0f0581b24b
This converts the Freescale SPI master driver to use GPIO descriptors for chip select handling. The Freescale (fsl) driver has a lot of quirks to look up "gpios" rather than "cs-gpios" from the device tree. After the prior patch that will make gpiolib return the GPIO descriptor for "gpios" in response to a request for "cs-gpios", this code can be cut down quite a bit. The driver has custom handling of chip select rather than using the core (which may be possible but not done in this patch) so it still needs to refer directly to spi->cs_gpiod to set the chip select. Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: NXP Linux Team <linux-imx@nxp.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20190804003539.985-1-linus.walleij@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
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.