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Subject[PATCH 1/2] net: dm9000: Read GPR, modify and write
Date
The GPR register should be read, modified and write to
activate the PHY. A simple write 0 to the GPR might override
other register values with needs to keep.
Some codestyle fixes (mostly leading spaces)

Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
---
drivers/net/ethernet/davicom/dm9000.c | 23 +++++++++++++++--------
1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index 7080ad6..0349b91 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c
@@ -745,9 +745,9 @@ static const struct ethtool_ops dm9000_ethtool_ops = {
.get_link = dm9000_get_link,
.get_wol = dm9000_get_wol,
.set_wol = dm9000_set_wol,
- .get_eeprom_len = dm9000_get_eeprom_len,
- .get_eeprom = dm9000_get_eeprom,
- .set_eeprom = dm9000_set_eeprom,
+ .get_eeprom_len = dm9000_get_eeprom_len,
+ .get_eeprom = dm9000_get_eeprom,
+ .set_eeprom = dm9000_set_eeprom,
};

static void dm9000_show_carrier(board_info_t *db,
@@ -795,7 +795,7 @@ dm9000_poll_work(struct work_struct *w)
}
} else
mii_check_media(&db->mii, netif_msg_link(db), 0);
-
+
if (netif_running(ndev))
dm9000_schedule_poll(db);
}
@@ -1286,6 +1286,7 @@ dm9000_open(struct net_device *dev)
{
board_info_t *db = netdev_priv(dev);
unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK;
+ int gprval;

if (netif_msg_ifup(db))
dev_dbg(db->dev, "enabling %s\n", dev->name);
@@ -1298,9 +1299,15 @@ dm9000_open(struct net_device *dev)

irqflags |= IRQF_SHARED;

+ gprval = ior(db, DM9000_GPR);
+
/* GPIO0 on pre-activate PHY, Reg 1F is not set by reset */
- iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */
- mdelay(1); /* delay needs by DM9000B */
+ if (gprval & (1<<0)) {
+ dev_dbg(db->dev, "Activate PHY GPR: 0x%x\n", gprval);
+ gprval = gprval & ~(1<<0);
+ iow(db, DM9000_GPR, gprval); /* REG_1F bit0 activate phyxcer */
+ mdelay(1); /* delay needs by DM9000B */
+ }

/* Initialize DM9000 board */
dm9000_reset(db);
@@ -1314,7 +1321,7 @@ dm9000_open(struct net_device *dev)

mii_check_media(&db->mii, netif_msg_link(db), 1);
netif_start_queue(dev);
-
+
dm9000_schedule_poll(db);

return 0;
@@ -1628,7 +1635,7 @@ dm9000_probe(struct platform_device *pdev)

if (!is_valid_ether_addr(ndev->dev_addr)) {
/* try reading from mac */
-
+
mac_src = "chip";
for (i = 0; i < 6; i++)
ndev->dev_addr[i] = ior(db, i+DM9000_PAR);
--
1.7.10.4


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