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ALSA: hda - Add a white-list for MSI option 

Created a white-list to enable MSI since some devices require MSI
explicitly due to BIOS/ACPI problems.  Simply using a quirk list.
As the first case, take HP Compaq CQ40.

Reference: Novell bnc#529971
	https://bugzilla.novell.com/show_bug.cgi?id=529971

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-08-11 14:21:26 +02:00
parent b59bdf3b0c
commit 4d8e22e0f6
1 changed files with 25 additions and 1 deletions
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26
sound/pci/hda/hda_intel.c
View File

@ -2299,6 +2299,30 @@ static void __devinit check_probe_mask(struct azx *chip, int dev)
}
}
/*
* white-list for enable_msi
*/
static struct snd_pci_quirk msi_white_list[] __devinitdata = {
SND_PCI_QUIRK(0x103c, 0x3607, "HP Compa CQ40", 1),
{}
};
static void __devinit check_msi(struct azx *chip)
{
const struct snd_pci_quirk *q;
chip->msi = enable_msi;
if (chip->msi)
return;
q = snd_pci_quirk_lookup(chip->pci, msi_white_list);
if (q) {
printk(KERN_INFO
"hda_intel: msi for device %04x:%04x set to %d\n",
q->subvendor, q->subdevice, q->value);
chip->msi = q->value;
}
}
/*
* constructor
@ -2333,7 +2357,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
chip->pci = pci;
chip->irq = -1;
chip->driver_type = driver_type;
chip->msi = enable_msi;
check_msi(chip);
chip->dev_index = dev;
INIT_WORK(&chip->irq_pending_work, azx_irq_pending_work);