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Filename Latest commit message Latest commit date
Linus Walleij 2922d1cc16
spi: gpio: Add SPI_MASTER_GPIO_SS flag
The GPIO SPI master has some code in its local CS
callback to set the initial sck GPIO value. This was
lost in the commit converting it to use SPI core
GPIO handling as this callback isn't called if the
internal GPIO handling is active.

Add the special SPI_MASTER_GPIO_SS to ascertain it
gets called anyway so we get the initial SCK setting
right. There is some platform provided GPIO handling
there as well but this will be skipped as the cs_gpios
will be NULL.

My test targets seem not to care about the initial
SCK value so I am uncertain if this is a regression,
but to preserve the previous semantic we better do
this.

Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Fixes: 249e2632dc ("spi: gpio: Don't request CS GPIO in DT use-case")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20190716204651.7743-1-linus.walleij@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-07-17 18:51:21 +01:00
arch s390 updates for 5.2-rc4 2019-06-08 13:12:54 -07:00
block
certs
crypto SPDX update for 5.2-rc4 2019-06-08 12:52:42 -07:00
Documentation spi: dt-bindings: spi-controller: remove unnecessary 'maxItems: 1' from reg 2019-07-10 16:31:26 +01:00
drivers spi: gpio: Add SPI_MASTER_GPIO_SS flag 2019-07-17 18:51:21 +01:00
fs A change to call iput() asynchronously to avoid a possible deadlock 2019-06-08 15:57:35 -07:00
include spi: Add a prototype for exported spi_set_cs_timing() 2019-06-17 13:49:56 +01:00
init Char/Misc driver fixes for 5.2-rc4 2019-06-08 12:50:36 -07:00
ipc
kernel SPDX update for 5.2-rc4 2019-06-08 12:52:42 -07:00
lib SPDX update for 5.2-rc4 2019-06-08 12:52:42 -07:00
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scripts SPDX update for 5.2-rc4 2019-06-08 12:52:42 -07:00
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MAINTAINERS Linux 5.2-rc4 2019-06-10 18:52:53 +01:00
Makefile Linux 5.2-rc4 2019-06-08 20:24:46 -07:00
README

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.