Merge branch 'ns2-amac'

Jon Mason says:

====================
add NS2 support to bgmac

Changes in v6:
* Use a common bgmac_phy_connect_direct (per Rafal Milecki)
* Rebased on latest net-next
* Added Reviewed-by to the relevant patches

Changes in v5:
* Change a pr_err to netdev_err (per Scott Branden)
* Reword the lane swap binding documentation (per Andrew Lunn)

Changes in v4:
* Actually send out the lane swap binding doc patch (Per Scott Branden)
* Remove unused #define (Per Andrew Lunn)

Changes in v3:
* Clean-up the bgmac DT binding doc (per Rob Herring)
* Document the lane swap binding and make it generic (Per Andrew Lunn)

Changes in v2:
* Remove the PHY power-on (per Andrew Lunn)
* Misc PHY clean-ups regarding comments and #defines (per Andrew Lunn)
  This results on none of the original PHY code from Vikas being
  present.  So, I'm removing him as an author and giving him
  "Inspired-by" credit.
* Move PHY lane swapping to PHY driver (per Andrew Lunn and Florian
  Fainelli)
* Remove bgmac sleep (per Florian Fainelli)
* Re-add bgmac chip reset (per Florian Fainelli and Ray Jui)
* Rebased on latest net-next
* Added patch for bcm54xx_auxctl_read, which is used in the BCM54810
====================

Signed-off-by: David S. Miller <[email protected]>

Author: davem330

Documentation/devicetree/bindings/net/brcm,amac.txt

@@ -2,11 +2,17 @@ Broadcom AMAC Ethernet Controller Device Tree Bindings
 -------------------------------------------------------------
 
 Required properties:
- - compatible:	"brcm,amac" or "brcm,nsp-amac"
- - reg:		Address and length of the GMAC registers,
-		Address and length of the GMAC IDM registers
- - reg-names:	Names of the registers.  Must have both "amac_base" and
-		"idm_base"
+ - compatible:	"brcm,amac"
+		"brcm,nsp-amac"
+		"brcm,ns2-amac"
+ - reg:		Address and length of the register set for the device. It
+		contains the information of registers in the same order as
+		described by reg-names
+ - reg-names:	Names of the registers.
+		"amac_base":	Address and length of the GMAC registers
+		"idm_base":	Address and length of the GMAC IDM registers
+		"nicpm_base":	Address and length of the NIC Port Manager
+				registers (required for Northstar2)
  - interrupts:	Interrupt number
 
 Optional properties:

Documentation/devicetree/bindings/net/phy.txt

@@ -35,6 +35,10 @@ Optional Properties:
 - broken-turn-around: If set, indicates the PHY device does not correctly
   release the turn around line low at the end of a MDIO transaction.
 
+- enet-phy-lane-swap: If set, indicates the PHY will swap the TX/RX lanes to
+  compensate for the board being designed with the lanes swapped.
+
+
 Example:
 
 ethernet-phy@0 {

arch/arm64/boot/dts/broadcom/ns2-svk.dts

@@ -56,6 +56,10 @@
 	};
 };
 
+&enet {
+	status = "ok";
+};
+
 &pci_phy0 {
 	status = "ok";
 };
@@ -174,6 +178,7 @@
 &mdio_mux_iproc {
 	mdio@10 {
 		gphy0: eth-phy@10 {
+			enet-phy-lane-swap;
 			reg = <0x10>;
 		};
 	};

arch/arm64/boot/dts/broadcom/ns2.dtsi

@@ -191,6 +191,18 @@
 
 		#include "ns2-clock.dtsi"
 
+		enet: ethernet@61000000 {
+			compatible = "brcm,ns2-amac";
+			reg = <0x61000000 0x1000>,
+			      <0x61090000 0x1000>,
+			      <0x61030000 0x100>;
+			reg-names = "amac_base", "idm_base", "nicpm_base";
+			interrupts = <GIC_SPI 341 IRQ_TYPE_LEVEL_HIGH>;
+			phy-handle = <&gphy0>;
+			phy-mode = "rgmii";
+			status = "disabled";
+		};
+
 		dma0: dma@61360000 {
 			compatible = "arm,pl330", "arm,primecell";
 			reg = <0x61360000 0x1000>;

drivers/net/ethernet/broadcom/bgmac-bcma.c

@@ -80,6 +80,24 @@ static void bcma_bgmac_cmn_maskset32(struct bgmac *bgmac, u16 offset, u32 mask,
 	bcma_maskset32(bgmac->bcma.cmn, offset, mask, set);
 }
 
+static int bcma_phy_connect(struct bgmac *bgmac)
+{
+	struct phy_device *phy_dev;
+	char bus_id[MII_BUS_ID_SIZE + 3];
+
+	/* Connect to the PHY */
+	snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id,
+		 bgmac->phyaddr);
+	phy_dev = phy_connect(bgmac->net_dev, bus_id, bgmac_adjust_link,
+			      PHY_INTERFACE_MODE_MII);
+	if (IS_ERR(phy_dev)) {
+		dev_err(bgmac->dev, "PHY connection failed\n");
+		return PTR_ERR(phy_dev);
+	}
+
+	return 0;
+}
+
 static const struct bcma_device_id bgmac_bcma_tbl[] = {
 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT,
 		  BCMA_ANY_REV, BCMA_ANY_CLASS),
@@ -275,6 +293,10 @@ static int bgmac_probe(struct bcma_device *core)
 	bgmac->cco_ctl_maskset = bcma_bgmac_cco_ctl_maskset;
 	bgmac->get_bus_clock = bcma_bgmac_get_bus_clock;
 	bgmac->cmn_maskset32 = bcma_bgmac_cmn_maskset32;
+	if (bgmac->mii_bus)
+		bgmac->phy_connect = bcma_phy_connect;
+	else
+		bgmac->phy_connect = bgmac_phy_connect_direct;
 
 	err = bgmac_enet_probe(bgmac);
 	if (err)

drivers/net/ethernet/broadcom/bgmac-platform.c

@@ -14,11 +14,21 @@
 #define pr_fmt(fmt)		KBUILD_MODNAME ": " fmt
 
 #include <linux/bcma/bcma.h>
+#include <linux/brcmphy.h>
 #include <linux/etherdevice.h>
 #include <linux/of_address.h>
+#include <linux/of_mdio.h>
 #include <linux/of_net.h>
 #include "bgmac.h"
 
+#define NICPM_IOMUX_CTRL		0x00000008
+
+#define NICPM_IOMUX_CTRL_INIT_VAL	0x3196e000
+#define NICPM_IOMUX_CTRL_SPD_SHIFT	10
+#define NICPM_IOMUX_CTRL_SPD_10M	0
+#define NICPM_IOMUX_CTRL_SPD_100M	1
+#define NICPM_IOMUX_CTRL_SPD_1000M	2
+
 static u32 platform_bgmac_read(struct bgmac *bgmac, u16 offset)
 {
 	return readl(bgmac->plat.base + offset);
@@ -86,6 +96,54 @@ static void platform_bgmac_cmn_maskset32(struct bgmac *bgmac, u16 offset,
 	WARN_ON(1);
 }
 
+static void bgmac_nicpm_speed_set(struct net_device *net_dev)
+{
+	struct bgmac *bgmac = netdev_priv(net_dev);
+	u32 val;
+
+	if (!bgmac->plat.nicpm_base)
+		return;
+
+	val = NICPM_IOMUX_CTRL_INIT_VAL;
+	switch (bgmac->net_dev->phydev->speed) {
+	default:
+		netdev_err(net_dev, "Unsupported speed. Defaulting to 1000Mb\n");
+	case SPEED_1000:
+		val |= NICPM_IOMUX_CTRL_SPD_1000M << NICPM_IOMUX_CTRL_SPD_SHIFT;
+		break;
+	case SPEED_100:
+		val |= NICPM_IOMUX_CTRL_SPD_100M << NICPM_IOMUX_CTRL_SPD_SHIFT;
+		break;
+	case SPEED_10:
+		val |= NICPM_IOMUX_CTRL_SPD_10M << NICPM_IOMUX_CTRL_SPD_SHIFT;
+		break;
+	}
+
+	writel(val, bgmac->plat.nicpm_base + NICPM_IOMUX_CTRL);
+
+	bgmac_adjust_link(bgmac->net_dev);
+}
+
+static int platform_phy_connect(struct bgmac *bgmac)
+{
+	struct phy_device *phy_dev;
+
+	if (bgmac->plat.nicpm_base)
+		phy_dev = of_phy_get_and_connect(bgmac->net_dev,
+						 bgmac->dev->of_node,
+						 bgmac_nicpm_speed_set);
+	else
+		phy_dev = of_phy_get_and_connect(bgmac->net_dev,
+						 bgmac->dev->of_node,
+						 bgmac_adjust_link);
+	if (!phy_dev) {
+		dev_err(bgmac->dev, "PHY connection failed\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
 static int bgmac_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
@@ -102,7 +160,6 @@ static int bgmac_probe(struct platform_device *pdev)
 	/* Set the features of the 4707 family */
 	bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
 	bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
-	bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;
 	bgmac->feature_flags |= BGMAC_FEAT_CMDCFG_SR_REV4;
 	bgmac->feature_flags |= BGMAC_FEAT_TX_MASK_SETUP;
 	bgmac->feature_flags |= BGMAC_FEAT_RX_MASK_SETUP;
@@ -142,6 +199,14 @@ static int bgmac_probe(struct platform_device *pdev)
 	if (IS_ERR(bgmac->plat.idm_base))
 		return PTR_ERR(bgmac->plat.idm_base);
 
+	regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nicpm_base");
+	if (regs) {
+		bgmac->plat.nicpm_base = devm_ioremap_resource(&pdev->dev,
+							       regs);
+		if (IS_ERR(bgmac->plat.nicpm_base))
+			return PTR_ERR(bgmac->plat.nicpm_base);
+	}
+
 	bgmac->read = platform_bgmac_read;
 	bgmac->write = platform_bgmac_write;
 	bgmac->idm_read = platform_bgmac_idm_read;
@@ -151,6 +216,12 @@ static int bgmac_probe(struct platform_device *pdev)
 	bgmac->cco_ctl_maskset = platform_bgmac_cco_ctl_maskset;
 	bgmac->get_bus_clock = platform_bgmac_get_bus_clock;
 	bgmac->cmn_maskset32 = platform_bgmac_cmn_maskset32;
+	if (of_parse_phandle(np, "phy-handle", 0)) {
+		bgmac->phy_connect = platform_phy_connect;
+	} else {
+		bgmac->phy_connect = bgmac_phy_connect_direct;
+		bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;
+	}
 
 	return bgmac_enet_probe(bgmac);
 }
@@ -167,6 +238,7 @@ static int bgmac_remove(struct platform_device *pdev)
 static const struct of_device_id bgmac_of_enet_match[] = {
 	{.compatible = "brcm,amac",},
 	{.compatible = "brcm,nsp-amac",},
+	{.compatible = "brcm,ns2-amac",},
 	{},
 };
 

drivers/net/ethernet/broadcom/bgmac.c

@@ -1082,6 +1082,9 @@ static void bgmac_enable(struct bgmac *bgmac)
 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */
 static void bgmac_chip_init(struct bgmac *bgmac)
 {
+	/* Clear any erroneously pending interrupts */
+	bgmac_write(bgmac, BGMAC_INT_STATUS, ~0);
+
 	/* 1 interrupt per received frame */
 	bgmac_write(bgmac, BGMAC_INT_RECV_LAZY, 1 << BGMAC_IRL_FC_SHIFT);
 
@@ -1388,7 +1391,7 @@ static const struct ethtool_ops bgmac_ethtool_ops = {
  * MII
  **************************************************/
 
-static void bgmac_adjust_link(struct net_device *net_dev)
+void bgmac_adjust_link(struct net_device *net_dev)
 {
 	struct bgmac *bgmac = netdev_priv(net_dev);
 	struct phy_device *phy_dev = net_dev->phydev;
@@ -1411,8 +1414,9 @@ static void bgmac_adjust_link(struct net_device *net_dev)
 		phy_print_status(phy_dev);
 	}
 }
+EXPORT_SYMBOL_GPL(bgmac_adjust_link);
 
-static int bgmac_phy_connect_direct(struct bgmac *bgmac)
+int bgmac_phy_connect_direct(struct bgmac *bgmac)
 {
 	struct fixed_phy_status fphy_status = {
 		.link = 1,
@@ -1437,24 +1441,7 @@ static int bgmac_phy_connect_direct(struct bgmac *bgmac)
 
 	return err;
 }
-
-static int bgmac_phy_connect(struct bgmac *bgmac)
-{
-	struct phy_device *phy_dev;
-	char bus_id[MII_BUS_ID_SIZE + 3];
-
-	/* Connect to the PHY */
-	snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id,
-		 bgmac->phyaddr);
-	phy_dev = phy_connect(bgmac->net_dev, bus_id, &bgmac_adjust_link,
-			      PHY_INTERFACE_MODE_MII);
-	if (IS_ERR(phy_dev)) {
-		dev_err(bgmac->dev, "PHY connection failed\n");
-		return PTR_ERR(phy_dev);
-	}
-
-	return 0;
-}
+EXPORT_SYMBOL_GPL(bgmac_phy_connect_direct);
 
 int bgmac_enet_probe(struct bgmac *info)
 {
@@ -1507,10 +1494,7 @@ int bgmac_enet_probe(struct bgmac *info)
 
 	netif_napi_add(net_dev, &bgmac->napi, bgmac_poll, BGMAC_WEIGHT);
 
-	if (!bgmac->mii_bus)
-		err = bgmac_phy_connect_direct(bgmac);
-	else
-		err = bgmac_phy_connect(bgmac);
+	err = bgmac_phy_connect(bgmac);
 	if (err) {
 		dev_err(bgmac->dev, "Cannot connect to phy\n");
 		goto err_dma_free;

drivers/net/ethernet/broadcom/bgmac.h

@@ -463,6 +463,7 @@ struct bgmac {
 		struct {
 			void *base;
 			void *idm_base;
+			void *nicpm_base;
 		} plat;
 		struct {
 			struct bcma_device *core;
@@ -513,10 +514,13 @@ struct bgmac {
 	u32 (*get_bus_clock)(struct bgmac *bgmac);
 	void (*cmn_maskset32)(struct bgmac *bgmac, u16 offset, u32 mask,
 			      u32 set);
+	int (*phy_connect)(struct bgmac *bgmac);
 };
 
 int bgmac_enet_probe(struct bgmac *info);
 void bgmac_enet_remove(struct bgmac *bgmac);
+void bgmac_adjust_link(struct net_device *net_dev);
+int bgmac_phy_connect_direct(struct bgmac *bgmac);
 
 struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr);
 void bcma_mdio_mii_unregister(struct mii_bus *mii_bus);
@@ -583,4 +587,9 @@ static inline void bgmac_set(struct bgmac *bgmac, u16 offset, u32 set)
 {
 	bgmac_maskset(bgmac, offset, ~0, set);
 }
+
+static inline int bgmac_phy_connect(struct bgmac *bgmac)
+{
+	return bgmac->phy_connect(bgmac);
+}
 #endif /* _BGMAC_H */

drivers/net/phy/Kconfig

@@ -217,7 +217,7 @@ config BROADCOM_PHY
 	select BCM_NET_PHYLIB
 	---help---
 	  Currently supports the BCM5411, BCM5421, BCM5461, BCM54616S, BCM5464,
-	  BCM5481 and BCM5482 PHYs.
+	  BCM5481, BCM54810 and BCM5482 PHYs.
 
 config CICADA_PHY
 	tristate "Cicada PHYs"