mxc_i2c: add support for MX53 processor

[u-boot] / drivers / i2c / soft_i2c.c

diff --git a/drivers/i2c/soft_i2c.c b/drivers/i2c/soft_i2c.c
index 185634d51003d4a3512b52f050f15a20d5dc0fb7..69b5f42205f427255344ad55913896d426774464 100644 (file)
--- a/drivers/i2c/soft_i2c.c
+++ b/drivers/i2c/soft_i2c.c
@@ -30,9 +30,13 @@
 #include <ioports.h>
 #include <asm/io.h>
 #endif
-#ifdef CONFIG_AT91RM9200               /* need this for the at91rm9200 */
+#if defined(CONFIG_AT91FAMILY)
 #include <asm/io.h>
 #include <asm/arch/hardware.h>
+#include <asm/arch/at91_pio.h>
+#ifdef CONFIG_AT91_LEGACY
+#include <asm/arch/gpio.h>
+#endif
 #endif
 #ifdef CONFIG_IXP425                   /* only valid for IXP425 */
 #include <asm/arch/ixp425.h>
@@ -45,6 +49,58 @@
 #endif
 #include <i2c.h>
 
+#if defined(CONFIG_SOFT_I2C_GPIO_SCL)
+# include <asm/gpio.h>
+
+# ifndef I2C_GPIO_SYNC
+#  define I2C_GPIO_SYNC
+# endif
+
+# ifndef I2C_INIT
+#  define I2C_INIT \
+       do { \
+               gpio_request(CONFIG_SOFT_I2C_GPIO_SCL, "soft_i2c"); \
+               gpio_request(CONFIG_SOFT_I2C_GPIO_SDA, "soft_i2c"); \
+       } while (0)
+# endif
+
+# ifndef I2C_ACTIVE
+#  define I2C_ACTIVE do { } while (0)
+# endif
+
+# ifndef I2C_TRISTATE
+#  define I2C_TRISTATE do { } while (0)
+# endif
+
+# ifndef I2C_READ
+#  define I2C_READ gpio_get_value(CONFIG_SOFT_I2C_GPIO_SDA)
+# endif
+
+# ifndef I2C_SDA
+#  define I2C_SDA(bit) \
+       do { \
+               if (bit) \
+                       gpio_direction_input(CONFIG_SOFT_I2C_GPIO_SDA); \
+               else \
+                       gpio_direction_output(CONFIG_SOFT_I2C_GPIO_SDA, 0); \
+               I2C_GPIO_SYNC; \
+       } while (0)
+# endif
+
+# ifndef I2C_SCL
+#  define I2C_SCL(bit) \
+       do { \
+               gpio_direction_output(CONFIG_SOFT_I2C_GPIO_SCL, bit); \
+               I2C_GPIO_SYNC; \
+       } while (0)
+# endif
+
+# ifndef I2C_DELAY
+#  define I2C_DELAY udelay(5)  /* 1/4 I2C clock duration */
+# endif
+
+#endif
+
 /* #define     DEBUG_I2C       */
 
 #ifdef DEBUG_I2C
@@ -244,20 +300,6 @@ int i2c_set_bus_num(unsigned int bus)
 }
 #endif
 
-/* TODO: add 100/400k switching */
-unsigned int i2c_get_bus_speed(void)
-{
-       return CONFIG_SYS_I2C_SPEED;
-}
-
-int i2c_set_bus_speed(unsigned int speed)
-{
-       if (speed != CONFIG_SYS_I2C_SPEED)
-               return -1;
-
-       return 0;
-}
-
 /*-----------------------------------------------------------------------
  * if ack == I2C_ACK, ACK the byte so can continue reading, else
  * send I2C_NOACK to end the read.