Merge branch 'i2c-for-2630-v2' of git://aeryn.fluff.org.uk/bjdooks/linux

* 'i2c-for-2630-v2' of git://aeryn.fluff.org.uk/bjdooks/linux: i2c: imx: Make disable_delay a per-device variable i2c: xtensa s6000 i2c driver powerpc/85xx: i2c-mpc: use new I2C bindings for the Socates board i2c: i2c-mpc: make I2C bus speed configurable i2c: i2c-mpc: use dev based printout function i2c: i2c-mpc: various coding style fixes i2c: imx: Add missing request_mem_region in probe() i2c: i2c-s3c2410: Initialise Samsung I2C controller early i2c-s3c2410: Simplify bus frequency calculation i2c-s3c2410: sda_delay should be in ns, not clock ticks i2c: iMX/MXC support
git-mirror · Apr 7, 2009 · 0e26da0 · 0e26da0
2 parents 10a0d91 + 65de394
commit 0e26da0
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Showing 16 changed files with 1,504 additions and 126 deletions.
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
@@ -409,8 +409,7 @@ static struct platform_device bast_sio = {
 static struct s3c2410_platform_i2c __initdata bast_i2c_info = {
 	.flags		= 0,
 	.slave_addr	= 0x10,
-	.bus_freq	= 100*1000,
-	.max_freq	= 130*1000,
+	.frequency	= 100*1000,
 };
 
 /* Asix AX88796 10/100 ethernet controller */

diff --git a/arch/arm/mach-s3c2410/mach-n30.c b/arch/arm/mach-s3c2410/mach-n30.c
@@ -340,8 +340,7 @@ static struct platform_device *n35_devices[] __initdata = {
 static struct s3c2410_platform_i2c n30_i2ccfg = {
 	.flags		= 0,
 	.slave_addr	= 0x10,
-	.bus_freq	= 10*1000,
-	.max_freq	= 10*1000,
+	.frequency	= 10*1000,
 };
 
 /* Lots of hardcoded stuff, but it sets up the hardware in a useful

diff --git a/arch/arm/mach-s3c2412/mach-jive.c b/arch/arm/mach-s3c2412/mach-jive.c
@@ -453,8 +453,7 @@ static struct spi_board_info __initdata jive_spi_devs[] = {
 /* I2C bus and device configuration. */
 
 static struct s3c2410_platform_i2c jive_i2c_cfg __initdata = {
-	.max_freq	= 80 * 1000,
-	.bus_freq	= 50 * 1000,
+	.frequency	= 80 * 1000,
 	.flags		= S3C_IICFLG_FILTER,
 	.sda_delay	= 2,
 };

diff --git a/arch/arm/plat-mxc/include/mach/i2c.h b/arch/arm/plat-mxc/include/mach/i2c.h
@@ -0,0 +1,25 @@
+/*
+ * i2c.h - i.MX I2C driver header file
+ *
+ * Copyright (c) 2008, Darius Augulis <augulis.darius@gmail.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#ifndef __ASM_ARCH_I2C_H_
+#define __ASM_ARCH_I2C_H_
+
+/**
+ * struct imxi2c_platform_data - structure of platform data for MXC I2C driver
+ * @init:	Initialise gpio's and other board specific things
+ * @exit:	Free everything initialised by @init
+ * @bitrate:	Bus speed measured in Hz
+ *
+ **/
+struct imxi2c_platform_data {
+	int (*init)(struct device *dev);
+	void (*exit)(struct device *dev);
+	int bitrate;
+};
+
+#endif /* __ASM_ARCH_I2C_H_ */
diff --git a/arch/arm/plat-s3c/dev-i2c0.c b/arch/arm/plat-s3c/dev-i2c0.c
@@ -1,6 +1,6 @@
 /* linux/arch/arm/plat-s3c/dev-i2c0.c
  *
- * Copyright 2008 Simtec Electronics
+ * Copyright 2008,2009 Simtec Electronics
  *	Ben Dooks <ben@simtec.co.uk>
  *	http://armlinux.simtec.co.uk/
  *
@@ -50,9 +50,8 @@ struct platform_device s3c_device_i2c0 = {
 static struct s3c2410_platform_i2c default_i2c_data0 __initdata = {
 	.flags		= 0,
 	.slave_addr	= 0x10,
-	.bus_freq	= 100*1000,
-	.max_freq	= 400*1000,
-	.sda_delay	= S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
+	.frequency	= 100*1000,
+	.sda_delay	= 100,
 };
 
 void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd)

diff --git a/arch/arm/plat-s3c/dev-i2c1.c b/arch/arm/plat-s3c/dev-i2c1.c
@@ -1,6 +1,6 @@
 /* linux/arch/arm/plat-s3c/dev-i2c1.c
  *
- * Copyright 2008 Simtec Electronics
+ * Copyright 2008,2009 Simtec Electronics
  *	Ben Dooks <ben@simtec.co.uk>
  *	http://armlinux.simtec.co.uk/
  *
@@ -47,9 +47,8 @@ static struct s3c2410_platform_i2c default_i2c_data1 __initdata = {
 	.flags		= 0,
 	.bus_num	= 1,
 	.slave_addr	= 0x10,
-	.bus_freq	= 100*1000,
-	.max_freq	= 400*1000,
-	.sda_delay	= S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
+	.frequency	= 100*1000,
+	.sda_delay	= 100,
 };
 
 void __init s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *pd)

diff --git a/arch/arm/plat-s3c/include/plat/iic.h b/arch/arm/plat-s3c/include/plat/iic.h
@@ -1,9 +1,9 @@
-/* arch/arm/mach-s3c2410/include/mach/iic.h
+/* arch/arm/plat-s3c/include/plat/iic.h
  *
- * Copyright (c) 2004 Simtec Electronics
+ * Copyright 2004,2009 Simtec Electronics
  *	Ben Dooks <ben@simtec.co.uk>
  *
- * S3C2410 - I2C Controller platfrom_device info
+ * S3C - I2C Controller platform_device info
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -15,19 +15,24 @@
 
 #define S3C_IICFLG_FILTER	(1<<0)	/* enable s3c2440 filter */
 
-/* Notes:
- *	1) All frequencies are expressed in Hz
- *	2) A value of zero is `do not care`
-*/
-
+/**
+ *	struct s3c2410_platform_i2c - Platform data for s3c I2C.
+ *	@bus_num: The bus number to use (if possible).
+ *	@flags: Any flags for the I2C bus (E.g. S3C_IICFLK_FILTER).
+ *	@slave_addr: The I2C address for the slave device (if enabled).
+ *	@frequency: The desired frequency in Hz of the bus.  This is
+ *                  guaranteed to not be exceeded.  If the caller does
+ *                  not care, use zero and the driver will select a
+ *                  useful default.
+ *	@sda_delay: The delay (in ns) applied to SDA edges.
+ *	@cfg_gpio: A callback to configure the pins for I2C operation.
+ */
 struct s3c2410_platform_i2c {
-	int		bus_num;	/* bus number to use */
+	int		bus_num;
 	unsigned int	flags;
-	unsigned int	slave_addr;	/* slave address for controller */
-	unsigned long	bus_freq;	/* standard bus frequency */
-	unsigned long	max_freq;	/* max frequency for the bus */
-	unsigned long	min_freq;	/* min frequency for the bus */
-	unsigned int	sda_delay;	/* pclks (s3c2440 only) */
+	unsigned int	slave_addr;
+	unsigned long	frequency;
+	unsigned int	sda_delay;
 
 	void	(*cfg_gpio)(struct platform_device *dev);
 };

diff --git a/arch/powerpc/boot/dts/socrates.dts b/arch/powerpc/boot/dts/socrates.dts
@@ -79,11 +79,11 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			cell-index = <0>;
-			compatible = "fsl-i2c";
+			compatible = "fsl,mpc8544-i2c", "fsl-i2c";
 			reg = <0x3000 0x100>;
 			interrupts = <43 2>;
 			interrupt-parent = <&mpic>;
-			dfsrr;
+			fsl,preserve-clocking;
 
 			dtt@28 {
 				compatible = "winbond,w83782d";
@@ -111,11 +111,11 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			cell-index = <1>;
-			compatible = "fsl-i2c";
+			compatible = "fsl,mpc8544-i2c", "fsl-i2c";
 			reg = <0x3100 0x100>;
 			interrupts = <43 2>;
 			interrupt-parent = <&mpic>;
-			dfsrr;
+			fsl,preserve-clocking;
 		};
 
 		enet0: ethernet@24000 {

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
@@ -356,6 +356,16 @@ config I2C_IBM_IIC
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-ibm_iic.
 
+config I2C_IMX
+	tristate "IMX I2C interface"
+	depends on ARCH_MXC
+	help
+	  Say Y here if you want to use the IIC bus controller on
+	  the Freescale i.MX/MXC processors.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-imx.
+
 config I2C_IOP3XX
 	tristate "Intel IOPx3xx and IXP4xx on-chip I2C interface"
 	depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX || ARCH_IOP13XX
@@ -462,6 +472,16 @@ config I2C_S3C2410
 	  Say Y here to include support for I2C controller in the
 	  Samsung S3C2410 based System-on-Chip devices.
 
+config I2C_S6000
+	tristate "S6000 I2C support"
+	depends on XTENSA_VARIANT_S6000
+	help
+	  This driver supports the on chip I2C device on the
+	  S6000 xtensa processor family.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called i2c-s6000.
+
 config I2C_SH7760
 	tristate "Renesas SH7760 I2C Controller"
 	depends on CPU_SUBTYPE_SH7760

diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_I2C_DAVINCI)	+= i2c-davinci.o
 obj-$(CONFIG_I2C_GPIO)		+= i2c-gpio.o
 obj-$(CONFIG_I2C_HIGHLANDER)	+= i2c-highlander.o
 obj-$(CONFIG_I2C_IBM_IIC)	+= i2c-ibm_iic.o
+obj-$(CONFIG_I2C_IMX)		+= i2c-imx.o
 obj-$(CONFIG_I2C_IOP3XX)	+= i2c-iop3xx.o
 obj-$(CONFIG_I2C_IXP2000)	+= i2c-ixp2000.o
 obj-$(CONFIG_I2C_MPC)		+= i2c-mpc.o
@@ -43,6 +44,7 @@ obj-$(CONFIG_I2C_PASEMI)	+= i2c-pasemi.o
 obj-$(CONFIG_I2C_PNX)		+= i2c-pnx.o
 obj-$(CONFIG_I2C_PXA)		+= i2c-pxa.o
 obj-$(CONFIG_I2C_S3C2410)	+= i2c-s3c2410.o
+obj-$(CONFIG_I2C_S6000)		+= i2c-s6000.o
 obj-$(CONFIG_I2C_SH7760)	+= i2c-sh7760.o
 obj-$(CONFIG_I2C_SH_MOBILE)	+= i2c-sh_mobile.o
 obj-$(CONFIG_I2C_SIMTEC)	+= i2c-simtec.o