diff options
| author | Bauke Jan Douma <bjdouma@xs4all.nl> | 2006-02-28 21:44:36 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-03-23 14:35:13 -0800 |
| commit | e5548e960f38557825e50806b52cb24c9e730aa2 (patch) | |
| tree | f67ae1e04677f931e965a282fbcdf44349201e48 | |
| parent | 3c0a654e390d00fef9d8faed758f5e1e8078adb5 (diff) | |
| download | lwn-e5548e960f38557825e50806b52cb24c9e730aa2.tar.gz lwn-e5548e960f38557825e50806b52cb24c9e730aa2.zip | |
[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: Bauke Jan Douma <bjdouma@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/pci/quirks.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index af4bc8e2cf83..d71c31df7fdf 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -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 ); |