git.oblomov.eu Git - linux-2.6/blob - sound/isa/cs423x/cs4231.c

   1 /*
   2  *  Generic driver for CS4231 chips
   3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   4  *  Originally the CS4232/CS4232A driver, modified for use on CS4231 by
   5  *  Tugrul Galatali <galatalt@stuy.edu>
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20  *
  21  */
  22
  23 #include <sound/driver.h>
  24 #include <linux/init.h>
  25 #include <linux/err.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/time.h>
  28 #include <linux/wait.h>
  29 #include <linux/moduleparam.h>
  30 #include <sound/core.h>
  31 #include <sound/cs4231.h>
  32 #include <sound/mpu401.h>
  33 #include <sound/initval.h>
  34
  35 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  36 MODULE_DESCRIPTION("Generic CS4231");
  37 MODULE_LICENSE("GPL");
  38 MODULE_SUPPORTED_DEVICE("{{Crystal Semiconductors,CS4231}}");
  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 long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
  45 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,11,12,15 */
  46 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;    /* 9,11,12,15 */
  47 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
  48 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
  49
  50 module_param_array(index, int, NULL, 0444);
  51 MODULE_PARM_DESC(index, "Index value for CS4231 soundcard.");
  52 module_param_array(id, charp, NULL, 0444);
  53 MODULE_PARM_DESC(id, "ID string for CS4231 soundcard.");
  54 module_param_array(enable, bool, NULL, 0444);
  55 MODULE_PARM_DESC(enable, "Enable CS4231 soundcard.");
  56 module_param_array(port, long, NULL, 0444);
  57 MODULE_PARM_DESC(port, "Port # for CS4231 driver.");
  58 module_param_array(mpu_port, long, NULL, 0444);
  59 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for CS4231 driver.");
  60 module_param_array(irq, int, NULL, 0444);
  61 MODULE_PARM_DESC(irq, "IRQ # for CS4231 driver.");
  62 module_param_array(mpu_irq, int, NULL, 0444);
  63 MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for CS4231 driver.");
  64 module_param_array(dma1, int, NULL, 0444);
  65 MODULE_PARM_DESC(dma1, "DMA1 # for CS4231 driver.");
  66 module_param_array(dma2, int, NULL, 0444);
  67 MODULE_PARM_DESC(dma2, "DMA2 # for CS4231 driver.");
  68
  69 static struct platform_device *devices[SNDRV_CARDS];
  70
  71
  72 static int __init snd_cs4231_probe(struct platform_device *pdev)
  73 {
  74         int dev = pdev->id;
  75         struct snd_card *card;
  76         struct snd_pcm *pcm;
  77         struct snd_cs4231 *chip;
  78         int err;
  79
  80         if (port[dev] == SNDRV_AUTO_PORT) {
  81                 snd_printk(KERN_ERR "specify port\n");
  82                 return -EINVAL;
  83         }
  84         if (irq[dev] == SNDRV_AUTO_IRQ) {
  85                 snd_printk(KERN_ERR "specify irq\n");
  86                 return -EINVAL;
  87         }
  88         if (dma1[dev] == SNDRV_AUTO_DMA) {
  89                 snd_printk(KERN_ERR "specify dma1\n");
  90                 return -EINVAL;
  91         }
  92         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
  93         if (card == NULL)
  94                 return -ENOMEM;
  95         if ((err = snd_cs4231_create(card, port[dev], -1,
  96                                      irq[dev],
  97                                      dma1[dev],
  98                                      dma2[dev],
  99                                      CS4231_HW_DETECT,
 100                                      0, &chip)) < 0)
 101                 goto _err;
 102         card->private_data = chip;
 103
 104         if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0)
 105                 goto _err;
 106
 107         strcpy(card->driver, "CS4231");
 108         strcpy(card->shortname, pcm->name);
 109         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 110                 pcm->name, chip->port, irq[dev], dma1[dev]);
 111         if (dma2[dev] >= 0)
 112                 sprintf(card->longname + strlen(card->longname), "&%d", dma2[dev]);
 113
 114         if ((err = snd_cs4231_mixer(chip)) < 0)
 115                 goto _err;
 116         if ((err = snd_cs4231_timer(chip, 0, NULL)) < 0)
 117                 goto _err;
 118
 119         if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
 120                 if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
 121                         mpu_irq[dev] = -1;
 122                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
 123                                         mpu_port[dev], 0,
 124                                         mpu_irq[dev],
 125                                         mpu_irq[dev] >= 0 ? IRQF_DISABLED : 0,
 126                                         NULL) < 0)
 127                         printk(KERN_WARNING "cs4231: MPU401 not detected\n");
 128         }
 129
 130         snd_card_set_dev(card, &pdev->dev);
 131
 132         if ((err = snd_card_register(card)) < 0)
 133                 goto _err;
 134
 135         platform_set_drvdata(pdev, card);
 136         return 0;
 137
 138  _err:
 139         snd_card_free(card);
 140         return err;
 141 }
 142
 143 static int __devexit snd_cs4231_remove(struct platform_device *devptr)
 144 {
 145         snd_card_free(platform_get_drvdata(devptr));
 146         platform_set_drvdata(devptr, NULL);
 147         return 0;
 148 }
 149
 150 #ifdef CONFIG_PM
 151 static int snd_cs4231_suspend(struct platform_device *dev, pm_message_t state)
 152 {
 153         struct snd_card *card;
 154         struct snd_cs4231 *chip;
 155         card = platform_get_drvdata(dev);
 156         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 157         chip = card->private_data;
 158         chip->suspend(chip);
 159         return 0;
 160 }
 161
 162 static int snd_cs4231_resume(struct platform_device *dev)
 163 {
 164         struct snd_card *card;
 165         struct snd_cs4231 *chip;
 166         card = platform_get_drvdata(dev);
 167         chip = card->private_data;
 168         chip->resume(chip);
 169         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 170         return 0;
 171 }
 172 #endif
 173
 174 #define SND_CS4231_DRIVER       "snd_cs4231"
 175
 176 static struct platform_driver snd_cs4231_driver = {
 177         .probe          = snd_cs4231_probe,
 178         .remove         = __devexit_p(snd_cs4231_remove),
 179 #ifdef CONFIG_PM
 180         .suspend        = snd_cs4231_suspend,
 181         .resume         = snd_cs4231_resume,
 182 #endif
 183         .driver         = {
 184                 .name   = SND_CS4231_DRIVER
 185         },
 186 };
 187
 188 static void __init_or_module snd_cs4231_unregister_all(void)
 189 {
 190         int i;
 191
 192         for (i = 0; i < ARRAY_SIZE(devices); ++i)
 193                 platform_device_unregister(devices[i]);
 194         platform_driver_unregister(&snd_cs4231_driver);
 195 }
 196
 197 static int __init alsa_card_cs4231_init(void)
 198 {
 199         int i, cards, err;
 200
 201         err = platform_driver_register(&snd_cs4231_driver);
 202         if (err < 0)
 203                 return err;
 204
 205         cards = 0;
 206         for (i = 0; i < SNDRV_CARDS; i++) {
 207                 struct platform_device *device;
 208                 if (! enable[i])
 209                         continue;
 210                 device = platform_device_register_simple(SND_CS4231_DRIVER,
 211                                                          i, NULL, 0);
 212                 if (IS_ERR(device))
 213                         continue;
 214                 if (!platform_get_drvdata(device)) {
 215                         platform_device_unregister(device);
 216                         continue;
 217                 }
 218                 devices[i] = device;
 219                 cards++;
 220         }
 221         if (!cards) {
 222 #ifdef MODULE
 223                 printk(KERN_ERR "CS4231 soundcard not found or device busy\n");
 224 #endif
 225                 snd_cs4231_unregister_all();
 226                 return -ENODEV;
 227         }
 228         return 0;
 229 }
 230
 231 static void __exit alsa_card_cs4231_exit(void)
 232 {
 233         snd_cs4231_unregister_all();
 234 }
 235
 236 module_init(alsa_card_cs4231_init)
 237 module_exit(alsa_card_cs4231_exit)