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| author | Johannes Goecke <goecke@upb.de> | 2007-09-10 10:46:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-12 15:03:16 -0700 |
| commit | 346ca04d050ac48ceb8e4a6b1c76c2d7fd5d1a6a (patch) | |
| tree | e25eb9141a7b859393417bf0dc157732bc89c57f /arch/x86/pci/fixup.c | |
| parent | 651472fbff71df39d3d734de31bca6e5412a688b (diff) | |
| download | kernel_samsung_tuna-346ca04d050ac48ceb8e4a6b1c76c2d7fd5d1a6a.zip kernel_samsung_tuna-346ca04d050ac48ceb8e4a6b1c76c2d7fd5d1a6a.tar.gz kernel_samsung_tuna-346ca04d050ac48ceb8e4a6b1c76c2d7fd5d1a6a.tar.bz2 | |
PCI: re-enable onboard sound on "MSI K8T Neo2-FIR"
On the "MSI K8T Neo2-FIR" board the BIOS disables the onboard
soundcard, if a second PCI soundcard is present.
This patch sets the korrect register bit to enable the onboard sound.
Removed old code in /drivers/pci/quirks.c that only checks for the
PCI-ID and fires on any Board with VIA 8237.
New code in /arch/i386/pci/fixup.c checks the DMI-tables and only runs
on the specific board.
Signed-off-by: Johannes Goecke <goecke@upb.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/x86/pci/fixup.c')
| -rw-r--r-- | arch/x86/pci/fixup.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c index c82cbf4..6cff66d 100644 --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -353,6 +353,53 @@ static void __devinit pci_fixup_video(struct pci_dev *pdev) } DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video); + +static struct dmi_system_id __devinitdata msi_k8t_dmi_table[] = { + { + .ident = "MSI-K8T-Neo2Fir", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "MSI"), + DMI_MATCH(DMI_PRODUCT_NAME, "MS-6702E"), + }, + }, + {} +}; + +/* + * The AMD-Athlon64 board MSI "K8T Neo2-FIR" disables the onboard sound + * card if a PCI-soundcard is added. + * + * The BIOS only gives options "DISABLED" and "AUTO". This code sets + * the corresponding register-value to enable the soundcard. + * + * The soundcard is only enabled, if the mainborad is identified + * via DMI-tables and the soundcard is detected to be off. + */ +static void __devinit pci_fixup_msi_k8t_onboard_sound(struct pci_dev *dev) +{ + unsigned char val; + if (!dmi_check_system(msi_k8t_dmi_table)) + return; /* only applies to MSI K8T Neo2-FIR */ + + pci_read_config_byte(dev, 0x50, &val); + if (val & 0x40) { + pci_write_config_byte(dev, 0x50, val & (~0x40)); + + /* verify the change for status output */ + pci_read_config_byte(dev, 0x50, &val); + if (val & 0x40) + printk(KERN_INFO "PCI: Detected MSI K8T Neo2-FIR, " + "can't enable onboard soundcard!\n"); + else + printk(KERN_INFO "PCI: Detected MSI K8T Neo2-FIR, " + "enabled onboard soundcard.\n"); + } +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, + pci_fixup_msi_k8t_onboard_sound); +DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, + pci_fixup_msi_k8t_onboard_sound); + /* * Some Toshiba laptops need extra code to enable their TI TSB43AB22/A. * |