regulator_get_linear_step
align->step_uv = regulator_get_linear_step(reg);
int step_volt = regulator_get_linear_step(drv->vdd_apc);
step_uV = regulator_get_linear_step(drv->vdd_apc);
step_volt = regulator_get_linear_step(drv->vdd_apc);
EXPORT_SYMBOL_GPL(regulator_get_linear_step);
if ((regulator_get_linear_step(ctrl_reg) == 1) ||
unsigned int regulator_get_linear_step(struct regulator *regulator);