u-boot.git/drivers/core/uclass.c, branch v2016.01

dm: core: Remove unnecessary codes in uclass_pre_remove_device()

2015-10-29T19:05:51+00:00

dev->uclass->uc_drv->per_device_auto_alloc_size is to be freed in
device_free(), so is dev->seq. Remove these unnecessary codes.

Signed-off-by: Bin Meng 
Acked-by: Simon Glass

dm: Improve handling of a missing uclass

2015-09-03T03:28:23+00:00

When a uclass definition is missing, no drivers in that uclass can operate.
This can happen if a board has a strange collection of options (e.g. the
driver is enabled but the uclass is not).

Unfortunately this is very confusing at present. Starting up driver model
results in a -ENOENT error, which is pretty generic. Quite a big of digging
is needed to get to the root cause.

To help with this, change the error to a very strange one with no other
users in U-Boot. Also add a debug message.

Signed-off-by: Simon Glass

dm: drop CONFIG_DM_DEVICE_REMOVE from uncmd list

2015-08-18T17:46:04+00:00

We do not want to compile the DM remove code for SPL.  Currently,
we undef it in include/config_uncmd_spl.h (for C files) and in
scripts/Makefile.uncmd_spl (for Makefiles).  This is really ugly.

This commit demonstrates how we can deprecate those two files.

Use $(SPL_) for the entry in the Makfile and CONFIG_IS_ENABLED()
in C files.

Signed-off-by: Masahiro Yamada 
Reviewed-by: Tom Rini 
Reviewed-by: Simon Glass

dm: core: Support finding a device by phandle

2015-08-06T02:57:51+00:00

It is common for one node to reference another via a phandle. Add support
for obtaining an attached device by this method. As an example, a node may
have a 'power-supply' property which references a regulator, allowing the
driver to turn on its power.

Signed-off-by: Simon Glass

dm: core: Check for empty list in uclass_find_device()

2015-08-05T14:42:40+00:00

This function needs to check the list has entries before traversing it.
Fix this bug.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: change dm_warn() message into debug() in uclass_add()

2015-07-21T23:39:34+00:00

The command "dm uclass" tries to display all the UClasses, but
some of them might be disabled by Kconfig.

The function do_dm_dump_uclass() iterates over all the UClass IDs
and calls uclass_get() for each of them.  Then, it displays annoying
message "Cannot find uclass for id ..." every time it fails to get
the UClass.

As a result, we get much noisier log for the "dm uclass" command.

  => dm uclass
  uclass 0: root
  - * root_driver @ bfb54028, seq 0, (req -1)

  Cannot find uclass for id 1: please add the UCLASS_DRIVER() ...
  Cannot find uclass for id 2: please add the UCLASS_DRIVER() ...
  Cannot find uclass for id 3: please add the UCLASS_DRIVER() ...
  Cannot find uclass for id 4: please add the UCLASS_DRIVER() ...
  Cannot find uclass for id 5: please add the UCLASS_DRIVER() ...
  Cannot find uclass for id 6: please add the UCLASS_DRIVER() ...

This commit suppresses these warnings.

Signed-off-by: Masahiro Yamada 
Acked-by: Simon Glass

dm: core: Correct bug introduced in uclass_first/next_device()

2015-04-28T22:49:03+00:00

These functions now rely on uclass_find_first/next_device() and assume that
they will either return failure (-ve error code) or a device. In fact,
coming to the end of a list is not considered failure and they return 0
in that case.

The logic to deal with this was replaced in commit acb9ca2a with just using
uclass_get_device_tail(). Add back the missing logic. This bug was
caught by unit tests but since they were broken for other reasons at the
time, this was not noticed.

Signed-off-by: Simon Glass

dm: core: Remove unbind operations when not required

2015-04-23T15:05:52+00:00

The CONFIG_DM_DEVICE_REMOVE option takes out code related to removing
devices. It should also remove the 'unbind' code since if we cannot
remove we probably don't need to unbind.

Signed-off-by: Simon Glass

dm: core: Handle recursive unbinding of uclass devices

2015-04-22T17:13:17+00:00

Since a device can have children in the same uclass as itself, we need
to handle unbinding carefully: we must allow that unbinding a device in a
uclass may cause another device in the same uclass to be unbound.

Adjust the code to cope.

Signed-off-by: Simon Glass 
Reviewed-by: Joe Hershberger 
Tested-by: Joe Hershberger

dm: core: remove type 'static' of function uclass_get_device_tail()

2015-04-22T17:03:15+00:00

Uclass API provides a few functions for get/find the device.
To provide a complete function set of uclass-internal functions,
for use by the drivers, the function uclass_get_device_tail()
should be non-static.

Signed-off-by: Przemyslaw Marczak 
Cc: Simon Glass 
Acked-by: Simon Glass