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 bool 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 const struct pci_device_id 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
  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_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
  75                            0, &card);
  76         if (err)
  77                 return err;
  78         if ((reference_rate != 48000) && (reference_rate != 44100)) {
  79                 dev_err(card->dev,
  80                         "Invalid reference_rate value %u!!!\n",
  81                         reference_rate);
  82                 dev_err(card->dev,
  83                         "The valid values for reference_rate are 48000 and 44100, Value 48000 is assumed.\n");
  84                 reference_rate = 48000;
  85         }
  86         if ((multiple != 1) && (multiple != 2) && (multiple != 4)) {
  87                 dev_err(card->dev, "Invalid multiple value %u!!!\n",
  88                         multiple);
  89                 dev_err(card->dev,
  90                         "The valid values for multiple are 1, 2 and 4, Value 2 is assumed.\n");
  91                 multiple = 2;
  92         }
  93         err = ct_atc_create(card, pci, reference_rate, multiple,
  94                             pci_id->driver_data, subsystem[dev], &atc);
  95         if (err < 0)
  96                 goto error;
  97
  98         card->private_data = atc;
  99
 100         /* Create alsa devices supported by this card */
 101         err = ct_atc_create_alsa_devs(atc);
 102         if (err < 0)
 103                 goto error;
 104
 105         strcpy(card->driver, "SB-XFi");
 106         strcpy(card->shortname, "Creative X-Fi");
 107         snprintf(card->longname, sizeof(card->longname), "%s %s %s",
 108                  card->shortname, atc->chip_name, atc->model_name);
 109
 110         err = snd_card_register(card);
 111         if (err < 0)
 112                 goto error;
 113
 114         pci_set_drvdata(pci, card);
 115         dev++;
 116
 117         return 0;
 118
 119 error:
 120         snd_card_free(card);
 121         return err;
 122 }
 123
 124 static void ct_card_remove(struct pci_dev *pci)
 125 {
 126         snd_card_free(pci_get_drvdata(pci));
 127 }
 128
 129 #ifdef CONFIG_PM_SLEEP
 130 static int ct_card_suspend(struct device *dev)
 131 {
 132         struct snd_card *card = dev_get_drvdata(dev);
 133         struct ct_atc *atc = card->private_data;
 134
 135         return atc->suspend(atc);
 136 }
 137
 138 static int ct_card_resume(struct device *dev)
 139 {
 140         struct snd_card *card = dev_get_drvdata(dev);
 141         struct ct_atc *atc = card->private_data;
 142
 143         return atc->resume(atc);
 144 }
 145
 146 static SIMPLE_DEV_PM_OPS(ct_card_pm, ct_card_suspend, ct_card_resume);
 147 #define CT_CARD_PM_OPS  &ct_card_pm
 148 #else
 149 #define CT_CARD_PM_OPS  NULL
 150 #endif
 151
 152 static struct pci_driver ct_driver = {
 153         .name = KBUILD_MODNAME,
 154         .id_table = ct_pci_dev_ids,
 155         .probe = ct_card_probe,
 156         .remove = ct_card_remove,
 157         .driver = {
 158                 .pm = CT_CARD_PM_OPS,
 159         },
 160 };
 161
 162 module_pci_driver(ct_driver);