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
  36 module_param_array(index, int, NULL, 0444);
  37 MODULE_PARM_DESC(index, "Index value for Creative X-Fi driver");
  38 module_param_array(id, charp, NULL, 0444);
  39 MODULE_PARM_DESC(id, "ID string for Creative X-Fi driver");
  40 module_param_array(enable, bool, NULL, 0444);
  41 MODULE_PARM_DESC(enable, "Enable Creative X-Fi driver");
  42
  43 static struct pci_device_id ct_pci_dev_ids[] = {
  44         /* only X-Fi is supported, so... */
  45         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_20K1),
  46           .driver_data = ATC20K1,
  47         },
  48         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_20K2),
  49           .driver_data = ATC20K2,
  50         },
  51         { 0, }
  52 };
  53 MODULE_DEVICE_TABLE(pci, ct_pci_dev_ids);
  54
  55 static int __devinit
  56 ct_card_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
  57 {
  58         static int dev;
  59         struct snd_card *card;
  60         struct ct_atc *atc;
  61         int err;
  62
  63         if (dev >= SNDRV_CARDS)
  64                 return -ENODEV;
  65
  66         if (!enable[dev]) {
  67                 dev++;
  68                 return -ENOENT;
  69         }
  70         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
  71         if (err)
  72                 return err;
  73         if ((reference_rate != 48000) && (reference_rate != 44100)) {
  74                 printk(KERN_ERR "ctxfi: Invalid reference_rate value %u!!!\n",
  75                        reference_rate);
  76                 printk(KERN_ERR "ctxfi: The valid values for reference_rate "
  77                        "are 48000 and 44100, Value 48000 is assumed.\n");
  78                 reference_rate = 48000;
  79         }
  80         if ((multiple != 1) && (multiple != 2)) {
  81                 printk(KERN_ERR "ctxfi: Invalid multiple value %u!!!\n",
  82                        multiple);
  83                 printk(KERN_ERR "ctxfi: The valid values for multiple are "
  84                        "1 and 2, Value 2 is assumed.\n");
  85                 multiple = 2;
  86         }
  87         err = ct_atc_create(card, pci, reference_rate, multiple,
  88                             pci_id->driver_data, &atc);
  89         if (err < 0)
  90                 goto error;
  91
  92         card->private_data = atc;
  93
  94         /* Create alsa devices supported by this card */
  95         err = ct_atc_create_alsa_devs(atc);
  96         if (err < 0)
  97                 goto error;
  98
  99         strcpy(card->driver, "SB-XFi");
 100         strcpy(card->shortname, "Creative X-Fi");
 101         snprintf(card->longname, sizeof(card->longname), "%s %s %s",
 102                  card->shortname, atc->chip_name, atc->model_name);
 103
 104         err = snd_card_register(card);
 105         if (err < 0)
 106                 goto error;
 107
 108         pci_set_drvdata(pci, card);
 109         dev++;
 110
 111         return 0;
 112
 113 error:
 114         snd_card_free(card);
 115         return err;
 116 }
 117
 118 static void __devexit ct_card_remove(struct pci_dev *pci)
 119 {
 120         snd_card_free(pci_get_drvdata(pci));
 121         pci_set_drvdata(pci, NULL);
 122 }
 123
 124 #ifdef CONFIG_PM
 125 static int ct_card_suspend(struct pci_dev *pci, pm_message_t state)
 126 {
 127         struct snd_card *card = pci_get_drvdata(pci);
 128         struct ct_atc *atc = card->private_data;
 129
 130         return atc->suspend(atc, state);
 131 }
 132
 133 static int ct_card_resume(struct pci_dev *pci)
 134 {
 135         struct snd_card *card = pci_get_drvdata(pci);
 136         struct ct_atc *atc = card->private_data;
 137
 138         return atc->resume(atc);
 139 }
 140 #endif
 141
 142 static struct pci_driver ct_driver = {
 143         .name = "SB-XFi",
 144         .id_table = ct_pci_dev_ids,
 145         .probe = ct_card_probe,
 146         .remove = __devexit_p(ct_card_remove),
 147 #ifdef CONFIG_PM
 148         .suspend = ct_card_suspend,
 149         .resume = ct_card_resume,
 150 #endif
 151 };
 152
 153 static int __init ct_card_init(void)
 154 {
 155         return pci_register_driver(&ct_driver);
 156 }
 157
 158 static void __exit ct_card_exit(void)
 159 {
 160         pci_unregister_driver(&ct_driver);
 161 }
 162
 163 module_init(ct_card_init)
 164 module_exit(ct_card_exit)