ICSSR
rcar_i2c_write(priv, ICSSR, 0);
rcar_i2c_write(priv, ICSSR, 0);
ssr_raw = rcar_i2c_read(priv, ICSSR) & 0xff;
rcar_i2c_write(priv, ICSSR, ~(SAR | SSR) & 0xff);
rcar_i2c_write(priv, ICSSR, ~SSR & 0xff);
rcar_i2c_write(priv, ICSSR, ~SDR & 0xff);
rcar_i2c_write(priv, ICSSR, ~SDE & 0xff);