mgcoge, mgsuvd: add I2C support.
Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/include/configs/mgcoge.h b/include/configs/mgcoge.h
index 23af3ec..159eeae 100644
--- a/include/configs/mgcoge.h
+++ b/include/configs/mgcoge.h
@@ -82,6 +82,7 @@
#include <config_cmd_default.h>
#define CONFIG_CMD_ECHO
+#define CONFIG_CMD_I2C
#define CONFIG_CMD_IMMAP
#define CONFIG_CMD_MII
#define CONFIG_CMD_PING
@@ -176,6 +177,30 @@
#define CONFIG_ENV_ADDR (CFG_MONITOR_BASE + CFG_MONITOR_LEN)
#endif /* CONFIG_ENV_IS_IN_FLASH */
+/* enable I2C and select the hardware/software driver */
+#undef CONFIG_HARD_I2C /* I2C with hardware support */
+#define CONFIG_SOFT_I2C 1 /* I2C bit-banged */
+#define CFG_I2C_SPEED 50000 /* I2C speed and slave address */
+#define CFG_I2C_SLAVE 0x7F
+
+/*
+ * Software (bit-bang) I2C driver configuration
+ */
+
+#define I2C_PORT 3 /* Port A=0, B=1, C=2, D=3 */
+#define I2C_ACTIVE (iop->pdir |= 0x00010000)
+#define I2C_TRISTATE (iop->pdir &= ~0x00010000)
+#define I2C_READ ((iop->pdat & 0x00010000) != 0)
+#define I2C_SDA(bit) if(bit) iop->pdat |= 0x00010000; \
+ else iop->pdat &= ~0x00010000
+#define I2C_SCL(bit) if(bit) iop->pdat |= 0x00020000; \
+ else iop->pdat &= ~0x00020000
+#define I2C_DELAY udelay(5) /* 1/4 I2C clock duration */
+
+#define CONFIG_I2C_MULTI_BUS 1
+#define CONFIG_I2C_CMD_TREE 1
+#define CFG_MAX_I2C_BUS 2
+
#define CFG_IMMR 0xF0000000
#define CFG_INIT_RAM_ADDR CFG_IMMR
diff --git a/include/configs/mgsuvd.h b/include/configs/mgsuvd.h
index 740767e..f2cfe6e 100644
--- a/include/configs/mgsuvd.h
+++ b/include/configs/mgsuvd.h
@@ -113,6 +113,7 @@
#define CONFIG_CMD_ASKENV
#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_I2C
#define CONFIG_CMD_NFS
#define CONFIG_CMD_PING
@@ -330,4 +331,46 @@
#define OF_TBCLK (bd->bi_busfreq / 4)
#define OF_STDOUT_PATH "/soc/cpm/serial@a80"
+/* enable I2C and select the hardware/software driver */
+#undef CONFIG_HARD_I2C /* I2C with hardware support */
+#define CONFIG_SOFT_I2C 1 /* I2C bit-banged */
+#define CFG_I2C_SPEED 50000 /* I2C speed and slave address */
+#define CFG_I2C_SLAVE 0x7F
+#define I2C_SOFT_DECLARATIONS
+
+/*
+ * Software (bit-bang) I2C driver configuration
+ */
+#define I2C_BASE_DIR (CFG_PIGGY_BASE + 0x04)
+#define I2C_BASE_PORT (CFG_PIGGY_BASE + 0x09)
+
+#define SDA_BIT 0x40
+#define SCL_BIT 0x80
+#define SDA_CONF 0x1000
+#define SCL_CONF 0x2000
+
+#define I2C_ACTIVE do {} while (0)
+#define I2C_TRISTATE do {} while (0)
+#define I2C_READ i2c_soft_read_pin ()
+#define I2C_SDA(bit) if(bit) { \
+ *(unsigned short *)(I2C_BASE_DIR) &= ~SDA_CONF; \
+ } \
+ else { \
+ *(unsigned char *)(I2C_BASE_PORT) &= ~SDA_BIT; \
+ *(unsigned short *)(I2C_BASE_DIR) |= SDA_CONF; \
+ }
+#define I2C_SCL(bit) if(bit) { \
+ *(unsigned short *)(I2C_BASE_DIR) &= ~SCL_CONF; \
+ } \
+ else { \
+ *(unsigned char *)(I2C_BASE_PORT) &= ~SCL_BIT; \
+ *(unsigned short *)(I2C_BASE_DIR) |= SCL_CONF; \
+ }
+#define I2C_DELAY udelay(50) /* 1/4 I2C clock duration */
+
+#define CONFIG_I2C_MULTI_BUS 1
+#define CONFIG_I2C_CMD_TREE 1
+#define CFG_MAX_I2C_BUS 2
+
+
#endif /* __CONFIG_H */