Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  i2c: Fix OMAP clock prescaler to match the comment
  i2c: Refactor a kfree in i2c-dev
  i2c: Fix return value check in i2c-dev
  i2c: Enable PEC on more i2c-i801 devices
  i2c: Discard the i2c algo del_bus wrappers
  i2c: New ARM Versatile/Realview bus driver
  i2c: fix broken ds1337 initialization
  i2c: i2c-i801 documentation update
  i2c: Use the __ATTR macro where possible
  i2c: Whitespace cleanups
  i2c: Use put_user instead of copy_to_user where possible
  i2c: New Atmel AT91 bus driver
  i2c: Add support for nested i2c bus locking
  i2c: Cleanups to the i2c-nforce2 bus driver
  i2c: Add request/release_mem_region to i2c-ibm_iic bus driver
  i2c: New Philips PNX bus driver
  i2c: Delete the broken i2c-ite bus driver
  i2c: Update the list of driver IDs
  i2c: Fix documentation typos

6 files changed, 197 insertions, 1 deletions

diff --git a/arch/arm/mach-pnx4008/Makefile b/arch/arm/mach-pnx4008/Makefile
index b457ca0a431a..777564c90a12 100644
--- a/arch/arm/mach-pnx4008/Makefile
+++ b/arch/arm/mach-pnx4008/Makefile
@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-obj-y                   := core.o irq.o time.o clock.o gpio.o serial.o dma.o
+obj-y                   := core.o irq.o time.o clock.o gpio.o serial.o dma.o i2c.o
 obj-m                   :=
 obj-n                   :=
 obj-                    :=
diff --git a/arch/arm/mach-pnx4008/i2c.c b/arch/arm/mach-pnx4008/i2c.c
new file mode 100644
index 000000000000..6f308827c4fe
--- /dev/null
+++ b/arch/arm/mach-pnx4008/i2c.c
@@ -0,0 +1,167 @@
+/*
+ * I2C initialization for PNX4008.
+ *
+ * Author: Vitaly Wool <vitalywool@gmail.com>
+ *
+ * 2005-2006 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <linux/i2c-pnx.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <asm/arch/platform.h>
+#include <asm/arch/i2c.h>
+
+static int set_clock_run(struct platform_device *pdev)
+{
+        struct clk *clk;
+        char name[10];
+        int retval = 0;
+
+        snprintf(name, 10, "i2c%d_ck", pdev->id);
+        clk = clk_get(&pdev->dev, name);
+        if (!IS_ERR(clk)) {
+                clk_set_rate(clk, 1);
+                clk_put(clk);
+        } else
+                retval = -ENOENT;
+
+        return retval;
+}
+
+static int set_clock_stop(struct platform_device *pdev)
+{
+        struct clk *clk;
+        char name[10];
+        int retval = 0;
+
+        snprintf(name, 10, "i2c%d_ck", pdev->id);
+        clk = clk_get(&pdev->dev, name);
+        if (!IS_ERR(clk)) {
+                clk_set_rate(clk, 0);
+                clk_put(clk);
+        } else
+                retval = -ENOENT;
+
+        return retval;
+}
+
+static int i2c_pnx_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        int retval = 0;
+#ifdef CONFIG_PM
+        retval = set_clock_run(pdev);
+#endif
+        return retval;
+}
+
+static int i2c_pnx_resume(struct platform_device *pdev)
+{
+        int retval = 0;
+#ifdef CONFIG_PM
+        retval = set_clock_run(pdev);
+#endif
+        return retval;
+}
+
+static u32 calculate_input_freq(struct platform_device *pdev)
+{
+        return HCLK_MHZ;
+}
+
+
+static struct i2c_pnx_algo_data pnx_algo_data0 = {
+        .base = PNX4008_I2C1_BASE,
+        .irq = I2C_1_INT,
+};
+
+static struct i2c_pnx_algo_data pnx_algo_data1 = {
+        .base = PNX4008_I2C2_BASE,
+        .irq = I2C_2_INT,
+};
+
+static struct i2c_pnx_algo_data pnx_algo_data2 = {
+        .base = (PNX4008_USB_CONFIG_BASE + 0x300),
+        .irq = USB_I2C_INT,
+};
+
+static struct i2c_adapter pnx_adapter0 = {
+        .name = I2C_CHIP_NAME "0",
+        .algo_data = &pnx_algo_data0,
+};
+static struct i2c_adapter pnx_adapter1 = {
+        .name = I2C_CHIP_NAME "1",
+        .algo_data = &pnx_algo_data1,
+};
+
+static struct i2c_adapter pnx_adapter2 = {
+        .name = "USB-I2C",
+        .algo_data = &pnx_algo_data2,
+};
+
+static struct i2c_pnx_data i2c0_data = {
+        .suspend = i2c_pnx_suspend,
+        .resume = i2c_pnx_resume,
+        .calculate_input_freq = calculate_input_freq,
+        .set_clock_run = set_clock_run,
+        .set_clock_stop = set_clock_stop,
+        .adapter = &pnx_adapter0,
+};
+
+static struct i2c_pnx_data i2c1_data = {
+        .suspend = i2c_pnx_suspend,
+        .resume = i2c_pnx_resume,
+        .calculate_input_freq = calculate_input_freq,
+        .set_clock_run = set_clock_run,
+        .set_clock_stop = set_clock_stop,
+        .adapter = &pnx_adapter1,
+};
+
+static struct i2c_pnx_data i2c2_data = {
+        .suspend = i2c_pnx_suspend,
+        .resume = i2c_pnx_resume,
+        .calculate_input_freq = calculate_input_freq,
+        .set_clock_run = set_clock_run,
+        .set_clock_stop = set_clock_stop,
+        .adapter = &pnx_adapter2,
+};
+
+static struct platform_device i2c0_device = {
+        .name = "pnx-i2c",
+        .id = 0,
+        .dev = {
+                .platform_data = &i2c0_data,
+        },
+};
+
+static struct platform_device i2c1_device = {
+        .name = "pnx-i2c",
+        .id = 1,
+        .dev = {
+                .platform_data = &i2c1_data,
+        },
+};
+
+static struct platform_device i2c2_device = {
+        .name = "pnx-i2c",
+        .id = 2,
+        .dev = {
+                .platform_data = &i2c2_data,
+        },
+};
+
+static struct platform_device *devices[] __initdata = {
+        &i2c0_device,
+        &i2c1_device,
+        &i2c2_device,
+};
+
+void __init pnx4008_register_i2c_devices(void)
+{
+        platform_add_devices(devices, ARRAY_SIZE(devices));
+}
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 68c67053f479..84d3fe76e94e 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -141,6 +141,19 @@ struct platform_device realview_smc91x_device = {
         .resource       = realview_smc91x_resources,
 };
 
+static struct resource realview_i2c_resource = {
+        .start          = REALVIEW_I2C_BASE,
+        .end            = REALVIEW_I2C_BASE + SZ_4K - 1,
+        .flags          = IORESOURCE_MEM,
+};
+
+struct platform_device realview_i2c_device = {
+        .name           = "versatile-i2c",
+        .id             = -1,
+        .num_resources  = 1,
+        .resource       = &realview_i2c_resource,
+};
+
 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
 
 static unsigned int realview_mmc_status(struct device *dev)
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 93e86d9f439c..2b53420f9c1b 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -108,6 +108,7 @@ static struct amba_device name##_device = {			\
 
 extern struct platform_device realview_flash_device;
 extern struct platform_device realview_smc91x_device;
+extern struct platform_device realview_i2c_device;
 extern struct mmc_platform_data realview_mmc0_plat_data;
 extern struct mmc_platform_data realview_mmc1_plat_data;
 extern struct clk realview_clcd_clk;
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 84a959530fb6..9741b4d3c9cf 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -155,6 +155,7 @@ static void __init realview_eb_init(void)
 
         platform_device_register(&realview_flash_device);
         platform_device_register(&realview_smc91x_device);
+        platform_device_register(&realview_i2c_device);
 
         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
                 struct amba_device *d = amba_devs[i];
diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index 57196947559f..bf71507c76fd 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -325,6 +325,19 @@ static struct platform_device smc91x_device = {
         .resource       = smc91x_resources,
 };
 
+static struct resource versatile_i2c_resource = {
+        .start                  = VERSATILE_I2C_BASE,
+        .end                    = VERSATILE_I2C_BASE + SZ_4K - 1,
+        .flags                  = IORESOURCE_MEM,
+};
+
+static struct platform_device versatile_i2c_device = {
+        .name                   = "versatile-i2c",
+        .id                     = -1,
+        .num_resources          = 1,
+        .resource               = &versatile_i2c_resource,
+};
+
 #define VERSATILE_SYSMCI        (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)
 
 unsigned int mmc_status(struct device *dev)
@@ -775,6 +788,7 @@ void __init versatile_init(void)
         clk_register(&versatile_clcd_clk);
 
         platform_device_register(&versatile_flash_device);
+        platform_device_register(&versatile_i2c_device);
         platform_device_register(&smc91x_device);
 
         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {