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Date: Thu, 16 Dec 2021 23:29:35 +0000
From: Alvin Šipraga <ALSI@...g-olufsen.dk>
To: "luizluca@...il.com" <luizluca@...il.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC: "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
"andrew@...n.ch" <andrew@...n.ch>,
"vivien.didelot@...il.com" <vivien.didelot@...il.com>,
"f.fainelli@...il.com" <f.fainelli@...il.com>,
"olteanv@...il.com" <olteanv@...il.com>,
"arinc.unal@...nc9.com" <arinc.unal@...nc9.com>
Subject: Re: [PATCH net-next 04/13] net: dsa: realtek: convert subdrivers into
modules
On 12/16/21 21:13, luizluca@...il.com wrote:
> From: Luiz Angelo Daros de Luca <luizluca@...il.com>
>
> Preparing for multiple interfaces support, the drivers
> must be independent of realtek-smi.
>
> Tested-by: Arınç ÜNAL <arinc.unal@...nc9.com>
> Signed-off-by: Luiz Angelo Daros de Luca <luizluca@...il.com>
> ---
> drivers/net/dsa/realtek/Kconfig | 20 +++++++++++++++++--
> drivers/net/dsa/realtek/Makefile | 4 +++-
> .../{realtek-smi-core.c => realtek-smi.c} | 15 ++++++++++----
> drivers/net/dsa/realtek/rtl8365mb.c | 2 ++
> .../dsa/realtek/{rtl8366.c => rtl8366-core.c} | 0
> drivers/net/dsa/realtek/rtl8366rb.c | 2 ++
> 6 files changed, 36 insertions(+), 7 deletions(-)
> rename drivers/net/dsa/realtek/{realtek-smi-core.c => realtek-smi.c} (96%)
> rename drivers/net/dsa/realtek/{rtl8366.c => rtl8366-core.c} (100%)
>
> diff --git a/drivers/net/dsa/realtek/Kconfig b/drivers/net/dsa/realtek/Kconfig
> index bbc6e918baa6..c002a84a00f5 100644
> --- a/drivers/net/dsa/realtek/Kconfig
> +++ b/drivers/net/dsa/realtek/Kconfig
> @@ -2,8 +2,6 @@
> menuconfig NET_DSA_REALTEK
> tristate "Realtek Ethernet switch family support"
> depends on NET_DSA
> - select NET_DSA_TAG_RTL4_A
> - select NET_DSA_TAG_RTL8_4
> select FIXED_PHY
> select IRQ_DOMAIN
> select REALTEK_PHY
> @@ -17,3 +15,21 @@ config NET_DSA_REALTEK_SMI
> default y
> help
> Select to enable support for registering switches connected through SMI.
> +
> +config NET_DSA_REALTEK_RTL8365MB
> + tristate "Realtek RTL8365MB switch subdriver"
> + default y
> + depends on NET_DSA_REALTEK
> + depends on NET_DSA_REALTEK_SMI
> + select NET_DSA_TAG_RTL8_4
> + help
> + Select to enable support for Realtek RTL8365MB
> +
> +config NET_DSA_REALTEK_RTL8366RB
> + tristate "Realtek RTL8366RB switch subdriver"
> + default y
> + depends on NET_DSA_REALTEK
> + depends on NET_DSA_REALTEK_SMI
> + select NET_DSA_TAG_RTL4_A
> + help
> + Select to enable support for Realtek RTL8366RB
> diff --git a/drivers/net/dsa/realtek/Makefile b/drivers/net/dsa/realtek/Makefile
> index 323b921bfce0..8b5a4abcedd3 100644
> --- a/drivers/net/dsa/realtek/Makefile
> +++ b/drivers/net/dsa/realtek/Makefile
> @@ -1,3 +1,5 @@
> # SPDX-License-Identifier: GPL-2.0
> obj-$(CONFIG_NET_DSA_REALTEK_SMI) += realtek-smi.o
> -realtek-smi-objs := realtek-smi-core.o rtl8366.o rtl8366rb.o rtl8365mb.o
> +obj-$(CONFIG_NET_DSA_REALTEK_RTL8366RB) += rtl8366.o
Maybe this should be CONFIG_NET_DSA_REALTEK_RTL8366 (no RB)? Not that I
put my faith in Realtek's naming scheme...
> +rtl8366-objs := rtl8366-core.o rtl8366rb.o
> +obj-$(CONFIG_NET_DSA_REALTEK_RTL8365MB) += rtl8365mb.o
> diff --git a/drivers/net/dsa/realtek/realtek-smi-core.c b/drivers/net/dsa/realtek/realtek-smi.c
> similarity index 96%
> rename from drivers/net/dsa/realtek/realtek-smi-core.c
> rename to drivers/net/dsa/realtek/realtek-smi.c
> index 2c78eb5c0bdc..11447096c8dc 100644
> --- a/drivers/net/dsa/realtek/realtek-smi-core.c
> +++ b/drivers/net/dsa/realtek/realtek-smi.c
> @@ -297,7 +297,6 @@ int realtek_smi_write_reg_noack(struct realtek_priv *priv, u32 addr,
> {
> return realtek_smi_write_reg(priv, addr, data, false);
> }
> -EXPORT_SYMBOL_GPL(realtek_smi_write_reg_noack);
>
> /* Regmap accessors */
>
> @@ -342,8 +341,9 @@ static int realtek_smi_mdio_write(struct mii_bus *bus, int addr, int regnum,
> return priv->ops->phy_write(priv, addr, regnum, val);
> }
>
> -int realtek_smi_setup_mdio(struct realtek_priv *priv)
> +int realtek_smi_setup_mdio(struct dsa_switch *ds)
> {
> + struct realtek_priv *priv = (struct realtek_priv *)ds->priv;
> struct device_node *mdio_np;
> int ret;
>
> @@ -363,10 +363,10 @@ int realtek_smi_setup_mdio(struct realtek_priv *priv)
> priv->slave_mii_bus->read = realtek_smi_mdio_read;
> priv->slave_mii_bus->write = realtek_smi_mdio_write;
> snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "SMI-%d",
> - priv->ds->index);
> + ds->index);
> priv->slave_mii_bus->dev.of_node = mdio_np;
> priv->slave_mii_bus->parent = priv->dev;
> - priv->ds->slave_mii_bus = priv->slave_mii_bus;
> + ds->slave_mii_bus = priv->slave_mii_bus;
>
> ret = devm_of_mdiobus_register(priv->dev, priv->slave_mii_bus, mdio_np);
> if (ret) {
> @@ -413,6 +413,9 @@ static int realtek_smi_probe(struct platform_device *pdev)
> priv->cmd_write = var->cmd_write;
> priv->ops = var->ops;
>
> + priv->setup_interface=realtek_smi_setup_mdio;
> + priv->write_reg_noack=realtek_smi_write_reg_noack;
Formatting: a = b, not a=b.
> +
> dev_set_drvdata(dev, priv);
> spin_lock_init(&priv->lock);
>
> @@ -492,19 +495,23 @@ static void realtek_smi_shutdown(struct platform_device *pdev)
> }
>
> static const struct of_device_id realtek_smi_of_match[] = {
> +#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8366RB)
> {
> .compatible = "realtek,rtl8366rb",
> .data = &rtl8366rb_variant,
> },
> +#endif
> {
> /* FIXME: add support for RTL8366S and more */
> .compatible = "realtek,rtl8366s",
> .data = NULL,
> },
> +#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8365MB)
> {
> .compatible = "realtek,rtl8365mb",
> .data = &rtl8365mb_variant,
> },
> +#endif
> { /* sentinel */ },
> };
> MODULE_DEVICE_TABLE(of, realtek_smi_of_match);
> diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c
> index f562a6efb574..d6054f63f204 100644
> --- a/drivers/net/dsa/realtek/rtl8365mb.c
> +++ b/drivers/net/dsa/realtek/rtl8365mb.c
> @@ -1987,3 +1987,5 @@ const struct realtek_variant rtl8365mb_variant = {
> .chip_data_sz = sizeof(struct rtl8365mb),
> };
> EXPORT_SYMBOL_GPL(rtl8365mb_variant);
> +
> +MODULE_LICENSE("GPL");
You could also add MODULE_DESCRIPTION/MODULE_AUTHORs to these subdrivers
now that they are free from the core.
> diff --git a/drivers/net/dsa/realtek/rtl8366.c b/drivers/net/dsa/realtek/rtl8366-core.c
> similarity index 100%
> rename from drivers/net/dsa/realtek/rtl8366.c
> rename to drivers/net/dsa/realtek/rtl8366-core.c
> diff --git a/drivers/net/dsa/realtek/rtl8366rb.c b/drivers/net/dsa/realtek/rtl8366rb.c
> index b1635c20276b..31f1a949c8e7 100644
> --- a/drivers/net/dsa/realtek/rtl8366rb.c
> +++ b/drivers/net/dsa/realtek/rtl8366rb.c
> @@ -1812,3 +1812,5 @@ const struct realtek_variant rtl8366rb_variant = {
> .chip_data_sz = sizeof(struct rtl8366rb),
> };
> EXPORT_SYMBOL_GPL(rtl8366rb_variant);
> +
> +MODULE_LICENSE("GPL");
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