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[net-next,2/3] net: pcs: pcs-mtk-lynxi: implement pcs_inband_caps() method

Message ID E1tJ8NR-006L5P-E3@rmk-PC.armlinux.org.uk (mailing list archive)
State New
Headers show
Series net: net: add negotiation of in-band capabilities (remainder) | expand

Commit Message

Russell King (Oracle) Dec. 5, 2024, 9:42 a.m. UTC
Report the PCS in-band capabilities to phylink for the LynxI PCS.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/pcs/pcs-mtk-lynxi.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

Comments

Daniel Golle Dec. 8, 2024, 3:01 a.m. UTC | #1
On Thu, Dec 05, 2024 at 09:42:29AM +0000, Russell King (Oracle) wrote:
> Report the PCS in-band capabilities to phylink for the LynxI PCS.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
> ---
>  drivers/net/pcs/pcs-mtk-lynxi.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/drivers/net/pcs/pcs-mtk-lynxi.c b/drivers/net/pcs/pcs-mtk-lynxi.c
> index 4f63abe638c4..7de804535229 100644
> --- a/drivers/net/pcs/pcs-mtk-lynxi.c
> +++ b/drivers/net/pcs/pcs-mtk-lynxi.c
> @@ -88,6 +88,21 @@ static struct mtk_pcs_lynxi *pcs_to_mtk_pcs_lynxi(struct phylink_pcs *pcs)
>  	return container_of(pcs, struct mtk_pcs_lynxi, pcs);
>  }
>  
> +static unsigned int mtk_pcs_lynxi_inband_caps(struct phylink_pcs *pcs,
> +					      phy_interface_t interface)
> +{
> +	switch (interface) {
> +	case PHY_INTERFACE_MODE_1000BASEX:
> +	case PHY_INTERFACE_MODE_2500BASEX:
> +	case PHY_INTERFACE_MODE_SGMII:
> +	case PHY_INTERFACE_MODE_QSGMII:

QSGMII is not supported by this PCS.

Apart from that looks good to me.

Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Russell King (Oracle) Dec. 8, 2024, 9:13 a.m. UTC | #2
On Sun, Dec 08, 2024 at 03:01:38AM +0000, Daniel Golle wrote:
> On Thu, Dec 05, 2024 at 09:42:29AM +0000, Russell King (Oracle) wrote:
> > Report the PCS in-band capabilities to phylink for the LynxI PCS.
> > 
> > Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
> > ---
> >  drivers/net/pcs/pcs-mtk-lynxi.c | 16 ++++++++++++++++
> >  1 file changed, 16 insertions(+)
> > 
> > diff --git a/drivers/net/pcs/pcs-mtk-lynxi.c b/drivers/net/pcs/pcs-mtk-lynxi.c
> > index 4f63abe638c4..7de804535229 100644
> > --- a/drivers/net/pcs/pcs-mtk-lynxi.c
> > +++ b/drivers/net/pcs/pcs-mtk-lynxi.c
> > @@ -88,6 +88,21 @@ static struct mtk_pcs_lynxi *pcs_to_mtk_pcs_lynxi(struct phylink_pcs *pcs)
> >  	return container_of(pcs, struct mtk_pcs_lynxi, pcs);
> >  }
> >  
> > +static unsigned int mtk_pcs_lynxi_inband_caps(struct phylink_pcs *pcs,
> > +					      phy_interface_t interface)
> > +{
> > +	switch (interface) {
> > +	case PHY_INTERFACE_MODE_1000BASEX:
> > +	case PHY_INTERFACE_MODE_2500BASEX:
> > +	case PHY_INTERFACE_MODE_SGMII:
> > +	case PHY_INTERFACE_MODE_QSGMII:
> 
> QSGMII is not supported by this PCS.

Well...
- lynx_pcs_get_state(), lynx_pcs_config(), and lynx_pcs_link_up()
  include QSGMII in their case statements.
- lynx_pcs_config_giga() refers to QSGMII in a comment, grouping it
  with SGMII configuration.

I think if the hardware doesn't support QSGMII, these references to it
should be removed?

I also think that adding a .pcs_validate() method would be a good idea
to reject interface modes that the PCS does not support.

> Apart from that looks good to me.
> 
> Reviewed-by: Daniel Golle <daniel@makrotopia.org>

Thanks.
diff mbox series

Patch

diff --git a/drivers/net/pcs/pcs-mtk-lynxi.c b/drivers/net/pcs/pcs-mtk-lynxi.c
index 4f63abe638c4..7de804535229 100644
--- a/drivers/net/pcs/pcs-mtk-lynxi.c
+++ b/drivers/net/pcs/pcs-mtk-lynxi.c
@@ -88,6 +88,21 @@  static struct mtk_pcs_lynxi *pcs_to_mtk_pcs_lynxi(struct phylink_pcs *pcs)
 	return container_of(pcs, struct mtk_pcs_lynxi, pcs);
 }
 
+static unsigned int mtk_pcs_lynxi_inband_caps(struct phylink_pcs *pcs,
+					      phy_interface_t interface)
+{
+	switch (interface) {
+	case PHY_INTERFACE_MODE_1000BASEX:
+	case PHY_INTERFACE_MODE_2500BASEX:
+	case PHY_INTERFACE_MODE_SGMII:
+	case PHY_INTERFACE_MODE_QSGMII:
+		return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+	default:
+		return 0;
+	}
+}
+
 static void mtk_pcs_lynxi_get_state(struct phylink_pcs *pcs,
 				    struct phylink_link_state *state)
 {
@@ -241,6 +256,7 @@  static void mtk_pcs_lynxi_disable(struct phylink_pcs *pcs)
 }
 
 static const struct phylink_pcs_ops mtk_pcs_lynxi_ops = {
+	.pcs_inband_caps = mtk_pcs_lynxi_inband_caps,
 	.pcs_get_state = mtk_pcs_lynxi_get_state,
 	.pcs_config = mtk_pcs_lynxi_config,
 	.pcs_an_restart = mtk_pcs_lynxi_restart_an,