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Commit 7daa0c4f authored by Johannes Goecke's avatar Johannes Goecke Committed by Linus Torvalds
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[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: default avatarTakashi Iwai <tiwai@suse.de>
Cc: Lee Revell <rlrevell@joe-job.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 68876baf

drivers/pci/quirks.c

+29 −0
Original line number Diff line number Diff line
@@ -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