diff options
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/amd/amd8111/amd8111_early_smbus.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/southbridge/amd/amd8111/amd8111_early_smbus.c b/src/southbridge/amd/amd8111/amd8111_early_smbus.c index 9f208f1222..d6edc34612 100644 --- a/src/southbridge/amd/amd8111/amd8111_early_smbus.c +++ b/src/southbridge/amd/amd8111/amd8111_early_smbus.c @@ -115,11 +115,10 @@ static int smbus_read_byte(unsigned device, unsigned address) static void smbus_write_byte(unsigned device, unsigned address, unsigned char val) { -#if 1 if (smbus_wait_until_ready() < 0) { return; } - +#if 0 /* setup transaction */ /* disable interrupts */ outw(inw(SMBUS_IO_BASE + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)), @@ -138,9 +137,23 @@ static void smbus_write_byte(unsigned device, unsigned address, unsigned char va /* start the command */ outw((inw(SMBUS_IO_BASE + SMBGCTL) | (1 << 3)), SMBUS_IO_BASE + SMBGCTL); +#else + /* by LYH */ + outb(0x37,SMBUS_IO_BASE + SMBGSTATUS); + /* set the device I'm talking too */ + outw(((device & 0x7f) << 1) | 0, SMBUS_IO_BASE + SMBHSTADDR); + + /* data to send */ + outb(val, SMBUS_IO_BASE + SMBHSTDAT); + + outb(address & 0xFF, SMBUS_IO_BASE + SMBHSTCMD); + + /* start the command */ + outb(0xa, SMBUS_IO_BASE + SMBGCTL); +#endif /* poll for transaction completion */ smbus_wait_until_done(); -#endif + return; } |