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If the drm_plane has a source width that's greater than the max width supported by a SSPP (2560 pixels on 8x96), then we assign a 'r_hwpipe' to it in mdp5_plane_atomic_check(). TODO: There are a few scenarios where the hwpipe assignments aren't recommended by HW. For example, an assignment which results in a drm_plane to of two different types of hwpipes (say RGB0 on left and DMA1 on right) is not recommended. Also, hwpipes have a priority mapping, where the higher priority pipe needs to be staged on left LM, and the lower priority needs to be staged on the right LM. For example, the priority order for VIG pipes in decreasing order of priority is VIG0, VIG1, VIG2, and VIG3. So, VIG0 on left and VIG1 on right is a correct configuration, but VIG1 on left and VIG0 on right isn't. These scenarios are ignored for now for the sake of simplicity. Signed-off-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com> |
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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.