Merge tag 'char-misc-4.18-rc1' of git://git.kernel.org/pub/scm/linux/…

…kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the "big" char and misc driver patches for 4.18-rc1.

  It's not a lot of stuff here, but there are some highlights:

   - coreboot driver updates

   - soundwire driver updates

   - android binder updates

   - fpga big sync, mostly documentation

   - lots of minor driver updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (81 commits)
  vmw_balloon: fixing double free when batching mode is off
  MAINTAINERS: Add driver-api/fpga path
  fpga: clarify that unregister functions also free
  documentation: fpga: move fpga-region.txt to driver-api
  documentation: fpga: add bridge document to driver-api
  documentation: fpga: move fpga-mgr.txt to driver-api
  Documentation: fpga: move fpga overview to driver-api
  fpga: region: kernel-doc fixes
  fpga: bridge: kernel-doc fixes
  fpga: mgr: kernel-doc fixes
  fpga: use SPDX
  fpga: region: change api, add fpga_region_create/free
  fpga: bridge: change api, don't use drvdata
  fpga: manager: change api, don't use drvdata
  fpga: region: don't use drvdata in common fpga code
  Drivers: hv: vmbus: Removed an unnecessary cast from void *
  ver_linux: Drop redundant calls to system() to test if file is readable
  ver_linux: Move stderr redirection from function parameter to function body
  misc: IBM Virtual Management Channel Driver (VMC)
  rpmsg: Correct support for MODULE_DEVICE_TABLE()
  ...

Documentation/ABI/stable/sysfs-bus-vmbus

@@ -1,25 +1,25 @@
-What:		/sys/bus/vmbus/devices/vmbus_*/id
+What:		/sys/bus/vmbus/devices/<UUID>/id
 Date:		Jul 2009
 KernelVersion:	2.6.31
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The VMBus child_relid of the device's primary channel
 Users:		tools/hv/lsvmbus
 
-What:		/sys/bus/vmbus/devices/vmbus_*/class_id
+What:		/sys/bus/vmbus/devices/<UUID>/class_id
 Date:		Jul 2009
 KernelVersion:	2.6.31
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The VMBus interface type GUID of the device
 Users:		tools/hv/lsvmbus
 
-What:		/sys/bus/vmbus/devices/vmbus_*/device_id
+What:		/sys/bus/vmbus/devices/<UUID>/device_id
 Date:		Jul 2009
 KernelVersion:	2.6.31
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The VMBus interface instance GUID of the device
 Users:		tools/hv/lsvmbus
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channel_vp_mapping
+What:		/sys/bus/vmbus/devices/<UUID>/channel_vp_mapping
 Date:		Jul 2015
 KernelVersion:	4.2.0
 Contact:	K. Y. Srinivasan <[email protected]>
@@ -28,112 +28,112 @@ Description:	The mapping of which primary/sub channels are bound to which
 		Format: <channel's child_relid:the bound cpu's number>
 Users:		tools/hv/lsvmbus
 
-What:		/sys/bus/vmbus/devices/vmbus_*/device
+What:		/sys/bus/vmbus/devices/<UUID>/device
 Date:		Dec. 2015
 KernelVersion:	4.5
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The 16 bit device ID of the device
 Users:		tools/hv/lsvmbus and user level RDMA libraries
 
-What:		/sys/bus/vmbus/devices/vmbus_*/vendor
+What:		/sys/bus/vmbus/devices/<UUID>/vendor
 Date:		Dec. 2015
 KernelVersion:	4.5
 Contact:	K. Y. Srinivasan <[email protected]>
 Description:	The 16 bit vendor ID of the device
 Users:		tools/hv/lsvmbus and user level RDMA libraries
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Directory for per-channel information
 		NN is the VMBUS relid associtated with the channel.
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/cpu
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	VCPU (sub)channel is affinitized to
 Users:		tools/hv/lsvmbus and other debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/cpu
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	VCPU (sub)channel is affinitized to
 Users:		tools/hv/lsvmbus and other debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/in_mask
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/in_mask
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Host to guest channel interrupt mask
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/latency
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/latency
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Channel signaling latency
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/out_mask
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/out_mask
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Guest to host channel interrupt mask
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/pending
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/pending
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Channel interrupt pending state
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/read_avail
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/read_avail
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Bytes available to read
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/write_avail
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/write_avail
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Bytes available to write
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/events
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/events
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Number of times we have signaled the host
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/interrupts
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/interrupts
 Date:		September. 2017
 KernelVersion:	4.14
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Number of times we have taken an interrupt (incoming)
 Users:		Debugging tools
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/subchannel_id
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/subchannel_id
 Date:		January. 2018
 KernelVersion:	4.16
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Subchannel ID associated with VMBUS channel
 Users:		Debugging tools and userspace drivers
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/monitor_id
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/monitor_id
 Date:		January. 2018
 KernelVersion:	4.16
 Contact:	Stephen Hemminger <[email protected]>
 Description:	Monitor bit associated with channel
 Users:		Debugging tools and userspace drivers
 
-What:		/sys/bus/vmbus/devices/vmbus_*/channels/NN/ring
+What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/ring
 Date:		January. 2018
 KernelVersion:	4.16
 Contact:	Stephen Hemminger <[email protected]>

Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt

@@ -0,0 +1,29 @@
+Lattice MachXO2 Slave SPI FPGA Manager
+
+Lattice MachXO2 FPGAs support a method of loading the bitstream over
+'slave SPI' interface.
+
+See 'MachXO2ProgrammingandConfigurationUsageGuide.pdf' on www.latticesemi.com
+
+Required properties:
+- compatible: should contain "lattice,machxo2-slave-spi"
+- reg: spi chip select of the FPGA
+
+Example for full FPGA configuration:
+
+	fpga-region0 {
+		compatible = "fpga-region";
+		fpga-mgr = <&fpga_mgr_spi>;
+		#address-cells = <0x1>;
+		#size-cells = <0x1>;
+	};
+
+	spi1: spi@2000 {
+        ...
+
+		fpga_mgr_spi: fpga-mgr@0 {
+			compatible = "lattice,machxo2-slave-spi";
+			spi-max-frequency = <8000000>;
+			reg = <0>;
+		};
+	};

Documentation/devicetree/bindings/nvmem/zii,rave-sp-eeprom.txt

@@ -0,0 +1,40 @@
+Zodiac Inflight Innovations RAVE EEPROM Bindings
+
+RAVE SP EEPROM device is a "MFD cell" device exposing physical EEPROM
+attached to RAVE Supervisory Processor. It is expected that its Device
+Tree node is specified as a child of the node corresponding to the
+parent RAVE SP device (as documented in
+Documentation/devicetree/bindings/mfd/zii,rave-sp.txt)
+
+Required properties:
+
+- compatible: Should be "zii,rave-sp-eeprom"
+
+Optional properties:
+
+- zii,eeprom-name: Unique EEPROM identifier describing its function in the
+  system. Will be used as created NVMEM deivce's name.
+
+Data cells:
+
+Data cells are child nodes of eerpom node, bindings for which are
+documented in Documentation/bindings/nvmem/nvmem.txt
+
+Example:
+
+	rave-sp {
+		compatible = "zii,rave-sp-rdu1";
+		current-speed = <38400>;
+
+		eeprom@a4 {
+			compatible = "zii,rave-sp-eeprom";
+			reg = <0xa4 0x4000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			zii,eeprom-name = "main-eeprom";
+
+			wdt_timeout: wdt-timeout@81 {
+				reg = <0x81 2>;
+			};
+		};
+	}

Documentation/driver-api/fpga/fpga-bridge.rst

@@ -0,0 +1,49 @@
+FPGA Bridge
+===========
+
+API to implement a new FPGA bridge
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. kernel-doc:: include/linux/fpga/fpga-bridge.h
+   :functions: fpga_bridge
+
+.. kernel-doc:: include/linux/fpga/fpga-bridge.h
+   :functions: fpga_bridge_ops
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_create
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_free
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_register
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_unregister
+
+API to control an FPGA bridge
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+You probably won't need these directly.  FPGA regions should handle this.
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: of_fpga_bridge_get
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_get
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_put
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_get_to_list
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: of_fpga_bridge_get_to_list
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_enable
+
+.. kernel-doc:: drivers/fpga/fpga-bridge.c
+   :functions: fpga_bridge_disable