[ARM] 4650/1: AT91: New-style init of I2C, support for i2c-gpio

The AT91 I2C driver is currently marked as "broken" due to hardware
issues.  This patch enables AT91-based platforms to also use the
bitbanged GPIO for I2C.

This updates platform setup logic (setting up an i2c-gpio device
using the same pins as the i2c-at91 device, unless only the BROKEN
driver is enabled).

Also make use of the new-style initialization of I2C devices using
i2c_register_board_info().

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
index 0417c165d50d0a8e732b60b5ad767cddbe757851..9296833f91ccd576c7c5dbbacffbf94cb7a28518 100644 (file)
--- a/arch/arm/mach-at91/at91rm9200_devices.c
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -14,6 +14,7 @@
 #include <asm/mach/map.h>
 
 #include <linux/platform_device.h>
+#include <linux/i2c-gpio.h>
 
 #include <asm/arch/board.h>
 #include <asm/arch/gpio.h>
@@ -435,7 +436,40 @@ void __init at91_add_device_nand(struct at91_nand_data *data) {}
  *  TWI (i2c)
  * -------------------------------------------------------------------- */
 
-#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
+/*
+ * Prefer the GPIO code since the TWI controller isn't robust
+ * (gets overruns and underruns under load) and can only issue
+ * repeated STARTs in one scenario (the driver doesn't yet handle them).
+ */
+#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
+
+static struct i2c_gpio_platform_data pdata = {
+       .sda_pin                = AT91_PIN_PA25,
+       .sda_is_open_drain      = 1,
+       .scl_pin                = AT91_PIN_PA26,
+       .scl_is_open_drain      = 1,
+       .udelay                 = 2,            /* ~100 kHz */
+};
+
+static struct platform_device at91rm9200_twi_device = {
+       .name                   = "i2c-gpio",
+       .id                     = -1,
+       .dev.platform_data      = &pdata,
+};
+
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
+{
+       at91_set_GPIO_periph(AT91_PIN_PA25, 1);         /* TWD (SDA) */
+       at91_set_multi_drive(AT91_PIN_PA25, 1);
+
+       at91_set_GPIO_periph(AT91_PIN_PA26, 1);         /* TWCK (SCL) */
+       at91_set_multi_drive(AT91_PIN_PA26, 1);
+
+       i2c_register_board_info(0, devices, nr_devices);
+       platform_device_register(&at91rm9200_twi_device);
+}
+
+#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 
 static struct resource twi_resources[] = {
        [0] = {
@@ -457,7 +491,7 @@ static struct platform_device at91rm9200_twi_device = {
        .num_resources  = ARRAY_SIZE(twi_resources),
 };
 
-void __init at91_add_device_i2c(void)
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 {
        /* pins used for TWI interface */
        at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
@@ -466,10 +500,11 @@ void __init at91_add_device_i2c(void)
        at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
        at91_set_multi_drive(AT91_PIN_PA26, 1);
 
+       i2c_register_board_info(0, devices, nr_devices);
        platform_device_register(&at91rm9200_twi_device);
 }
 #else
-void __init at91_add_device_i2c(void) {}
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 #endif
 
 

diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index ffd3154c1e5404f2a305b4b4e8ece8b739ad8b02..3091bf47d8c96dafb90e694005c3d2f99df7e1df 100644 (file)
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -13,6 +13,7 @@
 #include <asm/mach/map.h>
 
 #include <linux/platform_device.h>
+#include <linux/i2c-gpio.h>
 
 #include <asm/arch/board.h>
 #include <asm/arch/gpio.h>
@@ -352,7 +353,41 @@ void __init at91_add_device_nand(struct at91_nand_data *data) {}
  *  TWI (i2c)
  * -------------------------------------------------------------------- */
 
-#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
+/*
+ * Prefer the GPIO code since the TWI controller isn't robust
+ * (gets overruns and underruns under load) and can only issue
+ * repeated STARTs in one scenario (the driver doesn't yet handle them).
+ */
+
+#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
+
+static struct i2c_gpio_platform_data pdata = {
+       .sda_pin                = AT91_PIN_PA23,
+       .sda_is_open_drain      = 1,
+       .scl_pin                = AT91_PIN_PA24,
+       .scl_is_open_drain      = 1,
+       .udelay                 = 2,            /* ~100 kHz */
+};
+
+static struct platform_device at91sam9260_twi_device = {
+       .name                   = "i2c-gpio",
+       .id                     = -1,
+       .dev.platform_data      = &pdata,
+};
+
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
+{
+       at91_set_GPIO_periph(AT91_PIN_PA23, 1);         /* TWD (SDA) */
+       at91_set_multi_drive(AT91_PIN_PA23, 1);
+
+       at91_set_GPIO_periph(AT91_PIN_PA24, 1);         /* TWCK (SCL) */
+       at91_set_multi_drive(AT91_PIN_PA24, 1);
+
+       i2c_register_board_info(0, devices, nr_devices);
+       platform_device_register(&at91sam9260_twi_device);
+}
+
+#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 
 static struct resource twi_resources[] = {
        [0] = {
@@ -374,7 +409,7 @@ static struct platform_device at91sam9260_twi_device = {
        .num_resources  = ARRAY_SIZE(twi_resources),
 };
 
-void __init at91_add_device_i2c(void)
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 {
        /* pins used for TWI interface */
        at91_set_A_periph(AT91_PIN_PA23, 0);            /* TWD */
@@ -383,10 +418,11 @@ void __init at91_add_device_i2c(void)
        at91_set_A_periph(AT91_PIN_PA24, 0);            /* TWCK */
        at91_set_multi_drive(AT91_PIN_PA24, 1);
 
+       i2c_register_board_info(0, devices, nr_devices);
        platform_device_register(&at91sam9260_twi_device);
 }
 #else
-void __init at91_add_device_i2c(void) {}
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 #endif
 
 

diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 3576595b4941b7ecefcf75b0ab1ec0128f1bc261..64979a9023c2cb4e0a674cbb8cc9303ae0066074 100644 (file)
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -14,7 +14,9 @@
 #include <asm/mach/map.h>
 
 #include <linux/platform_device.h>
+#include <linux/i2c-gpio.h>
 
+#include <linux/fb.h>
 #include <video/atmel_lcdc.h>
 
 #include <asm/arch/board.h>
@@ -275,7 +277,40 @@ void __init at91_add_device_nand(struct at91_nand_data *data) {}
  *  TWI (i2c)
  * -------------------------------------------------------------------- */
 
-#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
+/*
+ * Prefer the GPIO code since the TWI controller isn't robust
+ * (gets overruns and underruns under load) and can only issue
+ * repeated STARTs in one scenario (the driver doesn't yet handle them).
+ */
+#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
+
+static struct i2c_gpio_platform_data pdata = {
+       .sda_pin                = AT91_PIN_PA7,
+       .sda_is_open_drain      = 1,
+       .scl_pin                = AT91_PIN_PA8,
+       .scl_is_open_drain      = 1,
+       .udelay                 = 2,            /* ~100 kHz */
+};
+
+static struct platform_device at91sam9261_twi_device = {
+       .name                   = "i2c-gpio",
+       .id                     = -1,
+       .dev.platform_data      = &pdata,
+};
+
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
+{
+       at91_set_GPIO_periph(AT91_PIN_PA7, 1);          /* TWD (SDA) */
+       at91_set_multi_drive(AT91_PIN_PA7, 1);
+
+       at91_set_GPIO_periph(AT91_PIN_PA8, 1);          /* TWCK (SCL) */
+       at91_set_multi_drive(AT91_PIN_PA8, 1);
+
+       i2c_register_board_info(0, devices, nr_devices);
+       platform_device_register(&at91sam9261_twi_device);
+}
+
+#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 
 static struct resource twi_resources[] = {
        [0] = {
@@ -297,7 +332,7 @@ static struct platform_device at91sam9261_twi_device = {
        .num_resources  = ARRAY_SIZE(twi_resources),
 };
 
-void __init at91_add_device_i2c(void)
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 {
        /* pins used for TWI interface */
        at91_set_A_periph(AT91_PIN_PA7, 0);             /* TWD */
@@ -306,10 +341,11 @@ void __init at91_add_device_i2c(void)
        at91_set_A_periph(AT91_PIN_PA8, 0);             /* TWCK */
        at91_set_multi_drive(AT91_PIN_PA8, 1);
 
+       i2c_register_board_info(0, devices, nr_devices);
        platform_device_register(&at91sam9261_twi_device);
 }
 #else
-void __init at91_add_device_i2c(void) {}
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 #endif
 
 

diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c
index f924bd5017de19ef1efac43b5dc125fdcc65ee13..ac329a98e9596ce1e56e784cab86b0c4f1fdab62 100644 (file)
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -13,7 +13,9 @@
 #include <asm/mach/map.h>
 
 #include <linux/platform_device.h>
+#include <linux/i2c-gpio.h>
 
+#include <linux/fb.h>
 #include <video/atmel_lcdc.h>
 
 #include <asm/arch/board.h>
@@ -421,7 +423,40 @@ void __init at91_add_device_nand(struct at91_nand_data *data) {}
  *  TWI (i2c)
  * -------------------------------------------------------------------- */
 
-#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
+/*
+ * Prefer the GPIO code since the TWI controller isn't robust
+ * (gets overruns and underruns under load) and can only issue
+ * repeated STARTs in one scenario (the driver doesn't yet handle them).
+ */
+#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
+
+static struct i2c_gpio_platform_data pdata = {
+       .sda_pin                = AT91_PIN_PB4,
+       .sda_is_open_drain      = 1,
+       .scl_pin                = AT91_PIN_PB5,
+       .scl_is_open_drain      = 1,
+       .udelay                 = 2,            /* ~100 kHz */
+};
+
+static struct platform_device at91sam9263_twi_device = {
+       .name                   = "i2c-gpio",
+       .id                     = -1,
+       .dev.platform_data      = &pdata,
+};
+
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
+{
+       at91_set_GPIO_periph(AT91_PIN_PB4, 1);          /* TWD (SDA) */
+       at91_set_multi_drive(AT91_PIN_PB4, 1);
+
+       at91_set_GPIO_periph(AT91_PIN_PB5, 1);          /* TWCK (SCL) */
+       at91_set_multi_drive(AT91_PIN_PB5, 1);
+
+       i2c_register_board_info(0, devices, nr_devices);
+       platform_device_register(&at91sam9263_twi_device);
+}
+
+#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 
 static struct resource twi_resources[] = {
        [0] = {
@@ -443,7 +478,7 @@ static struct platform_device at91sam9263_twi_device = {
        .num_resources  = ARRAY_SIZE(twi_resources),
 };
 
-void __init at91_add_device_i2c(void)
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 {
        /* pins used for TWI interface */
        at91_set_A_periph(AT91_PIN_PB4, 0);             /* TWD */
@@ -452,10 +487,11 @@ void __init at91_add_device_i2c(void)
        at91_set_A_periph(AT91_PIN_PB5, 0);             /* TWCK */
        at91_set_multi_drive(AT91_PIN_PB5, 1);
 
+       i2c_register_board_info(0, devices, nr_devices);
        platform_device_register(&at91sam9263_twi_device);
 }
 #else
-void __init at91_add_device_i2c(void) {}
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 #endif
 
 

diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index cd7532bcd4e5ea92a74aa2e4c5caec83fe519c04..2bd60a3dc6233cac740694121785f8edac22f81a 100644 (file)
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -10,8 +10,9 @@
 #include <asm/mach/map.h>
 
 #include <linux/platform_device.h>
-#include <linux/fb.h>
+#include <linux/i2c-gpio.h>
 
+#include <linux/fb.h>
 #include <video/atmel_lcdc.h>
 
 #include <asm/arch/board.h>
@@ -169,7 +170,40 @@ void __init at91_add_device_nand(struct at91_nand_data *data) {}
  *  TWI (i2c)
  * -------------------------------------------------------------------- */
 
-#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
+/*
+ * Prefer the GPIO code since the TWI controller isn't robust
+ * (gets overruns and underruns under load) and can only issue
+ * repeated STARTs in one scenario (the driver doesn't yet handle them).
+ */
+#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
+
+static struct i2c_gpio_platform_data pdata = {
+       .sda_pin                = AT91_PIN_PA23,
+       .sda_is_open_drain      = 1,
+       .scl_pin                = AT91_PIN_PA24,
+       .scl_is_open_drain      = 1,
+       .udelay                 = 2,            /* ~100 kHz */
+};
+
+static struct platform_device at91sam9rl_twi_device = {
+       .name                   = "i2c-gpio",
+       .id                     = -1,
+       .dev.platform_data      = &pdata,
+};
+
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
+{
+       at91_set_GPIO_periph(AT91_PIN_PA23, 1);         /* TWD (SDA) */
+       at91_set_multi_drive(AT91_PIN_PA23, 1);
+
+       at91_set_GPIO_periph(AT91_PIN_PA24, 1);         /* TWCK (SCL) */
+       at91_set_multi_drive(AT91_PIN_PA24, 1);
+
+       i2c_register_board_info(0, devices, nr_devices);
+       platform_device_register(&at91sam9rl_twi_device);
+}
+
+#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 
 static struct resource twi_resources[] = {
        [0] = {
@@ -191,7 +225,7 @@ static struct platform_device at91sam9rl_twi_device = {
        .num_resources  = ARRAY_SIZE(twi_resources),
 };
 
-void __init at91_add_device_i2c(void)
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 {
        /* pins used for TWI interface */
        at91_set_A_periph(AT91_PIN_PA23, 0);            /* TWD */
@@ -200,10 +234,11 @@ void __init at91_add_device_i2c(void)
        at91_set_A_periph(AT91_PIN_PA24, 0);            /* TWCK */
        at91_set_multi_drive(AT91_PIN_PA24, 1);
 
+       i2c_register_board_info(0, devices, nr_devices);
        platform_device_register(&at91sam9rl_twi_device);
 }
 #else
-void __init at91_add_device_i2c(void) {}
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 #endif
 
 

diff --git a/arch/arm/mach-at91/board-carmeva.c b/arch/arm/mach-at91/board-carmeva.c
index 76ec856cd4f9fb0ee8ad54f1a54eba769172804d..0f0878294a67c660a8bb2e3b291f5c85212cd3f6 100644 (file)
--- a/arch/arm/mach-at91/board-carmeva.c
+++ b/arch/arm/mach-at91/board-carmeva.c
@@ -128,7 +128,7 @@ static void __init carmeva_board_init(void)
        /* USB Device */
        at91_add_device_udc(&carmeva_udc_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
        /* SPI */
        at91_add_device_spi(carmeva_spi_devices, ARRAY_SIZE(carmeva_spi_devices));
        /* Compact Flash */

diff --git a/arch/arm/mach-at91/board-csb337.c b/arch/arm/mach-at91/board-csb337.c
index dde089922e3bda6afaad9efed6335d38efe7c172..d0aa20c9383e355da4e313e35fd533cb49269263 100644 (file)
--- a/arch/arm/mach-at91/board-csb337.c
+++ b/arch/arm/mach-at91/board-csb337.c
@@ -23,7 +23,6 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/i2c.h>
 #include <linux/spi/spi.h>
 #include <linux/mtd/physmap.h>
 
@@ -85,12 +84,12 @@ static struct at91_udc_data __initdata csb337_udc_data = {
 };
 
 static struct i2c_board_info __initdata csb337_i2c_devices[] = {
-       { I2C_BOARD_INFO("rtc-ds1307", 0x68),
-         .type = "ds1307",
+       {
+               I2C_BOARD_INFO("rtc-ds1307", 0x68),
+               .type   = "ds1307",
        },
 };
 
-
 static struct at91_cf_data __initdata csb337_cf_data = {
        /*
         * connector P4 on the CSB 337 mates to
@@ -168,9 +167,7 @@ static void __init csb337_board_init(void)
        /* USB Device */
        at91_add_device_udc(&csb337_udc_data);
        /* I2C */
-       at91_add_device_i2c();
-       i2c_register_board_info(0, csb337_i2c_devices,
-                       ARRAY_SIZE(csb337_i2c_devices));
+       at91_add_device_i2c(csb337_i2c_devices, ARRAY_SIZE(csb337_i2c_devices));
        /* Compact Flash */
        at91_set_gpio_input(AT91_PIN_PB22, 1);          /* IOIS16 */
        at91_add_device_cf(&csb337_cf_data);

diff --git a/arch/arm/mach-at91/board-csb637.c b/arch/arm/mach-at91/board-csb637.c
index 77f04b935b3ab9753110ab15678acdca7a402718..c5c721d27f429291d2f86efb925f2fa1e1dd07be 100644 (file)
--- a/arch/arm/mach-at91/board-csb637.c
+++ b/arch/arm/mach-at91/board-csb637.c
@@ -129,7 +129,7 @@ static void __init csb637_board_init(void)
        /* USB Device */
        at91_add_device_udc(&csb637_udc_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
        /* SPI */
        at91_add_device_spi(NULL, 0);
        /* NOR flash */

diff --git a/arch/arm/mach-at91/board-dk.c b/arch/arm/mach-at91/board-dk.c
index af497896a96ce761dcb6a45281a7148e1c7e3bd6..40c9e4331706b0a32cac592603bfba036ccefa88 100644 (file)
--- a/arch/arm/mach-at91/board-dk.c
+++ b/arch/arm/mach-at91/board-dk.c
@@ -124,6 +124,19 @@ static struct spi_board_info dk_spi_devices[] = {
 #endif
 };
 
+static struct i2c_board_info __initdata dk_i2c_devices[] = {
+       {
+               I2C_BOARD_INFO("ics1523", 0x26),
+       },
+       {
+               I2C_BOARD_INFO("x9429", 0x28),
+       },
+       {
+               I2C_BOARD_INFO("at24c", 0x50),
+               .type   = "24c1024",
+       }
+};
+
 static struct mtd_partition __initdata dk_nand_partition[] = {
        {
                .name   = "NAND Partition 1",
@@ -185,7 +198,7 @@ static void __init dk_board_init(void)
        /* Compact Flash */
        at91_add_device_cf(&dk_cf_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(dk_i2c_devices, ARRAY_SIZE(dk_i2c_devices));
        /* SPI */
        at91_add_device_spi(dk_spi_devices, ARRAY_SIZE(dk_spi_devices));
 #ifdef CONFIG_MTD_AT91_DATAFLASH_CARD

diff --git a/arch/arm/mach-at91/board-eb9200.c b/arch/arm/mach-at91/board-eb9200.c
index 20458b5548f0669708eeab4f64baf2ceec1301d7..b7b79bb9d6c4b09bd464225adb1e15a415ff16d8 100644 (file)
--- a/arch/arm/mach-at91/board-eb9200.c
+++ b/arch/arm/mach-at91/board-eb9200.c
@@ -91,6 +91,14 @@ static struct at91_mmc_data __initdata eb9200_mmc_data = {
        .wire4          = 1,
 };
 
+static struct i2c_board_info __initdata eb9200_i2c_devices[] = {
+       {
+               I2C_BOARD_INFO("at24c", 0x50),
+               .type   = "24c512",
+       },
+};
+
+
 static void __init eb9200_board_init(void)
 {
        /* Serial */
@@ -102,7 +110,7 @@ static void __init eb9200_board_init(void)
        /* USB Device */
        at91_add_device_udc(&eb9200_udc_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(eb9200_i2c_devices, ARRAY_SIZE(eb9200_i2c_devices));
        /* Compact Flash */
        at91_add_device_cf(&eb9200_cf_data);
        /* SPI */

diff --git a/arch/arm/mach-at91/board-ek.c b/arch/arm/mach-at91/board-ek.c
index 322fdd75a1e431863729b478988cef8d7d8e708d..d05b1b2be9fbe34fd70a0c2912a8372f999f13bc 100644 (file)
--- a/arch/arm/mach-at91/board-ek.c
+++ b/arch/arm/mach-at91/board-ek.c
@@ -145,7 +145,7 @@ static void __init ek_board_init(void)
        at91_add_device_udc(&ek_udc_data);
        at91_set_multi_drive(ek_udc_data.pullup_pin, 1);        /* pullup_pin is connected to reset */
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
        /* SPI */
        at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 #ifdef CONFIG_MTD_AT91_DATAFLASH_CARD

diff --git a/arch/arm/mach-at91/board-kafa.c b/arch/arm/mach-at91/board-kafa.c
index c77d84ce9cae89878b81f68648f49619fab768d6..cf1b7b2f76fbe180a3f8a9537ac4c58c728c798c 100644 (file)
--- a/arch/arm/mach-at91/board-kafa.c
+++ b/arch/arm/mach-at91/board-kafa.c
@@ -92,7 +92,7 @@ static void __init kafa_board_init(void)
        /* USB Device */
        at91_add_device_udc(&kafa_udc_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
        /* SPI */
        at91_add_device_spi(NULL, 0);
 }

diff --git a/arch/arm/mach-at91/board-kb9202.c b/arch/arm/mach-at91/board-kb9202.c
index 7d9b1a278fd63feb961e3ff21466952bae530dd2..4b39b9cda75b48e84b9f49bae5c4f302efa27480 100644 (file)
--- a/arch/arm/mach-at91/board-kb9202.c
+++ b/arch/arm/mach-at91/board-kb9202.c
@@ -124,7 +124,7 @@ static void __init kb9202_board_init(void)
        /* MMC */
        at91_add_device_mmc(0, &kb9202_mmc_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
        /* SPI */
        at91_add_device_spi(NULL, 0);
        /* NAND */

diff --git a/arch/arm/mach-at91/board-picotux200.c b/arch/arm/mach-at91/board-picotux200.c
index 49cfe7ab4a85652206bf8b4ac6f21b88f16166fb..6acb55c09ae5d384c5e28b9483d0193bbdabe7a1 100644 (file)
--- a/arch/arm/mach-at91/board-picotux200.c
+++ b/arch/arm/mach-at91/board-picotux200.c
@@ -139,7 +139,7 @@ static void __init picotux200_board_init(void)
        // at91_add_device_udc(&picotux200_udc_data);
        // at91_set_multi_drive(picotux200_udc_data.pullup_pin, 1);     /* pullup_pin is connected to reset */
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
        /* SPI */
        // at91_add_device_spi(picotux200_spi_devices, ARRAY_SIZE(picotux200_spi_devices));
 #ifdef CONFIG_MTD_AT91_DATAFLASH_CARD

diff --git a/arch/arm/mach-at91/board-sam9260ek.c b/arch/arm/mach-at91/board-sam9260ek.c
index 65fa532bb4acd134e0945affbe336d33187f7a40..b343a6c28120b2824597d11ab8754a2a699107da 100644 (file)
--- a/arch/arm/mach-at91/board-sam9260ek.c
+++ b/arch/arm/mach-at91/board-sam9260ek.c
@@ -189,7 +189,7 @@ static void __init ek_board_init(void)
        /* MMC */
        at91_add_device_mmc(0, &ek_mmc_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
 }
 
 MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")

diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c
index 42e172cb0f49bfe2d0e40d9382d574234f712f3e..b62a5e6eaa4db4bfc77f85c8e5cfdbf9606192d6 100644 (file)
--- a/arch/arm/mach-at91/board-sam9261ek.c
+++ b/arch/arm/mach-at91/board-sam9261ek.c
@@ -406,7 +406,7 @@ static void __init ek_board_init(void)
        /* USB Device */
        at91_add_device_udc(&ek_udc_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
        /* NAND */
        at91_add_device_nand(&ek_nand_data);
        /* DM9000 ethernet */

diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c
index 2a1cc73390b79cd88943d7718c3fd3454d3c65fa..ab9dcc0754541f5f952e934c439e525beebf6b7a 100644 (file)
--- a/arch/arm/mach-at91/board-sam9263ek.c
+++ b/arch/arm/mach-at91/board-sam9263ek.c
@@ -291,7 +291,7 @@ static void __init ek_board_init(void)
        /* NAND */
        at91_add_device_nand(&ek_nand_data);
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
        /* LCD Controller */
        at91_add_device_lcdc(&ek_lcdc_data);
        /* AC97 */

diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c
index 9b61320f295aca158355be2ad7ead7596a2cb385..bc0546d7245f7b7df7f125ee4545335cbc1a0586 100644 (file)
--- a/arch/arm/mach-at91/board-sam9rlek.c
+++ b/arch/arm/mach-at91/board-sam9rlek.c
@@ -181,7 +181,7 @@ static void __init ek_board_init(void)
        /* Serial */
        at91_add_device_serial();
        /* I2C */
-       at91_add_device_i2c();
+       at91_add_device_i2c(NULL, 0);
        /* NAND */
        at91_add_device_nand(&ek_nand_data);
        /* SPI */

diff --git a/include/asm-arm/arch-at91/board.h b/include/asm-arm/arch-at91/board.h
index c0d7075982c16d9dee7884c8b0c29080de97b559..79054965baa636c41582d928a29def0c63286477 100644 (file)
--- a/include/asm-arm/arch-at91/board.h
+++ b/include/asm-arm/arch-at91/board.h
@@ -33,6 +33,7 @@
 
 #include <linux/mtd/partitions.h>
 #include <linux/device.h>
+#include <linux/i2c.h>
 #include <linux/spi/spi.h>
 
  /* USB Device */
@@ -94,7 +95,7 @@ struct at91_nand_data {
 extern void __init at91_add_device_nand(struct at91_nand_data *data);
 
  /* I2C*/
-extern void __init at91_add_device_i2c(void);
+extern void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices);
 
  /* SPI */
 extern void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices);