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Message-Id: <E1cpYZO-0006UU-P6@rmk-PC.armlinux.org.uk>
Date: Sun, 19 Mar 2017 11:00:18 +0000
From: Russell King <rmk+kernel@...linux.org.uk>
To: Florian Fainelli <f.fainelli@...il.com>
Cc: netdev@...r.kernel.org
Subject: [PATCH RFC 1/7] net: phy: move phy MMD accessors to phy-core.c
Move the phy_(read|write)__mmd() helpers out of line, they will become
our main MMD accessor functions, and so will be a little more complex.
This complexity doesn't belong in an inline function. Also move the
_indirect variants as well to keep like functionality together.
Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
---
drivers/net/phy/Makefile | 2 +-
drivers/net/phy/phy-core.c | 135 +++++++++++++++++++++++++++++++++++++++++++++
drivers/net/phy/phy.c | 85 ----------------------------
include/linux/phy.h | 20 +------
4 files changed, 138 insertions(+), 104 deletions(-)
create mode 100644 drivers/net/phy/phy-core.c
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 407b0b601ea8..82d915614646 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -1,7 +1,7 @@
# Makefile for Linux PHY drivers and MDIO bus drivers
libphy-y := phy.o phy_device.o mdio_bus.o mdio_device.o \
- mdio-boardinfo.o
+ mdio-boardinfo.o phy-core.o
libphy-$(CONFIG_SWPHY) += swphy.o
libphy-$(CONFIG_LED_TRIGGER_PHY) += phy_led_triggers.o
diff --git a/drivers/net/phy/phy-core.c b/drivers/net/phy/phy-core.c
new file mode 100644
index 000000000000..b8d8276a3099
--- /dev/null
+++ b/drivers/net/phy/phy-core.c
@@ -0,0 +1,135 @@
+/*
+ * Core PHY library, taken from phy.c
+ *
+ * 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/export.h>
+#include <linux/phy.h>
+
+static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad,
+ int addr)
+{
+ /* Write the desired MMD Devad */
+ bus->write(bus, addr, MII_MMD_CTRL, devad);
+
+ /* Write the desired MMD register address */
+ bus->write(bus, addr, MII_MMD_DATA, prtad);
+
+ /* Select the Function : DATA with no post increment */
+ bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
+}
+
+/**
+ * phy_read_mmd_indirect - reads data from the MMD registers
+ * @phydev: The PHY device bus
+ * @prtad: MMD Address
+ * @devad: MMD DEVAD
+ *
+ * Description: it reads data from the MMD registers (clause 22 to access to
+ * clause 45) of the specified phy address.
+ * To read these register we have:
+ * 1) Write reg 13 // DEVAD
+ * 2) Write reg 14 // MMD Address
+ * 3) Write reg 13 // MMD Data Command for MMD DEVAD
+ * 3) Read reg 14 // Read MMD data
+ */
+int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, int devad)
+{
+ struct phy_driver *phydrv = phydev->drv;
+ int addr = phydev->mdio.addr;
+ int value = -1;
+
+ if (!phydrv->read_mmd_indirect) {
+ struct mii_bus *bus = phydev->mdio.bus;
+
+ mutex_lock(&bus->mdio_lock);
+ mmd_phy_indirect(bus, prtad, devad, addr);
+
+ /* Read the content of the MMD's selected register */
+ value = bus->read(bus, addr, MII_MMD_DATA);
+ mutex_unlock(&bus->mdio_lock);
+ } else {
+ value = phydrv->read_mmd_indirect(phydev, prtad, devad, addr);
+ }
+ return value;
+}
+EXPORT_SYMBOL(phy_read_mmd_indirect);
+
+/**
+ * phy_read_mmd - Convenience function for reading a register
+ * from an MMD on a given PHY.
+ * @phydev: The phy_device struct
+ * @devad: The MMD to read from
+ * @regnum: The register on the MMD to read
+ *
+ * Same rules as for phy_read();
+ */
+int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum)
+{
+ if (!phydev->is_c45)
+ return -EOPNOTSUPP;
+
+ return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr,
+ MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff));
+}
+EXPORT_SYMBOL(phy_read_mmd);
+
+/**
+ * phy_write_mmd_indirect - writes data to the MMD registers
+ * @phydev: The PHY device
+ * @prtad: MMD Address
+ * @devad: MMD DEVAD
+ * @data: data to write in the MMD register
+ *
+ * Description: Write data from the MMD registers of the specified
+ * phy address.
+ * To write these register we have:
+ * 1) Write reg 13 // DEVAD
+ * 2) Write reg 14 // MMD Address
+ * 3) Write reg 13 // MMD Data Command for MMD DEVAD
+ * 3) Write reg 14 // Write MMD data
+ */
+void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
+ int devad, u32 data)
+{
+ struct phy_driver *phydrv = phydev->drv;
+ int addr = phydev->mdio.addr;
+
+ if (!phydrv->write_mmd_indirect) {
+ struct mii_bus *bus = phydev->mdio.bus;
+
+ mutex_lock(&bus->mdio_lock);
+ mmd_phy_indirect(bus, prtad, devad, addr);
+
+ /* Write the data into MMD's selected register */
+ bus->write(bus, addr, MII_MMD_DATA, data);
+ mutex_unlock(&bus->mdio_lock);
+ } else {
+ phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data);
+ }
+}
+EXPORT_SYMBOL(phy_write_mmd_indirect);
+
+/**
+ * phy_write_mmd - Convenience function for writing a register
+ * on an MMD on a given PHY.
+ * @phydev: The phy_device struct
+ * @devad: The MMD to read from
+ * @regnum: The register on the MMD to read
+ * @val: value to write to @regnum
+ *
+ * Same rules as for phy_write();
+ */
+int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val)
+{
+ if (!phydev->is_c45)
+ return -EOPNOTSUPP;
+
+ regnum = MII_ADDR_C45 | ((devad & 0x1f) << 16) | (regnum & 0xffff);
+
+ return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val);
+}
+EXPORT_SYMBOL(phy_write_mmd);
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 1be69d8bc909..ffc28c42e2d1 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -1192,91 +1192,6 @@ void phy_mac_interrupt(struct phy_device *phydev, int new_link)
}
EXPORT_SYMBOL(phy_mac_interrupt);
-static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad,
- int addr)
-{
- /* Write the desired MMD Devad */
- bus->write(bus, addr, MII_MMD_CTRL, devad);
-
- /* Write the desired MMD register address */
- bus->write(bus, addr, MII_MMD_DATA, prtad);
-
- /* Select the Function : DATA with no post increment */
- bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
-}
-
-/**
- * phy_read_mmd_indirect - reads data from the MMD registers
- * @phydev: The PHY device bus
- * @prtad: MMD Address
- * @devad: MMD DEVAD
- *
- * Description: it reads data from the MMD registers (clause 22 to access to
- * clause 45) of the specified phy address.
- * To read these register we have:
- * 1) Write reg 13 // DEVAD
- * 2) Write reg 14 // MMD Address
- * 3) Write reg 13 // MMD Data Command for MMD DEVAD
- * 3) Read reg 14 // Read MMD data
- */
-int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, int devad)
-{
- struct phy_driver *phydrv = phydev->drv;
- int addr = phydev->mdio.addr;
- int value = -1;
-
- if (!phydrv->read_mmd_indirect) {
- struct mii_bus *bus = phydev->mdio.bus;
-
- mutex_lock(&bus->mdio_lock);
- mmd_phy_indirect(bus, prtad, devad, addr);
-
- /* Read the content of the MMD's selected register */
- value = bus->read(bus, addr, MII_MMD_DATA);
- mutex_unlock(&bus->mdio_lock);
- } else {
- value = phydrv->read_mmd_indirect(phydev, prtad, devad, addr);
- }
- return value;
-}
-EXPORT_SYMBOL(phy_read_mmd_indirect);
-
-/**
- * phy_write_mmd_indirect - writes data to the MMD registers
- * @phydev: The PHY device
- * @prtad: MMD Address
- * @devad: MMD DEVAD
- * @data: data to write in the MMD register
- *
- * Description: Write data from the MMD registers of the specified
- * phy address.
- * To write these register we have:
- * 1) Write reg 13 // DEVAD
- * 2) Write reg 14 // MMD Address
- * 3) Write reg 13 // MMD Data Command for MMD DEVAD
- * 3) Write reg 14 // Write MMD data
- */
-void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
- int devad, u32 data)
-{
- struct phy_driver *phydrv = phydev->drv;
- int addr = phydev->mdio.addr;
-
- if (!phydrv->write_mmd_indirect) {
- struct mii_bus *bus = phydev->mdio.bus;
-
- mutex_lock(&bus->mdio_lock);
- mmd_phy_indirect(bus, prtad, devad, addr);
-
- /* Write the data into MMD's selected register */
- bus->write(bus, addr, MII_MMD_DATA, data);
- mutex_unlock(&bus->mdio_lock);
- } else {
- phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data);
- }
-}
-EXPORT_SYMBOL(phy_write_mmd_indirect);
-
/**
* phy_init_eee - init and check the EEE feature
* @phydev: target phy_device struct
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 772476028a65..2d32e9227516 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -651,14 +651,7 @@ struct phy_fixup {
*
* Same rules as for phy_read();
*/
-static inline int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum)
-{
- if (!phydev->is_c45)
- return -EOPNOTSUPP;
-
- return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr,
- MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff));
-}
+int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum);
/**
* phy_read_mmd_indirect - reads data from the MMD registers
@@ -752,16 +745,7 @@ static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev)
*
* Same rules as for phy_write();
*/
-static inline int phy_write_mmd(struct phy_device *phydev, int devad,
- u32 regnum, u16 val)
-{
- if (!phydev->is_c45)
- return -EOPNOTSUPP;
-
- regnum = MII_ADDR_C45 | ((devad & 0x1f) << 16) | (regnum & 0xffff);
-
- return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val);
-}
+int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
/**
* phy_write_mmd_indirect - writes data to the MMD registers
--
2.7.4
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