release/src-rt-6.x.4708/linux/linux-2.6.36/sound/pci/ctxfi/xfi.c

   1 /*
   2  * xfi linux driver.
   3  *
   4  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
   5  *
   6  * This source file is released under GPL v2 license (no other versions).
   7  * See the COPYING file included in the main directory of this source
   8  * distribution for the license terms and conditions.
   9  */
  10
  11 #include <linux/init.h>
  12 #include <linux/pci.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/pci_ids.h>
  15 #include <sound/core.h>
  16 #include <sound/initval.h>
  17 #include "ctatc.h"
  18 #include "cthardware.h"
  19
  20 MODULE_AUTHOR("Creative Technology Ltd");
  21 MODULE_DESCRIPTION("X-Fi driver version 1.03");
  22 MODULE_LICENSE("GPL v2");
  23 MODULE_SUPPORTED_DEVICE("{{Creative Labs, Sound Blaster X-Fi}");
  24
  25 static unsigned int reference_rate = 48000;
  26 static unsigned int multiple = 2;
  27 MODULE_PARM_DESC(reference_rate, "Reference rate (default=48000)");
  28 module_param(reference_rate, uint, S_IRUGO);
  29 MODULE_PARM_DESC(multiple, "Rate multiplier (default=2)");
  30 module_param(multiple, uint, S_IRUGO);
  31
  32 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  33 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  34 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  35 static unsigned int subsystem[SNDRV_CARDS];
  36
  37 module_param_array(index, int, NULL, 0444);
  38 MODULE_PARM_DESC(index, "Index value for Creative X-Fi driver");
  39 module_param_array(id, charp, NULL, 0444);
  40 MODULE_PARM_DESC(id, "ID string for Creative X-Fi driver");
  41 module_param_array(enable, bool, NULL, 0444);
  42 MODULE_PARM_DESC(enable, "Enable Creative X-Fi driver");
  43 module_param_array(subsystem, int, NULL, 0444);
  44 MODULE_PARM_DESC(subsystem, "Override subsystem ID for Creative X-Fi driver");
  45
  46 static DEFINE_PCI_DEVICE_TABLE(ct_pci_dev_ids) = {
  47         /* only X-Fi is supported, so... */
  48         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_20K1),
  49           .driver_data = ATC20K1,
  50         },
  51         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_20K2),
  52           .driver_data = ATC20K2,
  53         },
  54         { 0, }
  55 };
  56 MODULE_DEVICE_TABLE(pci, ct_pci_dev_ids);
  57
  58 static int __devinit
  59 ct_card_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
  60 {
  61         static int dev;
  62         struct snd_card *card;
  63         struct ct_atc *atc;
  64         int err;
  65
  66         if (dev >= SNDRV_CARDS)
  67                 return -ENODEV;
  68
  69         if (!enable[dev]) {
  70                 dev++;
  71                 return -ENOENT;
  72         }
  73         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
  74         if (err)
  75                 return err;
  76         if ((reference_rate != 48000) && (reference_rate != 44100)) {
  77                 printk(KERN_ERR "ctxfi: Invalid reference_rate value %u!!!\n",
  78                        reference_rate);
  79                 printk(KERN_ERR "ctxfi: The valid values for reference_rate "
  80                        "are 48000 and 44100, Value 48000 is assumed.\n");
  81                 reference_rate = 48000;
  82         }
  83         if ((multiple != 1) && (multiple != 2)) {
  84                 printk(KERN_ERR "ctxfi: Invalid multiple value %u!!!\n",
  85                        multiple);
  86                 printk(KERN_ERR "ctxfi: The valid values for multiple are "
  87                        "1 and 2, Value 2 is assumed.\n");
  88                 multiple = 2;
  89         }
  90         err = ct_atc_create(card, pci, reference_rate, multiple,
  91                             pci_id->driver_data, subsystem[dev], &atc);
  92         if (err < 0)
  93                 goto error;
  94
  95         card->private_data = atc;
  96
  97         /* Create alsa devices supported by this card */
  98         err = ct_atc_create_alsa_devs(atc);
  99         if (err < 0)
 100                 goto error;
 101
 102         strcpy(card->driver, "SB-XFi");
 103         strcpy(card->shortname, "Creative X-Fi");
 104         snprintf(card->longname, sizeof(card->longname), "%s %s %s",
 105                  card->shortname, atc->chip_name, atc->model_name);
 106
 107         err = snd_card_register(card);
 108         if (err < 0)
 109                 goto error;
 110
 111         pci_set_drvdata(pci, card);
 112         dev++;
 113
 114         return 0;
 115
 116 error:
 117         snd_card_free(card);
 118         return err;
 119 }
 120
 121 static void __devexit ct_card_remove(struct pci_dev *pci)
 122 {
 123         snd_card_free(pci_get_drvdata(pci));
 124         pci_set_drvdata(pci, NULL);
 125 }
 126
 127 #ifdef CONFIG_PM
 128 static int ct_card_suspend(struct pci_dev *pci, pm_message_t state)
 129 {
 130         struct snd_card *card = pci_get_drvdata(pci);
 131         struct ct_atc *atc = card->private_data;
 132
 133         return atc->suspend(atc, state);
 134 }
 135
 136 static int ct_card_resume(struct pci_dev *pci)
 137 {
 138         struct snd_card *card = pci_get_drvdata(pci);
 139         struct ct_atc *atc = card->private_data;
 140
 141         return atc->resume(atc);
 142 }
 143 #endif
 144
 145 static struct pci_driver ct_driver = {
 146         .name = "SB-XFi",
 147         .id_table = ct_pci_dev_ids,
 148         .probe = ct_card_probe,
 149         .remove = __devexit_p(ct_card_remove),
 150 #ifdef CONFIG_PM
 151         .suspend = ct_card_suspend,
 152         .resume = ct_card_resume,
 153 #endif
 154 };
 155
 156 static int __init ct_card_init(void)
 157 {
 158         return pci_register_driver(&ct_driver);
 159 }
 160
 161 static void __exit ct_card_exit(void)
 162 {
 163         pci_unregister_driver(&ct_driver);
 164 }
 165
 166 module_init(ct_card_init)
 167 module_exit(ct_card_exit)