linux-kernel - [RFC PATCH net-next v4 27/28] net: dsa: qca8k: pass switch_revision info to phy dev

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Message-Id: <20210508002920.19945-27-ansuelsmth@gmail.com>
Date:   Sat,  8 May 2021 02:29:17 +0200
From:   Ansuel Smith <ansuelsmth@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Ansuel Smith <ansuelsmth@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [RFC PATCH net-next v4 27/28] net: dsa: qca8k: pass switch_revision info to phy dev_flags

Define get_phy_flags to pass switch_Revision needed to tweak the
internal PHY with debug values based on the revision.

Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>
---
 drivers/net/dsa/qca8k.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
index 3c3e05735b2d..8dafa581b7fa 100644
--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -1678,6 +1678,22 @@ qca8k_port_vlan_del(struct dsa_switch *ds, int port,
 	return ret;
 }
 
+static u32 qca8k_get_phy_flags(struct dsa_switch *ds, int port)
+{
+	struct qca8k_priv *priv = ds->priv;
+
+	/* Communicate to the phy internal driver the switch revision.
+	 * Based on the switch revision different values needs to be
+	 * set to the dbg and mmd reg on the phy.
+	 * The first 2 bit are used to communicate the switch revision
+	 * to the phy driver.
+	 */
+	if (port > 0 && port < 6)
+		return priv->switch_revision;
+
+	return 0;
+}
+
 static enum dsa_tag_protocol
 qca8k_get_tag_protocol(struct dsa_switch *ds, int port,
 		       enum dsa_tag_protocol mp)
@@ -1741,6 +1757,7 @@ static const struct dsa_switch_ops qca8k_switch_ops = {
 	.phylink_mac_config	= qca8k_phylink_mac_config,
 	.phylink_mac_link_down	= qca8k_phylink_mac_link_down,
 	.phylink_mac_link_up	= qca8k_phylink_mac_link_up,
+	.get_phy_flags		= qca8k_get_phy_flags,
 };
 
 static int qca8k_read_switch_id(struct qca8k_priv *priv)
-- 
2.30.2