KEYP_CTRL
rc = regmap_read(kp->regmap, KEYP_CTRL, &ctrl_val);
rc = regmap_write(kp->regmap, KEYP_CTRL, ctrl_val);
rc = regmap_write(kp->regmap, KEYP_CTRL, kp->ctrl_reg);
rc = regmap_write(kp->regmap, KEYP_CTRL, kp->ctrl_reg);
rc = regmap_read(kp->regmap, KEYP_CTRL, &ctrl_val);
if (twl4030_kpwrite_u8(kp, reg, KEYP_CTRL) < 0)