提交 d1458279 编写于 作者: T Takashi Iwai

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: NTakashi Iwai <tiwai@suse.de>
上级 47e91348
......@@ -458,5 +458,8 @@ struct snd_pci_quirk {
const struct snd_pci_quirk *
snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list);
const struct snd_pci_quirk *
snd_pci_quirk_lookup_id(u16 vendor, u16 device,
const struct snd_pci_quirk *list);
#endif /* __SOUND_CORE_H */
......@@ -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
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