From 7daa0c4f51897d5d956a62a2bac438e3b58d85dc Mon Sep 17 00:00:00 2001 From: Johannes Goecke Date: Thu, 20 Apr 2006 02:43:17 -0700 Subject: [PATCH] [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 Acked-by: Takashi Iwai Cc: Lee Revell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/pci/quirks.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 827550d25c..c42ae2cf8d 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -864,6 +864,35 @@ 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 -- 2.39.5