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Introduce some helpers for handling the signalling between VIA and Cuda. This abstraction will be used to add support for Egret devices, which utilize slightly different signalling. Don't invert the sense of the Cuda's active-low signals when storing them in the 'status' variable. Just assert, negate and test those signals using the helpers. The state machine does not need to test its own output signals to figure out what to do next: the next state depends on the Cuda's TREQ output. Just call the TREQ_asserted() helper function to test for that. Similarly, there is no need to store pin directions in the 'status' variable. That was only useful for debugging messages. Tested-by: Stan Johnson <userm57@yahoo.com> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.