ARM: nomadik: register all three I2C busses

The Nomadik has two dedicated I2C bus blocks for I2C0 and I2C1,
and a bitbanged GPIO connection on two pins for the USB portions
of the STw4811 chip. Register all three as bit-banged GPIO for
the moment.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/mach-nomadik/i2c-8815nhk.c b/arch/arm/mach-nomadik/i2c-8815nhk.c
index 0fc2f6f..6d14454 100644 (file)
--- a/arch/arm/mach-nomadik/i2c-8815nhk.c
+++ b/arch/arm/mach-nomadik/i2c-8815nhk.c
@@ -5,6 +5,7 @@
 #include <linux/i2c-gpio.h>
 #include <linux/platform_device.h>
 #include <plat/gpio-nomadik.h>
+#include <plat/pincfg.h>
 
 /*
  * There are two busses in the 8815NHK.
@@ -12,19 +13,27 @@
  * use bit-bang through GPIO by now, to keep things simple
  */
 
+/* I2C0 connected to the STw4811 power management chip */
 static struct i2c_gpio_platform_data nhk8815_i2c_data0 = {
        /* keep defaults for timeouts; pins are push-pull bidirectional */
        .scl_pin = 62,
        .sda_pin = 63,
 };
 
+/* I2C1 connected to various sensors */
 static struct i2c_gpio_platform_data nhk8815_i2c_data1 = {
        /* keep defaults for timeouts; pins are push-pull bidirectional */
        .scl_pin = 53,
        .sda_pin = 54,
 };
 
-/* first bus: GPIO XX and YY */
+/* I2C2 connected to the USB portions of the STw4811 only */
+static struct i2c_gpio_platform_data nhk8815_i2c_data2 = {
+       /* keep defaults for timeouts; pins are push-pull bidirectional */
+       .scl_pin = 73,
+       .sda_pin = 74,
+};
+
 static struct platform_device nhk8815_i2c_dev0 = {
        .name   = "i2c-gpio",
        .id     = 0,
@@ -32,7 +41,7 @@ static struct platform_device nhk8815_i2c_dev0 = {
                .platform_data = &nhk8815_i2c_data0,
        },
 };
-/* second bus: GPIO XX and YY */
+
 static struct platform_device nhk8815_i2c_dev1 = {
        .name   = "i2c-gpio",
        .id     = 1,
@@ -41,15 +50,29 @@ static struct platform_device nhk8815_i2c_dev1 = {
        },
 };
 
+static struct platform_device nhk8815_i2c_dev2 = {
+       .name   = "i2c-gpio",
+       .id     = 2,
+       .dev    = {
+               .platform_data = &nhk8815_i2c_data2,
+       },
+};
+
+static pin_cfg_t cpu8815_pins_i2c[] = {
+       PIN_CFG_INPUT(62, GPIO, PULLUP),
+       PIN_CFG_INPUT(63, GPIO, PULLUP),
+       PIN_CFG_INPUT(53, GPIO, PULLUP),
+       PIN_CFG_INPUT(54, GPIO, PULLUP),
+       PIN_CFG_INPUT(73, GPIO, PULLUP),
+       PIN_CFG_INPUT(74, GPIO, PULLUP),
+};
+
 static int __init nhk8815_i2c_init(void)
 {
-       nmk_gpio_set_mode(nhk8815_i2c_data0.scl_pin, NMK_GPIO_ALT_GPIO);
-       nmk_gpio_set_mode(nhk8815_i2c_data0.sda_pin, NMK_GPIO_ALT_GPIO);
+       nmk_config_pins(cpu8815_pins_i2c, ARRAY_SIZE(cpu8815_pins_i2c));
        platform_device_register(&nhk8815_i2c_dev0);
-
-       nmk_gpio_set_mode(nhk8815_i2c_data1.scl_pin, NMK_GPIO_ALT_GPIO);
-       nmk_gpio_set_mode(nhk8815_i2c_data1.sda_pin, NMK_GPIO_ALT_GPIO);
        platform_device_register(&nhk8815_i2c_dev1);
+       platform_device_register(&nhk8815_i2c_dev2);
 
        return 0;
 }
@@ -58,6 +81,7 @@ static void __exit nhk8815_i2c_exit(void)
 {
        platform_device_unregister(&nhk8815_i2c_dev0);
        platform_device_unregister(&nhk8815_i2c_dev1);
+       platform_device_unregister(&nhk8815_i2c_dev2);
        return;
 }