Merge remote-tracking branch 'cogent/v2.23.1' into sandbox/kingfisher_v2.23.1.20180427

Signed-off-by: Harunobu Kurokawa <harunobu.kurokawa.dn@renesas.com>

 Conflicts:
	meta-rcar-gen3-adas/conf/layer.conf
	meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/ulcb.cfg
	meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas_4.9.bbappend
	meta-rcar-gen3-adas/recipes-multimedia/pulseaudio/pulseaudio_8.0.bbappend

Change-Id: Ib0345634b8bec6a85357152138355d8f932bafc0

1 files changed, 66 insertions, 0 deletions

diff --git a/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0085-spi-Document-SPI-slave-controller-support.patch b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0085-spi-Document-SPI-slave-controller-support.patch
new file mode 100644
index 0000000..57436d2
--- /dev/null
+++ b/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0085-spi-Document-SPI-slave-controller-support.patch
@@ -0,0 +1,66 @@
+From 0be2c71f293e8c8423e5378cc73f71e10205ad54 Mon Sep 17 00:00:00 2001
+From: Geert Uytterhoeven <geert+renesas@glider.be>
+Date: Thu, 8 Sep 2016 15:01:48 +0200
+Subject: [PATCH 3/7] spi: Document SPI slave controller support
+
+Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
+---
+ Documentation/spi/spi-summary |   27 ++++++++++++++++++++-------
+ 1 file changed, 20 insertions(+), 7 deletions(-)
+
+diff --git a/Documentation/spi/spi-summary b/Documentation/spi/spi-summary
+index d1824b3..1721c1b 100644
+--- a/Documentation/spi/spi-summary
++++ b/Documentation/spi/spi-summary
+@@ -62,8 +62,8 @@ chips described as using "three wire" signaling: SCK, data, nCSx.
+ (That data line is sometimes called MOMI or SISO.)
+ 
+ Microcontrollers often support both master and slave sides of the SPI
+-protocol.  This document (and Linux) currently only supports the master
+-side of SPI interactions.
++protocol.  This document (and Linux) supports both the master and slave
++sides of SPI interactions.
+ 
+ 
+ Who uses it?  On what kinds of systems?
+@@ -154,9 +154,8 @@ control audio interfaces, present touchscreen sensors as input interfaces,
+ or monitor temperature and voltage levels during industrial processing.
+ And those might all be sharing the same controller driver.
+ 
+-A "struct spi_device" encapsulates the master-side interface between
+-those two types of driver.  At this writing, Linux has no slave side
+-programming interface.
++A "struct spi_device" encapsulates the controller-side interface between
++those two types of drivers.
+ 
+ There is a minimal core of SPI programming interfaces, focussing on
+ using the driver model to connect controller and protocol drivers using
+@@ -177,10 +176,24 @@ shows up in sysfs in several locations:
+    /sys/bus/spi/drivers/D ... driver for one or more spi*.* devices
+ 
+    /sys/class/spi_master/spiB ... symlink (or actual device node) to
+-	a logical node which could hold class related state for the
+-	controller managing bus "B".  All spiB.* devices share one
++	a logical node which could hold class related state for the SPI
++	master controller managing bus "B".  All spiB.* devices share one
+ 	physical SPI bus segment, with SCLK, MOSI, and MISO.
+ 
++   /sys/devices/.../CTLR/slave ... virtual file for (un)registering the
++	slave device for an SPI slave controller.
++	Writing the driver name of an SPI slave handler to this file
++	registers the slave device; writing "(null)" unregisters the slave
++	device.
++	Reading from this file shows the name of the slave device ("(null)"
++	if not registered).
++
++   /sys/class/spi_slave/spiB ... symlink (or actual device node) to
++	a logical node which could hold class related state for the SPI
++	slave controller on bus "B".  When registered, a single spiB.*
++	device is present here, possible sharing the physical SPI bus
++	segment with other SPI slave devices.
++
+ Note that the actual location of the controller's class state depends
+ on whether you enabled CONFIG_SYSFS_DEPRECATED or not.  At this time,
+ the only class-specific state is the bus number ("B" in "spiB"), so
+-- 
+1.7.10.4