diff options
| author | Johannes Goecke <goecke@upb.de> | 2006-04-20 13:43:17 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-20 18:54:04 +0400 |
| commit | 7daa0c4f51897d5d956a62a2bac438e3b58d85dc (patch) | |
| tree | e11615c35d204c48552e68c5431351277b8ee024 /drivers/pci | |
| parent | 68876baf5e713ef711b6e19a279385e14c9921e3 (diff) | |
| download | linux-7daa0c4f51897d5d956a62a2bac438e3b58d85dc.tar.xz | |
[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>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/quirks.c | 29 |
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 |