[U-Boot] [PATCH v5 2/5] net: fec_mxc: add PHYLIB support
Troy Kisky
troy.kisky at boundarydevices.com
Wed Feb 8 01:08:47 CET 2012
Surround non PHYLIB routines miiphy_restart_aneg
and miiphy_wait_aneg with ifndef CONFIG_PHYLIB.
When later PHYLIB is required it is easy to delete
the non-PHYLIB code. This separation idea
came from Andy Fleming.
fec_miiphy_read, and fec_miiphy_write changed to
fec_phy_read, and fec_phy_write with argument changes.
Deprecated miiphy_register is no longer used. Both
old and new PHYLIB code now use mdio_register.
Cleanup some debug prints.
Inline function fec_miiphy_fec_to_eth is no longer necessary.
Moved to the single call location.
Signed-off-by: Troy Kisky <troy.kisky at boundarydevices.com>
---
drivers/net/fec_mxc.c | 144 ++++++++++++++++++++++++++++++++----------------
drivers/net/fec_mxc.h | 5 ++
2 files changed, 101 insertions(+), 48 deletions(-)
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index db8ebfa..1fdd071 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -70,34 +70,15 @@ static void swap_packet(uint32_t *packet, int length)
#endif
/*
- * The i.MX28 has two ethernet interfaces, but they are not equal.
- * Only the first one can access the MDIO bus.
- */
-#ifdef CONFIG_MX28
-static inline struct ethernet_regs *fec_miiphy_fec_to_eth(struct fec_priv *fec)
-{
- return (struct ethernet_regs *)MXS_ENET0_BASE;
-}
-#else
-static inline struct ethernet_regs *fec_miiphy_fec_to_eth(struct fec_priv *fec)
-{
- return fec->eth;
-}
-#endif
-
-/*
* MII-interface related functions
*/
-static int fec_miiphy_read(const char *dev, uint8_t phyAddr, uint8_t regAddr,
- uint16_t *retVal)
+static int fec_mdio_read(struct ethernet_regs *eth, uint8_t phyAddr,
+ uint8_t regAddr)
{
- struct eth_device *edev = eth_get_dev_by_name(dev);
- struct fec_priv *fec = (struct fec_priv *)edev->priv;
- struct ethernet_regs *eth = fec_miiphy_fec_to_eth(fec);
-
uint32_t reg; /* convenient holder for the PHY register */
uint32_t phy; /* convenient holder for the PHY */
uint32_t start;
+ int val;
/*
* reading from any PHY's register is done by properly
@@ -129,10 +110,10 @@ static int fec_miiphy_read(const char *dev, uint8_t phyAddr, uint8_t regAddr,
/*
* it's now safe to read the PHY's register
*/
- *retVal = readl(ð->mii_data);
- debug("fec_miiphy_read: phy: %02x reg:%02x val:%#x\n", phyAddr,
- regAddr, *retVal);
- return 0;
+ val = (unsigned short)readl(ð->mii_data);
+ debug("%s: phy: %02x reg:%02x val:%#x\n", __func__, phyAddr,
+ regAddr, val);
+ return val;
}
static void fec_mii_setspeed(struct fec_priv *fec)
@@ -143,16 +124,12 @@ static void fec_mii_setspeed(struct fec_priv *fec)
*/
writel((((imx_get_fecclk() / 1000000) + 2) / 5) << 1,
&fec->eth->mii_speed);
- debug("fec_init: mii_speed %08x\n",
- readl(&fec->eth->mii_speed));
+ debug("%s: mii_speed %08x\n", __func__, readl(&fec->eth->mii_speed));
}
-static int fec_miiphy_write(const char *dev, uint8_t phyAddr, uint8_t regAddr,
- uint16_t data)
-{
- struct eth_device *edev = eth_get_dev_by_name(dev);
- struct fec_priv *fec = (struct fec_priv *)edev->priv;
- struct ethernet_regs *eth = fec_miiphy_fec_to_eth(fec);
+static int fec_mdio_write(struct ethernet_regs *eth, uint8_t phyAddr,
+ uint8_t regAddr, uint16_t data)
+{
uint32_t reg; /* convenient holder for the PHY register */
uint32_t phy; /* convenient holder for the PHY */
uint32_t start;
@@ -178,15 +155,28 @@ static int fec_miiphy_write(const char *dev, uint8_t phyAddr, uint8_t regAddr,
* clear MII interrupt bit
*/
writel(FEC_IEVENT_MII, ð->ievent);
- debug("fec_miiphy_write: phy: %02x reg:%02x val:%#x\n", phyAddr,
+ debug("%s: phy: %02x reg:%02x val:%#x\n", __func__, phyAddr,
regAddr, data);
return 0;
}
+int fec_phy_read(struct mii_dev *bus, int phyAddr, int dev_addr, int regAddr)
+{
+ return fec_mdio_read(bus->priv, phyAddr, regAddr);
+}
+
+int fec_phy_write(struct mii_dev *bus, int phyAddr, int dev_addr, int regAddr,
+ u16 data)
+{
+ return fec_mdio_write(bus->priv, phyAddr, regAddr, data);
+}
+
+#ifndef CONFIG_PHYLIB
static int miiphy_restart_aneg(struct eth_device *dev)
{
struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ struct ethernet_regs *eth = fec->bus->priv;
int ret = 0;
/*
@@ -194,19 +184,18 @@ static int miiphy_restart_aneg(struct eth_device *dev)
* Reset PHY, then delay 300ns
*/
#ifdef CONFIG_MX27
- miiphy_write(dev->name, fec->phy_id, MII_DCOUNTER, 0x00FF);
+ fec_mdio_write(eth, fec->phy_id, MII_DCOUNTER, 0x00FF);
#endif
- miiphy_write(dev->name, fec->phy_id, MII_BMCR,
- BMCR_RESET);
+ fec_mdio_write(eth, fec->phy_id, MII_BMCR, BMCR_RESET);
udelay(1000);
/*
* Set the auto-negotiation advertisement register bits
*/
- miiphy_write(dev->name, fec->phy_id, MII_ADVERTISE,
+ fec_mdio_write(eth, fec->phy_id, MII_ADVERTISE,
LPA_100FULL | LPA_100HALF | LPA_10FULL |
LPA_10HALF | PHY_ANLPAR_PSB_802_3);
- miiphy_write(dev->name, fec->phy_id, MII_BMCR,
+ fec_mdio_write(eth, fec->phy_id, MII_BMCR,
BMCR_ANENABLE | BMCR_ANRESTART);
if (fec->mii_postcall)
@@ -218,8 +207,9 @@ static int miiphy_restart_aneg(struct eth_device *dev)
static int miiphy_wait_aneg(struct eth_device *dev)
{
uint32_t start;
- uint16_t status;
+ int status;
struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ struct ethernet_regs *eth = fec->bus->priv;
/*
* Wait for AN completion
@@ -231,9 +221,9 @@ static int miiphy_wait_aneg(struct eth_device *dev)
return -1;
}
- if (miiphy_read(dev->name, fec->phy_id,
- MII_BMSR, &status)) {
- printf("%s: Autonegotiation failed. status: 0x%04x\n",
+ status = fec_mdio_read(eth, fec->phy_id, MII_BMSR);
+ if (status < 0) {
+ printf("%s: Autonegotiation failed. status: %d\n",
dev->name, status);
return -1;
}
@@ -241,6 +231,8 @@ static int miiphy_wait_aneg(struct eth_device *dev)
return 0;
}
+#endif
+
static int fec_rx_task_enable(struct fec_priv *fec)
{
writel(1 << 24, &fec->eth->r_des_active);
@@ -372,6 +364,21 @@ static int fec_set_hwaddr(struct eth_device *dev)
return 0;
}
+static void fec_eth_phy_config(struct eth_device *dev)
+{
+#ifdef CONFIG_PHYLIB
+ struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ struct phy_device *phydev;
+
+ phydev = phy_connect(fec->bus, fec->phy_id, dev,
+ PHY_INTERFACE_MODE_RGMII);
+ if (phydev) {
+ fec->phydev = phydev;
+ phy_config(phydev);
+ }
+#endif
+}
+
/**
* Start the FEC engine
* @param[in] dev Our device to handle
@@ -428,9 +435,21 @@ static int fec_open(struct eth_device *edev)
}
#endif
+#ifdef CONFIG_PHYLIB
+ if (!fec->phydev)
+ fec_eth_phy_config(edev);
+ if (fec->phydev) {
+ /* Start up the PHY */
+ phy_startup(fec->phydev);
+ speed = fec->phydev->speed;
+ } else {
+ speed = _100BASET;
+ }
+#else
miiphy_wait_aneg(edev);
speed = miiphy_speed(edev->name, fec->phy_id);
miiphy_duplex(edev->name, fec->phy_id);
+#endif
#ifdef FEC_QUIRK_ENET_MAC
{
@@ -558,9 +577,10 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
fec_tbd_init(fec);
+#ifndef CONFIG_PHYLIB
if (fec->xcv_type != SEVENWIRE)
miiphy_restart_aneg(dev);
-
+#endif
fec_open(dev);
return 0;
}
@@ -762,6 +782,7 @@ static int fec_probe(bd_t *bd, int dev_id, int phy_id, uint32_t base_addr)
{
struct eth_device *edev;
struct fec_priv *fec;
+ struct mii_dev *bus;
unsigned char ethaddr[6];
uint32_t start;
int ret = 0;
@@ -836,15 +857,40 @@ static int fec_probe(bd_t *bd, int dev_id, int phy_id, uint32_t base_addr)
}
fec->phy_id = phy_id;
- miiphy_register(edev->name, fec_miiphy_read, fec_miiphy_write);
-
+ bus = mdio_alloc();
+ if (!bus) {
+ printf("mdio_alloc failed\n");
+ ret = -ENOMEM;
+ goto err3;
+ }
+ bus->read = fec_phy_read;
+ bus->write = fec_phy_write;
+ sprintf(bus->name, edev->name);
+#ifdef CONFIG_MX28
+ /*
+ * The i.MX28 has two ethernet interfaces, but they are not equal.
+ * Only the first one can access the MDIO bus.
+ */
+ bus->priv = (struct ethernet_regs *)MXS_ENET0_BASE;
+#else
+ bus->priv = fec->eth;
+#endif
+ ret = mdio_register(bus);
+ if (ret) {
+ printf("mdio_register failed\n");
+ free(bus);
+ ret = -ENOMEM;
+ goto err3;
+ }
+ fec->bus = bus;
eth_register(edev);
if (fec_get_hwaddr(edev, dev_id, ethaddr) == 0) {
debug("got MAC%d address from fuse: %pM\n", dev_id, ethaddr);
memcpy(edev->enetaddr, ethaddr, 6);
}
-
+ /* Configure phy */
+ fec_eth_phy_config(edev);
return ret;
err3:
@@ -877,9 +923,11 @@ int fecmxc_initialize_multi(bd_t *bd, int dev_id, int phy_id, uint32_t addr)
return lout;
}
+#ifndef CONFIG_PHYLIB
int fecmxc_register_mii_postcall(struct eth_device *dev, int (*cb)(int))
{
struct fec_priv *fec = (struct fec_priv *)dev->priv;
fec->mii_postcall = cb;
return 0;
}
+#endif
diff --git a/drivers/net/fec_mxc.h b/drivers/net/fec_mxc.h
index af33d21..2eb7803 100644
--- a/drivers/net/fec_mxc.h
+++ b/drivers/net/fec_mxc.h
@@ -286,7 +286,12 @@ struct fec_priv {
void *base_ptr;
int dev_id;
int phy_id;
+ struct mii_dev *bus;
+#ifdef CONFIG_PHYLIB
+ struct phy_device *phydev;
+#else
int (*mii_postcall)(int);
+#endif
};
/**
--
1.7.5.4
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