diff options
Diffstat (limited to 'sound/pci/oxygen/oxygen_lib.c')
| -rw-r--r-- | sound/pci/oxygen/oxygen_lib.c | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c index 7e93cf88443..d10cc6ee1a6 100644 --- a/sound/pci/oxygen/oxygen_lib.c +++ b/sound/pci/oxygen/oxygen_lib.c @@ -308,25 +308,31 @@ static void oxygen_restore_eeprom(struct oxygen *chip, } } -static void pci_bridge_magic(void) +static void configure_pcie_bridge(struct pci_dev *pci) { - struct pci_dev *pci = NULL; + enum { PI7C9X110 }; + static const struct pci_device_id bridge_ids[] = { + { PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 }, + { } + }; + struct pci_dev *bridge; + const struct pci_device_id *id; u32 tmp; - for (;;) { - /* If there is any Pericom PI7C9X110 PCI-E/PCI bridge ... */ - pci = pci_get_device(0x12d8, 0xe110, pci); - if (!pci) - break; - /* - * ... configure its secondary internal arbiter to park to - * the secondary port, instead of to the last master. - */ - if (!pci_read_config_dword(pci, 0x40, &tmp)) { - tmp |= 1; - pci_write_config_dword(pci, 0x40, tmp); - } - /* Why? Try asking C-Media. */ + if (!pci->bus || !pci->bus->self) + return; + bridge = pci->bus->self; + + id = pci_match_id(bridge_ids, bridge); + if (!id) + return; + + switch (id->driver_data) { + case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */ + pci_read_config_dword(bridge, 0x40, &tmp); + tmp |= 1; /* park the PCI arbiter to the sound chip */ + pci_write_config_dword(bridge, 0x40, tmp); + break; } } @@ -613,7 +619,7 @@ int oxygen_pci_probe(struct pci_dev *pci, int index, char *id, snd_card_set_dev(card, &pci->dev); card->private_free = oxygen_card_free; - pci_bridge_magic(); + configure_pcie_bridge(pci); oxygen_init(chip); chip->model.init(chip); |