treewide: remove references to CREDITS ...

The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: Read dma_offset from device tree ...

This reads the dma-ranges property from the device tree and sets
dma_offset in the devices accordingly. The code is mostly taken
from the Kernel as of v5.5-rc1. of_dma_configure() is trimmed down
to the cases we want to support currently.

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

drivers: of: Add function to enable and register a device by alias ...

In some cases node names are not unique and passing the full path is really long.
So make add a new device by passing the alias string possible.

Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: Add .of suffix to device names from devicetree ...

Previous implementation used to add a number to the device names
for devices registered from the device tree which did not have a 'reg'
property, thus a device node named "state" resulted in a device name
"state.<x>". Current implementation skips that number and we get a
device named "state". This conflicts with our barebox state
implementation which tries to register a device named "state" itself.
We could rename the state device nodes of all our device trees, but it
causes less trouble to rename the devices.

This adds a ".of" suffix to the device names for devices registered from
the device tree which also has the nice effect that they now can easily
be recognized.

Fixes: 7e497d48acbd11 ("of: Port latest of_device_make_bus_id() implementation")

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

of: Port latest of_device_make_bus_id() implementation ...

Code implementing of_device_make_bus_id() in Barebox uses rather old
implementation from Linux kernel and has a very significan limitation
in that it will produce identical names for different DT nodes that
happen to have the same node name as well as "reg" property.

One such example, that tirggered this change, is "switch@0" nodes that
can be found in dts/src/arm/vf610-zii-dev-rev-c.dts

This commit replaces original code with the current Linux kernel
implementation that traverses DT hierarchy from leaf node to its root
concatenating node names in the process.

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

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>

of: Use %pa to print resource_size_t type ...

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

Convert users of PRINTF_CONVERSION_RESOURCE to %pa ...

printf now supports printing resource_size_t directly, convert
all users of the previously used PRINTF_CONVERSION_RESOURCE over
to %pa.

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

of: export of_platform_device_create ...

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

of: Create platform_device when creating AMBA device failed ...

If creating an AMBA device failed, maybe because AMBA support is
not compiled in, register the device as regular platform device.

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

of: Add of_device_enable_and_register functions ...

Function to enable and register a disabled device.
The devices can be registered using the
device node with of_device_enable_and_register() or
with the device node name/path by using the
of_device_enable_and_register_by_name() function.

Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: platform: Use PRINTF_CONVERSION_RESOURCE for printing resources ...

Avoids compiler warnings about wrong format specifiers

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

of: platform: Fix possible crash ...

"dev" may uninitialized or points to incorrect device. While at
it make the message more informative.

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

OF: import bus/device related functions from Linux OF API ...

This imports some bus and device related functions from Linux OF API
with some modifcations for Barebox.

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