int hieth_mdio_read(struct hieth_mdio_local *ld, int phy_addr, int regnum)
{
int val = 0;
hieth_assert((!(phy_addr & (~0x1F))) && (!(regnum & (~0x1F))));
local_lock(ld);
if (!wait_mdio_ready(ld)) {
hieth_error("mdio busy");
goto error_exit;
}
mdio_start_phyread(ld, phy_addr, regnum);
if (wait_mdio_ready(ld))
val = mdio_get_phyread_val(ld);
else
hieth_error("read timeout");
error_exit:
local_unlock(ld);
hieth_trace(4, "phy_addr = %d, regnum = %d, val = 0x%04x",
phy_addr, regnum, val);
return val;
}
static int higmac_mdio_read(struct higmac_mdio_local *ld,
char *devname, unsigned char phy,
unsigned char reg, unsigned short *value)
{
int timeout = 1000;
if (!wait_mdio_ready(ld))
return -1;
mdio_start_phyread(ld, phy, reg);
while (!wait_mdio_ready(ld) && timeout-- > 0)
udelay(1);
if (timeout <= 0 || !test_mdio_read_data_done(ld)) {
*value = 0;
/* it should return Error(-1), but miiphy_read() will
* print error info, it's annoying
*/
return 0;
}
*value = mdio_get_phyread_val(ld);
higmac_trace(2, "mdio read phy:%x, reg:%x = %x\n", phy, reg, *value);
return 0;
}