VC4: KMS/FKMS Fix weird hang with frozen display and spining cursor

Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt

@@ -74,8 +74,8 @@ Example:
 
 bcm2835_i2s: i2s@7e203000 {
 	compatible = "brcm,bcm2835-i2s";
-	reg = <	0x7e203000 0x20>,
-	      < 0x7e101098 0x02>;
+	reg = <	0x7e203000 0x24>,
+	      < 0x7e101098 0x08>;
 
 	dmas = <&dma 2>,
 	       <&dma 3>;

Documentation/devicetree/bindings/misc/brcm,bcm2835-smi-dev.txt

@@ -0,0 +1,17 @@
+* Broadcom BCM2835 SMI character device driver.
+
+SMI or secondary memory interface is a peripheral specific to certain Broadcom
+SOCs, and is helpful for talking to things like parallel-interface displays
+and NAND flashes (in fact, most things with a parallel register interface).
+
+This driver adds a character device which provides a user-space interface to
+an instance of the SMI driver.
+
+Required properties:
+- compatible: "brcm,bcm2835-smi-dev"
+- smi_handle: a phandle to the smi node.
+
+Optional properties:
+- None.
+
+

Documentation/devicetree/bindings/misc/brcm,bcm2835-smi.txt

@@ -0,0 +1,48 @@
+* Broadcom BCM2835 SMI driver.
+
+SMI or secondary memory interface is a peripheral specific to certain Broadcom
+SOCs, and is helpful for talking to things like parallel-interface displays
+and NAND flashes (in fact, most things with a parallel register interface).
+
+Required properties:
+- compatible: "brcm,bcm2835-smi"
+- reg: Should contain location and length of SMI registers and SMI clkman regs
+- interrupts: *the* SMI interrupt.
+- pinctrl-names: should be "default".
+- pinctrl-0: the phandle of the gpio pin node.
+- brcm,smi-clock-source: the clock source for clkman
+- brcm,smi-clock-divisor: the integer clock divisor for clkman
+- dmas: the dma controller phandle and the DREQ number (4 on a 2835)
+- dma-names: the name used by the driver to request its channel.
+  Should be "rx-tx".
+
+Optional properties:
+- None.
+
+Examples:
+
+8 data pin configuration:
+
+smi: smi@7e600000 {
+	compatible = "brcm,bcm2835-smi";
+	reg = <0x7e600000 0x44>, <0x7e1010b0 0x8>;
+	interrupts = <2 16>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&smi_pins>;
+	brcm,smi-clock-source = <6>;
+	brcm,smi-clock-divisor = <4>;
+	dmas = <&dma 4>;
+	dma-names = "rx-tx";
+
+	status = "okay";
+};
+
+smi_pins: smi_pins {
+	brcm,pins = <2 3 4 5 6 7 8 9 10 11 12 13 14 15>;
+	/* Alt 1: SMI */
+	brcm,function = <5 5 5 5 5 5 5 5 5 5 5 5 5 5>;
+	/* /CS, /WE and /OE are pulled high, as they are
+	   generally active low signals */
+	brcm,pull = <2 2 2 2 2 2 0 0 0 0 0 0 0 0>;
+};
+

Documentation/devicetree/bindings/mtd/brcm,bcm2835-smi-nand.txt

@@ -0,0 +1,42 @@
+* BCM2835 SMI NAND flash
+
+This driver is a shim between the BCM2835 SMI driver (SMI is a peripheral for
+talking to parallel register interfaces) and Linux's MTD layer.
+
+Required properties:
+- compatible: "brcm,bcm2835-smi-nand"
+- status: "okay"
+
+Optional properties:
+- partition@n, where n is an integer from a consecutive sequence starting at 0
+	- Difficult to store partition table on NAND device - normally put it
+	in the source code, kernel bootparams, or device tree (the best way!)
+	- Sub-properties:
+		- label: the partition name, as shown by mtdinfo /dev/mtd*
+		- reg: the size and offset of this partition.
+		- (optional) read-only: an empty property flagging as read only
+
+Example:
+
+nand: flash@0 {
+	compatible = "brcm,bcm2835-smi-nand";
+	status = "okay";
+
+	partition@0 {
+		label = "stage2";
+		// 128k
+		reg = <0 0x20000>;
+		read-only;
+	};
+	partition@1 {
+		label = "firmware";
+		// 16M
+		reg = <0x20000 0x1000000>;
+		read-only;
+	};
+	partition@2 {
+		label = "root";
+		// 2G
+		reg = <0x1020000 0x80000000>;
+	};
+};

Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.txt

@@ -16,8 +16,8 @@ Example:
 
 bcm2835_i2s: i2s@7e203000 {
 	compatible = "brcm,bcm2835-i2s";
-	reg = <0x7e203000 0x20>,
-	      <0x7e101098 0x02>;
+	reg = <0x7e203000 0x24>,
+	      <0x7e101098 0x08>;
 
 	dmas = <&dma 2>,
 	       <&dma 3>;

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -43,6 +43,7 @@ avago	Avago Technologies
 avic	Shanghai AVIC Optoelectronics Co., Ltd.
 axentia	Axentia Technologies AB
 axis	Axis Communications AB
+blokaslabs	Vilniaus Blokas UAB
 boe	BOE Technology Group Co., Ltd.
 bosch	Bosch Sensortec GmbH
 boundary	Boundary Devices Inc.

Documentation/devicetree/configfs-overlays.txt

@@ -0,0 +1,31 @@
+Howto use the configfs overlay interface.
+
+A device-tree configfs entry is created in /config/device-tree/overlays
+and and it is manipulated using standard file system I/O.
+Note that this is a debug level interface, for use by developers and
+not necessarily something accessed by normal users due to the
+security implications of having direct access to the kernel's device tree.
+
+* To create an overlay you mkdir the directory:
+
+	# mkdir /config/device-tree/overlays/foo
+
+* Either you echo the overlay firmware file to the path property file.
+
+	# echo foo.dtbo >/config/device-tree/overlays/foo/path
+
+* Or you cat the contents of the overlay to the dtbo file
+
+	# cat foo.dtbo >/config/device-tree/overlays/foo/dtbo
+
+The overlay file will be applied, and devices will be created/destroyed
+as required.
+
+To remove it simply rmdir the directory.
+
+	# rmdir /config/device-tree/overlays/foo
+
+The rationalle of the dual interface (firmware & direct copy) is that each is
+better suited to different use patterns. The firmware interface is what's
+intended to be used by hardware managers in the kernel, while the copy interface
+make sense for developers (since it avoids problems with namespaces).

Documentation/video4linux/bcm2835-v4l2.txt

@@ -0,0 +1,60 @@
+
+BCM2835 (aka Raspberry Pi) V4L2 driver
+======================================
+
+1. Copyright
+============
+
+Copyright © 2013 Raspberry Pi (Trading) Ltd.
+
+2. License
+==========
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+3. Quick Start
+==============
+
+You need a version 1.0 or later of v4l2-ctl, available from:
+	git://git.linuxtv.org/v4l-utils.git
+
+$ sudo modprobe bcm2835-v4l2
+
+Turn on the overlay:
+
+$ v4l2-ctl --overlay=1
+
+Turn off the overlay:
+
+$ v4l2-ctl --overlay=0
+
+Set the capture format for video:
+
+$ v4l2-ctl  --set-fmt-video=width=1920,height=1088,pixelformat=4
+
+(Note: 1088 not 1080).
+
+Capture:
+
+$ v4l2-ctl --stream-mmap=3 --stream-count=100 --stream-to=somefile.h264
+
+Stills capture:
+
+$ v4l2-ctl  --set-fmt-video=width=2592,height=1944,pixelformat=3
+$ v4l2-ctl --stream-mmap=3 --stream-count=1 --stream-to=somefile.jpg
+
+List of available formats:
+
+$ v4l2-ctl --list-formats

arch/arm/Makefile

@@ -338,6 +338,8 @@ $(INSTALL_TARGETS):
 
 %.dtb: | scripts
 	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
+%.dtbo: | scripts
+	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 
 PHONY += dtbs dtbs_install
 

arch/arm/boot/.gitignore

@@ -3,4 +3,4 @@ zImage
 xipImage
 bootpImage
 uImage
-*.dtb
+*.dtb*

arch/arm/boot/dts/Makefile

@@ -1,5 +1,13 @@
 ifeq ($(CONFIG_OF),y)
 
+dtb-$(CONFIG_ARCH_BCM2835) += \
+	bcm2708-rpi-b.dtb \
+	bcm2708-rpi-b-plus.dtb \
+	bcm2708-rpi-cm.dtb \
+	bcm2709-rpi-2-b.dtb \
+	bcm2710-rpi-3-b.dtb \
+	bcm2710-rpi-cm3.dtb
+
 dtb-$(CONFIG_ARCH_ALPINE) += \
 	alpine-db.dtb
 dtb-$(CONFIG_MACH_ARTPEC6) += \
@@ -984,10 +992,21 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb
 dtb-$(CONFIG_ARCH_ASPEED) += aspeed-bmc-opp-palmetto.dtb \
 	aspeed-ast2500-evb.dtb
+
+targets += dtbs dtbs_install
+targets += $(dtb-y)
+
 endif
 
 dtstree		:= $(srctree)/$(src)
 dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
 
 always		:= $(dtb-y)
+subdir-y	:= overlays
 clean-files	:= *.dtb
+
+# Enable fixups to support overlays on BCM2835 platforms
+ifeq ($(CONFIG_ARCH_BCM2835),y)
+	DTC_FLAGS ?= -@ -H epapr
+	dts-dirs += overlays
+endif