diff options
| author | bxshi <bingxunshi@gmail.com> | 2007-02-03 15:23:34 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2007-02-03 15:23:34 +0000 |
| commit | c5708d19fd3fc00df9f1cd18a9db93742acc70df (patch) | |
| tree | 4364ac7b7e46bb163bd76959b479082847025c4a /src/southbridge/nvidia | |
| parent | de7f81f48a35cf09eb661e3da3a92b35d3c61aee (diff) | |
Nvidia MCP55 uses CMD to send/receive bytes instead of DAT0,
that's the same as broadcom/bcm5785.
Signed-off-by: bxshi <bingxunshi@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2548 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/southbridge/nvidia')
| -rw-r--r-- | src/southbridge/nvidia/mcp55/mcp55_smbus.h | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/src/southbridge/nvidia/mcp55/mcp55_smbus.h b/src/southbridge/nvidia/mcp55/mcp55_smbus.h index 9896b7ba4e..db3bd558a1 100644 --- a/src/southbridge/nvidia/mcp55/mcp55_smbus.h +++ b/src/southbridge/nvidia/mcp55/mcp55_smbus.h @@ -80,9 +80,7 @@ static int do_smbus_recv_byte(unsigned smbus_io_base, unsigned device) /* set the device I'm talking too */ outb(((device & 0x7f) << 1)|1 , smbus_io_base + SMBXMITADD); smbus_delay(); - /* set the command/address... */ - outb(0, smbus_io_base + SMBHSTCMD); - smbus_delay(); + /* byte data recv */ outb(0x05, smbus_io_base + SMBHSTPRTCL); smbus_delay(); @@ -95,7 +93,7 @@ static int do_smbus_recv_byte(unsigned smbus_io_base, unsigned device) global_status_register = inb(smbus_io_base + SMBHSTSTAT) & 0x80; /* lose check */ /* read results of transaction */ - byte = inb(smbus_io_base + SMBHSTDAT0); + byte = inb(smbus_io_base + SMBHSTCMD); if (global_status_register != 0x80) { // lose check, otherwise it should be 0 return -1; @@ -109,11 +107,12 @@ static int do_smbus_send_byte(unsigned smbus_io_base, unsigned device, unsigned outb(val, smbus_io_base + SMBHSTDAT0); smbus_delay(); - /* set the device I'm talking too */ - outb(((device & 0x7f) << 1) | 0, smbus_io_base + SMBXMITADD); + /* set the command... */ + outb(val, smbus_io_base + SMBHSTCMD); smbus_delay(); - outb(0, smbus_io_base + SMBHSTCMD); + /* set the device I'm talking too */ + outb(((device & 0x7f) << 1) | 0, smbus_io_base + SMBXMITADD); smbus_delay(); /* set up for a byte data write */ |