Re: [v4] PCI: dwc: Add the debugfs property to provide the LTSSM status of the PCIe link

[Hans Zhang]

On 2025/2/23 00:39, Manivannan Sadhasivam wrote:
> > +
> > +What:		/sys/kernel/debug/dwc_pcie_<dev>/ltssm_status
> > +Date:		February 2025
> > +Contact:	Hans Zhang <18255117159@xxxxxxx>
> > +Description:	(RO) Read will return the current value of the PCIe link status raw value and
> > +		string status.
>
> 'Read will return the current PCIe LTSSM state in both string and raw value.'
>
> >   
> > +char *dw_ltssm_sts_string(enum dw_pcie_ltssm ltssm)
>
> const char *dw_pcie_ltssm_string()
>
> > +{
> > +	char *str;
>
> const char *
>
> > +
> > +	switch (ltssm) {
> > +#define DW_PCIE_LTSSM_NAME(n) case n: str = #n; break
> > @@ -683,6 +714,8 @@ static inline enum dw_pcie_ltssm dw_pcie_get_ltssm(struct dw_pcie *pci)
> >   	return (enum dw_pcie_ltssm)FIELD_GET(PORT_LOGIC_LTSSM_STATE_MASK, val);
> >   }
> >   
> > +char *dw_ltssm_sts_string(enum dw_pcie_ltssm ltssm);
>
> const char *dw_pcie_ltssm_string()

These recommendations will be changed in the next version.

Thank you very much Mani.

Best regards
Hans