ixp4xx-i2c-gpio

Migrate all ixp4xx devices to the bitbanging I2C bus driver utilizing
the arch-neutral GPIO API (linux/i2c-gpio.h).

Tested by the nslu2-linux and openwrt projects in public firmware releases.

Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
Acked-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

5 files changed, 38 insertions, 31 deletions

diff --git a/arch/arm/mach-ixp4xx/avila-setup.c b/arch/arm/mach-ixp4xx/avila-setup.c
index d59b8dc7dc7a..e38f45fa58ae 100644
--- a/arch/arm/mach-ixp4xx/avila-setup.c
+++ b/arch/arm/mach-ixp4xx/avila-setup.c
@@ -18,6 +18,7 @@
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
 #include <linux/slab.h>
+#include <linux/i2c-gpio.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -47,18 +48,17 @@ static struct platform_device avila_flash = {
         .resource       = &avila_flash_resource,
 };
 
-static struct ixp4xx_i2c_pins avila_i2c_gpio_pins = {
+static struct i2c_gpio_platform_data avila_i2c_gpio_data = {
         .sda_pin        = AVILA_SDA_PIN,
         .scl_pin        = AVILA_SCL_PIN,
 };
 
-static struct platform_device avila_i2c_controller = {
-        .name           = "IXP4XX-I2C",
+static struct platform_device avila_i2c_gpio = {
+        .name           = "i2c-gpio",
         .id             = 0,
-        .dev            = {
-                .platform_data = &avila_i2c_gpio_pins,
+        .dev     = {
+                .platform_data  = &avila_i2c_gpio_data,
         },
-        .num_resources  = 0
 };
 
 static struct resource avila_uart_resources[] = {
@@ -133,7 +133,7 @@ static struct platform_device avila_pata = {
 };
 
 static struct platform_device *avila_devices[] __initdata = {
-        &avila_i2c_controller,
+        &avila_i2c_gpio,
         &avila_flash,
         &avila_uart
 };
diff --git a/arch/arm/mach-ixp4xx/dsmg600-setup.c b/arch/arm/mach-ixp4xx/dsmg600-setup.c
index 1e75e105c4f7..c473d408aa7c 100644
--- a/arch/arm/mach-ixp4xx/dsmg600-setup.c
+++ b/arch/arm/mach-ixp4xx/dsmg600-setup.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
+#include <linux/i2c-gpio.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -37,15 +38,17 @@ static struct platform_device dsmg600_flash = {
         .resource               = &dsmg600_flash_resource,
 };
 
-static struct ixp4xx_i2c_pins dsmg600_i2c_gpio_pins = {
+static struct i2c_gpio_platform_data dsmg600_i2c_gpio_data = {
         .sda_pin                = DSMG600_SDA_PIN,
         .scl_pin                = DSMG600_SCL_PIN,
 };
 
-static struct platform_device dsmg600_i2c_controller = {
-        .name                   = "IXP4XX-I2C",
+static struct platform_device dsmg600_i2c_gpio = {
+        .name                   = "i2c-gpio",
         .id                     = 0,
-        .dev.platform_data      = &dsmg600_i2c_gpio_pins,
+        .dev     = {
+                .platform_data  = &dsmg600_i2c_gpio_data,
+        },
 };
 
 #ifdef CONFIG_LEDS_CLASS
@@ -116,7 +119,7 @@ static struct platform_device dsmg600_uart = {
 };
 
 static struct platform_device *dsmg600_devices[] __initdata = {
-        &dsmg600_i2c_controller,
+        &dsmg600_i2c_gpio,
         &dsmg600_flash,
 };
 
diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c
index d5008d8fc9a5..e89070da28bf 100644
--- a/arch/arm/mach-ixp4xx/ixdp425-setup.c
+++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c
@@ -15,6 +15,7 @@
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
 #include <linux/slab.h>
+#include <linux/i2c-gpio.h>
 #include <linux/io.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
@@ -120,18 +121,17 @@ static struct platform_device ixdp425_flash_nand = {
 };
 #endif  /* CONFIG_MTD_NAND_PLATFORM */
 
-static struct ixp4xx_i2c_pins ixdp425_i2c_gpio_pins = {
+static struct i2c_gpio_platform_data ixdp425_i2c_gpio_data = {
         .sda_pin        = IXDP425_SDA_PIN,
         .scl_pin        = IXDP425_SCL_PIN,
 };
 
-static struct platform_device ixdp425_i2c_controller = {
-        .name           = "IXP4XX-I2C",
+static struct platform_device ixdp425_i2c_gpio = {
+        .name           = "i2c-gpio",
         .id             = 0,
-        .dev            = {
-                .platform_data = &ixdp425_i2c_gpio_pins,
+        .dev     = {
+                .platform_data  = &ixdp425_i2c_gpio_data,
         },
-        .num_resources  = 0
 };
 
 static struct resource ixdp425_uart_resources[] = {
@@ -178,7 +178,7 @@ static struct platform_device ixdp425_uart = {
 };
 
 static struct platform_device *ixdp425_devices[] __initdata = {
-        &ixdp425_i2c_controller,
+        &ixdp425_i2c_gpio,
         &ixdp425_flash,
 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
     defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c
index 78a17413ceca..54d884fb2517 100644
--- a/arch/arm/mach-ixp4xx/nas100d-setup.c
+++ b/arch/arm/mach-ixp4xx/nas100d-setup.c
@@ -16,6 +16,7 @@
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
 #include <linux/leds.h>
+#include <linux/i2c-gpio.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -68,16 +69,17 @@ static struct platform_device nas100d_leds = {
 };
 #endif
 
-static struct ixp4xx_i2c_pins nas100d_i2c_gpio_pins = {
+static struct i2c_gpio_platform_data nas100d_i2c_gpio_data = {
         .sda_pin                = NAS100D_SDA_PIN,
         .scl_pin                = NAS100D_SCL_PIN,
 };
 
-static struct platform_device nas100d_i2c_controller = {
-        .name                   = "IXP4XX-I2C",
+static struct platform_device nas100d_i2c_gpio = {
+        .name                   = "i2c-gpio",
         .id                     = 0,
-        .dev.platform_data      = &nas100d_i2c_gpio_pins,
-        .num_resources          = 0,
+        .dev     = {
+                .platform_data  = &nas100d_i2c_gpio_data,
+        },
 };
 
 static struct resource nas100d_uart_resources[] = {
@@ -124,7 +126,7 @@ static struct platform_device nas100d_uart = {
 };
 
 static struct platform_device *nas100d_devices[] __initdata = {
-        &nas100d_i2c_controller,
+        &nas100d_i2c_gpio,
         &nas100d_flash,
 #ifdef CONFIG_LEDS_IXP4XX
         &nas100d_leds,
diff --git a/arch/arm/mach-ixp4xx/nslu2-setup.c b/arch/arm/mach-ixp4xx/nslu2-setup.c
index 9bf8ccbcaccf..77277d27fcc5 100644
--- a/arch/arm/mach-ixp4xx/nslu2-setup.c
+++ b/arch/arm/mach-ixp4xx/nslu2-setup.c
@@ -18,6 +18,7 @@
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
 #include <linux/leds.h>
+#include <linux/i2c-gpio.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -41,7 +42,7 @@ static struct platform_device nslu2_flash = {
         .resource               = &nslu2_flash_resource,
 };
 
-static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
+static struct i2c_gpio_platform_data nslu2_i2c_gpio_data = {
         .sda_pin                = NSLU2_SDA_PIN,
         .scl_pin                = NSLU2_SCL_PIN,
 };
@@ -82,11 +83,12 @@ static struct platform_device nslu2_leds = {
 };
 #endif
 
-static struct platform_device nslu2_i2c_controller = {
-        .name                   = "IXP4XX-I2C",
+static struct platform_device nslu2_i2c_gpio = {
+        .name                   = "i2c-gpio",
         .id                     = 0,
-        .dev.platform_data      = &nslu2_i2c_gpio_pins,
-        .num_resources          = 0,
+        .dev     = {
+                .platform_data  = &nslu2_i2c_gpio_data,
+        },
 };
 
 static struct platform_device nslu2_beeper = {
@@ -139,7 +141,7 @@ static struct platform_device nslu2_uart = {
 };
 
 static struct platform_device *nslu2_devices[] __initdata = {
-        &nslu2_i2c_controller,
+        &nslu2_i2c_gpio,
         &nslu2_flash,
         &nslu2_beeper,
 #ifdef CONFIG_LEDS_IXP4XX