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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 
 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);
163 

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