[PATCH] MSI-K8T-Neo2-Fir OnboardSound and additional Soundcard

On the MSI-K8T-NEO2 FIR ( Athlon-64, Socket 939 with VIA-K8T800- Chipset
and onboard Sound,...  ) the BIOS lets you choose "DISABLED" or "AUTO" for
the On-Board Sound Device.

If you add another PCI-Sound-Card the BIOS disables the on-board device.

So far I have a Quirk, that does set the correspondent BIT in the
PCI-registers to enable the soundcard.

But how to ensure that the code is executed ONLY on excactly this kind of
boards (not any other with similar Chipset)?

Cc: Jaroslav Kysela <perex@suse.cz>
Acked-by: Takashi Iwai <tiwai@suse.de>
Cc: Lee Revell <rlrevell@joe-job.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 827550d25c9e..c42ae2cf8d64 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -865,6 +865,35 @@ static void __init quirk_eisa_bridge(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_82375,      quirk_eisa_bridge );
 
 /*
+ * On the MSI-K8T-Neo2Fir Board, the internal Soundcard is disabled
+ * when a PCI-Soundcard is added. The BIOS only gives Options
+ * "Disabled" and "AUTO". This Quirk Sets the corresponding
+ * Register-Value to enable the Soundcard.
+ */
+static void __init k8t_sound_hostbridge(struct pci_dev *dev)
+{
+        unsigned char val;
+
+        printk(KERN_INFO "PCI: Quirk-MSI-K8T Soundcard On\n");
+        pci_read_config_byte(dev, 0x50, &val);
+        if (val == 0x88 || val == 0xc8) {
+                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: MSI-K8T soundcard still off\n");
+                else
+                        printk(KERN_INFO "PCI: MSI-K8T soundcard on\n");
+        } else {
+                printk(KERN_INFO "PCI: Unexpected Value in PCI-Register: "
+                                        "no Change!\n");
+        }
+
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, k8t_sound_hostbridge);
+
+/*
  * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
  * is not activated. The myth is that Asus said that they do not want the
  * users to be irritated by just another PCI Device in the Win98 device