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From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Date: Tue, 30 Jan 2024 20:13:29 -0300
Subject: [PATCH net-next v5 10/11] net: dsa: realtek: use the same mii bus
 driver for both interfaces
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Message-Id: <20240130-realtek_reverse-v5-10-ecafd9283a07@gmail.com>
References: <20240130-realtek_reverse-v5-0-ecafd9283a07@gmail.com>
In-Reply-To: <20240130-realtek_reverse-v5-0-ecafd9283a07@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>, 
 =?utf-8?q?Alvin_=C5=A0ipraga?= <alsi@bang-olufsen.dk>, 
 Andrew Lunn <andrew@lunn.ch>, Florian Fainelli <f.fainelli@gmail.com>, 
 Vladimir Oltean <olteanv@gmail.com>, 
 "David S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, 
 Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>, 
 Russell King <linux@armlinux.org.uk>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, 
 Luiz Angelo Daros de Luca <luizluca@gmail.com>

The realtek-mdio will now use this driver instead of the generic DSA
driver ("dsa user smi"), which should not be used with OF[1].

With a single ds_ops for both interfaces, the ds_ops in realtek_priv is
no longer necessary. Now, the realtek_variant.ds_ops can be used
directly.

The realtek_priv.setup_interface() has been removed as we can directly
call the new common function.

[1] https://lkml.kernel.org/netdev/20220630200423.tieprdu5fpabflj7@bang-olufsen.dk/T/

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
---
 drivers/net/dsa/realtek/realtek-mdio.c |  1 -
 drivers/net/dsa/realtek/realtek-smi.c  |  2 --
 drivers/net/dsa/realtek/realtek.h      |  5 +---
 drivers/net/dsa/realtek/rtl8365mb.c    | 49 ++++----------------------------
 drivers/net/dsa/realtek/rtl8366rb.c    | 52 ++++------------------------------
 drivers/net/dsa/realtek/rtl83xx.c      |  2 +-
 6 files changed, 14 insertions(+), 97 deletions(-)

diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c
index 45d9ef43fe3d..1ae31575d096 100644
--- a/drivers/net/dsa/realtek/realtek-mdio.c
+++ b/drivers/net/dsa/realtek/realtek-mdio.c
@@ -131,7 +131,6 @@ int realtek_mdio_probe(struct mdio_device *mdiodev)
 	priv->bus = mdiodev->bus;
 	priv->mdio_addr = mdiodev->addr;
 	priv->write_reg_noack = realtek_mdio_write;
-	priv->ds_ops = priv->variant->ds_ops_mdio;
 
 	ret = rtl83xx_register_switch(priv);
 	if (ret)
diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c
index 4d35621b5583..c075770c6986 100644
--- a/drivers/net/dsa/realtek/realtek-smi.c
+++ b/drivers/net/dsa/realtek/realtek-smi.c
@@ -348,8 +348,6 @@ int realtek_smi_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->mdio);
 
 	priv->write_reg_noack = realtek_smi_write_reg_noack;
-	priv->setup_interface = rtl83xx_setup_user_mdio;
-	priv->ds_ops = priv->variant->ds_ops_smi;
 
 	ret = rtl83xx_register_switch(priv);
 	if (ret)
diff --git a/drivers/net/dsa/realtek/realtek.h b/drivers/net/dsa/realtek/realtek.h
index e9e28b189509..864bb9a88f14 100644
--- a/drivers/net/dsa/realtek/realtek.h
+++ b/drivers/net/dsa/realtek/realtek.h
@@ -62,7 +62,6 @@ struct realtek_priv {
 
 	spinlock_t		lock; /* Locks around command writes */
 	struct dsa_switch	*ds;
-	const struct dsa_switch_ops *ds_ops;
 	struct irq_domain	*irqdomain;
 	bool			leds_disabled;
 
@@ -73,7 +72,6 @@ struct realtek_priv {
 	struct rtl8366_mib_counter *mib_counters;
 
 	const struct realtek_ops *ops;
-	int			(*setup_interface)(struct dsa_switch *ds);
 	int			(*write_reg_noack)(void *ctx, u32 addr, u32 data);
 
 	int			vlan_enabled;
@@ -115,8 +113,7 @@ struct realtek_ops {
 };
 
 struct realtek_variant {
-	const struct dsa_switch_ops *ds_ops_smi;
-	const struct dsa_switch_ops *ds_ops_mdio;
+	const struct dsa_switch_ops *ds_ops;
 	const struct realtek_ops *ops;
 	unsigned int clk_delay;
 	u8 cmd_read;
diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c
index 60f826a5a00a..778a962727ab 100644
--- a/drivers/net/dsa/realtek/rtl8365mb.c
+++ b/drivers/net/dsa/realtek/rtl8365mb.c
@@ -828,17 +828,6 @@ static int rtl8365mb_phy_write(struct realtek_priv *priv, int phy, int regnum,
 	return 0;
 }
 
-static int rtl8365mb_dsa_phy_read(struct dsa_switch *ds, int phy, int regnum)
-{
-	return rtl8365mb_phy_read(ds->priv, phy, regnum);
-}
-
-static int rtl8365mb_dsa_phy_write(struct dsa_switch *ds, int phy, int regnum,
-				   u16 val)
-{
-	return rtl8365mb_phy_write(ds->priv, phy, regnum, val);
-}
-
 static const struct rtl8365mb_extint *
 rtl8365mb_get_port_extint(struct realtek_priv *priv, int port)
 {
@@ -2017,12 +2006,10 @@ static int rtl8365mb_setup(struct dsa_switch *ds)
 	if (ret)
 		goto out_teardown_irq;
 
-	if (priv->setup_interface) {
-		ret = priv->setup_interface(ds);
-		if (ret) {
-			dev_err(priv->dev, "could not set up MDIO bus\n");
-			goto out_teardown_irq;
-		}
+	ret = rtl83xx_setup_user_mdio(ds);
+	if (ret) {
+		dev_err(priv->dev, "could not set up MDIO bus\n");
+		goto out_teardown_irq;
 	}
 
 	/* Start statistics counter polling */
@@ -2116,28 +2103,7 @@ static int rtl8365mb_detect(struct realtek_priv *priv)
 	return 0;
 }
 
-static const struct dsa_switch_ops rtl8365mb_switch_ops_smi = {
-	.get_tag_protocol = rtl8365mb_get_tag_protocol,
-	.change_tag_protocol = rtl8365mb_change_tag_protocol,
-	.setup = rtl8365mb_setup,
-	.teardown = rtl8365mb_teardown,
-	.phylink_get_caps = rtl8365mb_phylink_get_caps,
-	.phylink_mac_config = rtl8365mb_phylink_mac_config,
-	.phylink_mac_link_down = rtl8365mb_phylink_mac_link_down,
-	.phylink_mac_link_up = rtl8365mb_phylink_mac_link_up,
-	.port_stp_state_set = rtl8365mb_port_stp_state_set,
-	.get_strings = rtl8365mb_get_strings,
-	.get_ethtool_stats = rtl8365mb_get_ethtool_stats,
-	.get_sset_count = rtl8365mb_get_sset_count,
-	.get_eth_phy_stats = rtl8365mb_get_phy_stats,
-	.get_eth_mac_stats = rtl8365mb_get_mac_stats,
-	.get_eth_ctrl_stats = rtl8365mb_get_ctrl_stats,
-	.get_stats64 = rtl8365mb_get_stats64,
-	.port_change_mtu = rtl8365mb_port_change_mtu,
-	.port_max_mtu = rtl8365mb_port_max_mtu,
-};
-
-static const struct dsa_switch_ops rtl8365mb_switch_ops_mdio = {
+static const struct dsa_switch_ops rtl8365mb_switch_ops = {
 	.get_tag_protocol = rtl8365mb_get_tag_protocol,
 	.change_tag_protocol = rtl8365mb_change_tag_protocol,
 	.setup = rtl8365mb_setup,
@@ -2146,8 +2112,6 @@ static const struct dsa_switch_ops rtl8365mb_switch_ops_mdio = {
 	.phylink_mac_config = rtl8365mb_phylink_mac_config,
 	.phylink_mac_link_down = rtl8365mb_phylink_mac_link_down,
 	.phylink_mac_link_up = rtl8365mb_phylink_mac_link_up,
-	.phy_read = rtl8365mb_dsa_phy_read,
-	.phy_write = rtl8365mb_dsa_phy_write,
 	.port_stp_state_set = rtl8365mb_port_stp_state_set,
 	.get_strings = rtl8365mb_get_strings,
 	.get_ethtool_stats = rtl8365mb_get_ethtool_stats,
@@ -2167,8 +2131,7 @@ static const struct realtek_ops rtl8365mb_ops = {
 };
 
 const struct realtek_variant rtl8365mb_variant = {
-	.ds_ops_smi = &rtl8365mb_switch_ops_smi,
-	.ds_ops_mdio = &rtl8365mb_switch_ops_mdio,
+	.ds_ops = &rtl8365mb_switch_ops,
 	.ops = &rtl8365mb_ops,
 	.clk_delay = 10,
 	.cmd_read = 0xb9,
diff --git a/drivers/net/dsa/realtek/rtl8366rb.c b/drivers/net/dsa/realtek/rtl8366rb.c
index a0c365325b4a..54eff9cd0c03 100644
--- a/drivers/net/dsa/realtek/rtl8366rb.c
+++ b/drivers/net/dsa/realtek/rtl8366rb.c
@@ -1033,12 +1033,10 @@ static int rtl8366rb_setup(struct dsa_switch *ds)
 	if (ret)
 		dev_info(priv->dev, "no interrupt support\n");
 
-	if (priv->setup_interface) {
-		ret = priv->setup_interface(ds);
-		if (ret) {
-			dev_err(priv->dev, "could not set up MDIO bus\n");
-			return -ENODEV;
-		}
+	ret = rtl83xx_setup_user_mdio(ds);
+	if (ret) {
+		dev_err(priv->dev, "could not set up MDIO bus\n");
+		return -ENODEV;
 	}
 
 	return 0;
@@ -1785,17 +1783,6 @@ static int rtl8366rb_phy_write(struct realtek_priv *priv, int phy, int regnum,
 	return ret;
 }
 
-static int rtl8366rb_dsa_phy_read(struct dsa_switch *ds, int phy, int regnum)
-{
-	return rtl8366rb_phy_read(ds->priv, phy, regnum);
-}
-
-static int rtl8366rb_dsa_phy_write(struct dsa_switch *ds, int phy, int regnum,
-				   u16 val)
-{
-	return rtl8366rb_phy_write(ds->priv, phy, regnum, val);
-}
-
 static int rtl8366rb_reset_chip(struct realtek_priv *priv)
 {
 	int timeout = 10;
@@ -1861,35 +1848,9 @@ static int rtl8366rb_detect(struct realtek_priv *priv)
 	return 0;
 }
 
-static const struct dsa_switch_ops rtl8366rb_switch_ops_smi = {
-	.get_tag_protocol = rtl8366_get_tag_protocol,
-	.setup = rtl8366rb_setup,
-	.phylink_get_caps = rtl8366rb_phylink_get_caps,
-	.phylink_mac_link_up = rtl8366rb_mac_link_up,
-	.phylink_mac_link_down = rtl8366rb_mac_link_down,
-	.get_strings = rtl8366_get_strings,
-	.get_ethtool_stats = rtl8366_get_ethtool_stats,
-	.get_sset_count = rtl8366_get_sset_count,
-	.port_bridge_join = rtl8366rb_port_bridge_join,
-	.port_bridge_leave = rtl8366rb_port_bridge_leave,
-	.port_vlan_filtering = rtl8366rb_vlan_filtering,
-	.port_vlan_add = rtl8366_vlan_add,
-	.port_vlan_del = rtl8366_vlan_del,
-	.port_enable = rtl8366rb_port_enable,
-	.port_disable = rtl8366rb_port_disable,
-	.port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags,
-	.port_bridge_flags = rtl8366rb_port_bridge_flags,
-	.port_stp_state_set = rtl8366rb_port_stp_state_set,
-	.port_fast_age = rtl8366rb_port_fast_age,
-	.port_change_mtu = rtl8366rb_change_mtu,
-	.port_max_mtu = rtl8366rb_max_mtu,
-};
-
-static const struct dsa_switch_ops rtl8366rb_switch_ops_mdio = {
+static const struct dsa_switch_ops rtl8366rb_switch_ops = {
 	.get_tag_protocol = rtl8366_get_tag_protocol,
 	.setup = rtl8366rb_setup,
-	.phy_read = rtl8366rb_dsa_phy_read,
-	.phy_write = rtl8366rb_dsa_phy_write,
 	.phylink_get_caps = rtl8366rb_phylink_get_caps,
 	.phylink_mac_link_up = rtl8366rb_mac_link_up,
 	.phylink_mac_link_down = rtl8366rb_mac_link_down,
@@ -1928,8 +1889,7 @@ static const struct realtek_ops rtl8366rb_ops = {
 };
 
 const struct realtek_variant rtl8366rb_variant = {
-	.ds_ops_smi = &rtl8366rb_switch_ops_smi,
-	.ds_ops_mdio = &rtl8366rb_switch_ops_mdio,
+	.ds_ops = &rtl8366rb_switch_ops,
 	.ops = &rtl8366rb_ops,
 	.clk_delay = 10,
 	.cmd_read = 0xa9,
diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c
index f05fe6efe5a4..aa998e15c42b 100644
--- a/drivers/net/dsa/realtek/rtl83xx.c
+++ b/drivers/net/dsa/realtek/rtl83xx.c
@@ -232,7 +232,7 @@ int rtl83xx_register_switch(struct realtek_priv *priv)
 
 	priv->ds->priv = priv;
 	priv->ds->dev = priv->dev;
-	priv->ds->ops = priv->ds_ops;
+	priv->ds->ops = priv->variant->ds_ops;
 	priv->ds->num_ports = priv->num_ports;
 
 	ret = dsa_register_switch(priv->ds);

-- 
2.43.0