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path: root/drivers/watchdog/sp5100_tco.c
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Diffstat (limited to 'drivers/watchdog/sp5100_tco.c')
-rw-r--r--drivers/watchdog/sp5100_tco.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/drivers/watchdog/sp5100_tco.c b/drivers/watchdog/sp5100_tco.c
index 0ccadb44b609..6467b91f2245 100644
--- a/drivers/watchdog/sp5100_tco.c
+++ b/drivers/watchdog/sp5100_tco.c
@@ -335,21 +335,24 @@ static unsigned char sp5100_tco_setupdevice(void)
if (!sp5100_tco_pci)
return 0;
- pr_info("PCI Revision ID: 0x%x\n", sp5100_tco_pci->revision);
+ pr_info("PCI Vendor ID: 0x%x, Device ID: 0x%x, Revision ID: 0x%x\n",
+ sp5100_tco_pci->vendor, sp5100_tco_pci->device,
+ sp5100_tco_pci->revision);
/*
* Determine type of southbridge chipset.
*/
- if (sp5100_tco_pci->revision >= 0x40) {
- dev_name = SB800_DEVNAME;
- index_reg = SB800_IO_PM_INDEX_REG;
- data_reg = SB800_IO_PM_DATA_REG;
- base_addr = SB800_PM_WATCHDOG_BASE;
- } else {
+ if (sp5100_tco_pci->device == PCI_DEVICE_ID_ATI_SBX00_SMBUS &&
+ sp5100_tco_pci->revision < 0x40) {
dev_name = SP5100_DEVNAME;
index_reg = SP5100_IO_PM_INDEX_REG;
data_reg = SP5100_IO_PM_DATA_REG;
base_addr = SP5100_PM_WATCHDOG_BASE;
+ } else {
+ dev_name = SB800_DEVNAME;
+ index_reg = SB800_IO_PM_INDEX_REG;
+ data_reg = SB800_IO_PM_DATA_REG;
+ base_addr = SB800_PM_WATCHDOG_BASE;
}
/* Request the IO ports used by this driver */
@@ -385,7 +388,12 @@ static unsigned char sp5100_tco_setupdevice(void)
* Secondly, Find the watchdog timer MMIO address
* from SBResource_MMIO register.
*/
- if (sp5100_tco_pci->revision >= 0x40) {
+ if (sp5100_tco_pci->device == PCI_DEVICE_ID_ATI_SBX00_SMBUS &&
+ sp5100_tco_pci->revision < 0x40) {
+ /* Read SBResource_MMIO from PCI config(PCI_Reg: 9Ch) */
+ pci_read_config_dword(sp5100_tco_pci,
+ SP5100_SB_RESOURCE_MMIO_BASE, &val);
+ } else {
/* Read SBResource_MMIO from AcpiMmioEn(PM_Reg: 24h) */
outb(SB800_PM_ACPI_MMIO_EN+3, SB800_IO_PM_INDEX_REG);
val = inb(SB800_IO_PM_DATA_REG);
@@ -395,10 +403,6 @@ static unsigned char sp5100_tco_setupdevice(void)
val = val << 8 | inb(SB800_IO_PM_DATA_REG);
outb(SB800_PM_ACPI_MMIO_EN+0, SB800_IO_PM_INDEX_REG);
val = val << 8 | inb(SB800_IO_PM_DATA_REG);
- } else {
- /* Read SBResource_MMIO from PCI config(PCI_Reg: 9Ch) */
- pci_read_config_dword(sp5100_tco_pci,
- SP5100_SB_RESOURCE_MMIO_BASE, &val);
}
/* The SBResource_MMIO is enabled and mapped memory space? */