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   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
  70 static int __init snd_cs4231_probe(struct platform_device *pdev)
  71 {
  72         int dev = pdev->id;
  73         struct snd_card *card;
  74         struct snd_pcm *pcm;
  75         struct snd_cs4231 *chip;
  76         int err;
  77
  78         if (port[dev] == SNDRV_AUTO_PORT) {
  79                 snd_printk(KERN_ERR "specify port\n");
  80                 return -EINVAL;
  81         }
  82         if (irq[dev] == SNDRV_AUTO_IRQ) {
  83                 snd_printk(KERN_ERR "specify irq\n");
  84                 return -EINVAL;
  85         }
  86         if (dma1[dev] == SNDRV_AUTO_DMA) {
  87                 snd_printk(KERN_ERR "specify dma1\n");
  88                 return -EINVAL;
  89         }
  90         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
  91         if (card == NULL)
  92                 return -ENOMEM;
  93         if ((err = snd_cs4231_create(card, port[dev], -1,
  94                                      irq[dev],
  95                                      dma1[dev],
  96                                      dma2[dev],
  97                                      CS4231_HW_DETECT,
  98                                      0, &chip)) < 0)
  99                 goto _err;
 100         card->private_data = chip;
 101
 102         if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0)
 103                 goto _err;
 104
 105         strcpy(card->driver, "CS4231");
 106         strcpy(card->shortname, pcm->name);
 107         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 108                 pcm->name, chip->port, irq[dev], dma1[dev]);
 109         if (dma2[dev] >= 0)
 110                 sprintf(card->longname + strlen(card->longname), "&%d", dma2[dev]);
 111
 112         if ((err = snd_cs4231_mixer(chip)) < 0)
 113                 goto _err;
 114         if ((err = snd_cs4231_timer(chip, 0, NULL)) < 0)
 115                 goto _err;
 116
 117         if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
 118                 if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
 119                         mpu_irq[dev] = -1;
 120                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
 121                                         mpu_port[dev], 0,
 122                                         mpu_irq[dev],
 123                                         mpu_irq[dev] >= 0 ? SA_INTERRUPT : 0,
 124                                         NULL) < 0)
 125                         printk(KERN_WARNING "cs4231: MPU401 not detected\n");
 126         }
 127
 128         snd_card_set_dev(card, &pdev->dev);
 129
 130         if ((err = snd_card_register(card)) < 0)
 131                 goto _err;
 132
 133         platform_set_drvdata(pdev, card);
 134         return 0;
 135
 136  _err:
 137         snd_card_free(card);
 138         return err;
 139 }
 140
 141 static int __devexit snd_cs4231_remove(struct platform_device *devptr)
 142 {
 143         snd_card_free(platform_get_drvdata(devptr));
 144         platform_set_drvdata(devptr, NULL);
 145         return 0;
 146 }
 147
 148 #ifdef CONFIG_PM
 149 static int snd_cs4231_suspend(struct platform_device *dev, pm_message_t state)
 150 {
 151         struct snd_card *card;
 152         struct snd_cs4231 *chip;
 153         card = platform_get_drvdata(dev);
 154         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 155         chip = card->private_data;
 156         chip->suspend(chip);
 157         return 0;
 158 }
 159
 160 static int snd_cs4231_resume(struct platform_device *dev)
 161 {
 162         struct snd_card *card;
 163         struct snd_cs4231 *chip;
 164         card = platform_get_drvdata(dev);
 165         chip = card->private_data;
 166         chip->resume(chip);
 167         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 168         return 0;
 169 }
 170 #endif
 171
 172 #define SND_CS4231_DRIVER       "snd_cs4231"
 173
 174 static struct platform_driver snd_cs4231_driver = {
 175         .probe          = snd_cs4231_probe,
 176         .remove         = __devexit_p(snd_cs4231_remove),
 177 #ifdef CONFIG_PM
 178         .suspend        = snd_cs4231_suspend,
 179         .resume         = snd_cs4231_resume,
 180 #endif
 181         .driver         = {
 182                 .name   = SND_CS4231_DRIVER
 183         },
 184 };
 185
 186 static int __init alsa_card_cs4231_init(void)
 187 {
 188         int i, cards, err;
 189
 190         err = platform_driver_register(&snd_cs4231_driver);
 191         if (err < 0)
 192                 return err;
 193
 194         cards = 0;
 195         for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
 196                 struct platform_device *device;
 197                 device = platform_device_register_simple(SND_CS4231_DRIVER,
 198                                                          i, NULL, 0);
 199                 if (IS_ERR(device)) {
 200                         err = PTR_ERR(device);
 201                         goto errout;
 202                 }
 203                 cards++;
 204         }
 205         if (!cards) {
 206 #ifdef MODULE
 207                 printk(KERN_ERR "CS4231 soundcard not found or device busy\n");
 208 #endif
 209                 err = -ENODEV;
 210                 goto errout;
 211         }
 212         return 0;
 213
 214  errout:
 215         platform_driver_unregister(&snd_cs4231_driver);
 216         return err;
 217 }
 218
 219 static void __exit alsa_card_cs4231_exit(void)
 220 {
 221         platform_driver_unregister(&snd_cs4231_driver);
 222 }
 223
 224 module_init(alsa_card_cs4231_init)
 225 module_exit(alsa_card_cs4231_exit)