RE: [PATCH RFC net-next 13/13] net: phylink: add interface to configure clause 22 PCS PHY

[Ioana Ciornei <ioana.ciornei@nxp.com>]

> Subject: [PATCH RFC net-next 13/13] net: phylink: add interface to configure
> clause 22 PCS PHY
> 
> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
> ---

Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>


>  drivers/net/phy/phylink.c | 37 +++++++++++++++++++++++++++++++++++++
>  include/linux/phylink.h   |  3 +++
>  2 files changed, 40 insertions(+)
> 
> diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index
> fbc8591b474b..d6c5e900a2f1 100644
> --- a/drivers/net/phy/phylink.c
> +++ b/drivers/net/phy/phylink.c
> @@ -2435,6 +2435,43 @@ int phylink_mii_c22_pcs_set_advertisement(struct
> mdio_device *pcs,  }
> EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_set_advertisement);
> 
> +/**
> + * phylink_mii_c22_pcs_config() - configure clause 22 PCS
> + * @pcs: a pointer to a &struct mdio_device.
> + * @mode: link autonegotiation mode
> + * @interface: the PHY interface mode being configured
> + * @advertising: the ethtool advertisement mask
> + *
> + * Configure a Clause 22 PCS PHY with the appropriate negotiation
> + * parameters for the @mode, @interface and @advertising parameters.
> + * Returns negative error number on failure, zero if the advertisement
> + * has not changed, or positive if there is a change.
> + */
> +int phylink_mii_c22_pcs_config(struct mdio_device *pcs, unsigned int mode,
> +			       phy_interface_t interface,
> +			       const unsigned long *advertising) {
> +	bool changed;
> +	u16 bmcr;
> +	int ret;
> +
> +	ret = phylink_mii_c22_pcs_set_advertisement(pcs, interface,
> +						    advertising);
> +	if (ret < 0)
> +		return ret;
> +
> +	changed = ret > 0;
> +
> +	bmcr = mode == MLO_AN_INBAND ? BMCR_ANENABLE : 0;
> +	ret = mdiobus_modify(pcs->bus, pcs->addr, MII_BMCR,
> +			     BMCR_ANENABLE, bmcr);
> +	if (ret < 0)
> +		return ret;
> +
> +	return changed ? 1 : 0;
> +}
> +EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_config);
> +
>  /**
>   * phylink_mii_c22_pcs_an_restart() - restart 802.3z autonegotiation
>   * @pcs: a pointer to a &struct mdio_device.
> diff --git a/include/linux/phylink.h b/include/linux/phylink.h index
> 057f78263a46..1aad2aea4610 100644
> --- a/include/linux/phylink.h
> +++ b/include/linux/phylink.h
> @@ -478,6 +478,9 @@ void phylink_mii_c22_pcs_get_state(struct mdio_device
> *pcs,  int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs,
>  					  phy_interface_t interface,
>  					  const unsigned long *advertising);
> +int phylink_mii_c22_pcs_config(struct mdio_device *pcs, unsigned int mode,
> +			       phy_interface_t interface,
> +			       const unsigned long *advertising);
>  void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs);
> 
>  void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,
> --
> 2.20.1