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 <linux/module.h>
  16#include <sound/core.h>
  17#include <sound/initval.h>
  18#include "ctatc.h"
  19#include "cthardware.h"
  20
  21MODULE_AUTHOR("Creative Technology Ltd");
  22MODULE_DESCRIPTION("X-Fi driver version 1.03");
  23MODULE_LICENSE("GPL v2");
  24MODULE_SUPPORTED_DEVICE("{{Creative Labs, Sound Blaster X-Fi}");
  25
  26static unsigned int reference_rate = 48000;
  27static unsigned int multiple = 2;
  28MODULE_PARM_DESC(reference_rate, "Reference rate (default=48000)");
  29module_param(reference_rate, uint, S_IRUGO);
  30MODULE_PARM_DESC(multiple, "Rate multiplier (default=2)");
  31module_param(multiple, uint, S_IRUGO);
  32
  33static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  34static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  35static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  36static unsigned int subsystem[SNDRV_CARDS];
  37
  38module_param_array(index, int, NULL, 0444);
  39MODULE_PARM_DESC(index, "Index value for Creative X-Fi driver");
  40module_param_array(id, charp, NULL, 0444);
  41MODULE_PARM_DESC(id, "ID string for Creative X-Fi driver");
  42module_param_array(enable, bool, NULL, 0444);
  43MODULE_PARM_DESC(enable, "Enable Creative X-Fi driver");
  44module_param_array(subsystem, int, NULL, 0444);
  45MODULE_PARM_DESC(subsystem, "Override subsystem ID for Creative X-Fi driver");
  46
  47static 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};
  57MODULE_DEVICE_TABLE(pci, ct_pci_dev_ids);
  58
  59static int
  60ct_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
 117error:
 118        snd_card_free(card);
 119        return err;
 120}
 121
 122static void 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_SLEEP
 129static int ct_card_suspend(struct device *dev)
 130{
 131        struct snd_card *card = dev_get_drvdata(dev);
 132        struct ct_atc *atc = card->private_data;
 133
 134        return atc->suspend(atc);
 135}
 136
 137static int ct_card_resume(struct device *dev)
 138{
 139        struct snd_card *card = dev_get_drvdata(dev);
 140        struct ct_atc *atc = card->private_data;
 141
 142        return atc->resume(atc);
 143}
 144
 145static SIMPLE_DEV_PM_OPS(ct_card_pm, ct_card_suspend, ct_card_resume);
 146#define CT_CARD_PM_OPS  &ct_card_pm
 147#else
 148#define CT_CARD_PM_OPS  NULL
 149#endif
 150
 151static struct pci_driver ct_driver = {
 152        .name = KBUILD_MODNAME,
 153        .id_table = ct_pci_dev_ids,
 154        .probe = ct_card_probe,
 155        .remove = ct_card_remove,
 156        .driver = {
 157                .pm = CT_CARD_PM_OPS,
 158        },
 159};
 160
 161module_pci_driver(ct_driver);
 162