net: dsa: mv88e6xxx: abstract PHY ops

Old chips use a direct access to the PHY devices registers. Next chips
have a PHY Polling Unit (PPU) which needs to be disabled before
accessing PHY registers. Newer chips have an indirect access to the PHY
devices so that disabling the PPU is not necessary.

Introduce a new phy_ops structure in the chip to describe the required
PHY access routines.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
index 8be0f36..1dd96e7 100644
--- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
@@ -634,6 +634,7 @@ struct mv88e6xxx_chip {
 	/* Handles automatic disabling and re-enabling of the PHY
 	 * polling unit.
 	 */
+	const struct mv88e6xxx_ops *phy_ops;
 	struct mutex		ppu_mutex;
 	int			ppu_disabled;
 	struct work_struct	ppu_work;