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| author | Clemens Ladisch <clemens@ladisch.de> | 2015-01-16 22:15:43 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-01-16 22:44:36 +0100 |
| commit | a5a335336715d8648ffb1b105ea625790b9d984e (patch) | |
| tree | b11b87614b3137b89f6eb7deea831b5557601509 /sound/pci | |
| parent | 0902fbb9ccf7e3be67b9774b0d5f096da44e7c65 (diff) | |
| download | linux-a5a335336715d8648ffb1b105ea625790b9d984e.tar.bz2 | |
ALSA: oxygen: add XIO2001 initialization
Configure the XIO2001 bridge on PCI Express cards so that it does less
needless prefetching.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/oxygen/oxygen_lib.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c index ab47c1ca21c4..ffff3b25fd73 100644 --- a/sound/pci/oxygen/oxygen_lib.c +++ b/sound/pci/oxygen/oxygen_lib.c @@ -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; } } |