drivers: Introduce dev_set_name() ...

Introduce dev_set_name() in order to hide implementation details of
setting device's name so it'd be easier to change it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: fixed-link: read link parameters from devicetree ...

Implement the missing reading of the fixed link parameters from
the devicetree properties.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

net: phy: scan PHYs referenced by phandle ...

If we point to a PHY node by phandle, that PHY might well be on a MDIO
bus that hasn't been scanned when we look for the PHY. Fortunately we
know exactly where to look for the PHY, so make sure to scan the bus
at the right address.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Phy: Check NULL bus case and undetected phy via of ...

From 5e87dc2 Mon Sep 17 00:00:00 2001
From: Clement Leger <clement.leger@kalray.eu>
Date: Tue, 5 Sep 2017 10:37:23 +0200
Subject: [PATCH] Phy: Check NULL bus case and undetected phy via of

phy_device_connect can be called with NULL miibus for automatic match
with the phy described in the device tree. In the case where the phy
was not detected for some unknown reason, the next calls will be done
with a NULL bus. This will lead to undefined behavior and more probably
crashes.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

phy: don't crash if we have no parent ...

current code will crash if DT has no PHY entry. With this patch
we will test if parent exist, before testing the parent device node.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: of_phy_register_fixed_link(): drop redundant initialization ...

The phy_device_create() function makes all necessary phydev initialization
so we can drop phydev->pause and phydev->link initialization in
the of_phy_register_fixed_link() function.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: make locally used of_phy_register_fixed_link() static ...

The patch fixes this compiler's warning:

    drivers/net/phy/phy.c:303:20: warning: no previous prototype for
    ‘of_phy_register_fixed_link’ [-Wmissing-prototypes]

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Fix genphy_restart_aneg() for Micrel's ksz9031. ...

Commit da89ee8f2e04 ("Center FLP timing at 16ms") breaks
genphy_restart_aneg() for Micrel's ksz9031. According to the
datasheet, the ksz9031 requires a wait of 1ms after clearing
the PDOWN bit and before read/write access to any PHY registers.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Add fixed link support ...

Some network devices, especially when connected to a switch, are
connected via a fixed link. This patch adds support for a fixed phy
configured through device tree.
TODO: Add support for the "speed" and "full-duplex" properties.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Wjatscheslaw Stoljarski <wjatscheslaw.stoljarski@kiwigrid.com>

miitool: Add code to register a PHY ...

This commit changes the behaviour of the 'miitool'. Now in order to show
PHY's link information 'miitool' should be invoked as such:

miitool -s [PHY]

Also, implment code to allow to register a dummy PHY device in order to
be able to perform raw MDIO bus access.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mdio_bus: Change PHY's naming scheme ...

Change the way PHY devices are named upon creation. This commit replaces
sequentialy numbered "/dev/phy%d" with "/dev/mdio%d-phy%02x". This way
it is significanlty easier to identify which PHY in real-life (e.g. on a
schematic) corresponds to which device in /dev.

Also, replace asprintf with xasprintf to provide some form of memory
allocation failure checking.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: wait for link OK after successfull autonegotiation ...

It may take some time for PHY to indicate link OK status after
autonegotiation completed. This change addresses this case
and prevent network commands fails due to the delay.

Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: at803x: Use genphy_config_init ...

Based on the Linux commit:

6ff01db net: phy: at803x: use genphy_config_init()

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Add missing phy_unregister_device ...

The counterpart of phy_register_device is missing. Add it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: don't use 'dev' as name for variables of type struct phy_device ...

Using 'dev' as name for variables which are not of type
struct device(_d) is bad habit and leads to confusions. Use phydev
instead.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Use xzalloc for small allocations ...

No need to call kzalloc for small allocations, xzalloc will do without
the need for an additional check.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: introduce phy_aneg_done ...

phy_wait_aneg_done() is directly called by the network code, so it
should not read phy registers directly. Introduce phy_aneg_done to
give phy drivers the chance to do something different to poll for
autonegotiation completion.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Add fallbacks for the obsoletes phy DT properties ...

In addition to the standard 'phy-handle' devicetree property, the binding
specifies two properties, which are considered obsolete: 'phy' and 'phy-device'.
This commit adds support for them in of_mdio_find_phy().

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/net-of-phy'

net: phy: genphy: Make it work with of_set_phy_supported ...

phys start with features initialized from the phy driver
and are eventually limited by of_set_phy_supported. This
does not work with the genphy driver which starts with
no features and overwrites phydev->supported with the
values read from hardware in config_init. This overwrites
the features adjusted by of_set_phy_supported.
To fix this let the genphy driver start with full features
which are then only limited in config_init, but never
extended.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: genphy: always write MII_CTRL1000 when available ...

the phydev->supported field does not necessarily match the hardware
capabilities, it could be limited by the board to force the phy
to a lower speed. In this case make sure the gigabit advertise bits
are cleared on a gigabit phy.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: remove now unused of_phy_device_connect ...

Since barebox handles phys from devicetree transparently we no longer
need of_phy_device_connect.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Support finding a phy in the devicetree ...

When the ethernet device has a device_node then try finding
the associated phy via the phy-handle property.

This makes the phy handling via devicetree transparent to the
ethernet drivers.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: move setting of phy_map to phy_register_device ...

The phy_map should be valid once a phy_device is registered. This
allows registering phys outside of mdiobus_scan.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: factor out phy_device_attach function ...

phy_device_connect combines searching for a phy with actually attaching
it to the ethernet device. Factor out a phy_device_attach function to
have a function for each purpose. This makes the logic of phy_device_connect
simpler.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Print ethernet device in the link information ...

When multiple ethernet devices are in use it's interesting to know
which one has link.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: add of_phy_device_connect ...

This implements a of_phy_device_connect to allow DT enabled drivers
to connect to a PHY device by using the PHY's DT node only. It
currently assumes that each PHY node is a child of the corresponding
mdio bus.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Fix crash when no phy is found ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net/phy/phy.c: fix whitespace ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: implement detect callback for miibus devices ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>