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authorGabor Juhos <juhosg@openwrt.org>2010-06-08 20:17:55 +0000
committerGabor Juhos <juhosg@openwrt.org>2010-06-08 20:17:55 +0000
commitf96f1cd16f218b5b4d6bdc3c93ae234b5b21cf40 (patch)
tree970960f011572387cf91916e1a4d492da378d704 /target/linux/generic-2.6
parentc0c0a607188c4948f1f8648ecca9ea2110837b66 (diff)
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ip17xx: Consolidate operations with PHY registers
Call mdiobus_{read,write} instead of duplicating their code. Introduce ip_phy_write_masked(), which changes a part of a register. Will be used later in this patch series. Please note that it does not hold any lock between reading and writing, so it is up to the caller to serialize. Also add DUMP_MII_IO, which enables logging of all MII accesses. Signed-off-by: Martin Mares <mj@ucw.cz> Signed-off-by: Patrick Horn <patrick.horn@gmail.com> SVN-Revision: 21709
Diffstat (limited to 'target/linux/generic-2.6')
-rw-r--r--target/linux/generic-2.6/files/drivers/net/phy/ip175c.c87
1 files changed, 40 insertions, 47 deletions
diff --git a/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c b/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c
index 1e83477bc3..cf22908825 100644
--- a/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c
+++ b/target/linux/generic-2.6/files/drivers/net/phy/ip175c.c
@@ -28,6 +28,7 @@
#define MAX_VLANS 16
#define MAX_PORTS 9
+#undef DUMP_MII_IO
typedef struct ip175c_reg {
u16 p; // phy
@@ -254,59 +255,57 @@ struct ip175c_state {
char buf[80];
};
-static int ip_phy_read(struct mii_bus *bus, int port, int reg)
+static int ip_phy_read(struct ip175c_state *state, int port, int reg)
{
- int val;
-
- mutex_lock(&bus->mdio_lock);
- val = bus->read(bus, port, reg);
- mutex_unlock(&bus->mdio_lock);
-
+ int val = mdiobus_read(state->mii_bus, port, reg);
+ if (val < 0)
+ pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
+#ifdef DUMP_MII_IO
+ else
+ pr_debug("IP175C: Read MII(%d,%d) -> %04x\n", port, reg, val);
+#endif
return val;
}
-static int ip_phy_write(struct mii_bus *bus, int port, int reg, u16 val)
+static int ip_phy_write(struct ip175c_state *state, int port, int reg, u16 val)
{
int err;
- mutex_lock(&bus->mdio_lock);
- err = bus->write(bus, port, reg, val);
- mutex_unlock(&bus->mdio_lock);
-
+#ifdef DUMP_MII_IO
+ pr_debug("IP175C: Write MII(%d,%d) <- %04x\n", port, reg, val);
+#endif
+ err = mdiobus_write(state->mii_bus, port, reg, val);
+ if (err < 0)
+ pr_warning("IP175C: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
return err;
}
-static int getPhy (struct ip175c_state *state, reg mii)
+static int ip_phy_write_masked(struct ip175c_state *state, int port, int reg, unsigned int mask, unsigned int data)
{
- struct mii_bus *bus = state->mii_bus;
- int val;
+ int val = ip_phy_read(state, port, reg);
+ if (val < 0)
+ return 0;
+ return ip_phy_write(state, port, reg, (val & ~mask) | data);
+}
+static int getPhy(struct ip175c_state *state, reg mii)
+{
if (!REG_SUPP(mii))
return -EFAULT;
-
- val = ip_phy_read(bus, mii.p, mii.m);
- if (val < 0)
- pr_warning("IP175C: Unable to get MII register %d,%d: error %d\n", mii.p,mii.m,-val);
-
- return val;
+ return ip_phy_read(state, mii.p, mii.m);
}
-static int setPhy (struct ip175c_state *state, reg mii, u16 value)
+static int setPhy(struct ip175c_state *state, reg mii, u16 value)
{
- struct mii_bus *bus = state->mii_bus;
int err;
if (!REG_SUPP(mii))
return -EFAULT;
-
- err = ip_phy_write(bus, mii.p, mii.m, value);
- if (err < 0) {
- pr_warning("IP175C: Unable to set MII register %d,%d to %d: error %d\n", mii.p,mii.m,value,-err);
+ err = ip_phy_write(state, mii.p, mii.m, value);
+ if (err < 0)
return err;
- }
- mdelay(2);
getPhy(state, mii);
return 0;
}
@@ -833,14 +832,11 @@ static int ip175c_reset(struct switch_dev *dev)
err = getPhy(state, state->regs->MODE_REG);
}
- if (REG_SUPP(state->regs->RESET_REG)) {
- /* reset external phy ports, except on IP175A */
- for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
- err = state->mii_bus->write(state->mii_bus, i,
- MII_BMCR, BMCR_RESET);
- if (err < 0)
- return err;
- }
+ /* reset switch ports */
+ for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
+ err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
+ if (err < 0)
+ return err;
}
return 0;
@@ -983,7 +979,6 @@ static int ip175c_read_name(struct switch_dev *dev, const struct switch_attr *at
static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
struct ip175c_state *state = dev->priv;
- struct mii_bus *bus = state->mii_bus;
int nr = val->port_vlan;
int ctrl;
int autoneg;
@@ -1006,7 +1001,7 @@ static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_att
if (nr >= dev->ports || nr < 0)
return -EINVAL;
- ctrl = ip_phy_read(bus, nr, 0);
+ ctrl = ip_phy_read(state, nr, 0);
if (ctrl < 0)
return -EIO;
@@ -1015,13 +1010,12 @@ static int ip175c_set_port_speed(struct switch_dev *dev, const struct switch_att
ctrl |= (autoneg<<12);
ctrl |= (speed<<13);
- return ip_phy_write(bus, nr, 0, ctrl);
+ return ip_phy_write(state, nr, 0, ctrl);
}
static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
struct ip175c_state *state = dev->priv;
- struct mii_bus *bus = state->mii_bus;
int nr = val->port_vlan;
int speed, status;
@@ -1033,8 +1027,8 @@ static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_att
if (nr >= dev->ports || nr < 0)
return -EINVAL;
- status = ip_phy_read(bus, nr, 1);
- speed = ip_phy_read(bus, nr, 18);
+ status = ip_phy_read(state, nr, 1);
+ speed = ip_phy_read(state, nr, 18);
if (status < 0 || speed < 0)
return -EIO;
@@ -1050,7 +1044,6 @@ static int ip175c_get_port_speed(struct switch_dev *dev, const struct switch_att
static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
struct ip175c_state *state = dev->priv;
- struct mii_bus *bus = state->mii_bus;
int ctrl, speed, status;
int nr = val->port_vlan;
int len;
@@ -1065,9 +1058,9 @@ static int ip175c_get_port_status(struct switch_dev *dev, const struct switch_at
if (nr >= dev->ports || nr < 0)
return -EINVAL;
- ctrl = ip_phy_read(bus, nr, 0);
- status = ip_phy_read(bus, nr, 1);
- speed = ip_phy_read(bus, nr, 18);
+ ctrl = ip_phy_read(state, nr, 0);
+ status = ip_phy_read(state, nr, 1);
+ speed = ip_phy_read(state, nr, 18);
if (ctrl < 0 || status < 0 || speed < 0)
return -EIO;