From root@skyscraper.xs4all.nl Tue Feb 28 12:44:38 2006 Date: Tue, 28 Feb 2006 21:44:36 +0100 From: bjd To: gregkh@suse.de Subject: PCI: quirk for asus a8v and a8v delux motherboards Message-ID: <20060228204436.GA18312@skyscraper.unix9.prv> Content-Disposition: inline From: Bauke Jan Douma 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: Bauke Jan Douma Signed-off-by: Greg Kroah-Hartman --- drivers/pci/quirks.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) --- gregkh-2.6.orig/drivers/pci/quirks.c +++ gregkh-2.6/drivers/pci/quirks.c @@ -1074,6 +1074,37 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S 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 );