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Create a SoC folder for the ASPEED parts and place the misc drivers
currently present into this folder. These drivers are not generic part
drivers, but rather only apply to the ASPEED SoCs.
Signed-off-by: Patrick Venture <venture@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Provides the data bytes snooped over the LPC snoop bus to userspace
as a (blocking) misc character device.
Bytes output from the host using LPC I/O transactions to the snooped port
can be watched or retrieved from the character device using a simple
command like this:
~# od -w1 -A n -t x1 /dev/aspeed-lpc-snoop0
10
de
ad
c0
ff
ee
Signed-off-by: Robert Lippert <rlippert@google.com>
Signed-off-by: Patrick Venture <venture@google.com>
Signed-off-by: Benjamin Fair <benjaminfair@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This driver can be used on the aspeed ast2400 with minor
modifications.
Tested: ast2400 on quanta-q71l
Signed-off-by: Patrick Venture <venture@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This driver enables the LPC snoop hardware on the ASPEED BMC
which generates an interrupt upon every write to an I/O port
by the host.
This is typically used to monitor BIOS boot progress by listening
to well-known debug port 80h.
The functionality in this commit just saves all snooped values
to a circular 2K buffer in the kernel, subsequent commits can
act on the values to do things with them.
Signed-off-by: Robert Lippert <rlippert@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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