Most PHYs connect to an ethernet controller over a GMII or MII
interface.  However, a growing number are connected over
different interfaces, such as RGMII or SGMII.

The ethernet driver will tell the PHY what type of connection it
is by setting it manually, or passing it in through phy_connect
(or phy_attach).

Changes include:
* Updates to documentation
* Updates to PHY Lib consumers
* Changes to PHY Lib to add interface support
* Some minor changes to whitespace in phy.h
* gianfar driver now detects interface and passes appropriate
  value to PHY Lib
Signed-off-by: NAndrew Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

 The <linux/phy.h> uses some types and macros defined in
<linux/ethtool.h>, <linux/mii.h>, <linux/timer.h> and <linux/workqueue.h>,
but fails to include these headers.
Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org>

patch-mips-2.6.18-20060920-include-phy-16
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This makes it possible for HW PHY-less boards to utilize PAL goodies.  Generic
routines to connect to fixed PHY are provided, as well as ability to specify
software callback that fills up link, speed, etc.  information into PHY
descriptor (the latter feature not tested so far).
Signed-off-by: NVitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Add the PHY_ID_FMT macro to ensure that the format of the id string used by a
driver to match to its specific phy is consistent between the mdio_bus and the
driver.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Adds a phy_mask field to struct mii_bus and uses it.  This field
indicates each phy address to be ignored when probing the mdio bus.

This support is needed for the fs_enet and ibm_emac drivers to be
converted to the generic phy layer among other drivers. Many systems
lock up on probing certain phy addresses or probing doesn't return
0xffff when nothing is found at the address. A new driver I'm
working on also makes use of this mask.
Signed-off-by: NMatt Porter <mporter@kernel.crashing.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

This patch adds back the code that was taken out, thus re-enabling:

* The PHY Layer to initialize without crashing
* Drivers to actually connect to PHYs
* The entire PHY Control Layer

This patch is used by the gianfar driver, and other drivers which are in
development.
Signed-off-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

- unexport symbols never used outside of home module
- remove dead code
- remove CONFIG_PHYCONTROL, make it unconditionally enabled

Includes fixes for problems noted by Adrian Bunk, Andrew Morton,
and one other person lost in the annals of history (and email folders).

ethernet drivers to remain as ignorant as is reasonable of the connected
PHY's design and operation details.
Signed-off-by: NAndy Fleming <afleming@freescale.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>