resource: Let dev_request_mem_region return an error pointer ...

For all users fix or add the error check.

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

net: cpsw: Allow multiple slaves ...

The driver is ready now for handling both slaved, so add support
for it.

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

net: cpsw: Always write mac_control register ...

Instead of keeping track of the mac_control register value and
only writing to it when it changed just always write it. This is
more safe anyway since the mac_control register content is altered
in the soft_reset functions.

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

net: cpsw: use slave device for dev_dbg ...

Since the cpsw has two slaves which handle one network interface
each the slave number is interesting during debugging. use the
slave device for dev_dbg.

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

net: cpsw: register slaves as devices ...

This makes it possible to directly call dev_dbg and friends
on the slave. Also the ethernet aliases in the devicetree
now match the devices.

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

net: cpsw: Pass correct slave ...

Pass the current slave to cpsw_slave_init/cpsw_update_link,
not the first one.

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

net: Pass eth_device to net_receive ...

So that barebox has the information which interface a packet
came from.

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

net cpsw: fix rx stability under heavy network load ...

RX DMA Head Descriptor Pointer can get 0 when there is a lot of traffic,
which results in a timeout error. A good way to provoke this error is by
sending lots of ARP requests. This patch makes sure that the RX DMA Head
Descriptor Pointer is set.

The origin driver, from which this is derived, already contains this fix.

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: cpsw: Fix gmii_sel config ...

Prober slave_num is needed by cpsw_gmii_sel_am335x to calc reg value.

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: cpsw: straighten error path ...

This mainly has the effect of checking the return value of eth_register.

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

net: cpsw: attach slave to edev->priv ...

An ethernet device belongs to a slave, so set edev->priv to the slave
and not to the cpsw.

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

net: cpsw: drop for_each_slave ...

We currently only use one slave, so drop for_each_slave and hardcode
slave[0] until we pass the proper context to the functions that makes
this hack unnecessary.

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

net: cpsw: move eth_device into slave ...

An ethernet device is per slave, not per cpsw.

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

cpsw: Add devicetree probe support ...

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

net: cpsw: inline slave_data ...

Devicetree probed cpsw devices won't have platform_data, so inline
the fields from slave_data instead of keeping a pointer.

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

Use new device_platform_driver() macro for drivers ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: net: add driver for TI CPSW ...

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