diff options
Diffstat (limited to 'src/southbridge/intel/i82371eb/i82371eb_early_smbus.c')
| -rw-r--r-- | src/southbridge/intel/i82371eb/i82371eb_early_smbus.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/src/southbridge/intel/i82371eb/i82371eb_early_smbus.c b/src/southbridge/intel/i82371eb/i82371eb_early_smbus.c index 76ae9f50b2..0ae5667e86 100644 --- a/src/southbridge/intel/i82371eb/i82371eb_early_smbus.c +++ b/src/southbridge/intel/i82371eb/i82371eb_early_smbus.c @@ -18,28 +18,29 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -/* TODO: Implement smbus_write_byte(), smbus_recv_byte(), smbus_send_byte(). */ - #include <stdint.h> +#include <arch/io.h> +#include <arch/romcc_io.h> +#include <console/console.h> #include <device/pci_ids.h> +#include <device/pci_def.h> #include "i82371eb.h" #include "i82371eb_smbus.h" #define SMBUS_IO_BASE 0x0f00 -static void enable_smbus(void) +int smbus_read_byte(u8 device, u8 address); + +void enable_smbus(void) { device_t dev; u8 reg8; u16 reg16; - /* Check for SMBus/PM device PCI ID on the 82371AB/EB/MB. */ + /* Get the SMBus/PM device of the 82371AB/EB/MB. */ dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_SMB_ACPI), 0); - if (dev == PCI_DEV_INVALID) - die("SMBus/PM controller not found\n"); - /* Set the SMBus I/O base. */ pci_write_config32(dev, SMBBA, SMBUS_IO_BASE | 1); @@ -57,7 +58,7 @@ static void enable_smbus(void) outb(inb(SMBUS_IO_BASE + SMBHST_STATUS), SMBUS_IO_BASE + SMBHST_STATUS); } -static int smbus_read_byte(u8 device, u8 address) +int smbus_read_byte(u8 device, u8 address) { return do_smbus_read_byte(SMBUS_IO_BASE, device, address); } |