retry 3 times and print retry value.

drivers/i2c/chips/tlv320aic23.c

@@ -26,6 +26,7 @@
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/platform_device.h>
+#include <linux/delay.h>
 #include <asm/io.h>
 #include <asm/arch/aic23.h>
 #include <asm/arch/mcbsp.h>
@@ -108,15 +109,27 @@ int tlv320aic33_write_value(u8 reg, u16 value)
 #endif /* CONFIG_SENSORS_TLV320AIC33 */
 
 #ifdef CONFIG_SENSORS_TLV320AIC32
+#define I2C_RETRY_SLEEP 200
+#define I2C_RETRY_COUNT 3
 int tlv320aic32_write_value(u8 reg, u16 value)
 {
-	static struct i2c_client *client;
-	u8 val = value & 0xff;
-
-	client = new_client;
+       static struct i2c_client *client;
+       u8 val = value & 0xff;
+       int retry = I2C_RETRY_COUNT;
+       int ret = -1;
 
-	return i2c_smbus_write_byte_data(client, reg, val);
+       client = new_client;
+       printk(KERN_ERR "%s\n",__FUNCTION__) ;
+       while(retry--)
+       {
+               ret = i2c_smbus_write_byte_data(client, reg, val);
+               if (-1 != ret) break;
+               printk("!!!! sil9034_write retry [%d]\n", retry);
+               mdelay(I2C_RETRY_SLEEP);
+       }
+       return ret;
 }
+
 int tlv320aic32_read_value(u8 reg)
 {
 	static struct i2c_client *client;