Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/ker…

…nel/git/wsa/linux

Pull i2c updates from Wolfram Sang:
 "Highlights from the I2C subsystem for 3.18:

   - new drivers for Axxia AM55xx, and Hisilicon hix5hd2 SoC.

   - designware driver gained AMD support, exynos gained exynos7 support

  The rest is usual driver stuff.  Hopefully no lowlights this time"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: i801: Add Device IDs for Intel Sunrise Point PCH
  i2c: hix5hd2: add i2c controller driver
  i2c-imx: Disable the clock on probe failure
  i2c: designware: Add support for AMD I2C controller
  i2c: designware: Rework probe() to get clock a bit later
  i2c: designware: Default to fast mode in case of ACPI
  i2c: axxia: Add I2C driver for AXM55xx
  i2c: exynos: add support for HSI2C module on Exynos7
  i2c: mxs: detect No Slave Ack on SELECT in PIO mode
  i2c: cros_ec: Remove EC_I2C_FLAG_10BIT
  i2c: cros-ec-tunnel: Add of match table
  i2c: rcar: remove sign-compare flaw
  i2c: ismt: Use minimum descriptor size
  i2c: imx: Add arbitration lost check
  i2c: rk3x: Remove unlikely() annotations
  i2c: rcar: check for no IRQ in rcar_i2c_irq()
  i2c: rcar: make rcar_i2c_prepare_msg() *void*
  i2c: rcar: simplify check for last message
  i2c: designware: add support of platform data to set I2C mode
  i2c: designware: add support of I2C standard mode

Documentation/devicetree/bindings/i2c/i2c-axxia.txt

@@ -0,0 +1,30 @@
+LSI Axxia I2C
+
+Required properties :
+- compatible : Must be "lsi,api2c"
+- reg : Offset and length of the register set for the device
+- interrupts : the interrupt specifier
+- #address-cells : Must be <1>;
+- #size-cells : Must be <0>;
+- clock-names : Must contain "i2c".
+- clocks: Must contain an entry for each name in clock-names. See the common
+  clock bindings.
+
+Optional properties :
+- clock-frequency : Desired I2C bus clock frequency in Hz. If not specified,
+  the default 100 kHz frequency will be used. As only Normal and Fast modes
+  are supported, possible values are 100000 and 400000.
+
+Example :
+
+i2c@02010084000 {
+	compatible = "lsi,api2c";
+	device_type = "i2c";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	reg = <0x20 0x10084000 0x00 0x1000>;
+	interrupts = <0 19 4>;
+	clocks = <&clk_per>;
+	clock-names = "i2c";
+	clock-frequency = <400000>;
+};

Documentation/devicetree/bindings/i2c/i2c-exynos5.txt

@@ -12,6 +12,8 @@ Required properties:
 				on Exynos5250 and Exynos5420 SoCs.
 	-> "samsung,exynos5260-hsi2c", for i2c compatible with HSI2C available
 				on Exynos5260 SoCs.
+	-> "samsung,exynos7-hsi2c", for i2c compatible with HSI2C available
+				on Exynos7 SoCs.
 
   - reg: physical base address of the controller and length of memory mapped
     region.

Documentation/devicetree/bindings/i2c/i2c-hix5hd2.txt

@@ -0,0 +1,24 @@
+I2C for Hisilicon hix5hd2 chipset platform
+
+Required properties:
+- compatible: Must be "hisilicon,hix5hd2-i2c"
+- reg: physical base address of the controller and length of memory mapped
+     region.
+- interrupts: interrupt number to the cpu.
+- #address-cells = <1>;
+- #size-cells = <0>;
+- clocks: phandles to input clocks.
+
+Optional properties:
+- clock-frequency: Desired I2C bus frequency in Hz, otherwise defaults to 100000
+- Child nodes conforming to i2c bus binding
+
+Examples:
+I2C0@f8b10000 {
+	compatible = "hisilicon,hix5hd2-i2c";
+	reg = <0xf8b10000 0x1000>;
+	interrupts = <0 38 4>;
+	clocks = <&clock HIX5HD2_I2C0_RST>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+}

Documentation/i2c/busses/i2c-i801

@@ -28,6 +28,7 @@ Supported adapters:
   * Intel Wildcat Point (PCH)
   * Intel Wildcat Point-LP (PCH)
   * Intel BayTrail (SOC)
+  * Intel Sunrise Point-H (PCH)
    Datasheets: Publicly available at the Intel website
 
 On Intel Patsburg and later chipsets, both the normal host SMBus controller

drivers/i2c/busses/Kconfig

@@ -77,6 +77,16 @@ config I2C_AMD8111
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-amd8111.
 
+config I2C_HIX5HD2
+	tristate "Hix5hd2 high-speed I2C driver"
+	depends on ARCH_HIX5HD2
+	help
+	  Say Y here to include support for high-speed I2C controller in the
+	  Hisilicon based hix5hd2 SoCs.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-hix5hd2.
+
 config I2C_I801
 	tristate "Intel 82801 (ICH/PCH)"
 	depends on PCI
@@ -112,6 +122,7 @@ config I2C_I801
 	    Wildcat Point (PCH)
 	    Wildcat Point-LP (PCH)
 	    BayTrail (SOC)
+	    Sunrise Point-H (PCH)
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-i801.
@@ -337,6 +348,17 @@ config I2C_AU1550
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-au1550.
 
+config I2C_AXXIA
+	tristate "Axxia I2C controller"
+	depends on ARCH_AXXIA || COMPILE_TEST
+	default ARCH_AXXIA
+	help
+	  Say yes if you want to support the I2C bus on Axxia platforms.
+
+	  Please note that this controller is limited to transfers of maximum
+	  255 bytes in length. Any attempt to to a larger transfer will return
+	  an error.
+
 config I2C_BCM2835
 	tristate "Broadcom BCM2835 I2C controller"
 	depends on ARCH_BCM2835
@@ -423,6 +445,7 @@ config I2C_DESIGNWARE_CORE
 config I2C_DESIGNWARE_PLATFORM
 	tristate "Synopsys DesignWare Platform"
 	select I2C_DESIGNWARE_CORE
+	depends on (ACPI && COMMON_CLK) || !ACPI
 	help
 	  If you say yes to this option, support will be included for the
 	  Synopsys DesignWare I2C adapter. Only master mode is supported.
@@ -465,7 +488,7 @@ config I2C_EG20T
 
 config I2C_EXYNOS5
 	tristate "Exynos5 high-speed I2C driver"
-	depends on ARCH_EXYNOS5 && OF
+	depends on ARCH_EXYNOS && OF
 	default y
 	help
 	  High-speed I2C controller on Exynos5 based Samsung SoCs.

drivers/i2c/busses/Makefile

@@ -31,6 +31,7 @@ obj-$(CONFIG_I2C_POWERMAC)	+= i2c-powermac.o
 # Embedded system I2C/SMBus host controller drivers
 obj-$(CONFIG_I2C_AT91)		+= i2c-at91.o
 obj-$(CONFIG_I2C_AU1550)	+= i2c-au1550.o
+obj-$(CONFIG_I2C_AXXIA)		+= i2c-axxia.o
 obj-$(CONFIG_I2C_BCM2835)	+= i2c-bcm2835.o
 obj-$(CONFIG_I2C_BLACKFIN_TWI)	+= i2c-bfin-twi.o
 obj-$(CONFIG_I2C_CADENCE)	+= i2c-cadence.o
@@ -47,6 +48,7 @@ obj-$(CONFIG_I2C_EG20T)		+= i2c-eg20t.o
 obj-$(CONFIG_I2C_EXYNOS5)	+= i2c-exynos5.o
 obj-$(CONFIG_I2C_GPIO)		+= i2c-gpio.o
 obj-$(CONFIG_I2C_HIGHLANDER)	+= i2c-highlander.o
+obj-$(CONFIG_I2C_HIX5HD2)	+= i2c-hix5hd2.o
 obj-$(CONFIG_I2C_IBM_IIC)	+= i2c-ibm_iic.o
 obj-$(CONFIG_I2C_IMX)		+= i2c-imx.o
 obj-$(CONFIG_I2C_IOP3XX)	+= i2c-iop3xx.o