netdev - [PATCH 6/7] net: dsa: ar8xxx: add support for second xMII interfaces through DT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1432863742-18427-7-git-send-email-mathieu@codeaurora.org>
Date:	Thu, 28 May 2015 18:42:21 -0700
From:	Mathieu Olivari <mathieu@...eaurora.org>
To:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	davem@...emloft.net, mathieu@...eaurora.org, andrew@...n.ch,
	f.fainelli@...il.com, linux@...ck-us.net, gang.chen.5i5j@...il.com,
	jiri@...nulli.us, leitec@...ticky.com, fabf@...net.be,
	alexander.h.duyck@...el.com, pavel.nakonechny@...tlab.ru,
	joe@...ches.com, sfeldma@...il.com, nbd@...nwrt.org,
	juhosg@...nwrt.org
Cc:	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH 6/7] net: dsa: ar8xxx: add support for second xMII interfaces through DT

This patch is adding support for port6 specific options to device tree.
They can be used to setup the second xMII interface, and connect it to
one of the switch port.

Signed-off-by: Mathieu Olivari <mathieu@...eaurora.org>
---
 drivers/net/dsa/ar8xxx.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/drivers/net/dsa/ar8xxx.c b/drivers/net/dsa/ar8xxx.c
index 4044614..7559249 100644
--- a/drivers/net/dsa/ar8xxx.c
+++ b/drivers/net/dsa/ar8xxx.c
@@ -19,6 +19,7 @@
 #include <net/dsa.h>
 #include <linux/phy.h>
 #include <linux/of_net.h>
+#include <linux/of_platform.h>
 
 #include "ar8xxx.h"
 
@@ -260,6 +261,9 @@ static int ar8xxx_set_pad_ctrl(struct dsa_switch *ds, int port, int mode)
 		ar8xxx_write(ds, AR8327_REG_PORT5_PAD_CTRL,
 			     AR8327_PORT_PAD_RGMII_RX_DELAY_EN);
 		break;
+	case PHY_INTERFACE_MODE_SGMII:
+		ar8xxx_write(ds, reg, AR8327_PORT_PAD_SGMII_EN);
+		break;
 	default:
 		pr_err("xMII mode %d not supported\n", mode);
 		return -EINVAL;
@@ -268,6 +272,48 @@ static int ar8xxx_set_pad_ctrl(struct dsa_switch *ds, int port, int mode)
 	return 0;
 }
 
+static int ar8xxx_of_setup(struct dsa_switch *ds)
+{
+	struct device_node *dn = ds->pd->of_node;
+	const char *s_phymode;
+	int ret, mode;
+	u32 phy_id, ctrl;
+
+	/* If port6-phy-mode property exists, configure it accordingly */
+	if (!of_property_read_string(dn, "qca,port6-phy-mode", &s_phymode)) {
+		for (mode = 0; mode < PHY_INTERFACE_MODE_MAX; mode++)
+			if (!strcasecmp(s_phymode, phy_modes(mode)))
+				break;
+
+		if (mode == PHY_INTERFACE_MODE_MAX)
+			pr_err("Unknown phy-mode: \"%s\"\n", s_phymode);
+
+		ret = ar8xxx_set_pad_ctrl(ds, 6, mode);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* If a phy ID is specified for PORT6 mac, connect them together */
+	if (!of_property_read_u32(dn, "qca,port6-phy-id", &phy_id)) {
+		ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(6),
+			   AR8327_PORT_LOOKUP_MEMBER, BIT(phy_to_port(phy_id)));
+		ar8xxx_rmw(ds, AR8327_PORT_LOOKUP_CTRL(phy_to_port(phy_id)),
+			   AR8327_PORT_LOOKUP_MEMBER, BIT(6));
+
+		/* We want the switch to be pass-through and act like a PHY on
+		 * these ports. So BC/MC/UC & IGMP frames need to be accepted
+		 */
+		ctrl = BIT(phy_to_port(phy_id)) | BIT(6);
+		ar8xxx_reg_set(ds, AR8327_REG_GLOBAL_FW_CTRL1,
+			       ctrl << AR8327_GLOBAL_FW_CTRL1_IGMP_DP_S |
+			       ctrl << AR8327_GLOBAL_FW_CTRL1_BC_DP_S |
+			       ctrl << AR8327_GLOBAL_FW_CTRL1_MC_DP_S |
+			       ctrl << AR8327_GLOBAL_FW_CTRL1_UC_DP_S);
+	}
+
+	return 0;
+}
+
 static int ar8xxx_setup(struct dsa_switch *ds)
 {
 	struct ar8xxx_priv *priv = ds_to_priv(ds);
@@ -341,6 +387,10 @@ static int ar8xxx_setup(struct dsa_switch *ds)
 		}
 	}
 
+	ret = ar8xxx_of_setup(ds);
+	if (ret < 0)
+		return ret;
+
 	return 0;
 }
 
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html