use i2c-gpio as the hw ip is broken
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
---
arch/arm/mach-at91/at91sam9261_devices.c | 31 ++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/arch/arm/mach-at91/at91sam9261_devices.c
b/arch/arm/mach-at91/at91sam9261_devices.c
index 0091e2d..68d75c3 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -20,6 +20,7 @@
#include <mach/gpio.h>
#include <mach/io.h>
#include <mach/cpu.h>
+#include <i2c/i2c-gpio.h>
#include "generic.h"
@@ -107,6 +108,36 @@ void at91_add_device_nand(struct atmel_nand_data *data) {}
#endif
/* --------------------------------------------------------------------
+ * TWI (i2c)
+ * -------------------------------------------------------------------- */
+#if defined(CONFIG_I2C_GPIO)
+static struct i2c_gpio_platform_data pdata_i2c = {
+ .sda_pin = AT91_PIN_PA7,
+ .sda_is_open_drain = 1,
+ .scl_pin = AT91_PIN_PA8,
+ .scl_is_open_drain = 1,
+ .udelay = 5, /* ~100 kHz */
+};
+
+void at91_add_device_i2c(short i2c_id, struct i2c_board_info *devices, int
nr_devices)
+{
+ struct i2c_gpio_platform_data *pdata = &pdata_i2c;
+
+ i2c_register_board_info(0, devices, nr_devices);
+
+ at91_set_GPIO_periph(pdata->sda_pin, 1); /* TWD (SDA) */
+ at91_set_multi_drive(pdata->sda_pin, 1);
+
+ at91_set_GPIO_periph(pdata->scl_pin, 1); /* TWCK (SCL) */
+ at91_set_multi_drive(pdata->scl_pin, 1);
+
+ add_generic_device_res("i2c-gpio", 0, NULL, 0, pdata);
+}
+#else
+void at91_add_device_i2c(short i2c_id, struct i2c_board_info *devices, int
nr_devices) {}
+#endif
+
+/* --------------------------------------------------------------------
* SPI
* -------------------------------------------------------------------- */
--
1.7.10.4
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