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

Pull i2c updates from Wolfram Sang:
 "Here is the pull request from the i2c subsystem.  It got a little
  delayed because I needed to wait for a dependency to be included
  (commit b424080a: "reset: Add optional resets and stubs").  Plus,
  I had some email problems.  All done now, the highlights are:

   - drivers can now deprecate their use of i2c classes.  That shouldn't
     be used on embedded platforms anyhow and was often blindly
     copy&pasted.  This mechanism gives users time to switch away and
     ultimately boot faster once the use of classes for those drivers is
     gone for good.

   - new drivers for QUP, Cadence, efm32

   - tracepoint support for I2C and SMBus

   - bigger cleanups for the mv64xxx, nomadik, and designware drivers

  And the usual bugfixes, cleanups, feature additions.  Most stuff has
  been in linux-next for a while.  Just some hot fixes and new drivers
  were added a bit more recently."

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (63 commits)
  i2c: cadence: fix Kconfig dependency
  i2c: Add driver for Cadence I2C controller
  i2c: cadence: Document device tree bindings
  Documentation: i2c: improve section about flags mangling the protocol
  i2c: qup: use proper type fro clk_freq
  i2c: qup: off by ones in qup_i2c_probe()
  i2c: efm32: fix binding doc
  MAINTAINERS: update I2C web resources
  i2c: qup: New bus driver for the Qualcomm QUP I2C controller
  i2c: qup: Add device tree bindings information
  i2c: i2c-xiic: deprecate class based instantiation
  i2c: i2c-sirf: deprecate class based instantiation
  i2c: i2c-mv64xxx: deprecate class based instantiation
  i2c: i2c-designware-platdrv: deprecate class based instantiation
  i2c: i2c-davinci: deprecate class based instantiation
  i2c: i2c-bcm2835: deprecate class based instantiation
  i2c: mv64xxx: Fix reset controller handling
  i2c: omap: fix usage of IS_ERR_VALUE with pm_runtime_get_sync
  i2c: efm32: new bus driver
  i2c: exynos5: remove unnecessary cast of void pointer
  ...

Documentation/devicetree/bindings/i2c/i2c-at91.txt

@@ -12,6 +12,7 @@ Required properties :
 - 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 :
@@ -23,6 +24,7 @@ i2c0: i2c@fff84000 {
 	#address-cells = <1>;
 	#size-cells = <0>;
 	clocks = <&twi0_clk>;
+	clock-frequency = <400000>;
 
 	24c512@50 {
 		compatible = "24c512";

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

+Binding for the Cadence I2C controller
+
+Required properties:
+  - reg: Physical base address and size of the controller's register area.
+  - compatible: Compatibility string. Must be 'cdns,i2c-r1p10'.
+  - clocks: Input clock specifier. Refer to common clock bindings.
+  - interrupts: Interrupt specifier. Refer to interrupt bindings.
+  - #address-cells: Should be 1.
+  - #size-cells: Should be 0.
+
+Optional properties:
+  - clock-frequency: Desired operating frequency, in Hz, of the bus.
+  - clock-names: Input clock name, should be 'pclk'.
+
+Example:
+	i2c@e0004000 {
+		compatible = "cdns,i2c-r1p10";
+		clocks = <&clkc 38>;
+		interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+		reg = <0xe0004000 0x1000>;
+		clock-frequency = <400000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};

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

@@ -14,6 +14,12 @@ Optional properties :
  - i2c-sda-hold-time-ns : should contain the SDA hold time in nanoseconds.
    This option is only supported in hardware blocks version 1.11a or newer.
 
+ - i2c-scl-falling-time : should contain the SCL falling time in nanoseconds.
+   This value which is by default 300ns is used to compute the tLOW period.
+
+ - i2c-sda-falling-time : should contain the SDA falling time in nanoseconds.
+   This value which is by default 300ns is used to compute the tHIGH period.
+
 Example :
 
 	i2c@f0000 {
@@ -34,4 +40,6 @@ Example :
 		interrupts = <12 1>;
 		clock-frequency = <400000>;
 		i2c-sda-hold-time-ns = <300>;
+		i2c-sda-falling-time-ns = <300>;
+		i2c-scl-falling-time-ns = <300>;
 	};

Documentation/devicetree/bindings/i2c/i2c-efm32.txt

+* Energymicro efm32 i2c controller
+
+Required properties :
+
+ - reg : Offset and length of the register set for the device
+ - compatible : should be "energymicro,efm32-i2c"
+ - interrupts : the interrupt number
+ - clocks : reference to the module clock
+
+Recommended properties :
+
+ - clock-frequency : maximal I2C bus clock frequency in Hz.
+ - efm32,location : Decides the location of the USART I/O pins.
+   Allowed range : [0 .. 6]
+
+Example:
+	i2c0: i2c@4000a000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "energymicro,efm32-i2c";
+		reg = <0x4000a000 0x400>;
+		interrupts = <9>;
+		clocks = <&cmu clk_HFPERCLKI2C0>;
+		clock-frequency = <100000>;
+		status = "ok";
+		efm32,location = <3>;
+
+		eeprom@50 {
+			compatible = "microchip,24c02";
+			reg = <0x50>;
+			pagesize = <16>;
+		};
+	};
+

Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt

@@ -4,12 +4,16 @@
 Required properties :
 
  - reg             : Offset and length of the register set for the device
- - compatible      : Should be "marvell,mv64xxx-i2c" or "allwinner,sun4i-i2c"
-                     or "marvell,mv78230-i2c" or "marvell,mv78230-a0-i2c"
-                     Note: Only use "marvell,mv78230-a0-i2c" for a very rare,
-                     initial version of the SoC which had broken offload
-                     support.  Linux auto-detects this and sets it
-                     appropriately.
+ - compatible      : Should be either:
+                     - "allwinner,sun4i-i2c"
+                     - "allwinner,sun6i-a31-i2c"
+                     - "marvell,mv64xxx-i2c"
+                     - "marvell,mv78230-i2c"
+                     - "marvell,mv78230-a0-i2c"
+                       * Note: Only use "marvell,mv78230-a0-i2c" for a
+                         very rare, initial version of the SoC which
+                         had broken offload support.  Linux
+                         auto-detects this and sets it appropriately.
  - interrupts      : The interrupt number
 
 Optional properties :
@@ -17,6 +21,10 @@ Optional properties :
  - clock-frequency : Desired I2C bus clock frequency in Hz. If not set the
 default frequency is 100kHz
 
+ - resets          : phandle to the parent reset controller. Mandatory
+                     whenever you're using the "allwinner,sun6i-a31-i2c"
+                     compatible.
+
 Examples:
 
 	i2c@11000 {

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

@@ -6,6 +6,7 @@ Required properties:
 	"renesas,i2c-r8a7778"
 	"renesas,i2c-r8a7779"
 	"renesas,i2c-r8a7790"
+	"renesas,i2c-r8a7791"
 - reg: physical base address of the controller and length of memory mapped
   region.
 - interrupts: interrupt specifier.
@@ -13,11 +14,16 @@ Required properties:
 Optional properties:
 - clock-frequency: desired I2C bus clock frequency in Hz. The absence of this
   propoerty indicates the default frequency 100 kHz.
+- clocks: clock specifier.
 
 Examples :
 
-i2c0: i2c@e6500000 {
-	compatible = "renesas,i2c-rcar-h2";
-	reg = <0 0xe6500000 0 0x428>;
-	interrupts = <0 174 0x4>;
+i2c0: i2c@e6508000 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	compatible = "renesas,i2c-r8a7791";
+	reg = <0 0xe6508000 0 0x40>;
+	interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&mstp9_clks R8A7791_CLK_I2C0>;
+	clock-frequency = <400000>;
 };

Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt

+Qualcomm Universal Peripheral (QUP) I2C controller
+
+Required properties:
+ - compatible: Should be:
+   * "qcom,i2c-qup-v1.1.1" for 8660, 8960 and 8064.
+   * "qcom,i2c-qup-v2.1.1" for 8974 v1.
+   * "qcom,i2c-qup-v2.2.1" for 8974 v2 and later.
+ - reg: Should contain QUP register address and length.
+ - interrupts: Should contain I2C interrupt.
+
+ - clocks: A list of phandles + clock-specifiers, one for each entry in
+   clock-names.
+ - clock-names: Should contain:
+   * "core" for the core clock
+   * "iface" for the AHB clock
+
+ - #address-cells: Should be <1> Address cells for i2c device address
+ - #size-cells: Should be <0> as i2c addresses have no size component
+
+Optional properties:
+ - clock-frequency: Should specify the desired i2c bus clock frequency in Hz,
+                    defaults to 100kHz if omitted.
+
+Child nodes should conform to i2c bus binding.
+
+Example:
+
+ i2c@f9924000 {
+ 	compatible = "qcom,i2c-qup-v2.2.1";
+ 	reg = <0xf9924000 0x1000>;
+ 	interrupts = <0 96 0>;
+
+ 	clocks = <&gcc GCC_BLSP1_QUP2_I2C_APPS_CLK>, <&gcc GCC_BLSP1_AHB_CLK>;
+ 	clock-names = "core", "iface";
+
+ 	clock-frequency = <355000>;
+
+ 	#address-cells = <1>;
+ 	#size-cells = <0>;
+ };

Documentation/i2c/busses/i2c-i801

@@ -26,6 +26,7 @@ Supported adapters:
   * Intel Wellsburg (PCH)
   * Intel Coleto Creek (PCH)
   * Intel Wildcat Point-LP (PCH)
+  * Intel BayTrail (SOC)
    Datasheets: Publicly available at the Intel website
 
 On Intel Patsburg and later chipsets, both the normal host SMBus controller

Documentation/i2c/functionality

@@ -46,7 +46,7 @@ A few combinations of the above flags are also defined for your convenience:
                                   and write_block_data commands
   I2C_FUNC_SMBUS_I2C_BLOCK        Handles the SMBus read_i2c_block_data
                                   and write_i2c_block_data commands
-  I2C_FUNC_SMBUS_EMUL             Handles all SMBus commands than can be
+  I2C_FUNC_SMBUS_EMUL             Handles all SMBus commands that can be
                                   emulated by a real I2C adapter (using
                                   the transparent emulation layer)
 

Documentation/i2c/i2c-protocol

@@ -49,11 +49,20 @@ a byte read, followed by a byte write:
 Modified transactions
 =====================
 
-The following modifications to the I2C protocol can also be generated,
-with the exception of I2C_M_NOSTART these are usually only needed to
-work around device issues:
+The following modifications to the I2C protocol can also be generated by
+setting these flags for i2c messages. With the exception of I2C_M_NOSTART, they
+are usually only needed to work around device issues:
 
-  Flag I2C_M_NOSTART: 
+I2C_M_IGNORE_NAK:
+    Normally message is interrupted immediately if there is [NA] from the
+    client. Setting this flag treats any [NA] as [A], and all of
+    message is sent.
+    These messages may still fail to SCL lo->hi timeout.
+
+I2C_M_NO_RD_ACK:
+    In a read message, master A/NA bit is skipped.
+
+I2C_M_NOSTART:
     In a combined transaction, no 'S Addr Wr/Rd [A]' is generated at some
     point. For example, setting I2C_M_NOSTART on the second partial message
     generates something like:
@@ -67,17 +76,13 @@ work around device issues:
     I2C device but may also be used between direction changes by some
     rare devices.
 
-  Flags I2C_M_REV_DIR_ADDR
+I2C_M_REV_DIR_ADDR:
     This toggles the Rd/Wr flag. That is, if you want to do a write, but
     need to emit an Rd instead of a Wr, or vice versa, you set this
     flag. For example:
       S Addr Rd [A] Data [A] Data [A] ... [A] Data [A] P
 
-  Flags I2C_M_IGNORE_NAK
-    Normally message is interrupted immediately if there is [NA] from the
-    client. Setting this flag treats any [NA] as [A], and all of
-    message is sent.
-    These messages may still fail to SCL lo->hi timeout.
-
-  Flags I2C_M_NO_RD_ACK
-    In a read message, master A/NA bit is skipped.
+I2C_M_STOP:
+    Force a stop condition (P) after the message. Some I2C related protocols
+    like SCCB require that. Normally, you really don't want to get interrupted
+    between the messages of one transfer.

MAINTAINERS

@@ -1427,6 +1427,7 @@ F:	drivers/cpuidle/cpuidle-zynq.c
 N:	zynq
 N:	xilinx
 F:	drivers/clocksource/cadence_ttc_timer.c
+F:	drivers/i2c/busses/i2c-cadence.c
 F:	drivers/mmc/host/sdhci-of-arasan.c
 
 ARM SMMU DRIVER
@@ -4308,7 +4309,8 @@ F:	drivers/i2c/i2c-stub.c
 I2C SUBSYSTEM
 M:	Wolfram Sang <wsa@the-dreams.de>
 L:	linux-i2c@vger.kernel.org
-W:	http://i2c.wiki.kernel.org/
+W:	https://i2c.wiki.kernel.org/
+Q:	https://patchwork.ozlabs.org/project/linux-i2c/list/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git
 S:	Maintained
 F:	Documentation/i2c/

arch/blackfin/include/asm/bfin_twi.h

@@ -9,60 +9,7 @@
 #ifndef __ASM_BFIN_TWI_H__
 #define __ASM_BFIN_TWI_H__
 
-#include <linux/types.h>
-#include <linux/i2c.h>
-
-/*
- * All Blackfin system MMRs are padded to 32bits even if the register
- * itself is only 16bits.  So use a helper macro to streamline this.
- */
-#define __BFP(m) u16 m; u16 __pad_##m
-
-/*
- * bfin twi registers layout
- */
-struct bfin_twi_regs {
-	__BFP(clkdiv);
-	__BFP(control);
-	__BFP(slave_ctl);
-	__BFP(slave_stat);
-	__BFP(slave_addr);
-	__BFP(master_ctl);
-	__BFP(master_stat);
-	__BFP(master_addr);
-	__BFP(int_stat);
-	__BFP(int_mask);
-	__BFP(fifo_ctl);
-	__BFP(fifo_stat);
-	u32 __pad[20];
-	__BFP(xmt_data8);
-	__BFP(xmt_data16);
-	__BFP(rcv_data8);
-	__BFP(rcv_data16);
-};
-
-#undef __BFP
-
-struct bfin_twi_iface {
-	int			irq;
-	spinlock_t		lock;
-	char			read_write;
-	u8			command;
-	u8			*transPtr;
-	int			readNum;
-	int			writeNum;
-	int			cur_mode;
-	int			manual_stop;
-	int			result;
-	struct i2c_adapter	adap;
-	struct completion	complete;
-	struct i2c_msg		*pmsg;
-	int			msg_num;
-	int			cur_msg;
-	u16			saved_clkdiv;
-	u16			saved_control;
-	struct bfin_twi_regs __iomem *regs_base;
-};
+#include <asm/blackfin.h>
 
 #define DEFINE_TWI_REG(reg_name, reg) \
 static inline u16 read_##reg_name(struct bfin_twi_iface *iface) \
@@ -71,7 +18,6 @@ static inline void write_##reg_name(struct bfin_twi_iface *iface, u16 v) \
 	{ bfin_write16(&iface->regs_base->reg, v); }
 
 DEFINE_TWI_REG(CLKDIV, clkdiv)
-DEFINE_TWI_REG(CONTROL, control)
 DEFINE_TWI_REG(SLAVE_CTL, slave_ctl)
 DEFINE_TWI_REG(SLAVE_STAT, slave_stat)
 DEFINE_TWI_REG(SLAVE_ADDR, slave_addr)
@@ -80,7 +26,6 @@ DEFINE_TWI_REG(MASTER_STAT, master_stat)
 DEFINE_TWI_REG(MASTER_ADDR, master_addr)
 DEFINE_TWI_REG(INT_STAT, int_stat)
 DEFINE_TWI_REG(INT_MASK, int_mask)
-DEFINE_TWI_REG(FIFO_CTL, fifo_ctl)
 DEFINE_TWI_REG(FIFO_STAT, fifo_stat)
 DEFINE_TWI_REG(XMT_DATA8, xmt_data8)
 DEFINE_TWI_REG(XMT_DATA16, xmt_data16)
@@ -113,75 +58,25 @@ static inline u16 read_RCV_DATA16(struct bfin_twi_iface *iface)
 }
 #endif
 
+static inline u16 read_FIFO_CTL(struct bfin_twi_iface *iface)
+{
+	return bfin_read16(&iface->regs_base->fifo_ctl);
+}
 
-/*  ********************  TWO-WIRE INTERFACE (TWI) MASKS  ***********************/
-/* TWI_CLKDIV Macros (Use: *pTWI_CLKDIV = CLKLOW(x)|CLKHI(y);  )				*/
-#define	CLKLOW(x)	((x) & 0xFF)	/* Periods Clock Is Held Low                    */
-#define CLKHI(y)	(((y)&0xFF)<<0x8)	/* Periods Before New Clock Low                 */
-
-/* TWI_PRESCALE Masks															*/
-#define	PRESCALE	0x007F	/* SCLKs Per Internal Time Reference (10MHz)    */
-#define	TWI_ENA		0x0080	/* TWI Enable                                                                   */
-#define	SCCB		0x0200	/* SCCB Compatibility Enable                                    */
-
-/* TWI_SLAVE_CTL Masks															*/
-#define	SEN			0x0001	/* Slave Enable                                                                 */
-#define	SADD_LEN	0x0002	/* Slave Address Length                                                 */
-#define	STDVAL		0x0004	/* Slave Transmit Data Valid                                    */
-#define	NAK			0x0008	/* NAK/ACK* Generated At Conclusion Of Transfer */
-#define	GEN			0x0010	/* General Call Address Matching Enabled                */
-
-/* TWI_SLAVE_STAT Masks															*/
-#define	SDIR		0x0001	/* Slave Transfer Direction (Transmit/Receive*) */
-#define GCALL		0x0002	/* General Call Indicator                                               */
-
-/* TWI_MASTER_CTL Masks													*/
-#define	MEN			0x0001	/* Master Mode Enable                                           */
-#define	MADD_LEN	0x0002	/* Master Address Length                                        */
-#define	MDIR		0x0004	/* Master Transmit Direction (RX/TX*)           */
-#define	FAST		0x0008	/* Use Fast Mode Timing Specs                           */
-#define	STOP		0x0010	/* Issue Stop Condition                                         */
-#define	RSTART		0x0020	/* Repeat Start or Stop* At End Of Transfer     */
-#define	DCNT		0x3FC0	/* Data Bytes To Transfer                                       */
-#define	SDAOVR		0x4000	/* Serial Data Override                                         */
-#define	SCLOVR		0x8000	/* Serial Clock Override                                        */
-
-/* TWI_MASTER_STAT Masks														*/
-#define	MPROG		0x0001	/* Master Transfer In Progress                                  */
-#define	LOSTARB		0x0002	/* Lost Arbitration Indicator (Xfer Aborted)    */
-#define	ANAK		0x0004	/* Address Not Acknowledged                                             */
-#define	DNAK		0x0008	/* Data Not Acknowledged                                                */
-#define	BUFRDERR	0x0010	/* Buffer Read Error                                                    */
-#define	BUFWRERR	0x0020	/* Buffer Write Error                                                   */
-#define	SDASEN		0x0040	/* Serial Data Sense                                                    */
-#define	SCLSEN		0x0080	/* Serial Clock Sense                                                   */
-#define	BUSBUSY		0x0100	/* Bus Busy Indicator                                                   */
-
-/* TWI_INT_SRC and TWI_INT_ENABLE Masks						*/
-#define	SINIT		0x0001	/* Slave Transfer Initiated     */
-#define	SCOMP		0x0002	/* Slave Transfer Complete      */
-#define	SERR		0x0004	/* Slave Transfer Error         */
-#define	SOVF		0x0008	/* Slave Overflow                       */
-#define	MCOMP		0x0010	/* Master Transfer Complete     */
-#define	MERR		0x0020	/* Master Transfer Error        */
-#define	XMTSERV		0x0040	/* Transmit FIFO Service        */
-#define	RCVSERV		0x0080	/* Receive FIFO Service         */
-
-/* TWI_FIFO_CTRL Masks												*/
-#define	XMTFLUSH	0x0001	/* Transmit Buffer Flush                        */
-#define	RCVFLUSH	0x0002	/* Receive Buffer Flush                         */
-#define	XMTINTLEN	0x0004	/* Transmit Buffer Interrupt Length     */
-#define	RCVINTLEN	0x0008	/* Receive Buffer Interrupt Length      */
-
-/* TWI_FIFO_STAT Masks															*/
-#define	XMTSTAT		0x0003	/* Transmit FIFO Status                                                 */
-#define	XMT_EMPTY	0x0000	/*              Transmit FIFO Empty                                             */
-#define	XMT_HALF	0x0001	/*              Transmit FIFO Has 1 Byte To Write               */
-#define	XMT_FULL	0x0003	/*              Transmit FIFO Full (2 Bytes To Write)   */
+static inline void write_FIFO_CTL(struct bfin_twi_iface *iface, u16 v)
+{
+	bfin_write16(&iface->regs_base->fifo_ctl, v);
+	SSYNC();
+}
 
-#define	RCVSTAT		0x000C	/* Receive FIFO Status                                                  */
-#define	RCV_EMPTY	0x0000	/*              Receive FIFO Empty                                              */
-#define	RCV_HALF	0x0004	/*              Receive FIFO Has 1 Byte To Read                 */
-#define	RCV_FULL	0x000C	/*              Receive FIFO Full (2 Bytes To Read)             */
+static inline u16 read_CONTROL(struct bfin_twi_iface *iface)
+{
+	return bfin_read16(&iface->regs_base->control);
+}
 
+static inline void write_CONTROL(struct bfin_twi_iface *iface, u16 v)
+{
+	SSYNC();
+	bfin_write16(&iface->regs_base->control, v);
+}
 #endif

arch/blackfin/kernel/debug-mmrs.c

@@ -10,6 +10,7 @@
 #include <linux/fs.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/i2c/bfin_twi.h>
 
 #include <asm/blackfin.h>
 #include <asm/gpio.h>

drivers/i2c/busses/Kconfig

@@ -110,6 +110,7 @@ config I2C_I801
 	    Wellsburg (PCH)
 	    Coleto Creek (PCH)
 	    Wildcat Point-LP (PCH)
+	    BayTrail (SOC)
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-i801.
@@ -375,6 +376,13 @@ config I2C_BLACKFIN_TWI_CLK_KHZ
 	help
 	  The unit of the TWI clock is kHz.
 
+config I2C_CADENCE
+	tristate "Cadence I2C Controller"
+	depends on ARCH_ZYNQ
+	help
+	  Say yes here to select Cadence I2C Host Controller. This controller is
+	  e.g. used by Xilinx Zynq.
+
 config I2C_CBUS_GPIO
 	tristate "CBUS I2C driver"
 	depends on GPIOLIB
@@ -432,6 +440,13 @@ config I2C_DESIGNWARE_PCI
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-designware-pci.
 
+config I2C_EFM32
+	tristate "EFM32 I2C controller"
+	depends on ARCH_EFM32 || COMPILE_TEST
+	help
+	  This driver supports the i2c block found in Energy Micro's EFM32
+	  SoCs.
+
 config I2C_EG20T
 	tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) I2C"
 	depends on PCI
@@ -527,7 +542,7 @@ config I2C_MPC
 
 config I2C_MV64XXX
 	tristate "Marvell mv64xxx I2C Controller"
-	depends on (MV64X60 || PLAT_ORION || ARCH_SUNXI)
+	depends on MV64X60 || PLAT_ORION || ARCH_SUNXI
 	help
 	  If you say yes to this option, support will be included for the
 	  built-in I2C interface on the Marvell 64xxx line of host bridges.
@@ -648,6 +663,16 @@ config I2C_PXA_SLAVE
 	  is necessary for systems where the PXA may be a target on the
 	  I2C bus.
 
+config I2C_QUP
+	tristate "Qualcomm QUP based I2C controller"
+	depends on ARCH_QCOM
+	help
+	  If you say yes to this option, support will be included for the
+	  built-in I2C interface on the Qualcomm SoCs.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-qup.
+
 config I2C_RIIC
 	tristate "Renesas RIIC adapter"
 	depends on ARCH_SHMOBILE || COMPILE_TEST

drivers/i2c/busses/Makefile

@@ -33,6 +33,7 @@ obj-$(CONFIG_I2C_AT91)		+= i2c-at91.o
 obj-$(CONFIG_I2C_AU1550)	+= i2c-au1550.o
 obj-$(CONFIG_I2C_BCM2835)	+= i2c-bcm2835.o
 obj-$(CONFIG_I2C_BLACKFIN_TWI)	+= i2c-bfin-twi.o
+obj-$(CONFIG_I2C_CADENCE)	+= i2c-cadence.o
 obj-$(CONFIG_I2C_CBUS_GPIO)	+= i2c-cbus-gpio.o
 obj-$(CONFIG_I2C_CPM)		+= i2c-cpm.o
 obj-$(CONFIG_I2C_DAVINCI)	+= i2c-davinci.o
@@ -41,6 +42,7 @@ obj-$(CONFIG_I2C_DESIGNWARE_PLATFORM)	+= i2c-designware-platform.o
 i2c-designware-platform-objs := i2c-designware-platdrv.o
 obj-$(CONFIG_I2C_DESIGNWARE_PCI)	+= i2c-designware-pci.o
 i2c-designware-pci-objs := i2c-designware-pcidrv.o
+obj-$(CONFIG_I2C_EFM32)		+= i2c-efm32.o
 obj-$(CONFIG_I2C_EG20T)		+= i2c-eg20t.o
 obj-$(CONFIG_I2C_EXYNOS5)	+= i2c-exynos5.o
 obj-$(CONFIG_I2C_GPIO)		+= i2c-gpio.o
@@ -63,6 +65,7 @@ obj-$(CONFIG_I2C_PNX)		+= i2c-pnx.o
 obj-$(CONFIG_I2C_PUV3)		+= i2c-puv3.o
 obj-$(CONFIG_I2C_PXA)		+= i2c-pxa.o
 obj-$(CONFIG_I2C_PXA_PCI)	+= i2c-pxa-pci.o
+obj-$(CONFIG_I2C_QUP)		+= i2c-qup.o
 obj-$(CONFIG_I2C_RIIC)		+= i2c-riic.o
 obj-$(CONFIG_I2C_S3C2410)	+= i2c-s3c2410.o
 obj-$(CONFIG_I2C_S6000)		+= i2c-s6000.o

drivers/i2c/busses/i2c-ali1535.c

@@ -494,7 +494,7 @@ static struct i2c_adapter ali1535_adapter = {
 	.algo		= &smbus_algorithm,
 };
 
-static DEFINE_PCI_DEVICE_TABLE(ali1535_ids) = {
+static const struct pci_device_id ali1535_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) },
 	{ },
 };

drivers/i2c/busses/i2c-ali1563.c

@@ -416,7 +416,7 @@ static void ali1563_remove(struct pci_dev *dev)
 	ali1563_shutdown(dev);
 }
 
-static DEFINE_PCI_DEVICE_TABLE(ali1563_id_table) = {
+static const struct pci_device_id ali1563_id_table[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1563) },
 	{},
 };

drivers/i2c/busses/i2c-ali15x3.c

@@ -476,7 +476,7 @@ static struct i2c_adapter ali15x3_adapter = {
 	.algo		= &smbus_algorithm,
 };
 
-static DEFINE_PCI_DEVICE_TABLE(ali15x3_ids) = {
+static const struct pci_device_id ali15x3_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) },
 	{ 0, }
 };

drivers/i2c/busses/i2c-amd756.c

@@ -307,7 +307,7 @@ static const char* chipname[] = {
 	"nVidia nForce", "AMD8111",
 };
 
-static DEFINE_PCI_DEVICE_TABLE(amd756_ids) = {
+static const struct pci_device_id amd756_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_740B),
 	  .driver_data = AMD756 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7413),

drivers/i2c/busses/i2c-amd8111.c

@@ -414,7 +414,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 };
 
 
-static DEFINE_PCI_DEVICE_TABLE(amd8111_ids) = {
+static const struct pci_device_id amd8111_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS2) },
 	{ 0, }
 };

drivers/i2c/busses/i2c-at91.c

@@ -32,7 +32,7 @@
 #include <linux/slab.h>
 #include <linux/platform_data/dma-atmel.h>
 
-#define TWI_CLK_HZ		100000			/* max 400 Kbits/s */
+#define DEFAULT_TWI_CLK_HZ		100000		/* max 400 Kbits/s */
 #define AT91_I2C_TIMEOUT	msecs_to_jiffies(100)	/* transfer timeout */
 #define AT91_I2C_DMA_THRESHOLD	8			/* enable DMA if transfer size is bigger than this threshold */
 
@@ -711,6 +711,7 @@ static int at91_twi_probe(struct platform_device *pdev)
 	struct resource *mem;
 	int rc;
 	u32 phy_addr;
+	u32 bus_clk_rate;
 
 	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 	if (!dev)
@@ -756,13 +757,18 @@ static int at91_twi_probe(struct platform_device *pdev)
 			dev->use_dma = true;
 	}
 
-	at91_calc_twi_clock(dev, TWI_CLK_HZ);
+	rc = of_property_read_u32(dev->dev->of_node, "clock-frequency",
+			&bus_clk_rate);
+	if (rc)
+		bus_clk_rate = DEFAULT_TWI_CLK_HZ;
+
+	at91_calc_twi_clock(dev, bus_clk_rate);
 	at91_init_twi_bus(dev);
 
 	snprintf(dev->adapter.name, sizeof(dev->adapter.name), "AT91");
 	i2c_set_adapdata(&dev->adapter, dev);
 	dev->adapter.owner = THIS_MODULE;
-	dev->adapter.class = I2C_CLASS_HWMON;
+	dev->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_DEPRECATED;
 	dev->adapter.algo = &at91_twi_algorithm;
 	dev->adapter.dev.parent = dev->dev;
 	dev->adapter.nr = pdev->id;

drivers/i2c/busses/i2c-bcm2835.c

@@ -219,7 +219,7 @@ static const struct i2c_algorithm bcm2835_i2c_algo = {
 static int bcm2835_i2c_probe(struct platform_device *pdev)
 {
 	struct bcm2835_i2c_dev *i2c_dev;
-	struct resource *mem, *requested, *irq;
+	struct resource *mem, *irq;
 	u32 bus_clk_rate, divider;
 	int ret;
 	struct i2c_adapter *adap;
@@ -234,25 +234,9 @@ static int bcm2835_i2c_probe(struct platform_device *pdev)
 	init_completion(&i2c_dev->completion);
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem) {
-		dev_err(&pdev->dev, "No mem resource\n");
-		return -ENODEV;
-	}
-
-	requested = devm_request_mem_region(&pdev->dev, mem->start,
-					    resource_size(mem),
-					    dev_name(&pdev->dev));
-	if (!requested) {
-		dev_err(&pdev->dev, "Could not claim register region\n");
-		return -EBUSY;
-	}
-
-	i2c_dev->regs = devm_ioremap(&pdev->dev, mem->start,
-				     resource_size(mem));
-	if (!i2c_dev->regs) {
-		dev_err(&pdev->dev, "Could not map registers\n");
-		return -ENOMEM;
-	}
+	i2c_dev->regs = devm_ioremap_resource(&pdev->dev, mem);
+	if (IS_ERR(i2c_dev->regs))
+		return PTR_ERR(i2c_dev->regs);
 
 	i2c_dev->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(i2c_dev->clk)) {
@@ -295,7 +279,7 @@ static int bcm2835_i2c_probe(struct platform_device *pdev)
 	adap = &i2c_dev->adapter;
 	i2c_set_adapdata(adap, i2c_dev);
 	adap->owner = THIS_MODULE;
-	adap->class = I2C_CLASS_HWMON;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_DEPRECATED;
 	strlcpy(adap->name, "bcm2835 I2C adapter", sizeof(adap->name));
 	adap->algo = &bcm2835_i2c_algo;
 	adap->dev.parent = &pdev->dev;

drivers/i2c/busses/i2c-bfin-twi.c

@@ -21,10 +21,10 @@
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
+#include <linux/i2c/bfin_twi.h>
 
-#include <asm/blackfin.h>
-#include <asm/portmux.h>
 #include <asm/irq.h>
+#include <asm/portmux.h>
 #include <asm/bfin_twi.h>
 
 /* SMBus mode*/
@@ -65,7 +65,6 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface,
 		/* Transmit next data */
 		while (iface->writeNum > 0 &&
 			(read_FIFO_STAT(iface) & XMTSTAT) != XMT_FULL) {
-			SSYNC();
 			write_XMT_DATA8(iface, *(iface->transPtr++));
 			iface->writeNum--;
 		}
@@ -248,7 +247,6 @@ static irqreturn_t bfin_twi_interrupt_entry(int irq, void *dev_id)
 		/* Clear interrupt status */
 		write_INT_STAT(iface, twi_int_status);
 		bfin_twi_handle_interrupt(iface, twi_int_status);
-		SSYNC();
 	}
 	spin_unlock_irqrestore(&iface->lock, flags);
 	return IRQ_HANDLED;
@@ -294,9 +292,7 @@ static int bfin_twi_do_master_xfer(struct i2c_adapter *adap,
 	 *  discarded before start a new operation.
 	 */
 	write_FIFO_CTL(iface, 0x3);
-	SSYNC();
 	write_FIFO_CTL(iface, 0);
-	SSYNC();
 
 	if (pmsg->flags & I2C_M_RD)
 		iface->read_write = I2C_SMBUS_READ;
@@ -306,7 +302,6 @@ static int bfin_twi_do_master_xfer(struct i2c_adapter *adap,
 		if (iface->writeNum > 0) {
 			write_XMT_DATA8(iface, *(iface->transPtr++));
 			iface->writeNum--;
-			SSYNC();
 		}
 	}
 
@@ -315,7 +310,6 @@ static int bfin_twi_do_master_xfer(struct i2c_adapter *adap,
 
 	/* Interrupt mask . Enable XMT, RCV interrupt */
 	write_INT_MASK(iface, MCOMP | MERR | RCVSERV | XMTSERV);
-	SSYNC();
 
 	if (pmsg->len <= 255)
 		write_MASTER_CTL(iface, pmsg->len << 6);
@@ -329,7 +323,6 @@ static int bfin_twi_do_master_xfer(struct i2c_adapter *adap,
 		(iface->msg_num > 1 ? RSTART : 0) |
 		((iface->read_write == I2C_SMBUS_READ) ? MDIR : 0) |
 		((CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ > 100) ? FAST : 0));
-	SSYNC();
 
 	while (!iface->result) {
 		if (!wait_for_completion_timeout(&iface->complete,
@@ -453,7 +446,6 @@ int bfin_twi_do_smbus_xfer(struct i2c_adapter *adap, u16 addr,
 	 * start a new operation.
 	 */
 	write_FIFO_CTL(iface, 0x3);
-	SSYNC();
 	write_FIFO_CTL(iface, 0);
 
 	/* clear int stat */
@@ -461,7 +453,6 @@ int bfin_twi_do_smbus_xfer(struct i2c_adapter *adap, u16 addr,
 
 	/* Set Transmit device address */
 	write_MASTER_ADDR(iface, addr);
-	SSYNC();
 
 	switch (iface->cur_mode) {
 	case TWI_I2C_MODE_STANDARDSUB:
@@ -469,7 +460,6 @@ int bfin_twi_do_smbus_xfer(struct i2c_adapter *adap, u16 addr,
 		write_INT_MASK(iface, MCOMP | MERR |
 			((iface->read_write == I2C_SMBUS_READ) ?
 			RCVSERV : XMTSERV));
-		SSYNC();
 
 		if (iface->writeNum + 1 <= 255)
 			write_MASTER_CTL(iface, (iface->writeNum + 1) << 6);
@@ -484,7 +474,6 @@ int bfin_twi_do_smbus_xfer(struct i2c_adapter *adap, u16 addr,
 	case TWI_I2C_MODE_COMBINED:
 		write_XMT_DATA8(iface, iface->command);
 		write_INT_MASK(iface, MCOMP | MERR | RCVSERV | XMTSERV);
-		SSYNC();
 
 		if (iface->writeNum > 0)
 			write_MASTER_CTL(iface, (iface->writeNum + 1) << 6);
@@ -531,7 +520,6 @@ int bfin_twi_do_smbus_xfer(struct i2c_adapter *adap, u16 addr,
 		write_INT_MASK(iface, MCOMP | MERR |
 			((iface->read_write == I2C_SMBUS_READ) ?
 			RCVSERV : XMTSERV));
-		SSYNC();
 
 		/* Master enable */
 		write_MASTER_CTL(iface, read_MASTER_CTL(iface) | MEN |
@@ -539,7 +527,6 @@ int bfin_twi_do_smbus_xfer(struct i2c_adapter *adap, u16 addr,
 			((CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ > 100) ? FAST : 0));
 		break;
 	}
-	SSYNC();
 
 	while (!iface->result) {
 		if (!wait_for_completion_timeout(&iface->complete,
@@ -669,7 +656,7 @@ static int i2c_bfin_twi_probe(struct platform_device *pdev)
 	strlcpy(p_adap->name, pdev->name, sizeof(p_adap->name));
 	p_adap->algo = &bfin_twi_algorithm;
 	p_adap->algo_data = iface;
-	p_adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
+	p_adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD | I2C_CLASS_DEPRECATED;
 	p_adap->dev.parent = &pdev->dev;
 	p_adap->timeout = 5 * HZ;
 	p_adap->retries = 3;
@@ -704,7 +691,6 @@ static int i2c_bfin_twi_probe(struct platform_device *pdev)
 
 	/* Enable TWI */
 	write_CONTROL(iface, read_CONTROL(iface) | TWI_ENA);
-	SSYNC();
 
 	rc = i2c_add_numbered_adapter(p_adap);
 	if (rc < 0) {

drivers/i2c/busses/i2c-davinci.c

@@ -712,7 +712,7 @@ static int davinci_i2c_probe(struct platform_device *pdev)
 	adap = &dev->adapter;
 	i2c_set_adapdata(adap, dev);
 	adap->owner = THIS_MODULE;
-	adap->class = I2C_CLASS_HWMON;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_DEPRECATED;
 	strlcpy(adap->name, "DaVinci I2C adapter", sizeof(adap->name));
 	adap->algo = &i2c_davinci_algo;
 	adap->dev.parent = &pdev->dev;

drivers/i2c/busses/i2c-designware-core.c

@@ -218,7 +218,7 @@ i2c_dw_scl_hcnt(u32 ic_clk, u32 tSYMBOL, u32 tf, int cond, int offset)
 		 *
 		 * If your hardware is free from tHD;STA issue, try this one.
 		 */
-		return (ic_clk * tSYMBOL + 5000) / 10000 - 8 + offset;
+		return (ic_clk * tSYMBOL + 500000) / 1000000 - 8 + offset;
 	else
 		/*
 		 * Conditional expression:
@@ -234,7 +234,8 @@ i2c_dw_scl_hcnt(u32 ic_clk, u32 tSYMBOL, u32 tf, int cond, int offset)
 		 * The reason why we need to take into account "tf" here,
 		 * is the same as described in i2c_dw_scl_lcnt().
 		 */
-		return (ic_clk * (tSYMBOL + tf) + 5000) / 10000 - 3 + offset;
+		return (ic_clk * (tSYMBOL + tf) + 500000) / 1000000
+			- 3 + offset;
 }
 
 static u32 i2c_dw_scl_lcnt(u32 ic_clk, u32 tLOW, u32 tf, int offset)
@@ -250,7 +251,7 @@ static u32 i2c_dw_scl_lcnt(u32 ic_clk, u32 tLOW, u32 tf, int offset)
 	 * account the fall time of SCL signal (tf).  Default tf value
 	 * should be 0.3 us, for safety.
 	 */
-	return ((ic_clk * (tLOW + tf) + 5000) / 10000) - 1 + offset;
+	return ((ic_clk * (tLOW + tf) + 500000) / 1000000) - 1 + offset;
 }
 
 static void __i2c_dw_enable(struct dw_i2c_dev *dev, bool enable)
@@ -287,6 +288,7 @@ int i2c_dw_init(struct dw_i2c_dev *dev)
 	u32 input_clock_khz;
 	u32 hcnt, lcnt;
 	u32 reg;
+	u32 sda_falling_time, scl_falling_time;
 
 	input_clock_khz = dev->get_clk_rate_khz(dev);
 
@@ -308,15 +310,18 @@ int i2c_dw_init(struct dw_i2c_dev *dev)
 
 	/* set standard and fast speed deviders for high/low periods */
 
+	sda_falling_time = dev->sda_falling_time ?: 300; /* ns */
+	scl_falling_time = dev->scl_falling_time ?: 300; /* ns */
+
 	/* Standard-mode */
 	hcnt = i2c_dw_scl_hcnt(input_clock_khz,
-				40,	/* tHD;STA = tHIGH = 4.0 us */
-				3,	/* tf = 0.3 us */
+				4000,	/* tHD;STA = tHIGH = 4.0 us */
+				sda_falling_time,
 				0,	/* 0: DW default, 1: Ideal */
 				0);	/* No offset */
 	lcnt = i2c_dw_scl_lcnt(input_clock_khz,
-				47,	/* tLOW = 4.7 us */
-				3,	/* tf = 0.3 us */
+				4700,	/* tLOW = 4.7 us */
+				scl_falling_time,
 				0);	/* No offset */
 
 	/* Allow platforms to specify the ideal HCNT and LCNT values */
@@ -330,13 +335,13 @@ int i2c_dw_init(struct dw_i2c_dev *dev)
 
 	/* Fast-mode */
 	hcnt = i2c_dw_scl_hcnt(input_clock_khz,
-				6,	/* tHD;STA = tHIGH = 0.6 us */
-				3,	/* tf = 0.3 us */
+				600,	/* tHD;STA = tHIGH = 0.6 us */
+				sda_falling_time,
 				0,	/* 0: DW default, 1: Ideal */
 				0);	/* No offset */
 	lcnt = i2c_dw_scl_lcnt(input_clock_khz,
-				13,	/* tLOW = 1.3 us */
-				3,	/* tf = 0.3 us */
+				1300,	/* tLOW = 1.3 us */
+				scl_falling_time,
 				0);	/* No offset */
 
 	if (dev->fs_hcnt && dev->fs_lcnt) {

drivers/i2c/busses/i2c-designware-core.h

@@ -99,6 +99,8 @@ struct dw_i2c_dev {
 	unsigned int		rx_fifo_depth;
 	int			rx_outstanding;
 	u32			sda_hold_time;
+	u32			sda_falling_time;
+	u32			scl_falling_time;
 	u16			ss_hcnt;
 	u16			ss_lcnt;
 	u16			fs_hcnt;

drivers/i2c/busses/i2c-designware-pcidrv.c

@@ -54,6 +54,16 @@ enum dw_pci_ctl_id_t {
 	medfield_3,
 	medfield_4,
 	medfield_5,
+
+	baytrail,
+};
+
+struct dw_scl_sda_cfg {
+	u32 ss_hcnt;
+	u32 fs_hcnt;
+	u32 ss_lcnt;
+	u32 fs_lcnt;
+	u32 sda_hold;
 };
 
 struct dw_pci_controller {
@@ -62,12 +72,29 @@ struct dw_pci_controller {
 	u32 tx_fifo_depth;
 	u32 rx_fifo_depth;
 	u32 clk_khz;
+	u32 functionality;
+	struct dw_scl_sda_cfg *scl_sda_cfg;
 };
 
 #define INTEL_MID_STD_CFG  (DW_IC_CON_MASTER |			\
 				DW_IC_CON_SLAVE_DISABLE |	\
 				DW_IC_CON_RESTART_EN)
 
+#define DW_DEFAULT_FUNCTIONALITY (I2C_FUNC_I2C |			\
+					I2C_FUNC_SMBUS_BYTE |		\
+					I2C_FUNC_SMBUS_BYTE_DATA |	\
+					I2C_FUNC_SMBUS_WORD_DATA |	\
+					I2C_FUNC_SMBUS_I2C_BLOCK)
+
+/* BayTrail HCNT/LCNT/SDA hold time */
+static struct dw_scl_sda_cfg byt_config = {
+	.ss_hcnt = 0x200,
+	.fs_hcnt = 0x55,
+	.ss_lcnt = 0x200,
+	.fs_lcnt = 0x99,
+	.sda_hold = 0x6,
+};
+
 static struct  dw_pci_controller  dw_pci_controllers[] = {
 	[moorestown_0] = {
 		.bus_num     = 0,
@@ -132,75 +159,40 @@ static struct  dw_pci_controller  dw_pci_controllers[] = {
 		.rx_fifo_depth = 32,
 		.clk_khz      = 25000,
 	},
+	[baytrail] = {
+		.bus_num = -1,
+		.bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
+		.tx_fifo_depth = 32,
+		.rx_fifo_depth = 32,
+		.clk_khz = 100000,
+		.functionality = I2C_FUNC_10BIT_ADDR,
+		.scl_sda_cfg = &byt_config,
+	},
 };
 static struct i2c_algorithm i2c_dw_algo = {
 	.master_xfer	= i2c_dw_xfer,
 	.functionality	= i2c_dw_func,
 };
 
+#ifdef CONFIG_PM
 static int i2c_dw_pci_suspend(struct device *dev)
 {
 	struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
-	struct dw_i2c_dev *i2c = pci_get_drvdata(pdev);
-	int err;
-
-
-	i2c_dw_disable(i2c);
-
-	err = pci_save_state(pdev);
-	if (err) {
-		dev_err(&pdev->dev, "pci_save_state failed\n");
-		return err;
-	}
-
-	err = pci_set_power_state(pdev, PCI_D3hot);
-	if (err) {
-		dev_err(&pdev->dev, "pci_set_power_state failed\n");
-		return err;
-	}
 
+	i2c_dw_disable(pci_get_drvdata(pdev));
 	return 0;
 }
 
 static int i2c_dw_pci_resume(struct device *dev)
 {
 	struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
-	struct dw_i2c_dev *i2c = pci_get_drvdata(pdev);
-	int err;
-	u32 enabled;
 
-	enabled = i2c_dw_is_enabled(i2c);
-	if (enabled)
-		return 0;
-
-	err = pci_set_power_state(pdev, PCI_D0);
-	if (err) {
-		dev_err(&pdev->dev, "pci_set_power_state() failed\n");
-		return err;
-	}
-
-	pci_restore_state(pdev);
-
-	i2c_dw_init(i2c);
-	return 0;
+	return i2c_dw_init(pci_get_drvdata(pdev));
 }
+#endif
 
-static int i2c_dw_pci_runtime_idle(struct device *dev)
-{
-	int err = pm_schedule_suspend(dev, 500);
-	dev_dbg(dev, "runtime_idle called\n");
-
-	if (err != 0)
-		return 0;
-	return -EBUSY;
-}
-
-static const struct dev_pm_ops i2c_dw_pm_ops = {
-	.resume         = i2c_dw_pci_resume,
-	.suspend        = i2c_dw_pci_suspend,
-	SET_RUNTIME_PM_OPS(i2c_dw_pci_suspend, i2c_dw_pci_resume,
-			   i2c_dw_pci_runtime_idle)
-};
+static UNIVERSAL_DEV_PM_OPS(i2c_dw_pm_ops, i2c_dw_pci_suspend,
+			    i2c_dw_pci_resume, NULL);
 
 static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)
 {
@@ -214,6 +206,7 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
 	struct i2c_adapter *adap;
 	int r;
 	struct  dw_pci_controller *controller;
+	struct dw_scl_sda_cfg *cfg;
 
 	if (id->driver_data >= ARRAY_SIZE(dw_pci_controllers)) {
 		dev_err(&pdev->dev, "%s: invalid driver data %ld\n", __func__,
@@ -247,13 +240,18 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
 	dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;
 	dev->base = pcim_iomap_table(pdev)[0];
 	dev->dev = &pdev->dev;
-	dev->functionality =
-		I2C_FUNC_I2C |
-		I2C_FUNC_SMBUS_BYTE |
-		I2C_FUNC_SMBUS_BYTE_DATA |
-		I2C_FUNC_SMBUS_WORD_DATA |
-		I2C_FUNC_SMBUS_I2C_BLOCK;
+	dev->functionality = controller->functionality |
+				DW_DEFAULT_FUNCTIONALITY;
+
 	dev->master_cfg =  controller->bus_cfg;
+	if (controller->scl_sda_cfg) {
+		cfg = controller->scl_sda_cfg;
+		dev->ss_hcnt = cfg->ss_hcnt;
+		dev->fs_hcnt = cfg->fs_hcnt;
+		dev->ss_lcnt = cfg->ss_lcnt;
+		dev->fs_lcnt = cfg->fs_lcnt;
+		dev->sda_hold_time = cfg->sda_hold;
+	}
 
 	pci_set_drvdata(pdev, dev);
 
@@ -270,8 +268,8 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
 	adap->algo = &i2c_dw_algo;
 	adap->dev.parent = &pdev->dev;
 	adap->nr = controller->bus_num;
-	snprintf(adap->name, sizeof(adap->name), "i2c-designware-pci-%d",
-		adap->nr);
+
+	snprintf(adap->name, sizeof(adap->name), "i2c-designware-pci");
 
 	r = devm_request_irq(&pdev->dev, pdev->irq, i2c_dw_isr, IRQF_SHARED,
 			adap->name, dev);
@@ -290,6 +288,7 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
 
 	pm_runtime_set_autosuspend_delay(&pdev->dev, 1000);
 	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_put_autosuspend(&pdev->dev);
 	pm_runtime_allow(&pdev->dev);
 
 	return 0;
@@ -309,7 +308,7 @@ static void i2c_dw_pci_remove(struct pci_dev *pdev)
 /* work with hotplug and coldplug */
 MODULE_ALIAS("i2c_designware-pci");
 
-static DEFINE_PCI_DEVICE_TABLE(i2_designware_pci_ids) = {
+static const struct pci_device_id i2_designware_pci_ids[] = {
 	/* Moorestown */
 	{ PCI_VDEVICE(INTEL, 0x0802), moorestown_0 },
 	{ PCI_VDEVICE(INTEL, 0x0803), moorestown_1 },
@@ -321,6 +320,14 @@ static DEFINE_PCI_DEVICE_TABLE(i2_designware_pci_ids) = {
 	{ PCI_VDEVICE(INTEL, 0x082C), medfield_0 },
 	{ PCI_VDEVICE(INTEL, 0x082D), medfield_1 },
 	{ PCI_VDEVICE(INTEL, 0x082E), medfield_2 },
+	/* Baytrail */
+	{ PCI_VDEVICE(INTEL, 0x0F41), baytrail },
+	{ PCI_VDEVICE(INTEL, 0x0F42), baytrail },
+	{ PCI_VDEVICE(INTEL, 0x0F43), baytrail },
+	{ PCI_VDEVICE(INTEL, 0x0F44), baytrail },
+	{ PCI_VDEVICE(INTEL, 0x0F45), baytrail },
+	{ PCI_VDEVICE(INTEL, 0x0F46), baytrail },
+	{ PCI_VDEVICE(INTEL, 0x0F47), baytrail },
 	{ 0,}
 };
 MODULE_DEVICE_TABLE(pci, i2_designware_pci_ids);

drivers/i2c/busses/i2c-designware-platdrv.c

@@ -159,6 +159,13 @@ static int dw_i2c_probe(struct platform_device *pdev)
 					"i2c-sda-hold-time-ns", &ht);
 		dev->sda_hold_time = div_u64((u64)ic_clk * ht + 500000,
 					     1000000);
+
+		of_property_read_u32(pdev->dev.of_node,
+				     "i2c-sda-falling-time-ns",
+				     &dev->sda_falling_time);
+		of_property_read_u32(pdev->dev.of_node,
+				     "i2c-scl-falling-time-ns",
+				     &dev->scl_falling_time);
 	}
 
 	dev->functionality =
@@ -195,7 +202,7 @@ static int dw_i2c_probe(struct platform_device *pdev)
 	adap = &dev->adapter;
 	i2c_set_adapdata(adap, dev);
 	adap->owner = THIS_MODULE;
-	adap->class = I2C_CLASS_HWMON;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_DEPRECATED;
 	strlcpy(adap->name, "Synopsys DesignWare I2C adapter",
 			sizeof(adap->name));
 	adap->algo = &i2c_dw_algo;

drivers/i2c/busses/i2c-eg20t.c

@@ -186,7 +186,7 @@ static DEFINE_MUTEX(pch_mutex);
 #define PCI_DEVICE_ID_ML7223_I2C	0x8010
 #define PCI_DEVICE_ID_ML7831_I2C	0x8817
 
-static DEFINE_PCI_DEVICE_TABLE(pch_pcidev_id) = {
+static const struct pci_device_id pch_pcidev_id[] = {
 	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH_I2C),   1, },
 	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7213_I2C), 2, },
 	{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7223_I2C), 1, },

drivers/i2c/busses/i2c-exynos5.c

@@ -566,7 +566,7 @@ static int exynos5_i2c_xfer_msg(struct exynos5_i2c *i2c,
 static int exynos5_i2c_xfer(struct i2c_adapter *adap,
 			struct i2c_msg *msgs, int num)
 {
-	struct exynos5_i2c *i2c = (struct exynos5_i2c *)adap->algo_data;
+	struct exynos5_i2c *i2c = adap->algo_data;
 	int i = 0, ret = 0, stop = 0;
 
 	if (i2c->suspended) {
@@ -715,6 +715,7 @@ static int exynos5_i2c_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
 static int exynos5_i2c_suspend_noirq(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -745,6 +746,7 @@ static int exynos5_i2c_resume_noirq(struct device *dev)
 
 	return 0;
 }
+#endif
 
 static SIMPLE_DEV_PM_OPS(exynos5_i2c_dev_pm_ops, exynos5_i2c_suspend_noirq,
 			 exynos5_i2c_resume_noirq);

drivers/i2c/busses/i2c-gpio.c

@@ -94,6 +94,9 @@ static int of_i2c_gpio_get_pins(struct device_node *np,
 	*sda_pin = of_get_gpio(np, 0);
 	*scl_pin = of_get_gpio(np, 1);
 
+	if (*sda_pin == -EPROBE_DEFER || *scl_pin == -EPROBE_DEFER)
+		return -EPROBE_DEFER;
+
 	if (!gpio_is_valid(*sda_pin) || !gpio_is_valid(*scl_pin)) {
 		pr_err("%s: invalid GPIO pins, sda=%d/scl=%d\n",
 		       np->full_name, *sda_pin, *scl_pin);

drivers/i2c/busses/i2c-hydra.c

@@ -104,7 +104,7 @@ static struct i2c_adapter hydra_adap = {
 	.algo_data	= &hydra_bit_data,
 };
 
-static DEFINE_PCI_DEVICE_TABLE(hydra_ids) = {
+static const struct pci_device_id hydra_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_HYDRA) },
 	{ 0, }
 };

drivers/i2c/busses/i2c-i801.c

@@ -60,6 +60,7 @@
   Wellsburg (PCH) MS    0x8d7f     32     hard     yes     yes     yes
   Coleto Creek (PCH)    0x23b0     32     hard     yes     yes     yes
   Wildcat Point-LP (PCH)   0x9ca2     32     hard     yes     yes     yes
+  BayTrail (SOC)        0x0f12     32     hard     yes     yes     yes
 
   Features supported by this driver:
   Software PEC                     no
@@ -161,6 +162,7 @@
 				 STATUS_ERROR_FLAGS)
 
 /* Older devices have their ID defined in <linux/pci_ids.h> */
+#define PCI_DEVICE_ID_INTEL_BAYTRAIL_SMBUS	0x0f12
 #define PCI_DEVICE_ID_INTEL_COUGARPOINT_SMBUS	0x1c22
 #define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS	0x1d22
 /* Patsburg also has three 'Integrated Device Function' SMBus controllers */
@@ -789,7 +791,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 	.functionality	= i801_func,
 };
 
-static DEFINE_PCI_DEVICE_TABLE(i801_ids) = {
+static const struct pci_device_id i801_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_2) },
@@ -822,6 +824,7 @@ static DEFINE_PCI_DEVICE_TABLE(i801_ids) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_WELLSBURG_SMBUS_MS2) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_COLETOCREEK_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_SMBUS) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BAYTRAIL_SMBUS) },
 	{ 0, }
 };
 

drivers/i2c/busses/i2c-ismt.c

@@ -182,7 +182,7 @@ struct ismt_priv {
 /**
  * ismt_ids - PCI device IDs supported by this driver
  */
-static DEFINE_PCI_DEVICE_TABLE(ismt_ids) = {
+static const struct pci_device_id ismt_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_S1200_SMT0) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_S1200_SMT1) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_AVOTON_SMT) },

drivers/i2c/busses/i2c-mv64xxx.c

@@ -17,6 +17,7 @@
 #include <linux/interrupt.h>
 #include <linux/mv643xx_i2c.h>
 #include <linux/platform_device.h>
+#include <linux/reset.h>
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
@@ -97,7 +98,6 @@ enum {
 enum {
 	MV64XXX_I2C_ACTION_INVALID,
 	MV64XXX_I2C_ACTION_CONTINUE,
-	MV64XXX_I2C_ACTION_SEND_START,
 	MV64XXX_I2C_ACTION_SEND_RESTART,
 	MV64XXX_I2C_ACTION_OFFLOAD_RESTART,
 	MV64XXX_I2C_ACTION_SEND_ADDR_1,
@@ -148,6 +148,8 @@ struct mv64xxx_i2c_data {
 	bool			offload_enabled;
 /* 5us delay in order to avoid repeated start timing violation */
 	bool			errata_delay;
+	struct reset_control	*rstc;
+	bool			irq_clear_inverted;
 };
 
 static struct mv64xxx_i2c_regs mv64xxx_i2c_regs_mv64xxx = {
@@ -176,11 +178,6 @@ mv64xxx_i2c_prepare_for_io(struct mv64xxx_i2c_data *drv_data,
 {
 	u32	dir = 0;
 
-	drv_data->msg = msg;
-	drv_data->byte_posn = 0;
-	drv_data->bytes_left = msg->len;
-	drv_data->aborting = 0;
-	drv_data->rc = 0;
 	drv_data->cntl_bits = MV64XXX_I2C_REG_CONTROL_ACK |
 		MV64XXX_I2C_REG_CONTROL_INTEN | MV64XXX_I2C_REG_CONTROL_TWSIEN;
 
@@ -206,11 +203,6 @@ static int mv64xxx_i2c_offload_msg(struct mv64xxx_i2c_data *drv_data)
 	if (!drv_data->offload_enabled)
 		return -EOPNOTSUPP;
 
-	drv_data->msg = msg;
-	drv_data->byte_posn = 0;
-	drv_data->bytes_left = msg->len;
-	drv_data->aborting = 0;
-	drv_data->rc = 0;
 	/* Only regular transactions can be offloaded */
 	if ((msg->flags & ~(I2C_M_TEN | I2C_M_RD)) != 0)
 		return -EINVAL;
@@ -419,6 +411,23 @@ mv64xxx_i2c_fsm(struct mv64xxx_i2c_data *drv_data, u32 status)
 	}
 }
 
+static void mv64xxx_i2c_send_start(struct mv64xxx_i2c_data *drv_data)
+{
+	drv_data->msg = drv_data->msgs;
+	drv_data->byte_posn = 0;
+	drv_data->bytes_left = drv_data->msg->len;
+	drv_data->aborting = 0;
+	drv_data->rc = 0;
+
+	/* Can we offload this msg ? */
+	if (mv64xxx_i2c_offload_msg(drv_data) < 0) {
+		/* No, switch to standard path */
+		mv64xxx_i2c_prepare_for_io(drv_data, drv_data->msgs);
+		writel(drv_data->cntl_bits | MV64XXX_I2C_REG_CONTROL_START,
+			drv_data->reg_base + drv_data->reg_offsets.control);
+	}
+}
+
 static void
 mv64xxx_i2c_do_action(struct mv64xxx_i2c_data *drv_data)
 {
@@ -435,14 +444,8 @@ mv64xxx_i2c_do_action(struct mv64xxx_i2c_data *drv_data)
 
 		drv_data->msgs++;
 		drv_data->num_msgs--;
-		if (mv64xxx_i2c_offload_msg(drv_data) < 0) {
-			drv_data->cntl_bits |= MV64XXX_I2C_REG_CONTROL_START;
-			writel(drv_data->cntl_bits,
-			drv_data->reg_base + drv_data->reg_offsets.control);
+		mv64xxx_i2c_send_start(drv_data);
 
-			/* Setup for the next message */
-			mv64xxx_i2c_prepare_for_io(drv_data, drv_data->msgs);
-		}
 		if (drv_data->errata_delay)
 			udelay(5);
 
@@ -459,16 +462,6 @@ mv64xxx_i2c_do_action(struct mv64xxx_i2c_data *drv_data)
 			drv_data->reg_base + drv_data->reg_offsets.control);
 		break;
 
-	case MV64XXX_I2C_ACTION_SEND_START:
-		/* Can we offload this msg ? */
-		if (mv64xxx_i2c_offload_msg(drv_data) < 0) {
-			/* No, switch to standard path */
-			mv64xxx_i2c_prepare_for_io(drv_data, drv_data->msgs);
-			writel(drv_data->cntl_bits | MV64XXX_I2C_REG_CONTROL_START,
-				drv_data->reg_base + drv_data->reg_offsets.control);
-		}
-		break;
-
 	case MV64XXX_I2C_ACTION_SEND_ADDR_1:
 		writel(drv_data->addr1,
 			drv_data->reg_base + drv_data->reg_offsets.data);
@@ -566,6 +559,11 @@ mv64xxx_i2c_intr(int irq, void *dev_id)
 		status = readl(drv_data->reg_base + drv_data->reg_offsets.status);
 		mv64xxx_i2c_fsm(drv_data, status);
 		mv64xxx_i2c_do_action(drv_data);
+
+		if (drv_data->irq_clear_inverted)
+			writel(drv_data->cntl_bits | MV64XXX_I2C_REG_CONTROL_IFLG,
+			       drv_data->reg_base + drv_data->reg_offsets.control);
+
 		rc = IRQ_HANDLED;
 	}
 	spin_unlock_irqrestore(&drv_data->lock, flags);
@@ -626,12 +624,11 @@ mv64xxx_i2c_execute_msg(struct mv64xxx_i2c_data *drv_data, struct i2c_msg *msg,
 
 	spin_lock_irqsave(&drv_data->lock, flags);
 
-	drv_data->action = MV64XXX_I2C_ACTION_SEND_START;
 	drv_data->state = MV64XXX_I2C_STATE_WAITING_FOR_START_COND;
 
 	drv_data->send_stop = is_last;
 	drv_data->block = 1;
-	mv64xxx_i2c_do_action(drv_data);
+	mv64xxx_i2c_send_start(drv_data);
 	spin_unlock_irqrestore(&drv_data->lock, flags);
 
 	mv64xxx_i2c_wait_for_completion(drv_data);
@@ -685,6 +682,7 @@ static const struct i2c_algorithm mv64xxx_i2c_algo = {
  */
 static const struct of_device_id mv64xxx_i2c_of_match_table[] = {
 	{ .compatible = "allwinner,sun4i-i2c", .data = &mv64xxx_i2c_regs_sun4i},
+	{ .compatible = "allwinner,sun6i-a31-i2c", .data = &mv64xxx_i2c_regs_sun4i},
 	{ .compatible = "marvell,mv64xxx-i2c", .data = &mv64xxx_i2c_regs_mv64xxx},
 	{ .compatible = "marvell,mv78230-i2c", .data = &mv64xxx_i2c_regs_mv64xxx},
 	{ .compatible = "marvell,mv78230-a0-i2c", .data = &mv64xxx_i2c_regs_mv64xxx},
@@ -759,6 +757,16 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data,
 	}
 	drv_data->irq = irq_of_parse_and_map(np, 0);
 
+	drv_data->rstc = devm_reset_control_get_optional(dev, NULL);
+	if (IS_ERR(drv_data->rstc)) {
+		if (PTR_ERR(drv_data->rstc) == -EPROBE_DEFER) {
+			rc = -EPROBE_DEFER;
+			goto out;
+		}
+	} else {
+		reset_control_deassert(drv_data->rstc);
+	}
+
 	/* Its not yet defined how timeouts will be specified in device tree.
 	 * So hard code the value to 1 second.
 	 */
@@ -783,6 +791,10 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data,
 		drv_data->offload_enabled = false;
 		drv_data->errata_delay = true;
 	}
+
+	if (of_device_is_compatible(np, "allwinner,sun6i-a31-i2c"))
+		drv_data->irq_clear_inverted = true;
+
 out:
 	return rc;
 #endif
@@ -845,13 +857,13 @@ mv64xxx_i2c_probe(struct platform_device *pd)
 	}
 	if (drv_data->irq < 0) {
 		rc = -ENXIO;
-		goto exit_clk;
+		goto exit_reset;
 	}
 
 	drv_data->adapter.dev.parent = &pd->dev;
 	drv_data->adapter.algo = &mv64xxx_i2c_algo;
 	drv_data->adapter.owner = THIS_MODULE;
-	drv_data->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
+	drv_data->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD | I2C_CLASS_DEPRECATED;
 	drv_data->adapter.nr = pd->id;
 	drv_data->adapter.dev.of_node = pd->dev.of_node;
 	platform_set_drvdata(pd, drv_data);
@@ -865,7 +877,7 @@ mv64xxx_i2c_probe(struct platform_device *pd)
 		dev_err(&drv_data->adapter.dev,
 			"mv64xxx: Can't register intr handler irq%d: %d\n",
 			drv_data->irq, rc);
-		goto exit_clk;
+		goto exit_reset;
 	} else if ((rc = i2c_add_numbered_adapter(&drv_data->adapter)) != 0) {
 		dev_err(&drv_data->adapter.dev,
 			"mv64xxx: Can't add i2c adapter, rc: %d\n", -rc);
@@ -876,6 +888,9 @@ mv64xxx_i2c_probe(struct platform_device *pd)
 
 exit_free_irq:
 	free_irq(drv_data->irq, drv_data);
+exit_reset:
+	if (!IS_ERR_OR_NULL(drv_data->rstc))
+		reset_control_assert(drv_data->rstc);
 exit_clk:
 #if defined(CONFIG_HAVE_CLK)
 	/* Not all platforms have a clk */
@@ -894,6 +909,8 @@ mv64xxx_i2c_remove(struct platform_device *dev)
 
 	i2c_del_adapter(&drv_data->adapter);
 	free_irq(drv_data->irq, drv_data);
+	if (!IS_ERR_OR_NULL(drv_data->rstc))
+		reset_control_assert(drv_data->rstc);
 #if defined(CONFIG_HAVE_CLK)
 	/* Not all platforms have a clk */
 	if (!IS_ERR(drv_data->clk)) {

drivers/i2c/busses/i2c-mxs.c

@@ -806,7 +806,6 @@ static int mxs_i2c_probe(struct platform_device *pdev)
 	struct mxs_i2c_dev *i2c;
 	struct i2c_adapter *adap;
 	struct resource *res;
-	resource_size_t res_size;
 	int err, irq;
 
 	i2c = devm_kzalloc(dev, sizeof(struct mxs_i2c_dev), GFP_KERNEL);
@@ -819,18 +818,13 @@ static int mxs_i2c_probe(struct platform_device *pdev)
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	irq = platform_get_irq(pdev, 0);
-
-	if (!res || irq < 0)
-		return -ENOENT;
+	i2c->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(i2c->regs))
+		return PTR_ERR(i2c->regs);
 
-	res_size = resource_size(res);
-	if (!devm_request_mem_region(dev, res->start, res_size, res->name))
-		return -EBUSY;
-
-	i2c->regs = devm_ioremap_nocache(dev, res->start, res_size);
-	if (!i2c->regs)
-		return -EBUSY;
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
 
 	err = devm_request_irq(dev, irq, mxs_i2c_isr, 0, dev_name(dev), i2c);
 	if (err)

drivers/i2c/busses/i2c-nforce2.c

@@ -306,7 +306,7 @@ static struct i2c_algorithm smbus_algorithm = {
 };
 
 
-static DEFINE_PCI_DEVICE_TABLE(nforce2_ids) = {
+static const struct pci_device_id nforce2_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_SMBUS) },

drivers/i2c/busses/i2c-ocores.c

@@ -246,7 +246,7 @@ static const struct i2c_algorithm ocores_algorithm = {
 static struct i2c_adapter ocores_adapter = {
 	.owner		= THIS_MODULE,
 	.name		= "i2c-ocores",
-	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD | I2C_CLASS_DEPRECATED,
 	.algo		= &ocores_algorithm,
 };
 

drivers/i2c/busses/i2c-omap.c

@@ -636,7 +636,7 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
 	int r;
 
 	r = pm_runtime_get_sync(dev->dev);
-	if (IS_ERR_VALUE(r))
+	if (r < 0)
 		goto out;
 
 	r = omap_i2c_wait_for_bb(dev);
@@ -1155,7 +1155,7 @@ omap_i2c_probe(struct platform_device *pdev)
 	pm_runtime_use_autosuspend(dev->dev);
 
 	r = pm_runtime_get_sync(dev->dev);
-	if (IS_ERR_VALUE(r))
+	if (r < 0)
 		goto err_free_mem;
 
 	/*
@@ -1238,7 +1238,7 @@ omap_i2c_probe(struct platform_device *pdev)
 	adap = &dev->adapter;
 	i2c_set_adapdata(adap, dev);
 	adap->owner = THIS_MODULE;
-	adap->class = I2C_CLASS_HWMON;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_DEPRECATED;
 	strlcpy(adap->name, "OMAP I2C adapter", sizeof(adap->name));
 	adap->algo = &omap_i2c_algo;
 	adap->dev.parent = &pdev->dev;
@@ -1276,7 +1276,7 @@ static int omap_i2c_remove(struct platform_device *pdev)
 
 	i2c_del_adapter(&dev->adapter);
 	ret = pm_runtime_get_sync(&pdev->dev);
-	if (IS_ERR_VALUE(ret))
+	if (ret < 0)
 		return ret;
 
 	omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);

drivers/i2c/busses/i2c-pasemi.c

@@ -401,7 +401,7 @@ static void pasemi_smb_remove(struct pci_dev *dev)
 	kfree(smbus);
 }
 
-static DEFINE_PCI_DEVICE_TABLE(pasemi_smb_ids) = {
+static const struct pci_device_id pasemi_smb_ids[] = {
 	{ PCI_DEVICE(0x1959, 0xa003) },
 	{ 0, }
 };

drivers/i2c/busses/i2c-piix4.c

@@ -540,7 +540,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 	.functionality	= piix4_func,
 };
 
-static DEFINE_PCI_DEVICE_TABLE(piix4_ids) = {
+static const struct pci_device_id piix4_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_3) },

drivers/i2c/busses/i2c-pxa-pci.c

@@ -148,7 +148,7 @@ static void ce4100_i2c_remove(struct pci_dev *dev)
 	kfree(sds);
 }
 
-static DEFINE_PCI_DEVICE_TABLE(ce4100_i2c_devices) = {
+static const struct pci_device_id ce4100_i2c_devices[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2e68)},
 	{ },
 };

drivers/i2c/busses/i2c-rcar.c

@@ -638,6 +638,7 @@ static const struct of_device_id rcar_i2c_dt_ids[] = {
 	{ .compatible = "renesas,i2c-r8a7778", .data = (void *)I2C_RCAR_GEN1 },
 	{ .compatible = "renesas,i2c-r8a7779", .data = (void *)I2C_RCAR_GEN1 },
 	{ .compatible = "renesas,i2c-r8a7790", .data = (void *)I2C_RCAR_GEN2 },
+	{ .compatible = "renesas,i2c-r8a7791", .data = (void *)I2C_RCAR_GEN2 },
 	{},
 };
 MODULE_DEVICE_TABLE(of, rcar_i2c_dt_ids);
@@ -691,7 +692,7 @@ static int rcar_i2c_probe(struct platform_device *pdev)
 	adap			= &priv->adap;
 	adap->nr		= pdev->id;
 	adap->algo		= &rcar_i2c_algo;
-	adap->class		= I2C_CLASS_HWMON | I2C_CLASS_SPD;
+	adap->class		= I2C_CLASS_HWMON | I2C_CLASS_SPD | I2C_CLASS_DEPRECATED;
 	adap->retries		= 3;
 	adap->dev.parent	= dev;
 	adap->dev.of_node	= dev->of_node;

drivers/i2c/busses/i2c-s3c2410.c

@@ -601,6 +601,31 @@ static irqreturn_t s3c24xx_i2c_irq(int irqno, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+/*
+ * Disable the bus so that we won't get any interrupts from now on, or try
+ * to drive any lines. This is the default state when we don't have
+ * anything to send/receive.
+ *
+ * If there is an event on the bus, or we have a pre-existing event at
+ * kernel boot time, we may not notice the event and the I2C controller
+ * will lock the bus with the I2C clock line low indefinitely.
+ */
+static inline void s3c24xx_i2c_disable_bus(struct s3c24xx_i2c *i2c)
+{
+	unsigned long tmp;
+
+	/* Stop driving the I2C pins */
+	tmp = readl(i2c->regs + S3C2410_IICSTAT);
+	tmp &= ~S3C2410_IICSTAT_TXRXEN;
+	writel(tmp, i2c->regs + S3C2410_IICSTAT);
+
+	/* We don't expect any interrupts now, and don't want send acks */
+	tmp = readl(i2c->regs + S3C2410_IICCON);
+	tmp &= ~(S3C2410_IICCON_IRQEN | S3C2410_IICCON_IRQPEND |
+		S3C2410_IICCON_ACKEN);
+	writel(tmp, i2c->regs + S3C2410_IICCON);
+}
+
 
 /* s3c24xx_i2c_set_master
  *
@@ -735,7 +760,11 @@ static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c,
 
 	s3c24xx_i2c_wait_idle(i2c);
 
+	s3c24xx_i2c_disable_bus(i2c);
+
  out:
+	i2c->state = STATE_IDLE;
+
 	return ret;
 }
 
@@ -1004,7 +1033,6 @@ static void s3c24xx_i2c_dt_gpio_free(struct s3c24xx_i2c *i2c)
 
 static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c)
 {
-	unsigned long iicon = S3C2410_IICCON_IRQEN | S3C2410_IICCON_ACKEN;
 	struct s3c2410_platform_i2c *pdata;
 	unsigned int freq;
 
@@ -1018,12 +1046,12 @@ static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c)
 
 	dev_info(i2c->dev, "slave address 0x%02x\n", pdata->slave_addr);
 
-	writel(iicon, i2c->regs + S3C2410_IICCON);
+	writel(0, i2c->regs + S3C2410_IICCON);
+	writel(0, i2c->regs + S3C2410_IICSTAT);
 
 	/* we need to work out the divisors for the clock... */
 
 	if (s3c24xx_i2c_clockrate(i2c, &freq) != 0) {
-		writel(0, i2c->regs + S3C2410_IICCON);
 		dev_err(i2c->dev, "cannot meet bus frequency required\n");
 		return -EINVAL;
 	}
@@ -1031,7 +1059,8 @@ static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c)
 	/* todo - check that the i2c lines aren't being dragged anywhere */
 
 	dev_info(i2c->dev, "bus frequency set to %d KHz\n", freq);
-	dev_dbg(i2c->dev, "S3C2410_IICCON=0x%02lx\n", iicon);
+	dev_dbg(i2c->dev, "S3C2410_IICCON=0x%02x\n",
+		readl(i2c->regs + S3C2410_IICCON));
 
 	return 0;
 }
@@ -1106,7 +1135,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
 	i2c->adap.owner   = THIS_MODULE;
 	i2c->adap.algo    = &s3c24xx_i2c_algorithm;
 	i2c->adap.retries = 2;
-	i2c->adap.class   = I2C_CLASS_HWMON | I2C_CLASS_SPD;
+	i2c->adap.class   = I2C_CLASS_HWMON | I2C_CLASS_SPD | I2C_CLASS_DEPRECATED;
 	i2c->tx_setup     = 50;
 
 	init_waitqueue_head(&i2c->wait);

drivers/i2c/busses/i2c-sirf.c

@@ -312,7 +312,7 @@ static int i2c_sirfsoc_probe(struct platform_device *pdev)
 		goto out;
 	}
 	adap = &siic->adapter;
-	adap->class = I2C_CLASS_HWMON;
+	adap->class = I2C_CLASS_HWMON | I2C_CLASS_DEPRECATED;
 
 	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	siic->base = devm_ioremap_resource(&pdev->dev, mem_res);

drivers/i2c/busses/i2c-sis5595.c

@@ -369,7 +369,7 @@ static struct i2c_adapter sis5595_adapter = {
 	.algo		= &smbus_algorithm,
 };
 
-static DEFINE_PCI_DEVICE_TABLE(sis5595_ids) = {
+static const struct pci_device_id sis5595_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, 
 	{ 0, }
 };

drivers/i2c/busses/i2c-sis630.c

@@ -510,7 +510,7 @@ static struct i2c_adapter sis630_adapter = {
 	.retries	= 3
 };
 
-static DEFINE_PCI_DEVICE_TABLE(sis630_ids) = {
+static const struct pci_device_id sis630_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_964) },

drivers/i2c/busses/i2c-sis96x.c

@@ -244,7 +244,7 @@ static struct i2c_adapter sis96x_adapter = {
 	.algo		= &smbus_algorithm,
 };
 
-static DEFINE_PCI_DEVICE_TABLE(sis96x_ids) = {
+static const struct pci_device_id sis96x_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_SMBUS) },
 	{ 0, }
 };

drivers/i2c/busses/i2c-st.c

@@ -574,7 +574,7 @@ static irqreturn_t st_i2c_isr_thread(int irq, void *data)
 		writel_relaxed(it, i2c_dev->base + SSC_IEN);
 
 		st_i2c_set_bits(i2c_dev->base + SSC_I2C, SSC_I2C_STOPG);
-		c->result = -EIO;
+		c->result = -EAGAIN;
 		break;
 
 	default:

drivers/i2c/busses/i2c-stu300.c

@@ -911,7 +911,7 @@ static int stu300_probe(struct platform_device *pdev)
 	adap = &dev->adapter;
 	adap->owner = THIS_MODULE;
 	/* DDC class but actually often used for more generic I2C */
-	adap->class = I2C_CLASS_DDC;
+	adap->class = I2C_CLASS_DDC | I2C_CLASS_DEPRECATED;
 	strlcpy(adap->name, "ST Microelectronics DDC I2C adapter",
 		sizeof(adap->name));
 	adap->nr = bus_nr;

drivers/i2c/busses/i2c-tegra.c

@@ -794,7 +794,7 @@ static int tegra_i2c_probe(struct platform_device *pdev)
 
 	i2c_set_adapdata(&i2c_dev->adapter, i2c_dev);
 	i2c_dev->adapter.owner = THIS_MODULE;
-	i2c_dev->adapter.class = I2C_CLASS_HWMON;
+	i2c_dev->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_DEPRECATED;
 	strlcpy(i2c_dev->adapter.name, "Tegra I2C adapter",
 		sizeof(i2c_dev->adapter.name));
 	i2c_dev->adapter.algo = &tegra_i2c_algo;

drivers/i2c/busses/i2c-via.c

@@ -88,7 +88,7 @@ static struct i2c_adapter vt586b_adapter = {
 };
 
 
-static DEFINE_PCI_DEVICE_TABLE(vt586b_ids) = {
+static const struct pci_device_id vt586b_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3) },
 	{ 0, }
 };

drivers/i2c/busses/i2c-viapro.c

@@ -442,7 +442,7 @@ static int vt596_probe(struct pci_dev *pdev,
 	return error;
 }
 
-static DEFINE_PCI_DEVICE_TABLE(vt596_ids) = {
+static const struct pci_device_id vt596_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596_3),
 	  .driver_data = SMBBA1 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596B_3),

drivers/i2c/busses/i2c-xiic.c

@@ -684,7 +684,7 @@ static const struct i2c_algorithm xiic_algorithm = {
 static struct i2c_adapter xiic_adapter = {
 	.owner		= THIS_MODULE,
 	.name		= DRIVER_NAME,
-	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD,
+	.class		= I2C_CLASS_HWMON | I2C_CLASS_SPD | I2C_CLASS_DEPRECATED,
 	.algo		= &xiic_algorithm,
 };
 

drivers/i2c/busses/scx200_acb.c

@@ -556,7 +556,7 @@ static struct platform_driver scx200_pci_driver = {
 	.remove = scx200_remove,
 };
 
-static DEFINE_PCI_DEVICE_TABLE(scx200_isa) = {
+static const struct pci_device_id scx200_isa[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SCx200_BRIDGE) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SC1100_BRIDGE) },
 	{ 0, }

drivers/i2c/i2c-core.c

@@ -48,10 +48,13 @@
 #include <linux/rwsem.h>
 #include <linux/pm_runtime.h>
 #include <linux/acpi.h>
+#include <linux/jump_label.h>
 #include <asm/uaccess.h>
 
 #include "i2c-core.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/i2c.h>
 
 /* core_lock protects i2c_adapter_idr, and guarantees
    that device detection, deletion of detected devices, and attach_adapter
@@ -62,6 +65,18 @@ static DEFINE_IDR(i2c_adapter_idr);
 static struct device_type i2c_client_type;
 static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver);
 
+static struct static_key i2c_trace_msg = STATIC_KEY_INIT_FALSE;
+
+void i2c_transfer_trace_reg(void)
+{
+	static_key_slow_inc(&i2c_trace_msg);
+}
+
+void i2c_transfer_trace_unreg(void)
+{
+	static_key_slow_dec(&i2c_trace_msg);
+}
+
 /* ------------------------------------------------------------------------- */
 
 static const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
@@ -1686,6 +1701,7 @@ static void __exit i2c_exit(void)
 	class_compat_unregister(i2c_adapter_compat_class);
 #endif
 	bus_unregister(&i2c_bus_type);
+	tracepoint_synchronize_unregister();
 }
 
 /* We must initialize early, because some subsystems register i2c drivers
@@ -1716,6 +1732,19 @@ int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
 	unsigned long orig_jiffies;
 	int ret, try;
 
+	/* i2c_trace_msg gets enabled when tracepoint i2c_transfer gets
+	 * enabled.  This is an efficient way of keeping the for-loop from
+	 * being executed when not needed.
+	 */
+	if (static_key_false(&i2c_trace_msg)) {
+		int i;
+		for (i = 0; i < num; i++)
+			if (msgs[i].flags & I2C_M_RD)
+				trace_i2c_read(adap, &msgs[i], i);
+			else
+				trace_i2c_write(adap, &msgs[i], i);
+	}
+
 	/* Retry automatically on arbitration loss */
 	orig_jiffies = jiffies;
 	for (ret = 0, try = 0; try <= adap->retries; try++) {
@@ -1726,6 +1755,14 @@ int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
 			break;
 	}
 
+	if (static_key_false(&i2c_trace_msg)) {
+		int i;
+		for (i = 0; i < ret; i++)
+			if (msgs[i].flags & I2C_M_RD)
+				trace_i2c_reply(adap, &msgs[i], i);
+		trace_i2c_result(adap, i, ret);
+	}
+
 	return ret;
 }
 EXPORT_SYMBOL(__i2c_transfer);
@@ -1941,6 +1978,13 @@ static int i2c_detect_address(struct i2c_client *temp_client,
 		struct i2c_client *client;
 
 		/* Detection succeeded, instantiate the device */
+		if (adapter->class & I2C_CLASS_DEPRECATED)
+			dev_warn(&adapter->dev,
+				"This adapter will soon drop class based instantiation of devices. "
+				"Please make sure client 0x%02x gets instantiated by other means. "
+				"Check 'Documentation/i2c/instantiating-devices' for details.\n",
+				info.addr);
+
 		dev_dbg(&adapter->dev, "Creating %s at 0x%02x\n",
 			info.type, info.addr);
 		client = i2c_new_device(adapter, &info);
@@ -2521,6 +2565,14 @@ s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, unsigned short flags,
 	int try;
 	s32 res;
 
+	/* If enabled, the following two tracepoints are conditional on
+	 * read_write and protocol.
+	 */
+	trace_smbus_write(adapter, addr, flags, read_write,
+			  command, protocol, data);
+	trace_smbus_read(adapter, addr, flags, read_write,
+			 command, protocol);
+
 	flags &= I2C_M_TEN | I2C_CLIENT_PEC | I2C_CLIENT_SCCB;
 
 	if (adapter->algo->smbus_xfer) {
@@ -2541,15 +2593,24 @@ s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, unsigned short flags,
 		i2c_unlock_adapter(adapter);
 
 		if (res != -EOPNOTSUPP || !adapter->algo->master_xfer)
-			return res;
+			goto trace;
 		/*
 		 * Fall back to i2c_smbus_xfer_emulated if the adapter doesn't
 		 * implement native support for the SMBus operation.
 		 */
 	}
 
-	return i2c_smbus_xfer_emulated(adapter, addr, flags, read_write,
+	res = i2c_smbus_xfer_emulated(adapter, addr, flags, read_write,
+				      command, protocol, data);
+
+trace:
+	/* If enabled, the reply tracepoint is conditional on read_write. */
+	trace_smbus_reply(adapter, addr, flags, read_write,
 			  command, protocol, data);
+	trace_smbus_result(adapter, addr, flags, read_write,
+			   command, protocol, res);
+
+	return res;
 }
 EXPORT_SYMBOL(i2c_smbus_xfer);
 

include/linux/i2c.h

@@ -487,6 +487,7 @@ void i2c_unlock_adapter(struct i2c_adapter *);
 #define I2C_CLASS_HWMON		(1<<0)	/* lm_sensors, ... */
 #define I2C_CLASS_DDC		(1<<3)	/* DDC bus on graphics adapters */
 #define I2C_CLASS_SPD		(1<<7)	/* Memory modules */
+#define I2C_CLASS_DEPRECATED	(1<<8)	/* Warn users that adapter will stop using classes */
 
 /* Internal numbers to terminate lists */
 #define I2C_CLIENT_END		0xfffeU

include/linux/i2c/bfin_twi.h

+/*
+ * i2c-bfin-twi.h - interface to ADI TWI controller
+ *
+ * Copyright 2005-2014 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __I2C_BFIN_TWI_H__
+#define __I2C_BFIN_TWI_H__
+
+#include <linux/types.h>
+#include <linux/i2c.h>
+
+/*
+ * ADI twi registers layout
+ */
+struct bfin_twi_regs {
+	u16 clkdiv;
+	u16 dummy1;
+	u16 control;
+	u16 dummy2;
+	u16 slave_ctl;
+	u16 dummy3;
+	u16 slave_stat;
+	u16 dummy4;
+	u16 slave_addr;
+	u16 dummy5;
+	u16 master_ctl;
+	u16 dummy6;
+	u16 master_stat;
+	u16 dummy7;
+	u16 master_addr;
+	u16 dummy8;
+	u16 int_stat;
+	u16 dummy9;
+	u16 int_mask;
+	u16 dummy10;
+	u16 fifo_ctl;
+	u16 dummy11;
+	u16 fifo_stat;
+	u16 dummy12;
+	u32 __pad[20];
+	u16 xmt_data8;
+	u16 dummy13;
+	u16 xmt_data16;
+	u16 dummy14;
+	u16 rcv_data8;
+	u16 dummy15;
+	u16 rcv_data16;
+	u16 dummy16;
+};
+
+struct bfin_twi_iface {
+	int			irq;
+	spinlock_t		lock;
+	char			read_write;
+	u8			command;
+	u8			*transPtr;
+	int			readNum;
+	int			writeNum;
+	int			cur_mode;
+	int			manual_stop;
+	int			result;
+	struct i2c_adapter	adap;
+	struct completion	complete;
+	struct i2c_msg		*pmsg;
+	int			msg_num;
+	int			cur_msg;
+	u16			saved_clkdiv;
+	u16			saved_control;
+	struct bfin_twi_regs __iomem *regs_base;
+};
+
+/*  ********************  TWO-WIRE INTERFACE (TWI) MASKS  ********************/
+/* TWI_CLKDIV Macros (Use: *pTWI_CLKDIV = CLKLOW(x)|CLKHI(y);  ) */
+#define	CLKLOW(x)	((x) & 0xFF)	/* Periods Clock Is Held Low */
+#define CLKHI(y)	(((y)&0xFF)<<0x8) /* Periods Before New Clock Low */
+
+/* TWI_PRESCALE Masks */
+#define	PRESCALE	0x007F	/* SCLKs Per Internal Time Reference (10MHz) */
+#define	TWI_ENA		0x0080	/* TWI Enable */
+#define	SCCB		0x0200	/* SCCB Compatibility Enable */
+
+/* TWI_SLAVE_CTL Masks */
+#define	SEN		0x0001	/* Slave Enable */
+#define	SADD_LEN	0x0002	/* Slave Address Length */
+#define	STDVAL		0x0004	/* Slave Transmit Data Valid */
+#define	NAK		0x0008	/* NAK Generated At Conclusion Of Transfer */
+#define	GEN		0x0010	/* General Call Address Matching Enabled */
+
+/* TWI_SLAVE_STAT Masks	*/
+#define	SDIR		0x0001	/* Slave Transfer Direction (RX/TX*) */
+#define GCALL		0x0002	/* General Call Indicator */
+
+/* TWI_MASTER_CTL Masks	*/
+#define	MEN		0x0001	/* Master Mode Enable          */
+#define	MADD_LEN	0x0002	/* Master Address Length       */
+#define	MDIR		0x0004	/* Master Transmit Direction (RX/TX*) */
+#define	FAST		0x0008	/* Use Fast Mode Timing Specs  */
+#define	STOP		0x0010	/* Issue Stop Condition        */
+#define	RSTART		0x0020	/* Repeat Start or Stop* At End Of Transfer */
+#define	DCNT		0x3FC0	/* Data Bytes To Transfer      */
+#define	SDAOVR		0x4000	/* Serial Data Override        */
+#define	SCLOVR		0x8000	/* Serial Clock Override       */
+
+/* TWI_MASTER_STAT Masks */
+#define	MPROG		0x0001	/* Master Transfer In Progress */
+#define	LOSTARB		0x0002	/* Lost Arbitration Indicator (Xfer Aborted) */
+#define	ANAK		0x0004	/* Address Not Acknowledged    */
+#define	DNAK		0x0008	/* Data Not Acknowledged       */
+#define	BUFRDERR	0x0010	/* Buffer Read Error           */
+#define	BUFWRERR	0x0020	/* Buffer Write Error          */
+#define	SDASEN		0x0040	/* Serial Data Sense           */
+#define	SCLSEN		0x0080	/* Serial Clock Sense          */
+#define	BUSBUSY		0x0100	/* Bus Busy Indicator          */
+
+/* TWI_INT_SRC and TWI_INT_ENABLE Masks	*/
+#define	SINIT		0x0001	/* Slave Transfer Initiated    */
+#define	SCOMP		0x0002	/* Slave Transfer Complete     */
+#define	SERR		0x0004	/* Slave Transfer Error        */
+#define	SOVF		0x0008	/* Slave Overflow              */
+#define	MCOMP		0x0010	/* Master Transfer Complete    */
+#define	MERR		0x0020	/* Master Transfer Error       */
+#define	XMTSERV		0x0040	/* Transmit FIFO Service       */
+#define	RCVSERV		0x0080	/* Receive FIFO Service        */
+
+/* TWI_FIFO_CTRL Masks */
+#define	XMTFLUSH	0x0001	/* Transmit Buffer Flush                 */
+#define	RCVFLUSH	0x0002	/* Receive Buffer Flush                  */
+#define	XMTINTLEN	0x0004	/* Transmit Buffer Interrupt Length      */
+#define	RCVINTLEN	0x0008	/* Receive Buffer Interrupt Length       */
+
+/* TWI_FIFO_STAT Masks */
+#define	XMTSTAT		0x0003	/* Transmit FIFO Status                  */
+#define	XMT_EMPTY	0x0000	/* Transmit FIFO Empty                   */
+#define	XMT_HALF	0x0001	/* Transmit FIFO Has 1 Byte To Write     */
+#define	XMT_FULL	0x0003	/* Transmit FIFO Full (2 Bytes To Write) */
+
+#define	RCVSTAT		0x000C	/* Receive FIFO Status                   */
+#define	RCV_EMPTY	0x0000	/* Receive FIFO Empty                    */
+#define	RCV_HALF	0x0004	/* Receive FIFO Has 1 Byte To Read       */
+#define	RCV_FULL	0x000C	/* Receive FIFO Full (2 Bytes To Read)   */
+
+#endif

include/linux/platform_data/i2c-s3c2410.h

-/* arch/arm/plat-s3c/include/plat/iic.h
- *
+/*
  * Copyright 2004-2009 Simtec Electronics
  *	Ben Dooks <ben@simtec.co.uk>
  *
@@ -10,8 +9,8 @@
  * published by the Free Software Foundation.
 */
 
-#ifndef __ASM_ARCH_IIC_H
-#define __ASM_ARCH_IIC_H __FILE__
+#ifndef __I2C_S3C2410_H
+#define __I2C_S3C2410_H __FILE__
 
 #define S3C_IICFLG_FILTER	(1<<0)	/* enable s3c2440 filter */
 
@@ -76,4 +75,4 @@ extern void s3c_i2c7_cfg_gpio(struct platform_device *dev);
 
 extern struct s3c2410_platform_i2c default_i2c_data;
 
-#endif /* __ASM_ARCH_IIC_H */
+#endif /* __I2C_S3C2410_H */