Merge tag 'spi-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi Updates from Mark Brown:
 "A busy release for both cleanups and new drivers this time along with
  further factoring out of replicated code into the core:

   - Provide support in the core for DMA mapping transfers - essentially
     all drivers weren't implementing this properly, now there's no
     excuse.
   - Dual and quad mode support for spidev.
   - Fix handling of cs_change in the generic implementation.
   - Remove the S3C_DMA code from the s3c64xx driver now that all the
     platforms using it have been converted to dmaengine.
   - Lots of improvements to the Renesas SPI controllers.
   - Drivers for Allwinner A10 and A31, Qualcomm QUP and Xylinx xtfpga.
   - Removal of the bitrotted ti-ssp driver"

* tag 'spi-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (199 commits)
  spi: Fix handling of cs_change in core implementation
  spi: bitbang: Make spi_bitbang_stop() return void
  spi: mpc52xx: Convert to use bits_per_word_mask
  spi: omap-100k: Fix memory leak
  spi: dw: Don't call kfree for memory allocated by devm_kzalloc
  spi: fsl-dspi: Fix memory leak
  spi: omap-uwire: add missing iounmap
  spi: clps711x: Convert to use master->max_speed_hz
  spi: clps711x: Enable driver compilation with COMPILE_TEST
  spi: omap-uwire: Remove full duplex check
  spi: Do not require a completion
  spi: topcliff-pch: Transform noisy message to dev_vdbg
  spi: coldfire-qspi: Simplify the code to set register bits for transfer speed
  spi: bcm63xx: Remove unused define for PFX
  spi: efm32: use $vendor,$device scheme for compatible string
  spi: clps711x: Remove <mach/hardware.h> dependency
  spi: topcliff-pch: Properly unregister platform devices on probe() error paths
  spi: fsl-espi: Remove unused bits_per_word variable in fsl_espi_bufs
  spi: altera: Remove the code to get unused platform_data
  spi: fsl-lib: Fix memory leak of pinfo
  ...

9 files changed, 269 insertions, 14 deletions

diff --git a/Documentation/devicetree/bindings/spi/efm32-spi.txt b/Documentation/devicetree/bindings/spi/efm32-spi.txt
index a590ca51be75..8f081c96a4fa 100644
--- a/Documentation/devicetree/bindings/spi/efm32-spi.txt
+++ b/Documentation/devicetree/bindings/spi/efm32-spi.txt
@@ -3,24 +3,24 @@
 Required properties:
 - #address-cells: see spi-bus.txt
 - #size-cells: see spi-bus.txt
-- compatible: should be "efm32,spi"
+- compatible: should be "energymicro,efm32-spi"
 - reg: Offset and length of the register set for the controller
 - interrupts: pair specifying rx and tx irq
 - clocks: phandle to the spi clock
 - cs-gpios: see spi-bus.txt
-- location: Value to write to the ROUTE register's LOCATION bitfield to configure the pinmux for the device, see datasheet for values.
+- efm32,location: Value to write to the ROUTE register's LOCATION bitfield to configure the pinmux for the device, see datasheet for values.
 
 Example:
 
 spi1: spi@0x4000c400 { /* USART1 */
 	#address-cells = <1>;
 	#size-cells = <0>;
-	compatible = "efm32,spi";
+	compatible = "energymicro,efm32-spi";
 	reg = <0x4000c400 0x400>;
 	interrupts = <15 16>;
 	clocks = <&cmu 20>;
 	cs-gpios = <&gpio 51 1>; // D3
-	location = <1>;
+	efm32,location = <1>;
 	status = "ok";
 
 	ks8851@0 {
diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-qup.txt b/Documentation/devicetree/bindings/spi/qcom,spi-qup.txt
new file mode 100644
index 000000000000..b82a268f1bd4
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/qcom,spi-qup.txt
@@ -0,0 +1,85 @@
+Qualcomm Universal Peripheral (QUP) Serial Peripheral Interface (SPI)
+
+The QUP core is an AHB slave that provides a common data path (an output FIFO
+and an input FIFO) for serial peripheral interface (SPI) mini-core.
+
+SPI in master mode supports up to 50MHz, up to four chip selects, programmable
+data path from 4 bits to 32 bits and numerous protocol variants.
+
+Required properties:
+- compatible:     Should contain "qcom,spi-qup-v2.1.1" or "qcom,spi-qup-v2.2.1"
+- reg:            Should contain base register location and length
+- interrupts:     Interrupt number used by this controller
+
+- clocks:         Should contain the core clock and the AHB clock.
+- clock-names:    Should be "core" for the core clock and "iface" for the
+                  AHB clock.
+
+- #address-cells: Number of cells required to define a chip select
+                  address on the SPI bus. Should be set to 1.
+- #size-cells:    Should be zero.
+
+Optional properties:
+- spi-max-frequency: Specifies maximum SPI clock frequency,
+                     Units - Hz. Definition as per
+                     Documentation/devicetree/bindings/spi/spi-bus.txt
+
+SPI slave nodes must be children of the SPI master node and can contain
+properties described in Documentation/devicetree/bindings/spi/spi-bus.txt
+
+Example:
+
+	spi_8: spi@f9964000 { /* BLSP2 QUP2 */
+
+		compatible = "qcom,spi-qup-v2";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0xf9964000 0x1000>;
+		interrupts = <0 102 0>;
+		spi-max-frequency = <19200000>;
+
+		clocks = <&gcc GCC_BLSP2_QUP2_SPI_APPS_CLK>, <&gcc GCC_BLSP2_AHB_CLK>;
+		clock-names = "core", "iface";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&spi8_default>;
+
+		device@0 {
+			compatible = "arm,pl022-dummy";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <0>; /* Chip select 0 */
+			spi-max-frequency = <19200000>;
+			spi-cpol;
+		};
+
+		device@1 {
+			compatible = "arm,pl022-dummy";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <1>; /* Chip select 1 */
+			spi-max-frequency = <9600000>;
+			spi-cpha;
+		};
+
+		device@2 {
+			compatible = "arm,pl022-dummy";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <2>; /* Chip select 2 */
+			spi-max-frequency = <19200000>;
+			spi-cpol;
+			spi-cpha;
+		};
+
+		device@3 {
+			compatible = "arm,pl022-dummy";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <3>; /* Chip select 3 */
+			spi-max-frequency = <19200000>;
+			spi-cpol;
+			spi-cpha;
+			spi-cs-high;
+		};
+	};
diff --git a/Documentation/devicetree/bindings/spi/sh-hspi.txt b/Documentation/devicetree/bindings/spi/sh-hspi.txt
index 30b57b1c8a13..319bad4af875 100644
--- a/Documentation/devicetree/bindings/spi/sh-hspi.txt
+++ b/Documentation/devicetree/bindings/spi/sh-hspi.txt
@@ -1,7 +1,29 @@
 Renesas HSPI.
 
 Required properties:
-- compatible : 	"renesas,hspi"
-- reg : Offset and length of the register set for the device
-- interrupts : interrupt line used by HSPI
+- compatible       : "renesas,hspi-<soctype>", "renesas,hspi" as fallback.
+		     Examples with soctypes are:
+		       - "renesas,hspi-r8a7778" (R-Car M1)
+		       - "renesas,hspi-r8a7779" (R-Car H1)
+- reg              : Offset and length of the register set for the device
+- interrupt-parent : The phandle for the interrupt controller that
+		     services interrupts for this device
+- interrupts       : Interrupt specifier
+- #address-cells   : Must be <1>
+- #size-cells      : Must be <0>
+
+Pinctrl properties might be needed, too.  See
+Documentation/devicetree/bindings/pinctrl/renesas,*.
+
+Example:
+
+	hspi0: spi@fffc7000 {
+		compatible = "renesas,hspi-r8a7778", "renesas,hspi";
+		reg = <0xfffc7000 0x18>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 63 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
 
diff --git a/Documentation/devicetree/bindings/spi/sh-msiof.txt b/Documentation/devicetree/bindings/spi/sh-msiof.txt
index e6222106ca36..f24baf3b6cc1 100644
--- a/Documentation/devicetree/bindings/spi/sh-msiof.txt
+++ b/Documentation/devicetree/bindings/spi/sh-msiof.txt
@@ -1,12 +1,40 @@
 Renesas MSIOF spi controller
 
 Required properties:
-- compatible : 	"renesas,sh-msiof" for SuperH or
-		"renesas,sh-mobile-msiof" for SH Mobile series
-- reg : Offset and length of the register set for the device
-- interrupts : interrupt line used by MSIOF
+- compatible           : "renesas,msiof-<soctype>" for SoCs,
+			 "renesas,sh-msiof" for SuperH, or
+			 "renesas,sh-mobile-msiof" for SH Mobile series.
+			 Examples with soctypes are:
+			 "renesas,msiof-r8a7790" (R-Car H2)
+			 "renesas,msiof-r8a7791" (R-Car M2)
+- reg                  : Offset and length of the register set for the device
+- interrupt-parent     : The phandle for the interrupt controller that
+			 services interrupts for this device
+- interrupts           : Interrupt specifier
+- #address-cells       : Must be <1>
+- #size-cells          : Must be <0>
 
 Optional properties:
-- num-cs		: total number of chip-selects
-- renesas,tx-fifo-size	: Overrides the default tx fifo size given in words
-- renesas,rx-fifo-size	: Overrides the default rx fifo size given in words
+- clocks               : Must contain a reference to the functional clock.
+- num-cs               : Total number of chip-selects (default is 1)
+
+Optional properties, deprecated for soctype-specific bindings:
+- renesas,tx-fifo-size : Overrides the default tx fifo size given in words
+			 (default is 64)
+- renesas,rx-fifo-size : Overrides the default rx fifo size given in words
+			 (default is 64, or 256 on R-Car H2 and M2)
+
+Pinctrl properties might be needed, too.  See
+Documentation/devicetree/bindings/pinctrl/renesas,*.
+
+Example:
+
+	msiof0: spi@e6e20000 {
+		compatible = "renesas,msiof-r8a7791";
+		reg = <0 0xe6e20000 0 0x0064>;
+		interrupts = <0 156 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp0_clks R8A7791_CLK_MSIOF0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt b/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
index a1fb3035a42b..5376de40f10b 100644
--- a/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
+++ b/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
@@ -10,6 +10,7 @@ Required properties:
 - pinctrl-names: must contain a "default" entry.
 - spi-num-chipselects : the number of the chipselect signals.
 - bus-num : the slave chip chipselect signal number.
+- big-endian : if DSPI modudle is big endian, the bool will be set in node.
 Example:
 
 dspi0@4002c000 {
@@ -24,6 +25,7 @@ dspi0@4002c000 {
 	bus-num = <0>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_dspi0_1>;
+	big-endian;
 	status = "okay";
 
 	sflash: at26df081a@0 {
diff --git a/Documentation/devicetree/bindings/spi/spi-rspi.txt b/Documentation/devicetree/bindings/spi/spi-rspi.txt
new file mode 100644
index 000000000000..d57d82a74054
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-rspi.txt
@@ -0,0 +1,61 @@
+Device tree configuration for Renesas RSPI/QSPI driver
+
+Required properties:
+- compatible       : For Renesas Serial Peripheral Interface on legacy SH:
+		     "renesas,rspi-<soctype>", "renesas,rspi" as fallback.
+		     For Renesas Serial Peripheral Interface on RZ/A1H:
+		     "renesas,rspi-<soctype>", "renesas,rspi-rz" as fallback.
+		     For Quad Serial Peripheral Interface on R-Car Gen2:
+		     "renesas,qspi-<soctype>", "renesas,qspi" as fallback.
+		     Examples with soctypes are:
+		        - "renesas,rspi-sh7757" (SH)
+			- "renesas,rspi-r7s72100" (RZ/A1H)
+			- "renesas,qspi-r8a7790" (R-Car H2)
+			- "renesas,qspi-r8a7791" (R-Car M2)
+- reg              : Address start and address range size of the device
+- interrupts       : A list of interrupt-specifiers, one for each entry in
+		     interrupt-names.
+		     If interrupt-names is not present, an interrupt specifier
+		     for a single muxed interrupt.
+- interrupt-names  : A list of interrupt names. Should contain (if present):
+		       - "error" for SPEI,
+		       - "rx" for SPRI,
+		       - "tx" to SPTI,
+		       - "mux" for a single muxed interrupt.
+- interrupt-parent : The phandle for the interrupt controller that
+		     services interrupts for this device.
+- num-cs	   : Number of chip selects. Some RSPI cores have more than 1.
+- #address-cells   : Must be <1>
+- #size-cells      : Must be <0>
+
+Optional properties:
+- clocks           : Must contain a reference to the functional clock.
+
+Pinctrl properties might be needed, too.  See
+Documentation/devicetree/bindings/pinctrl/renesas,*.
+
+Examples:
+
+	spi0: spi@e800c800 {
+		compatible = "renesas,rspi-r7s72100", "renesas,rspi-rz";
+		reg = <0xe800c800 0x24>;
+		interrupts = <0 238 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 239 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 240 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "error", "rx", "tx";
+		interrupt-parent = <&gic>;
+		num-cs = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
+	spi: spi@e6b10000 {
+		compatible = "renesas,qspi-r8a7791", "renesas,qspi";
+		reg = <0 0xe6b10000 0 0x2c>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp9_clks R8A7791_CLK_QSPI_MOD>;
+		num-cs = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
diff --git a/Documentation/devicetree/bindings/spi/spi-sun4i.txt b/Documentation/devicetree/bindings/spi/spi-sun4i.txt
new file mode 100644
index 000000000000..de827f5a301e
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-sun4i.txt
@@ -0,0 +1,24 @@
+Allwinner A10 SPI controller
+
+Required properties:
+- compatible: Should be "allwinner,sun4-a10-spi".
+- reg: Should contain register location and length.
+- interrupts: Should contain interrupt.
+- clocks: phandle to the clocks feeding the SPI controller. Two are
+          needed:
+  - "ahb": the gated AHB parent clock
+  - "mod": the parent module clock
+- clock-names: Must contain the clock names described just above
+
+Example:
+
+spi1: spi@01c06000 {
+	compatible = "allwinner,sun4i-a10-spi";
+	reg = <0x01c06000 0x1000>;
+	interrupts = <11>;
+	clocks = <&ahb_gates 21>, <&spi1_clk>;
+	clock-names = "ahb", "mod";
+	status = "disabled";
+	#address-cells = <1>;
+	#size-cells = <0>;
+};
diff --git a/Documentation/devicetree/bindings/spi/spi-sun6i.txt b/Documentation/devicetree/bindings/spi/spi-sun6i.txt
new file mode 100644
index 000000000000..21de73db6a05
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-sun6i.txt
@@ -0,0 +1,24 @@
+Allwinner A31 SPI controller
+
+Required properties:
+- compatible: Should be "allwinner,sun6i-a31-spi".
+- reg: Should contain register location and length.
+- interrupts: Should contain interrupt.
+- clocks: phandle to the clocks feeding the SPI controller. Two are
+          needed:
+  - "ahb": the gated AHB parent clock
+  - "mod": the parent module clock
+- clock-names: Must contain the clock names described just above
+- resets: phandle to the reset controller asserting this device in
+          reset
+
+Example:
+
+spi1: spi@01c69000 {
+	compatible = "allwinner,sun6i-a31-spi";
+	reg = <0x01c69000 0x1000>;
+	interrupts = <0 66 4>;
+	clocks = <&ahb1_gates 21>, <&spi1_clk>;
+	clock-names = "ahb", "mod";
+	resets = <&ahb1_rst 21>;
+};
diff --git a/Documentation/devicetree/bindings/spi/spi-xtensa-xtfpga.txt b/Documentation/devicetree/bindings/spi/spi-xtensa-xtfpga.txt
new file mode 100644
index 000000000000..b6ebe2bc7041
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-xtensa-xtfpga.txt
@@ -0,0 +1,9 @@
+Cadence Xtensa XTFPGA platform SPI controller.
+
+This simple SPI master controller is built into xtfpga bitstreams and is used
+to control daughterboard audio codec.
+
+Required properties:
+- compatible: should be "cdns,xtfpga-spi".
+- reg: physical base address of the controller and length of memory mapped
+  region.