LXR linux/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
  20MODULE_AUTHOR("Creative Technology Ltd");
  21MODULE_DESCRIPTION("X-Fi driver version 1.03");
  22MODULE_LICENSE("GPL v2");
  23MODULE_SUPPORTED_DEVICE("{{Creative Labs, Sound Blaster X-Fi}");
  24
  25static unsigned int reference_rate = 48000;
  26static unsigned int multiple = 2;
  27MODULE_PARM_DESC(reference_rate, "Reference rate (default=48000)");
  28module_param(reference_rate, uint, S_IRUGO);
  29MODULE_PARM_DESC(multiple, "Rate multiplier (default=2)");
  30module_param(multiple, uint, S_IRUGO);
  31
  32static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  33static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  34static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  35static unsigned int subsystem[SNDRV_CARDS];
  36
  37module_param_array(index, int, NULL, 0444);
  38MODULE_PARM_DESC(index, "Index value for Creative X-Fi driver");
  39module_param_array(id, charp, NULL, 0444);
  40MODULE_PARM_DESC(id, "ID string for Creative X-Fi driver");
  41module_param_array(enable, bool, NULL, 0444);
  42MODULE_PARM_DESC(enable, "Enable Creative X-Fi driver");
  43module_param_array(subsystem, int, NULL, 0444);
  44MODULE_PARM_DESC(subsystem, "Override subsystem ID for Creative X-Fi driver");
  45
  46static 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};
  56MODULE_DEVICE_TABLE(pci, ct_pci_dev_ids);
  57
  58static int __devinit
  59ct_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
 116error:
 117        snd_card_free(card);
 118        return err;
 119}
 120
 121static 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
 128static 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
 136static 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
 145static 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
 156static int __init ct_card_init(void)
 157{
 158        return pci_register_driver(&ct_driver);
 159}
 160
 161static void __exit ct_card_exit(void)
 162{
 163        pci_unregister_driver(&ct_driver);
 164}
 165
 166module_init(ct_card_init)
 167module_exit(ct_card_exit)
 168