OMAP3: Add I2C support
Add I2C support.
Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index 6079c05..12e9e05 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -29,6 +29,7 @@
COBJS-$(CONFIG_I2C_MXC) += mxc_i2c.o
COBJS-$(CONFIG_DRIVER_OMAP1510_I2C) += omap1510_i2c.o
COBJS-$(CONFIG_DRIVER_OMAP24XX_I2C) += omap24xx_i2c.o
+COBJS-$(CONFIG_DRIVER_OMAP34XX_I2C) += omap24xx_i2c.o
COBJS-$(CONFIG_SOFT_I2C) += soft_i2c.o
COBJS-$(CONFIG_TSI108_I2C) += tsi108_i2c.o
diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
index 4427938..6784603 100644
--- a/drivers/i2c/omap24xx_i2c.c
+++ b/drivers/i2c/omap24xx_i2c.c
@@ -109,7 +109,11 @@
status = wait_for_pin ();
if (status & I2C_STAT_RRDY) {
+#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX)
+ *value = readb (I2C_DATA);
+#else
*value = readw (I2C_DATA);
+#endif
udelay (20000);
} else {
i2c_error = 1;
@@ -150,8 +154,23 @@
status = wait_for_pin ();
if (status & I2C_STAT_XRDY) {
+#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX)
+ /* send out 1 byte */
+ writeb (regoffset, I2C_DATA);
+ writew (I2C_STAT_XRDY, I2C_STAT);
+
+ status = wait_for_pin ();
+ if ((status & I2C_STAT_XRDY)) {
+ /* send out next 1 byte */
+ writeb (value, I2C_DATA);
+ writew (I2C_STAT_XRDY, I2C_STAT);
+ } else {
+ i2c_error = 1;
+ }
+#else
/* send out two bytes */
writew ((value << 8) + regoffset, I2C_DATA);
+#endif
/* must have enough delay to allow BB bit to go low */
udelay (50000);
if (readw (I2C_STAT) & I2C_STAT_NACK) {
@@ -188,7 +207,11 @@
while(1){
stat = readw(I2C_STAT);
if(stat == I2C_STAT_RRDY){
+#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX)
+ readb(I2C_DATA);
+#else
readw(I2C_DATA);
+#endif
writew(I2C_STAT_RRDY,I2C_STAT);
udelay(1000);
}else