linux-kernel - [PATCH net-next 09/15] net: dsa: mt7530: call port 6 setup from mt7530_mac

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Message-Id: <20231118123205.266819-10-arinc.unal@arinc9.com>
Date:   Sat, 18 Nov 2023 15:31:59 +0300
From:   Arınç ÜNAL <arinc.unal@...nc9.com>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>,
        Daniel Golle <daniel@...rotopia.org>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Russell King <linux@...linux.org.uk>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Frank Wunderlich <frank-w@...lic-files.de>,
        Bartel Eerdekens <bartel.eerdekens@...stell8.be>,
        mithat.guner@...ont.com, erkin.bozoglu@...ont.com
Subject: [PATCH net-next 09/15] net: dsa: mt7530: call port 6 setup from mt7530_mac_config()

mt7530_pad_clk_setup() is called if port 6 is enabled. It used to do more
things than setting up port 6. That part was moved to more appropriate
locations, mt7530_setup() and mt7530_pll_setup().

Now that all it does is set up port 6, rename it to mt7530_setup_port6(),
and move it to a more appropriate location, under mt7530_mac_config().

Leave an empty mt7530_pad_clk_setup() to satisfy the pad_setup function
pointer.

This is the code path for setting up the ports before:

mt753x_phylink_mac_config()
-> mt753x_mac_config()
   -> mt7530_mac_config()
      -> mt7530_setup_port5()
-> mt753x_pad_setup()
   -> mt7530_pad_clk_setup()

This is after:

mt753x_phylink_mac_config()
-> mt753x_mac_config()
   -> mt7530_mac_config()
      -> mt7530_setup_port5()
      -> mt7530_setup_port6()

Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
Reviewed-by: Vladimir Oltean <olteanv@...il.com>
---
 drivers/net/dsa/mt7530.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 7de55cbf19a4..ae037ff7d4c5 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -415,7 +415,7 @@ mt753x_preferred_default_local_cpu_port(struct dsa_switch *ds)
 
 /* Setup port 6 interface mode and TRGMII TX circuit */
 static int
-mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
+mt7530_setup_port6(struct dsa_switch *ds, phy_interface_t interface)
 {
 	struct mt7530_priv *priv = ds->priv;
 	u32 ncpo1, ssc_delta, trgint, xtal;
@@ -487,6 +487,12 @@ mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
 	return 0;
 }
 
+static int
+mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
+{
+	return 0;
+}
+
 static int
 mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface)
 {
@@ -2608,12 +2614,15 @@ mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
 		  phy_interface_t interface)
 {
 	struct mt7530_priv *priv = ds->priv;
+	int ret;
 
-	/* Only need to setup port5. */
-	if (port != 5)
-		return 0;
-
-	mt7530_setup_port5(priv->ds, interface);
+	if (port == 5) {
+		mt7530_setup_port5(priv->ds, interface);
+	} else if (port == 6) {
+		ret = mt7530_setup_port6(priv->ds, interface);
+		if (ret)
+			return ret;
+	}
 
 	return 0;
 }
-- 
2.40.1