linux.git/drivers/net/phy, branch v4.0-rc2

net: phy: micrel: disable NAND-tree for KSZ8021, KSZ8031, KSZ8051, KSZ8081

2015-02-15T04:30:55+00:00

NAND-tree is used to check wiring between MAC and PHY using NAND gates
on the PHY side, hence the name.

NAND-tree initial status is latched at reset by probing the IRQ pin.
However some devices are sharing the PHY IRQ pin with other peripherals
such as Atmel SAMA5D[34]x-EK boards when using the optional TM7000
display module, therefore they are switching the PHY in NAND-tree test
mode depending on the current IRQ line status at reset.

This patch ensure PHY is not in NAND-tree test mode for all Micrel PHYs
using IRQ line as a NAND-tree toggle mode at reset.

Signed-off-by: Sylvain Rochet 
Signed-off-by: Boris Brezillon 
Signed-off-by: David S. Miller

net: phy: Invalidate LP advertising flags when restarting or disabling AN

2015-01-27T08:27:08+00:00

It is possible to see the old value of the LP advertising flags
through ethtool after reconfiguring the PHY and before autonegotiation
completes.  If autonegotiation is turned off then the last value seen
will persist indefinitely.

Signed-off-by: Ben Hutchings 
Acked-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: avoid suspending twice a PHY

2015-01-27T08:16:51+00:00

As part of a call to ndo_close() a netdevice driver may call
phy_disconnect() -> phy_detach() -> phy_suspend(), such that the PHY is
suspsended at this point and a netdevice driver may clock gate the
backing peripheral providing MDIO bus accessses as well.

Update mdio_bus_phy_may_suspend() to return whether a PHY is allowed to
be suspended and conversely resumed if and only if it was not previously
suspended before while it is currently in detached (netdev pointer is
NULL) state.

This fixes bus errors seen during S2/S3 suspend/resume cycles for
netdevice drivers such as GENET which clock gates the entire Ethernet
MAC, including the MDIO bus block.

Acked-by: Fugang Duan 
Tested-by: Fugang Duan 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: keep track of the PHY suspend state

2015-01-27T08:16:51+00:00

In order to avoid double calls to phydev->drv->suspend and resume, keep
track of whether the PHY has already been suspended as a consequence of
a successful call to phy_suspend(). We will use this in our MDIO bus
suspend/resume hooks to avoid a double suspend call.

Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: utilize phy_suspend and phy_resume

2015-01-27T08:16:51+00:00

phy_suspend and phy_resume are an abstraction on top of the PHY device
driver suspend and resume callbacks, utilize those since they are the
proper interface to suspending and resuming a PHY device.

Acked-by: Fugang Duan 
Tested-by: Fugang Duan 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: fixed: allow setting no update_link callback

2015-01-26T00:02:13+00:00

fixed_phy_set_link_update() contains an early check against a NULL
callback pointer, which basically prevents us from removing any
previous callback we may have set. The users of the fp->link_update
callback deal with a NULL callback just fine, so we really want to allow
"removing" a link_update callback to avoid dangling callback pointers
during e.g: module removal.

Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

amd-xgbe-phy: Allow certain PHY settings to be set by UEFI

2015-01-17T03:24:21+00:00

Certain PHY settings need to be configurable by UEFI depending on the
platform being used.  Add new device tree / ACPI properties that, if
present, will override the pre-determined values currently used.

Signed-off-by: Tom Lendacky 
Signed-off-by: David S. Miller

amd-xgbe: Add ACPI support

2015-01-17T03:24:20+00:00

Add support for ACPI to the amd-xgbe and amd-xgbe-phy drivers. This
support converts many of the device tree APIs to the new device_property
APIs.

Signed-off-by: Tom Lendacky 
Signed-off-by: David S. Miller

amd-xgbe-phy: Use the proper auto-negotiation XNP registers

2015-01-17T03:24:20+00:00

When receiving and processing extended next pages the base registers
were used instead of the XNP registers. Update the code to use the
device XNP and link partner XNP registers.

Signed-off-by: Tom Lendacky 
Signed-off-by: David S. Miller

amd-xgbe-phy: Properly support the FEC auto-negotiation

2015-01-17T03:24:20+00:00

Advertise and apply the Forward Error Correction capabilities of the
device based on the FEC ability of the device. Also, remove the use
of some hard coded values related to KR and FEC in preference of some
#defines.

Signed-off-by: Tom Lendacky 
Signed-off-by: David S. Miller