From 8bd4bb7a35e8ebb015a531218614c48e10a3c4ee Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 30 Jan 2009 17:27:45 +0100
Subject: [PATCH] ALSA: Add subdevice_mask field to quirk entries

Introduced a new field, subdevice_mask, which specifies the bitmask
to match with the given subdevice ID.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 include/sound/core.h | 16 ++++++++++++++--
 sound/core/misc.c    | 10 ++++++----
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/include/sound/core.h b/include/sound/core.h
index f632484bc74..f67952a61a2 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -446,21 +446,33 @@ static inline int __snd_bug_on(int cond)
 struct snd_pci_quirk {
 	unsigned short subvendor;	/* PCI subvendor ID */
 	unsigned short subdevice;	/* PCI subdevice ID */
+	unsigned short subdevice_mask;	/* bitmask to match */
 	int value;			/* value */
 #ifdef CONFIG_SND_DEBUG_VERBOSE
 	const char *name;		/* name of the device (optional) */
 #endif
 };
 
-#define _SND_PCI_QUIRK_ID(vend,dev) \
-	.subvendor = (vend), .subdevice = (dev)
+#define _SND_PCI_QUIRK_ID_MASK(vend, mask, dev)	\
+	.subvendor = (vend), .subdevice = (dev), .subdevice_mask = (mask)
+#define _SND_PCI_QUIRK_ID(vend, dev) \
+	_SND_PCI_QUIRK_ID_MASK(vend, 0xffff, dev)
 #define SND_PCI_QUIRK_ID(vend,dev) {_SND_PCI_QUIRK_ID(vend, dev)}
 #ifdef CONFIG_SND_DEBUG_VERBOSE
 #define SND_PCI_QUIRK(vend,dev,xname,val) \
 	{_SND_PCI_QUIRK_ID(vend, dev), .value = (val), .name = (xname)}
+#define SND_PCI_QUIRK_VENDOR(vend, xname, val)			\
+	{_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val), .name = (xname)}
+#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val)			\
+	{_SND_PCI_QUIRK_ID_MASK(vend, mask, dev),			\
+			.value = (val), .name = (xname)}
 #else
 #define SND_PCI_QUIRK(vend,dev,xname,val) \
 	{_SND_PCI_QUIRK_ID(vend, dev), .value = (val)}
+#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val)			\
+	{_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), .value = (val)}
+#define SND_PCI_QUIRK_VENDOR(vend, xname, val)			\
+	{_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val)}
 #endif
 
 const struct snd_pci_quirk *
diff --git a/sound/core/misc.c b/sound/core/misc.c
index 38524f615d9..a9710e0c97a 100644
--- a/sound/core/misc.c
+++ b/sound/core/misc.c
@@ -95,12 +95,14 @@ snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
 {
 	const struct snd_pci_quirk *q;
 
-	for (q = list; q->subvendor; q++)
-		if (q->subvendor == pci->subsystem_vendor &&
-		    (!q->subdevice || q->subdevice == pci->subsystem_device))
+	for (q = list; q->subvendor; q++) {
+		if (q->subvendor != pci->subsystem_vendor)
+			continue;
+		if (!q->subdevice ||
+		    (pci->subsystem_device & q->subdevice_mask) == q->subdevice)
 			return q;
+	}
 	return NULL;
 }
-
 EXPORT_SYMBOL(snd_pci_quirk_lookup);
 #endif