2022-02-06 19:52:07

by Russell King (Oracle)

[permalink] [raw]
Subject: Re: [PATCH v7 net-next 06/10] net: dsa: microchip: add support for phylink management

Hi,

On Fri, Feb 04, 2022 at 11:14:56PM +0530, Prasanna Vengateshan wrote:
> +static void lan937x_phylink_mac_link_up(struct dsa_switch *ds, int port,
> + unsigned int mode,
> + phy_interface_t interface,
> + struct phy_device *phydev,
> + int speed, int duplex,
> + bool tx_pause, bool rx_pause)
> +{
> + struct ksz_device *dev = ds->priv;
> +
> + /* Internal PHYs */
> + if (lan937x_is_internal_phy_port(dev, port))
> + return;
> +
> + if (phylink_autoneg_inband(mode)) {
> + dev_err(ds->dev, "In-band AN not supported!\n");
> + return;
> + }

No need to check this in the link_up() method - if this were true,
you've already printed an error in the mac_config() method and this
one doesn't provide any additional useful information.

> +
> + lan937x_config_interface(dev, port, speed, duplex,
> + tx_pause, rx_pause);
> +}
> +
> +static void lan937x_phylink_get_caps(struct dsa_switch *ds, int port,
> + struct phylink_config *config)
> +{
> + struct ksz_device *dev = ds->priv;
> +
> + config->mac_capabilities = MAC_100FD;
> +
> + /* internal T1 PHY */
> + if (lan937x_is_internal_base_t1_phy_port(dev, port)) {
> + __set_bit(PHY_INTERFACE_MODE_INTERNAL,
> + config->supported_interfaces);
> + } else {
> + /* MII/RMII/RGMII ports */
> + if (!lan937x_is_internal_base_tx_phy_port(dev, port)) {

Please consider:

} else if (!lan937x_is_internal_base_tx_phy_port(dev, port)) {
/* MII/RMII/RGMII ports */
...
}

to avoid needing two tabs to indent, which probably makes:

> + config->mac_capabilities |= MAC_100HD | MAC_SYM_PAUSE |
> + MAC_ASYM_PAUSE | MAC_10 |
> + MAC_1000FD;

able to be laid out with the two pause modes first followed by the
speeds.

> + phy_interface_set_rgmii(config->supported_interfaces);
> +
> + __set_bit(PHY_INTERFACE_MODE_MII,
> + config->supported_interfaces);
> + __set_bit(PHY_INTERFACE_MODE_RMII,
> + config->supported_interfaces);
> + }
> + }

You seem to be a non-legacy driver in this patch (good!) so please also
add:

config->legacy_pre_march2020 = false;

while DSA is transitioned over. Thanks.

> +}
> +
> const struct dsa_switch_ops lan937x_switch_ops = {
> .get_tag_protocol = lan937x_get_tag_protocol,
> .setup = lan937x_setup,

Thanks.

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