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 <linux/module.h>
  16 #include <sound/core.h>
  17 #include <sound/initval.h>
  18 #include "ctatc.h"
  19 #include "cthardware.h"
  20
  21 MODULE_AUTHOR("Creative Technology Ltd");
  22 MODULE_DESCRIPTION("X-Fi driver version 1.03");
  23 MODULE_LICENSE("GPL v2");
  24 MODULE_SUPPORTED_DEVICE("{{Creative Labs, Sound Blaster X-Fi}");
  25
  26 static unsigned int reference_rate = 48000;
  27 static unsigned int multiple = 2;
  28 MODULE_PARM_DESC(reference_rate, "Reference rate (default=48000)");
  29 module_param(reference_rate, uint, S_IRUGO);
  30 MODULE_PARM_DESC(multiple, "Rate multiplier (default=2)");
  31 module_param(multiple, uint, S_IRUGO);
  32
  33 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  34 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  35 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  36 static unsigned int subsystem[SNDRV_CARDS];
  37
  38 module_param_array(index, int, NULL, 0444);
  39 MODULE_PARM_DESC(index, "Index value for Creative X-Fi driver");
  40 module_param_array(id, charp, NULL, 0444);
  41 MODULE_PARM_DESC(id, "ID string for Creative X-Fi driver");
  42 module_param_array(enable, bool, NULL, 0444);
  43 MODULE_PARM_DESC(enable, "Enable Creative X-Fi driver");
  44 module_param_array(subsystem, int, NULL, 0444);
  45 MODULE_PARM_DESC(subsystem, "Override subsystem ID for Creative X-Fi driver");
  46
  47 static DEFINE_PCI_DEVICE_TABLE(ct_pci_dev_ids) = {
  48         /* only X-Fi is supported, so... */
  49         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_20K1),
  50           .driver_data = ATC20K1,
  51         },
  52         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_20K2),
  53           .driver_data = ATC20K2,
  54         },
  55         { 0, }
  56 };
  57 MODULE_DEVICE_TABLE(pci, ct_pci_dev_ids);
  58
  59 static int __devinit
  60 ct_card_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
  61 {
  62         static int dev;
  63         struct snd_card *card;
  64         struct ct_atc *atc;
  65         int err;
  66
  67         if (dev >= SNDRV_CARDS)
  68                 return -ENODEV;
  69
  70         if (!enable[dev]) {
  71                 dev++;
  72                 return -ENOENT;
  73         }
  74         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
  75         if (err)
  76                 return err;
  77         if ((reference_rate != 48000) && (reference_rate != 44100)) {
  78                 printk(KERN_ERR "ctxfi: Invalid reference_rate value %u!!!\n",
  79                        reference_rate);
  80                 printk(KERN_ERR "ctxfi: The valid values for reference_rate "
  81                        "are 48000 and 44100, Value 48000 is assumed.\n");
  82                 reference_rate = 48000;
  83         }
  84         if ((multiple != 1) && (multiple != 2) && (multiple != 4)) {
  85                 printk(KERN_ERR "ctxfi: Invalid multiple value %u!!!\n",
  86                        multiple);
  87                 printk(KERN_ERR "ctxfi: The valid values for multiple are "
  88                        "1, 2 and 4, Value 2 is assumed.\n");
  89                 multiple = 2;
  90         }
  91         err = ct_atc_create(card, pci, reference_rate, multiple,
  92                             pci_id->driver_data, subsystem[dev], &atc);
  93         if (err < 0)
  94                 goto error;
  95
  96         card->private_data = atc;
  97
  98         /* Create alsa devices supported by this card */
  99         err = ct_atc_create_alsa_devs(atc);
 100         if (err < 0)
 101                 goto error;
 102
 103         strcpy(card->driver, "SB-XFi");
 104         strcpy(card->shortname, "Creative X-Fi");
 105         snprintf(card->longname, sizeof(card->longname), "%s %s %s",
 106                  card->shortname, atc->chip_name, atc->model_name);
 107
 108         err = snd_card_register(card);
 109         if (err < 0)
 110                 goto error;
 111
 112         pci_set_drvdata(pci, card);
 113         dev++;
 114
 115         return 0;
 116
 117 error:
 118         snd_card_free(card);
 119         return err;
 120 }
 121
 122 static void __devexit ct_card_remove(struct pci_dev *pci)
 123 {
 124         snd_card_free(pci_get_drvdata(pci));
 125         pci_set_drvdata(pci, NULL);
 126 }
 127
 128 #ifdef CONFIG_PM
 129 static int ct_card_suspend(struct pci_dev *pci, pm_message_t state)
 130 {
 131         struct snd_card *card = pci_get_drvdata(pci);
 132         struct ct_atc *atc = card->private_data;
 133
 134         return atc->suspend(atc, state);
 135 }
 136
 137 static int ct_card_resume(struct pci_dev *pci)
 138 {
 139         struct snd_card *card = pci_get_drvdata(pci);
 140         struct ct_atc *atc = card->private_data;
 141
 142         return atc->resume(atc);
 143 }
 144 #endif
 145
 146 static struct pci_driver ct_driver = {
 147         .name = KBUILD_MODNAME,
 148         .id_table = ct_pci_dev_ids,
 149         .probe = ct_card_probe,
 150         .remove = __devexit_p(ct_card_remove),
 151 #ifdef CONFIG_PM
 152         .suspend = ct_card_suspend,
 153         .resume = ct_card_resume,
 154 #endif
 155 };
 156
 157 static int __init ct_card_init(void)
 158 {
 159         return pci_register_driver(&ct_driver);
 160 }
 161
 162 static void __exit ct_card_exit(void)
 163 {
 164         pci_unregister_driver(&ct_driver);
 165 }
 166
 167 module_init(ct_card_init)
 168 module_exit(ct_card_exit)