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Commit e5548e96 authored by Bauke Jan Douma's avatar Bauke Jan Douma Committed by Greg Kroah-Hartman
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[PATCH] PCI: quirk for asus a8v and a8v delux motherboards 



On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
and MC97 modem controller are deactivated when a second PCI soundcard
is present.  This patch enables them.

Signed-off-by: default avatarBauke Jan Douma <bjdouma@xs4all.nl>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 3c0a654e

drivers/pci/quirks.c

+31 −0
Original line number Diff line number Diff line
@@ -1074,6 +1074,37 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_651, quirk_sis_96x_ 
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_735,		quirk_sis_96x_compatible );



DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_503,		quirk_sis_503 );

/*

 * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller

 * and MC97 modem controller are disabled when a second PCI soundcard is

 * present. This patch, tweaking the VT8237 ISA bridge, enables them.

 * -- bjd

 */

static void __init asus_hides_ac97_lpc(struct pci_dev *dev)

{

	u8 val;

	int asus_hides_ac97 = 0;



	if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) {

		if (dev->device == PCI_DEVICE_ID_VIA_8237)

			asus_hides_ac97 = 1;

	}



	if (!asus_hides_ac97)

		return;



	pci_read_config_byte(dev, 0x50, &val);

	if (val & 0xc0) {

		pci_write_config_byte(dev, 0x50, val & (~0xc0));

		pci_read_config_byte(dev, 0x50, &val);

		if (val & 0xc0)

			printk(KERN_INFO "PCI: onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val);

		else

			printk(KERN_INFO "PCI: enabled onboard AC97/MC97 devices\n");

	}

}

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc );





DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_961,		quirk_sis_96x_smbus );

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_962,		quirk_sis_96x_smbus );