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Commit a5a33533 authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Takashi Iwai
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ALSA: oxygen: add XIO2001 initialization 



Configure the XIO2001 bridge on PCI Express cards so that it does less
needless prefetching.

Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 0902fbb9

sound/pci/oxygen/oxygen_lib.c

+10 −1
Original line number Diff line number Diff line
@@ -319,11 +319,12 @@ static void oxygen_restore_eeprom(struct oxygen *chip, 


static void configure_pcie_bridge(struct pci_dev *pci)

{

	enum { PEX811X, PI7C9X110 };

	enum { PEX811X, PI7C9X110, XIO2001 };

	static const struct pci_device_id bridge_ids[] = {

		{ PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X },

		{ PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X },

		{ PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 },

		{ PCI_VDEVICE(TI, 0x8240), .driver_data = XIO2001 },

		{ }

	};

	struct pci_dev *bridge;
@@ -357,6 +358,14 @@ static void configure_pcie_bridge(struct pci_dev *pci) 
		tmp |= 1;	/* park the PCI arbiter to the sound chip */

		pci_write_config_dword(bridge, 0x40, tmp);

		break;



	case XIO2001: /* Texas Instruments XIO2001 PCIe/PCI bridge */

		pci_read_config_dword(bridge, 0xe8, &tmp);

		tmp &= ~0xf;	/* request length limit: 64 bytes */

		tmp &= ~(0xf << 8);

		tmp |= 1 << 8;	/* request count limit: one buffer */

		pci_write_config_dword(bridge, 0xe8, tmp);

		break;

	}

}