net: mscc: Move miim commands into separate file.

Move miim functions that can be shared in a different file inside
mscc_eswitch.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>

4 files changed, 88 insertions, 71 deletions

diff --git a/drivers/net/mscc_eswitch/Makefile b/drivers/net/mscc_eswitch/Makefile
index 32f411d..1ceb92a 100644
--- a/drivers/net/mscc_eswitch/Makefile
+++ b/drivers/net/mscc_eswitch/Makefile
@@ -1,2 +1,2 @@
 
-obj-$(CONFIG_MSCC_OCELOT_SWITCH) += ocelot_switch.o
+obj-$(CONFIG_MSCC_OCELOT_SWITCH) += ocelot_switch.o mscc_miim.o
diff --git a/drivers/net/mscc_eswitch/mscc_miim.c b/drivers/net/mscc_eswitch/mscc_miim.c
new file mode 100644
index 0000000..419dcc1
--- /dev/null
+++ b/drivers/net/mscc_eswitch/mscc_miim.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+#include <miiphy.h>
+#include <wait_bit.h>
+#include "mscc_miim.h"
+
+#define MIIM_STATUS			0x0
+#define		MIIM_STAT_BUSY			BIT(3)
+#define MIIM_CMD			0x8
+#define		MIIM_CMD_SCAN		BIT(0)
+#define		MIIM_CMD_OPR_WRITE	BIT(1)
+#define		MIIM_CMD_OPR_READ	BIT(2)
+#define		MIIM_CMD_SINGLE_SCAN	BIT(3)
+#define		MIIM_CMD_WRDATA(x)	((x) << 4)
+#define		MIIM_CMD_REGAD(x)	((x) << 20)
+#define		MIIM_CMD_PHYAD(x)	((x) << 25)
+#define		MIIM_CMD_VLD		BIT(31)
+#define MIIM_DATA			0xC
+#define		MIIM_DATA_ERROR		(0x2 << 16)
+
+static int mscc_miim_wait_ready(struct mscc_miim_dev *miim)
+{
+	return wait_for_bit_le32(miim->regs + MIIM_STATUS, MIIM_STAT_BUSY,
+				 false, 250, false);
+}
+
+int mscc_miim_read(struct mii_dev *bus, int addr, int devad, int reg)
+{
+	struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
+	u32 val;
+	int ret;
+
+	ret = mscc_miim_wait_ready(miim);
+	if (ret)
+		goto out;
+
+	writel(MIIM_CMD_VLD | MIIM_CMD_PHYAD(addr) |
+	       MIIM_CMD_REGAD(reg) | MIIM_CMD_OPR_READ,
+	       miim->regs + MIIM_CMD);
+
+	ret = mscc_miim_wait_ready(miim);
+	if (ret)
+		goto out;
+
+	val = readl(miim->regs + MIIM_DATA);
+	if (val & MIIM_DATA_ERROR) {
+		ret = -EIO;
+		goto out;
+	}
+
+	ret = val & 0xFFFF;
+ out:
+	return ret;
+}
+
+int mscc_miim_write(struct mii_dev *bus, int addr, int devad, int reg,
+		    u16 val)
+{
+	struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
+	int ret;
+
+	ret = mscc_miim_wait_ready(miim);
+	if (ret < 0)
+		goto out;
+
+	writel(MIIM_CMD_VLD | MIIM_CMD_PHYAD(addr) |
+	       MIIM_CMD_REGAD(reg) | MIIM_CMD_WRDATA(val) |
+	       MIIM_CMD_OPR_WRITE, miim->regs + MIIM_CMD);
+ out:
+	return ret;
+}
diff --git a/drivers/net/mscc_eswitch/mscc_miim.h b/drivers/net/mscc_eswitch/mscc_miim.h
new file mode 100644
index 0000000..0e5d5e3
--- /dev/null
+++ b/drivers/net/mscc_eswitch/mscc_miim.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+struct mscc_miim_dev {
+	void __iomem *regs;
+	void __iomem *phy_regs;
+};
+
+int mscc_miim_read(struct mii_dev *bus, int addr, int devad, int reg);
+int mscc_miim_write(struct mii_dev *bus, int addr, int devad, int reg, u16 val);
diff --git a/drivers/net/mscc_eswitch/ocelot_switch.c b/drivers/net/mscc_eswitch/ocelot_switch.c
index 9fed26c..a4361e8 100644
--- a/drivers/net/mscc_eswitch/ocelot_switch.c
+++ b/drivers/net/mscc_eswitch/ocelot_switch.c
@@ -15,19 +15,7 @@
 #include <net.h>
 #include <wait_bit.h>
 
-#define MIIM_STATUS			0x0
-#define		MIIM_STAT_BUSY			BIT(3)
-#define MIIM_CMD			0x8
-#define		MIIM_CMD_SCAN		BIT(0)
-#define		MIIM_CMD_OPR_WRITE	BIT(1)
-#define		MIIM_CMD_OPR_READ	BIT(2)
-#define		MIIM_CMD_SINGLE_SCAN	BIT(3)
-#define		MIIM_CMD_WRDATA(x)	((x) << 4)
-#define		MIIM_CMD_REGAD(x)	((x) << 20)
-#define		MIIM_CMD_PHYAD(x)	((x) << 25)
-#define		MIIM_CMD_VLD		BIT(31)
-#define MIIM_DATA			0xC
-#define		MIIM_DATA_ERROR		(0x2 << 16)
+#include "mscc_miim.h"
 
 #define PHY_CFG				0x0
 #define PHY_CFG_ENA				0xF
@@ -193,19 +181,8 @@ struct ocelot_private {
 	void *tx_adj_buf;
 };
 
-struct mscc_miim_dev {
-	void __iomem *regs;
-	void __iomem *phy_regs;
-};
-
 struct mscc_miim_dev miim[NUM_PHY];
 
-static int mscc_miim_wait_ready(struct mscc_miim_dev *miim)
-{
-	return wait_for_bit_le32(miim->regs + MIIM_STATUS, MIIM_STAT_BUSY,
-				 false, 250, false);
-}
-
 static int mscc_miim_reset(struct mii_dev *bus)
 {
 	struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
@@ -220,52 +197,6 @@ static int mscc_miim_reset(struct mii_dev *bus)
 	return 0;
 }
 
-static int mscc_miim_read(struct mii_dev *bus, int addr, int devad, int reg)
-{
-	struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
-	u32 val;
-	int ret;
-
-	ret = mscc_miim_wait_ready(miim);
-	if (ret)
-		goto out;
-
-	writel(MIIM_CMD_VLD | MIIM_CMD_PHYAD(addr) |
-	       MIIM_CMD_REGAD(reg) | MIIM_CMD_OPR_READ,
-	       miim->regs + MIIM_CMD);
-
-	ret = mscc_miim_wait_ready(miim);
-	if (ret)
-		goto out;
-
-	val = readl(miim->regs + MIIM_DATA);
-	if (val & MIIM_DATA_ERROR) {
-		ret = -EIO;
-		goto out;
-	}
-
-	ret = val & 0xFFFF;
- out:
-	return ret;
-}
-
-static int mscc_miim_write(struct mii_dev *bus, int addr, int devad, int reg,
-			   u16 val)
-{
-	struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
-	int ret;
-
-	ret = mscc_miim_wait_ready(miim);
-	if (ret < 0)
-		goto out;
-
-	writel(MIIM_CMD_VLD | MIIM_CMD_PHYAD(addr) |
-	       MIIM_CMD_REGAD(reg) | MIIM_CMD_WRDATA(val) |
-	       MIIM_CMD_OPR_WRITE, miim->regs + MIIM_CMD);
- out:
-	return ret;
-}
-
 /* For now only setup the internal mdio bus */
 static struct mii_dev *ocelot_mdiobus_init(struct udevice *dev)
 {