netdev - [PATCH 01/11] net: phy: Add rockchip phy driver support

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Message-Id: <1498192929-7519-2-git-send-email-david.wu@rock-chips.com>
Date:   Fri, 23 Jun 2017 12:41:59 +0800
From:   David Wu <david.wu@...k-chips.com>
To:     davem@...emloft.net, heiko@...ech.de, robh+dt@...nel.org,
        mark.rutland@....com, catalin.marinas@....com, will.deacon@....com,
        olof@...om.net, linux@...linux.org.uk, arnd@...db.de
Cc:     andrew@...n.ch, f.fainelli@...il.com, peppe.cavallaro@...com,
        alexandre.torgue@...com, huangtao@...k-chips.com,
        hwg@...k-chips.com, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, David Wu <david.wu@...k-chips.com>
Subject: [PATCH 01/11] net: phy: Add rockchip phy driver support

Support internal ephy currently.

Signed-off-by: David Wu <david.wu@...k-chips.com>
---
 drivers/net/phy/Kconfig    |  4 ++
 drivers/net/phy/Makefile   |  1 +
 drivers/net/phy/rockchip.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 99 insertions(+)
 create mode 100644 drivers/net/phy/rockchip.c

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index c360dd6..86010d4 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -350,6 +350,10 @@ config XILINX_GMII2RGMII
          the Reduced Gigabit Media Independent Interface(RGMII) between
          Ethernet physical media devices and the Gigabit Ethernet controller.
 
+config ROCKCHIP_MAC_PHY
+	tristate "Drivers for ROCKCHIP MAC PHY"
+	---help---
+	  Currently supports the mac internal ephy.
 endif # PHYLIB
 
 config MICREL_KS8995MA
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index e36db9a..6d96779 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -69,3 +69,4 @@ obj-$(CONFIG_STE10XP)		+= ste10Xp.o
 obj-$(CONFIG_TERANETICS_PHY)	+= teranetics.o
 obj-$(CONFIG_VITESSE_PHY)	+= vitesse.o
 obj-$(CONFIG_XILINX_GMII2RGMII) += xilinx_gmii2rgmii.o
+obj-$(CONFIG_ROCKCHIP_MAC_PHY)	+= rockchip.o
diff --git a/drivers/net/phy/rockchip.c b/drivers/net/phy/rockchip.c
new file mode 100644
index 0000000..69e96ec
--- /dev/null
+++ b/drivers/net/phy/rockchip.c
@@ -0,0 +1,94 @@
+/**
+ * Rockchip mac phy driver
+ *
+ * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * David Wu<david.wu@...k-chips.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+#include <linux/netdevice.h>
+
+static int internal_config_init(struct phy_device *phydev)
+{
+	int val;
+	u32 features;
+
+	/*enable auto mdix*/
+	phy_write(phydev, 0x11, 0x0080);
+
+	features = (SUPPORTED_TP | SUPPORTED_MII
+			| SUPPORTED_AUI | SUPPORTED_FIBRE |
+			SUPPORTED_BNC);
+
+	/* Do we support autonegotiation? */
+	val = phy_read(phydev, MII_BMSR);
+	if (val < 0)
+		return val;
+
+	if (val & BMSR_ANEGCAPABLE)
+		features |= SUPPORTED_Autoneg;
+
+	if (val & BMSR_100FULL)
+		features |= SUPPORTED_100baseT_Full;
+	if (val & BMSR_100HALF)
+		features |= SUPPORTED_100baseT_Half;
+	if (val & BMSR_10FULL)
+		features |= SUPPORTED_10baseT_Full;
+	if (val & BMSR_10HALF)
+		features |= SUPPORTED_10baseT_Half;
+
+	if (val & BMSR_ESTATEN) {
+		val = phy_read(phydev, MII_ESTATUS);
+		if (val < 0)
+			return val;
+
+		if (val & ESTATUS_1000_TFULL)
+			features |= SUPPORTED_1000baseT_Full;
+		if (val & ESTATUS_1000_THALF)
+			features |= SUPPORTED_1000baseT_Half;
+	}
+
+	phydev->supported = features;
+	phydev->advertising = features;
+
+	return 0;
+}
+
+static struct phy_driver rockchip_phy_driver[] = {
+{
+	.phy_id 	= 0x1234d400,
+	.phy_id_mask	= 0xffffffff,
+	.name		= "rockchip internal ephy",
+	.features	= 0,
+	.config_init	= internal_config_init,
+	.config_aneg	= genphy_config_aneg,
+	.read_status	= genphy_read_status,
+	.suspend	= genphy_suspend,
+	.resume 	= genphy_resume,
+},
+};
+
+module_phy_driver(rockchip_phy_driver);
+
+static struct mdio_device_id __maybe_unused rockchip_phy_tbl[] = {
+	{ 0x1234d400, 0xffffffff },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(mdio, rockchip_phy_tbl);
+
+MODULE_AUTHOR("David Wu<david.wu@...k-chips.com>");
+MODULE_DESCRIPTION("Rockchip mac phy driver");
+MODULE_LICENSE("GPL v2");
-- 
1.9.1