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103 lines
3.2 KiB
103 lines
3.2 KiB
11 years ago
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From 9b744942290c168287013f0a19ff7392f65c8107 Mon Sep 17 00:00:00 2001
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From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Date: Fri, 16 May 2014 16:14:03 +0200
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Subject: net: phy: decouple PHY id and PHY address in fixed PHY driver
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Until now, the fixed_phy_add() function was taking as argument
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'phy_id', which was used both as the PHY address on the fake fixed
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MDIO bus, and as the PHY id, as available in the MII_PHYSID1 and
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MII_PHYSID2 registers. However, those two informations are completely
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unrelated.
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This patch decouples them. The PHY id of fixed PHYs is hardcoded to be
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0x0. Ideally, a really reserved value would be nicer, but there
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doesn't seem to be an easy of making sure a dummy value can be
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assigned to the Linux kernel for such usage.
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The PHY address remains passed by the caller of phy_fixed_add().
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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Tested-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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--- a/drivers/net/phy/fixed.c
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+++ b/drivers/net/phy/fixed.c
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@@ -31,7 +31,7 @@ struct fixed_mdio_bus {
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};
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struct fixed_phy {
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- int id;
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+ int addr;
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u16 regs[MII_REGS_NUM];
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struct phy_device *phydev;
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struct fixed_phy_status status;
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@@ -104,8 +104,8 @@ static int fixed_phy_update_regs(struct
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if (fp->status.asym_pause)
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lpa |= LPA_PAUSE_ASYM;
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- fp->regs[MII_PHYSID1] = fp->id >> 16;
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- fp->regs[MII_PHYSID2] = fp->id;
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+ fp->regs[MII_PHYSID1] = 0;
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+ fp->regs[MII_PHYSID2] = 0;
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fp->regs[MII_BMSR] = bmsr;
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fp->regs[MII_BMCR] = bmcr;
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@@ -115,7 +115,7 @@ static int fixed_phy_update_regs(struct
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return 0;
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}
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-static int fixed_mdio_read(struct mii_bus *bus, int phy_id, int reg_num)
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+static int fixed_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num)
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{
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struct fixed_mdio_bus *fmb = bus->priv;
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struct fixed_phy *fp;
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@@ -124,7 +124,7 @@ static int fixed_mdio_read(struct mii_bu
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return -1;
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list_for_each_entry(fp, &fmb->phys, node) {
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- if (fp->id == phy_id) {
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+ if (fp->addr == phy_addr) {
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/* Issue callback if user registered it. */
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if (fp->link_update) {
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fp->link_update(fp->phydev->attached_dev,
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@@ -138,7 +138,7 @@ static int fixed_mdio_read(struct mii_bu
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return 0xFFFF;
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}
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-static int fixed_mdio_write(struct mii_bus *bus, int phy_id, int reg_num,
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+static int fixed_mdio_write(struct mii_bus *bus, int phy_addr, int reg_num,
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u16 val)
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{
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return 0;
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@@ -160,7 +160,7 @@ int fixed_phy_set_link_update(struct phy
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return -EINVAL;
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list_for_each_entry(fp, &fmb->phys, node) {
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- if (fp->id == phydev->phy_id) {
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+ if (fp->addr == phydev->addr) {
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fp->link_update = link_update;
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fp->phydev = phydev;
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return 0;
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@@ -171,7 +171,7 @@ int fixed_phy_set_link_update(struct phy
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}
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EXPORT_SYMBOL_GPL(fixed_phy_set_link_update);
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-int fixed_phy_add(unsigned int irq, int phy_id,
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+int fixed_phy_add(unsigned int irq, int phy_addr,
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struct fixed_phy_status *status)
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{
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int ret;
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@@ -184,9 +184,9 @@ int fixed_phy_add(unsigned int irq, int
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memset(fp->regs, 0xFF, sizeof(fp->regs[0]) * MII_REGS_NUM);
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- fmb->irqs[phy_id] = irq;
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+ fmb->irqs[phy_addr] = irq;
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- fp->id = phy_id;
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+ fp->addr = phy_addr;
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fp->status = *status;
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ret = fixed_phy_update_regs(fp);
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