Author: stepan
Date: 2007-02-03 16:23:34 +0100 (Sat, 03 Feb 2007)
New Revision: 2548
Modified:
trunk/LinuxBIOSv2/src/southbridge/nvidia/mcp55/mcp55_smbus.h
Log:
Nvidia MCP55 uses CMD to send/receive bytes instead of DAT0,
that's the same as broadcom/bcm5785.
Signed-off-by: bxshi <[EMAIL PROTECTED]>
Acked-by: Stefan Reinauer <[EMAIL PROTECTED]>
Modified: trunk/LinuxBIOSv2/src/southbridge/nvidia/mcp55/mcp55_smbus.h
===================================================================
--- trunk/LinuxBIOSv2/src/southbridge/nvidia/mcp55/mcp55_smbus.h
2007-02-03 10:43:48 UTC (rev 2547)
+++ trunk/LinuxBIOSv2/src/southbridge/nvidia/mcp55/mcp55_smbus.h
2007-02-03 15:23:34 UTC (rev 2548)
@@ -80,9 +80,7 @@
/* 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 @@
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;
@@ -109,13 +107,14 @@
outb(val, smbus_io_base + SMBHSTDAT0);
smbus_delay();
+ /* set the command... */
+ outb(val, smbus_io_base + SMBHSTCMD);
+ smbus_delay();
+
/* set the device I'm talking too */
outb(((device & 0x7f) << 1) | 0, smbus_io_base + SMBXMITADD);
smbus_delay();
- outb(0, smbus_io_base + SMBHSTCMD);
- smbus_delay();
-
/* set up for a byte data write */
outb(0x04, smbus_io_base + SMBHSTPRTCL);
smbus_delay();
--
linuxbios mailing list
linuxbios@linuxbios.org
http://www.openbios.org/mailman/listinfo/linuxbios
