47c167b757
The unbind function needs to retrieve a vc4_hdmi structure pointer through the struct device that we're given since we want to support multiple HDMI controllers. However, our optional ASoC support doesn't make that trivial since it will overwrite the device drvdata if we use it, but obviously won't if we don't use it. Let's make sure the fields are at the proper offset to be able to cast between the snd_soc_card structure and the vc4_hdmi structure transparently so we can support both cases. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://patchwork.freedesktop.org/patch/msgid/717082cba06b5c06280f26c56c08aee512365ed3.1599120059.git-series.maxime@cerno.tech
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 Restructured Text 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.