git.oblomov.eu Git - 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 static struct platform_device *devices[SNDRV_CARDS];
  66
  67
  68 static int __init snd_ad1848_probe(struct platform_device *pdev)
  69 {
  70         int dev = pdev->id;
  71         struct snd_card *card;
  72         struct snd_ad1848 *chip;
  73         struct snd_pcm *pcm;
  74         int err;
  75
  76         if (port[dev] == SNDRV_AUTO_PORT) {
  77                 snd_printk(KERN_ERR "ad1848: specify port\n");
  78                 return -EINVAL;
  79         }
  80         if (irq[dev] == SNDRV_AUTO_IRQ) {
  81                 snd_printk(KERN_ERR "ad1848: specify irq\n");
  82                 return -EINVAL;
  83         }
  84         if (dma1[dev] == SNDRV_AUTO_DMA) {
  85                 snd_printk(KERN_ERR "ad1848: specify dma1\n");
  86                 return -EINVAL;
  87         }
  88
  89         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
  90         if (card == NULL)
  91                 return -ENOMEM;
  92
  93         if ((err = snd_ad1848_create(card, port[dev],
  94                                      irq[dev],
  95                                      dma1[dev],
  96                                      thinkpad[dev] ? AD1848_HW_THINKPAD : AD1848_HW_DETECT,
  97                                      &chip)) < 0)
  98                 goto _err;
  99         card->private_data = chip;
 100
 101         if ((err = snd_ad1848_pcm(chip, 0, &pcm)) < 0)
 102                 goto _err;
 103
 104         if ((err = snd_ad1848_mixer(chip)) < 0)
 105                 goto _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         snd_card_set_dev(card, &pdev->dev);
 117
 118         if ((err = snd_card_register(card)) < 0)
 119                 goto _err;
 120
 121         platform_set_drvdata(pdev, card);
 122         return 0;
 123
 124  _err:
 125         snd_card_free(card);
 126         return err;
 127 }
 128
 129 static int __devexit snd_ad1848_remove(struct platform_device *devptr)
 130 {
 131         snd_card_free(platform_get_drvdata(devptr));
 132         platform_set_drvdata(devptr, NULL);
 133         return 0;
 134 }
 135
 136 #ifdef CONFIG_PM
 137 static int snd_ad1848_suspend(struct platform_device *pdev, pm_message_t state)
 138 {
 139         struct snd_card *card = platform_get_drvdata(pdev);
 140         struct snd_ad1848 *chip = card->private_data;
 141
 142         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 143         chip->suspend(chip);
 144         return 0;
 145 }
 146
 147 static int snd_ad1848_resume(struct platform_device *pdev)
 148 {
 149         struct snd_card *card = platform_get_drvdata(pdev);
 150         struct snd_ad1848 *chip = card->private_data;
 151
 152         chip->resume(chip);
 153         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 154         return 0;
 155 }
 156 #endif
 157
 158 #define SND_AD1848_DRIVER       "snd_ad1848"
 159
 160 static struct platform_driver snd_ad1848_driver = {
 161         .probe          = snd_ad1848_probe,
 162         .remove         = __devexit_p(snd_ad1848_remove),
 163 #ifdef CONFIG_PM
 164         .suspend        = snd_ad1848_suspend,
 165         .resume         = snd_ad1848_resume,
 166 #endif
 167         .driver         = {
 168                 .name   = SND_AD1848_DRIVER
 169         },
 170 };
 171
 172 static void __init_or_module snd_ad1848_unregister_all(void)
 173 {
 174         int i;
 175
 176         for (i = 0; i < ARRAY_SIZE(devices); ++i)
 177                 platform_device_unregister(devices[i]);
 178         platform_driver_unregister(&snd_ad1848_driver);
 179 }
 180
 181 static int __init alsa_card_ad1848_init(void)
 182 {
 183         int i, cards, err;
 184
 185         err = platform_driver_register(&snd_ad1848_driver);
 186         if (err < 0)
 187                 return err;
 188
 189         cards = 0;
 190         for (i = 0; i < SNDRV_CARDS; i++) {
 191                 struct platform_device *device;
 192                 if (! enable[i])
 193                         continue;
 194                 device = platform_device_register_simple(SND_AD1848_DRIVER,
 195                                                          i, NULL, 0);
 196                 if (IS_ERR(device))
 197                         continue;
 198                 if (!platform_get_drvdata(device)) {
 199                         platform_device_unregister(device);
 200                         continue;
 201                 }
 202                 devices[i] = device;
 203                 cards++;
 204         }
 205         if (!cards) {
 206 #ifdef MODULE
 207                 printk(KERN_ERR "AD1848 soundcard not found or device busy\n");
 208 #endif
 209                 snd_ad1848_unregister_all();
 210                 return -ENODEV;
 211         }
 212         return 0;
 213 }
 214
 215 static void __exit alsa_card_ad1848_exit(void)
 216 {
 217         snd_ad1848_unregister_all();
 218 }
 219
 220 module_init(alsa_card_ad1848_init)
 221 module_exit(alsa_card_ad1848_exit)