RNG_CONTROL_ENABLE_TRNG_MASK
if (omap_rng_read(priv, RNG_CONTROL_REG) & RNG_CONTROL_ENABLE_TRNG_MASK)
val = RNG_CONTROL_ENABLE_TRNG_MASK;
if (omap_rng_read(priv, RNG_CONTROL_REG) & RNG_CONTROL_ENABLE_TRNG_MASK)
val |= RNG_CONTROL_ENABLE_TRNG_MASK;
val &= ~RNG_CONTROL_ENABLE_TRNG_MASK;