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d30bb4b43e
There are three separate issues preventing color capture with S-Video on August VGB100 with the cx231xx driver (same vid/pid as OTG102): 1. `cx231xx_set_decoder_video_input` is called with a u32 passed as its third argument, yet this functions expects a u8 instead. Some information about the configuration of the video mux is lost in the conversion, so that ch2 and ch3 do not get set by `cx231xx_afe_set_input_mux` (expecting a u32 but being passed a u8). 2. The input pin for the chroma signal is not correctly specified in cx231xx-cards.c, which can be verified by looking at the inf file coming with the VGB100 and OTG102' drivers for Windows. The mistake in the cx231xx driver likely stems from a wrong comment in the same file, suggesting VIN1_2 for chroma, while VIN3_2 is actually used. 3. Even after fixing the two issues above, the captured stream remains essentially B&W (although acquiring some pale green shades, suggesting we're moving in the right direction). After tests with somewhat random changes, it was found that removing `CX25840_SVIDEO_ON` from the vmux configuration in cx231xx-cards.c results in a captured stream with the expected colors. Signed-off-by: Fabio Luongo <f.langufo.l@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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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.