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>

2 files changed, 47 insertions, 32 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.
  *
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 3b0bb32..59d4da2 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -925,38 +925,6 @@ 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.
- *
- * FIXME: Presently this quirk will run on anything that has an 8237
- * which isn't correct, we need to check DMI tables or something in
- * order to make sure it only runs on the MSI-K8T-Neo2Fir.  Because it
- * runs everywhere at present we suppress the printk output in most
- * irrelevant cases.
- */
-static void k8t_sound_hostbridge(struct pci_dev *dev)
-{
-	unsigned char val;
-
-	pci_read_config_byte(dev, 0x50, &val);
-	if (val == 0xc8) {
-		/* Assume it's probably a MSI-K8T-Neo2Fir */
-		printk(KERN_INFO "PCI: MSI-K8T-Neo2Fir, attempting to turn soundcard ON\n");
-		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-Neo2Fir, soundcard still off\n");
-		else
-			printk(KERN_INFO "PCI: MSI-K8T-Neo2Fir, soundcard on\n");
-	}
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, k8t_sound_hostbridge);
-DECLARE_PCI_FIXUP_RESUME(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