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