card);
  95         if (error < 0)
  96                 return error;
  97
  98         error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1,
  99                         thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT,
 100                         0, &chip);
 101         if (error < 0)
 102                 goto out;
 103
 104         card->private_data = chip;
 105
 106         error = snd_wss_pcm(chip, 0, &pcm);
 107         if (error < 0)
 108                 goto out;
 109
 110         error = snd_wss_mixer(chip);
 111         if (error < 0)
 112                 goto out;
 113
 114         strcpy(card->driver, "AD1848");
 115         strcpy(card->shortname, pcm->name);
 116
 117         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 118                 pcm->name, chip->port, irq[n], dma1[n]);
 119         if (thinkpad[n])
 120                 strcat(card->longname, " [Thinkpad]");
 121
 122         snd_card_set_dev(card, dev);
 123
 124         error = snd_card_register(card);
 125         if (error < 0)
 126                 goto out;
 127
 128         dev_set_drvdata(dev, card);
 129         return 0;
 130
 131 out:    snd_card_free(card);
 132         return error;
 133 }
 134
 135 static int __devexit snd_ad1848_remove(struct device *dev, unsigned int n)
 136 {
 137         snd_card_free(dev_get_drvdata(dev));
 138         dev_set_drvdata(dev, NULL);
 139         return 0;
 140 }
 141
 142 #ifdef CONFIG_PM
 143 static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state)
 144 {
 145         struct snd_card *card = dev_get_drvdata(dev);
 146         struct snd_wss *chip = card->private_data;
 147
 148         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 149         chip->suspend(chip);
 150         return 0;
 151 }
 152
 153 static int snd_ad1848_resume(struct device *dev, unsigned int n)
 154 {
 155         struct snd_card *card = dev_get_drvdata(dev);
 156         struct snd_wss *chip = card->private_data;
 157
 158         chip->resume(chip);
 159         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 160         return 0;
 161 }
 162 #endif
 163
 164 static struct isa_driver snd_ad1848_driver = {
 165         .match          = snd_ad1848_match,
 166         .probe          = snd_ad1848_probe,
 167         .remove         = __devexit_p(snd_ad1848_remove),
 168 #ifdef CONFIG_PM
 169         .suspend        = snd_ad1848_suspend,
 170         .resume         = snd_ad1848_resume,
 171 #endif
 172         .driver         = {
 173                 .name   = DEV_NAME
 174         }
 175 };
 176
 177 static int __init alsa_card_ad1848_init(void)
 178 {
 179         return isa_register_driver(&snd_ad1848_driver, SNDRV_CARDS);
 180 }
 181
 182 static void __exit alsa_card_ad1848_exit(void)
 183 {
 184         isa_unregister_driver(&snd_ad1848_driver);
 185 }
 186
 187 module_init(alsa_card_ad1848_init);
 188 module_exit(alsa_card_ad1848_exit);