3 Commits

Author	SHA1	Message	Date
Robert Lippert	3772e5da44	drivers/misc: Aspeed LPC snoop output using misc chardev ... 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>	2018-07-16 13:30:47 +02:00
Patrick Venture	2dee584bc9	drivers/misc: (aspeed-lpc-snoop): Add ast2400 to compat ... 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>	2017-07-17 17:23:16 +02:00
Robert Lippert	9f4f9ae81d	drivers/misc: add Aspeed LPC snoop driver ... 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>	2017-06-03 19:15:18 +09:00