ICMSR
writel(~val & 0x7f, priv->io + ICMSR);
rcar_i2c_write(priv, ICMSR, 0);
rcar_i2c_write(priv, ICMSR, 0); /* must be before preparing msg */
rcar_i2c_write(priv, ICMSR, 0);
msr = rcar_i2c_read(priv, ICMSR);
msr = rcar_i2c_read(priv, ICMSR);
u32 msr = rcar_i2c_read(priv, ICMSR);