[PATCH net 6/7] net: dsa: mt7530: call port 6 setup from mt7530_mac_config()

[arinc9.unal at gmail.com]

From: Arınç ÜNAL <arinc.unal at arinc9.com>

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 call 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()

Fixes: b8f126a8d543 ("net-next: dsa: add dsa support for Mediatek MT7530 switch")
Tested-by: Arınç ÜNAL <arinc.unal at arinc9.com>
Signed-off-by: Arınç ÜNAL <arinc.unal at arinc9.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 2397d63cec29..8d49803f7522 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -421,7 +421,7 @@ static void mt7530_pll_setup(struct mt7530_priv *priv)
 
 /* 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;
@@ -493,6 +493,12 @@ 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 bool mt7531_dual_sgmii_supported(struct mt7530_priv *priv)
 {
 	u32 val;
@@ -2523,12 +2529,15 @@ 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;
 }
-- 
2.37.2