netdev - [PATCH v2 net-next 1/2] net: phy: micrel: add Microchip KSZ9131 inital driver

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Message-ID: <1538079402-6208-1-git-send-email-yuiko.oshino@microchip.com>
Date:   Thu, 27 Sep 2018 16:16:42 -0400
From:   Yuiko Oshino <yuiko.oshino@...rochip.com>
To:     <davem@...emloft.net>, <robh+dt@...nel.org>,
        <devicetree@...r.kernel.org>, <f.fainelli@...il.com>,
        <andrew@...n.ch>
CC:     <linux-kernel@...r.kernel.org>, <mark.rutland@....com>,
        <m.felsch@...gutronix.de>, <Markus.Niebel@....de>,
        <netdev@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>
Subject: [PATCH v2 net-next 1/2] net: phy: micrel: add Microchip KSZ9131 inital driver

Add support for Microchip Technology KSZ9131 10/100/1000 Ethernet PHY

Signed-off-by: Yuiko Oshino <yuiko.oshino@...rochip.com>
---
 drivers/net/phy/micrel.c   | 32 +++++++++++++++++++++++++++++---
 include/linux/micrel_phy.h |  1 +
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 3db06b4..a4473cb 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -14,7 +14,7 @@
  * option) any later version.
  *
  * Support : Micrel Phys:
- *		Giga phys: ksz9021, ksz9031
+ *		Giga phys: ksz9021, ksz9031, ksz9131
  *		100/10 Phys : ksz8001, ksz8721, ksz8737, ksz8041
  *			   ksz8021, ksz8031, ksz8051,
  *			   ksz8081, ksz8091,
@@ -425,6 +425,7 @@ static int ksz9021_config_init(struct phy_device *phydev)
 #define MII_KSZ9031RN_MMD_REGDATA_REG	0x0e
 #define OP_DATA				1
 #define KSZ9031_PS_TO_REG		60
+#define KSZ9131_PS_TO_REG		100
 
 /* Extended registers */
 /* MMD Address 0x0 */
@@ -470,6 +471,10 @@ static int ksz9031_of_load_skew_values(struct phy_device *phydev,
 	u16 maxval;
 	u16 newval;
 	int i;
+	int pstoreg = KSZ9031_PS_TO_REG;
+
+	if (phydev->drv->phy_id == PHY_ID_KSZ9131)
+		pstoreg = KSZ9131_PS_TO_REG;
 
 	for (i = 0; i < numfields; i++)
 		if (!of_property_read_u32(of_node, field[i], val + i))
@@ -489,7 +494,7 @@ static int ksz9031_of_load_skew_values(struct phy_device *phydev,
 			mask = 0xffff;
 			mask ^= maxval << (field_sz * i);
 			newval = (newval & mask) |
-				(((val[i] / KSZ9031_PS_TO_REG) & maxval)
+				(((val[i] / pstoreg) & maxval)
 					<< (field_sz * i));
 		}
 
@@ -602,7 +607,10 @@ static int ksz9031_config_init(struct phy_device *phydev)
 		}
 	}
 
-	return ksz9031_center_flp_timing(phydev);
+	if (phydev->drv->phy_id == PHY_ID_KSZ9031)
+		return ksz9031_center_flp_timing(phydev);
+	else
+		return 0;
 
 err_force_master:
 	phydev_err(phydev, "failed to force the phy to master mode\n");
@@ -975,6 +983,23 @@ static struct phy_driver ksphy_driver[] = {
 	.suspend	= genphy_suspend,
 	.resume		= kszphy_resume,
 }, {
+	.phy_id		= PHY_ID_KSZ9131,
+	.phy_id_mask	= MICREL_PHY_ID_MASK,
+	.name		= "Microchip KSZ9131 Gigabit PHY",
+	.features	= PHY_GBIT_FEATURES,
+	.flags		= PHY_HAS_INTERRUPT,
+	.driver_data	= &ksz9021_type,
+	.probe		= kszphy_probe,
+	.config_init	= ksz9031_config_init,
+	.read_status	= ksz9031_read_status,
+	.ack_interrupt	= kszphy_ack_interrupt,
+	.config_intr	= kszphy_config_intr,
+	.get_sset_count = kszphy_get_sset_count,
+	.get_strings	= kszphy_get_strings,
+	.get_stats	= kszphy_get_stats,
+	.suspend	= genphy_suspend,
+	.resume		= kszphy_resume,
+}, {
 	.phy_id		= PHY_ID_KSZ8873MLL,
 	.phy_id_mask	= MICREL_PHY_ID_MASK,
 	.name		= "Micrel KSZ8873MLL Switch",
@@ -1022,6 +1047,7 @@ MODULE_LICENSE("GPL");
 static struct mdio_device_id __maybe_unused micrel_tbl[] = {
 	{ PHY_ID_KSZ9021, 0x000ffffe },
 	{ PHY_ID_KSZ9031, MICREL_PHY_ID_MASK },
+	{ PHY_ID_KSZ9131, MICREL_PHY_ID_MASK },
 	{ PHY_ID_KSZ8001, 0x00fffffc },
 	{ PHY_ID_KS8737, MICREL_PHY_ID_MASK },
 	{ PHY_ID_KSZ8021, 0x00ffffff },
diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h
index 472fa4d..7361cd3 100644
--- a/include/linux/micrel_phy.h
+++ b/include/linux/micrel_phy.h
@@ -31,6 +31,7 @@
 #define PHY_ID_KSZ8081		0x00221560
 #define PHY_ID_KSZ8061		0x00221570
 #define PHY_ID_KSZ9031		0x00221620
+#define PHY_ID_KSZ9131		0x00221640
 
 #define PHY_ID_KSZ886X		0x00221430
 #define PHY_ID_KSZ8863		0x00221435
-- 
2.7.4