i2c: Add platform driver on top of the new pca-algorithm

Tested on a blackfin.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

include/linux/i2c-pca-platform.h

@@ -0,0 +1,12 @@
+#ifndef I2C_PCA9564_PLATFORM_H
+#define I2C_PCA9564_PLATFORM_H
+
+struct i2c_pca9564_pf_platform_data {
+	int gpio;		/* pin to reset chip. driver will work when
+				 * not supplied (negative value), but it
+				 * cannot exit some error conditions then */
+	int i2c_clock_speed;	/* values are defined in linux/i2c-algo-pca.h */
+	int timeout;		/* timeout = this value * 10us */
+};
+
+#endif /* I2C_PCA9564_PLATFORM_H */