All of lore.kernel.org
 help / color / mirror / Atom feed
From: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
To: <netdev@vger.kernel.org>
Cc: <davem@davemloft.net>, <kuba@kernel.org>,
	<linux-kernel@vger.kernel.org>, <bryan.whitehead@microchip.com>,
	<hkallweit1@gmail.com>, <pabeni@redhat.com>,
	<edumazet@google.com>, <linux@armlinux.org.uk>,
	<UNGLinuxDriver@microchip.com>, <andrew@lunn.ch>,
	<Ian.Saturley@microchip.com>
Subject: [PATCH net-next 2/2] net: phy: micrel: Add PHY Auto/MDI/MDI-X set driver for KSZ9131
Date: Fri, 21 Oct 2022 11:26:42 +0530	[thread overview]
Message-ID: <20221021055642.255413-3-Raju.Lakkaraju@microchip.com> (raw)
In-Reply-To: <20221021055642.255413-1-Raju.Lakkaraju@microchip.com>

Add support for MDI-X status and configuration for KSZ9131 chips

Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
---
 drivers/net/phy/micrel.c | 77 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 54a17b576eac..40aa52d442f8 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -1295,6 +1295,81 @@ static int ksz9131_config_init(struct phy_device *phydev)
 	return 0;
 }
 
+#define MII_KSZPHY_AUTO_MDIX		0x1C
+#define MII_KSZPHY_AUTO_MDI_SET_	BIT(7)
+#define MII_KSZPHY_AUTO_MDIX_SWAP_OFF_	BIT(6)
+
+static int ksz9131_mdix_update(struct phy_device *phydev)
+{
+	int ret;
+
+	ret = phy_read(phydev, MII_KSZPHY_AUTO_MDIX);
+	if (ret < 0)
+		return ret;
+
+	if (ret & MII_KSZPHY_AUTO_MDIX_SWAP_OFF_) {
+		if (ret & MII_KSZPHY_AUTO_MDI_SET_)
+			phydev->mdix_ctrl = ETH_TP_MDI;
+		else
+			phydev->mdix_ctrl = ETH_TP_MDI_X;
+	} else {
+		phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
+	}
+
+	if (ret & MII_KSZPHY_AUTO_MDI_SET_)
+		phydev->mdix = ETH_TP_MDI;
+	else
+		phydev->mdix = ETH_TP_MDI_X;
+
+	return 0;
+}
+
+static int ksz9131_config_mdix(struct phy_device *phydev, u8 ctrl)
+{
+	u16 val;
+
+	switch (ctrl) {
+	case ETH_TP_MDI:
+		val = MII_KSZPHY_AUTO_MDIX_SWAP_OFF_ |
+		      MII_KSZPHY_AUTO_MDI_SET_;
+		break;
+	case ETH_TP_MDI_X:
+		val = MII_KSZPHY_AUTO_MDIX_SWAP_OFF_;
+		break;
+	case ETH_TP_MDI_AUTO:
+		val = 0;
+		break;
+	default:
+		return 0;
+	}
+
+	return phy_modify(phydev, MII_KSZPHY_AUTO_MDIX,
+			  MII_KSZPHY_AUTO_MDIX_SWAP_OFF_ |
+			  MII_KSZPHY_AUTO_MDI_SET_, val);
+}
+
+static int ksz9131_read_status(struct phy_device *phydev)
+{
+	int ret;
+
+	ret = ksz9131_mdix_update(phydev);
+	if (ret < 0)
+		return ret;
+
+	return genphy_read_status(phydev);
+}
+
+static int ksz9131_config_aneg(struct phy_device *phydev)
+{
+	int ret;
+
+	ret = genphy_config_aneg(phydev);
+	if (ret)
+		return ret;
+
+	return ksz9131_config_mdix(phydev, phydev->mdix_ctrl);
+}
+
 #define KSZ8873MLL_GLOBAL_CONTROL_4	0x06
 #define KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX	BIT(6)
 #define KSZ8873MLL_GLOBAL_CONTROL_4_SPEED	BIT(4)
@@ -3304,6 +3379,8 @@ static struct phy_driver ksphy_driver[] = {
 	.probe		= kszphy_probe,
 	.config_init	= ksz9131_config_init,
 	.config_intr	= kszphy_config_intr,
+	.config_aneg	= ksz9131_config_aneg,
+	.read_status	= ksz9131_read_status,
 	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
-- 
2.25.1


  parent reply	other threads:[~2022-10-21  5:57 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-21  5:56 [PATCH net-next 0/2] net: lan743x: PCI11010 / PCI11414 devices Enhancements Raju Lakkaraju
2022-10-21  5:56 ` [PATCH net-next 1/2] net: lan743x: Add support for get_pauseparam and set_pauseparam Raju Lakkaraju
2022-10-21 13:46   ` Andrew Lunn
2022-10-24  7:16     ` Raju Lakkaraju
2022-10-21  5:56 ` Raju Lakkaraju [this message]
2022-10-21  7:27   ` [PATCH net-next 2/2] net: phy: micrel: Add PHY Auto/MDI/MDI-X set driver for KSZ9131 Horatiu Vultur
2022-10-21 10:26     ` Raju Lakkaraju

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20221021055642.255413-3-Raju.Lakkaraju@microchip.com \
    --to=raju.lakkaraju@microchip.com \
    --cc=Ian.Saturley@microchip.com \
    --cc=UNGLinuxDriver@microchip.com \
    --cc=andrew@lunn.ch \
    --cc=bryan.whitehead@microchip.com \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=hkallweit1@gmail.com \
    --cc=kuba@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --cc=netdev@vger.kernel.org \
    --cc=pabeni@redhat.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.