spmi_vreg_read
spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1);
spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1);
spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1);
spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1);
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version,
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, ®, 1);
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, ®, 1);
ret = spmi_vreg_read(vreg, SPMI_HFSMPS_REG_STEP_CTRL, ®, 1);
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1);
spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
spmi_vreg_read(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &selector, 1);