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authorTakashi Iwai <tiwai@suse.de>2010-01-14 09:16:52 +0100
committerTakashi Iwai <tiwai@suse.de>2010-01-14 09:18:48 +0100
commitd1458279bf9c575a52fd22818ca19c463f380aba (patch)
tree4e83317ce1a574111efc319e2bb7e75003cecaef /sound/core/misc.c
parent47e91348459901c30cc1bb4897e62ced21ca243a (diff)
ALSA: Add snd_pci_quirk_lookup_id()
Added a new function to look up a quirk entry with the given PCI SSID instead of a pci device pointer. This can be used when the searched ID is overridden for debugging or such a purpose. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/misc.c')
-rw-r--r--sound/core/misc.c32
1 files changed, 27 insertions, 5 deletions
diff --git a/sound/core/misc.c b/sound/core/misc.c
index 23a032c6d487..3da4f92427d8 100644
--- a/sound/core/misc.c
+++ b/sound/core/misc.c
@@ -101,8 +101,9 @@ EXPORT_SYMBOL_GPL(__snd_printk);
#ifdef CONFIG_PCI
#include <linux/pci.h>
/**
- * snd_pci_quirk_lookup - look up a PCI SSID quirk list
- * @pci: pci_dev handle
+ * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
+ * @vendor: PCI SSV id
+ * @device: PCI SSD id
* @list: quirk list, terminated by a null entry
*
* Look through the given quirk list and finds a matching entry
@@ -112,18 +113,39 @@ EXPORT_SYMBOL_GPL(__snd_printk);
* Returns the matched entry pointer, or NULL if nothing matched.
*/
const struct snd_pci_quirk *
-snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
+snd_pci_quirk_lookup_id(u16 vendor, u16 device,
+ const struct snd_pci_quirk *list)
{
const struct snd_pci_quirk *q;
for (q = list; q->subvendor; q++) {
- if (q->subvendor != pci->subsystem_vendor)
+ if (q->subvendor != vendor)
continue;
if (!q->subdevice ||
- (pci->subsystem_device & q->subdevice_mask) == q->subdevice)
+ (device & q->subdevice_mask) == q->subdevice)
return q;
}
return NULL;
}
+EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
+
+/**
+ * snd_pci_quirk_lookup - look up a PCI SSID quirk list
+ * @pci: pci_dev handle
+ * @list: quirk list, terminated by a null entry
+ *
+ * Look through the given quirk list and finds a matching entry
+ * with the same PCI SSID. When subdevice is 0, all subdevice
+ * values may match.
+ *
+ * Returns the matched entry pointer, or NULL if nothing matched.
+ */
+const struct snd_pci_quirk *
+snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
+{
+ return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
+ pci->subsystem_device,
+ list);
+}
EXPORT_SYMBOL(snd_pci_quirk_lookup);
#endif