firewire: Add phy register defines.

Signed-off-by: Marc Butler <marc@adaptivecode.com>
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (added whitespace)

2 files changed, 16 insertions, 4 deletions

diff --git a/drivers/firewire/fw-card.c b/drivers/firewire/fw-card.c
index d929eb6fef6a..34863b60e23f 100644
--- a/drivers/firewire/fw-card.c
+++ b/drivers/firewire/fw-card.c
@@ -395,9 +395,9 @@ fw_card_add(struct fw_card *card,
         card->link_speed = link_speed;
         card->guid = guid;
 
-        /* FIXME: add #define's for phy registers. */
         /* Activate link_on bit and contender bit in our self ID packets.*/
-        if (card->driver->update_phy_reg(card, 4, 0, 0x80 | 0x40) < 0)
+        if (card->driver->update_phy_reg(card, 4, 0,
+                                         PHY_LINK_ACTIVE | PHY_CONTENDER) < 0)
                 return -EIO;
 
         /* The subsystem grabs a reference when the card is added and
@@ -483,7 +483,8 @@ static struct fw_card_driver dummy_driver = {
 void
 fw_core_remove_card(struct fw_card *card)
 {
-        card->driver->update_phy_reg(card, 4, 0x80 | 0x40, 0);
+        card->driver->update_phy_reg(card, 4,
+                                     PHY_LINK_ACTIVE | PHY_CONTENDER, 0);
         fw_core_initiate_bus_reset(card, 1);
 
         down_write(&fw_bus_type.subsys.rwsem);
@@ -531,6 +532,11 @@ EXPORT_SYMBOL(fw_card_put);
 int
 fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
 {
-        return card->driver->update_phy_reg(card, short_reset ? 5 : 1, 0, 0x40);
+        int reg = short_reset ? 5 : 1;
+        /* The following values happen to be the same bit. However be
+         * explicit for clarity. */
+        int bit = short_reset ? PHY_BUS_SHORT_RESET : PHY_BUS_RESET;
+
+        return card->driver->update_phy_reg(card, reg, 0, bit);
 }
 EXPORT_SYMBOL(fw_core_initiate_bus_reset);
diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
index 662149723e98..63527340152b 100644
--- a/drivers/firewire/fw-transaction.h
+++ b/drivers/firewire/fw-transaction.h
@@ -107,6 +107,12 @@
 #define PHY_PACKET_LINK_ON      0x1
 #define PHY_PACKET_SELF_ID      0x2
 
+/* Bit fields _within_ the PHY registers. */
+#define PHY_LINK_ACTIVE         0x80
+#define PHY_CONTENDER           0x40
+#define PHY_BUS_RESET           0x40
+#define PHY_BUS_SHORT_RESET     0x40
+
 #define CSR_REGISTER_BASE               0xfffff0000000ULL
 
 /* register offsets relative to CSR_REGISTER_BASE */