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tidss_crtc.c calls dispc_vp_prepare() and dispc_vp_enable() in that order, next to each other. dispc_vp_prepare() does preparations for enabling the crtc, by writing some registers, and dispc_vp_enable() does more preparations. As the last thing, dispc_vp_enable() enables the CRTC by writing the enable bit. There might have been a reason at some point in the history for this split, but I can't find any point to it. They also do a bit of overlapping work: both call dispc_vp_find_bus_fmt(). They could as well be a single function. But instead of combining them, this patch moves everything from dispc_vp_enable() to dispc_vp_prepare(), except the actual CRTC enable bit write. The reason for this is that unlike all the preparatory register writes, CRTC enable has an immediate effect, starting the timing generator and the CRTC as a whole. Thus it may be important to time the enable just right (as we do in the next patch). No functional changes. Reviewed-by: Devarsh Thakkar <devarsht@ti.com> Link: https://patch.msgid.link/20250905-tidss-fix-timestamp-v1-1-c2aedf31e2c9@ideasonboard.com Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
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.