UPSTREAM: dm: core: Do not stop uclass iteration on error

When probing a device fails NULL pointer is returned, and following
devices in uclass list cannot be iterated. Skip to next device on error

UPSTREAM: dm: core: Do not stop uclass iteration on error

When probing a device fails NULL pointer is returned, and following
devices in uclass list cannot be iterated. Skip to next device on error
instead.

With that the only condition under which these simple iteration
functions return error is when the dm is not initialized at uclass_get
time. This is not all that interesting, change return type to void.

Fixes: 6494d708bf ("dm: Add base driver model support")
Change-Id: Ie327dc21db7ee80f9fc32e7913be2af71bb074a7
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
(cherry picked from commit f21954750aa8ed445ab83998bb099e366136c428)
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>

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UPSTREAM: dm: core: Switch uclass_*_device_err to use uclass_*_device_check

The _err variant iterators use the simple iterators without suffix as
basis.

However, there is no user that uclass_next_d

UPSTREAM: dm: core: Switch uclass_*_device_err to use uclass_*_device_check

The _err variant iterators use the simple iterators without suffix as
basis.

However, there is no user that uclass_next_device_err for iteration,
many users of uclass_first_device_err use it to get the first and
(assumed) only device of an uclass, and a couple that use
uclass_next_device_err to get the device following a known device in the
uclass list.

While there are some truly singleton device classes in which more than
one device cannot exist these are quite rare, and most classes can have
multiple devices even if it is not the case on the SoC's EVB.

In a later patch the simple iterators will be updated to not stop on
error and return next device instead. With this in many cases the code
that expects the first device or an error if it fails to probe may get
the next device instead. Use the _check iterators as the basis of _err
iterators to preserve the old behavior.

Change-Id: Ia4a249c906a12db0cda69d44097a4fd3682d2ed9
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
(cherry picked from commit e44d7e73fe0d649693d8d0a110cd7632bc919273)
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>

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UPSTREAM: dm: core: Add a function to find a device by drvdata

It is sometimes useful to find a device in a uclass using only its driver
data. The driver data often indicates the 'subtype' of the de

UPSTREAM: dm: core: Add a function to find a device by drvdata

It is sometimes useful to find a device in a uclass using only its driver
data. The driver data often indicates the 'subtype' of the device, e,g,
via its compatible string.

Add a function to handle this.

Change-Id: I6668a2a29c29346f57d3d975838459c0ac90fdea
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
(cherry picked from commit 50162348f0d3b915004733131acd81805e202c76)
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>

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UPSTREAM: dm: core: Allow iterating devices without uclass_get()

At present we have uclass_foreach_dev() which requires that uclass_get()
be called beforehand to find the uclass. This is good if we

UPSTREAM: dm: core: Allow iterating devices without uclass_get()

At present we have uclass_foreach_dev() which requires that uclass_get()
be called beforehand to find the uclass. This is good if we suspect that
that function might fail, but often we know that the uclass is available.

Add a new helper which does this uclass_get() automatically, so that only
the uclass ID is needed.

Change-Id: I3106b199653bf8a32d2d1a0025b77261881716fc
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
(cherry picked from commit 3cf0fba4ff862d833545f82fb2209ff3c79d17b5)
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>

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UPSTREAM: dm: uclass: Add uclass_foreach_dev_probe

Add uclass_foreach_dev_probe() which iterates through
devices of a given uclass. Devices are probed if necessary
and are ready to use.

Change-Id:

UPSTREAM: dm: uclass: Add uclass_foreach_dev_probe

Add uclass_foreach_dev_probe() which iterates through
devices of a given uclass. Devices are probed if necessary
and are ready to use.

Change-Id: Ia4561d234d8d4e8e55c3b1b318f411b8abce7627
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
(cherry picked from commit 37b596ac5c5f7ac405602af2577405b1f7d38cce)
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>

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UPSTREAM: dm: uclass: Add uclass_next_device_err() to return a valid device

Similarly to uclass_first_device_err(), add uclass_next_device_err()
which returns an error if there are no next devices i

UPSTREAM: dm: uclass: Add uclass_next_device_err() to return a valid device

Similarly to uclass_first_device_err(), add uclass_next_device_err()
which returns an error if there are no next devices in that uclass.

Change-Id: I44e34260045b15db3b19eeb0bbea725d80a956d2
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
(cherry picked from commit f6abd5389ceab5fce185126c2364a324465fafbe)
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>

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UPSTREAM: dm: Correct typos in uclass_first/next_device_check()

Correct typos in the comment block of uclass_first/next_device_check().

Change-Id: Id7091715ca2077d2dededcd578d891b3b8668fdb
Signed-o

UPSTREAM: dm: Correct typos in uclass_first/next_device_check()

Correct typos in the comment block of uclass_first/next_device_check().

Change-Id: Id7091715ca2077d2dededcd578d891b3b8668fdb
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
(cherry picked from commit d494131bc6a709a0fc0b12bf6a975af3de27a6e8)
Signed-off-by: Cody Xie <cody.xie@rock-chips.com>

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dm: core: add kernel dtb version 2 mechanism support

The V2 mechanism:
- both of U-Boot and kernel's *ALL* devices are exist in dm tree.
- put the necessary U-Boot devices in the head of device

dm: core: add kernel dtb version 2 mechanism support

The V2 mechanism:
- both of U-Boot and kernel's *ALL* devices are exist in dm tree.
- put the necessary U-Boot devices in the head of device uclass list.
- the both existence policy don't require phandle fixup any more.
- it is for the next generation(rk3588 ...) or necessary platforms.
- traverse u-boot fdt phandle if not found in kernel fdt, because
the U-Boot framework gets phandle by of_root(from fdt) but not dm_root(from dm).
The V1 mechanism(legacy):
- U-Boot: only some necessary U-Boot devices(storage, crypto...) in dm tree.
- kernel: all the devices(except the U-Boot only) in dm tree.

The commit (bd3ad955a3 scripts/dtc: phandle index start from 0x1000000) is
necessary for this v2 mechanism.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I0964f176a17725f9bb7c4e491373c278ed2bfcc5

show more ...

UPSTREAM: core: uclass: fix to u32 for phandle of fdt

The function has a little fix during upstream review, do fix to sync
with upstream.

Change-Id: I9e1c43a660b2f83395d1639aa962988ca04494e5
Signed

UPSTREAM: core: uclass: fix to u32 for phandle of fdt

The function has a little fix during upstream review, do fix to sync
with upstream.

Change-Id: I9e1c43a660b2f83395d1639aa962988ca04494e5
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>

show more ...

UPSTREAM: dm: core: Add a function to look up a uclass by name

Each uclass has a driver name which we can use to look up the uclass. This
is useful for logging, where the uclass ID is used as the ca

UPSTREAM: dm: core: Add a function to look up a uclass by name

Each uclass has a driver name which we can use to look up the uclass. This
is useful for logging, where the uclass ID is used as the category.

Add a function to handle this, as well as a test.

Change-Id: Id221809d6f9f818b52a5bf88f4e12d409a070f05
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
(cherry picked from commit 6e43d1b19982b1756b7c607569d1778e556d6577)

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core: add uclass_get_device_by_phandle_id() api

Add to api for who can not get phandle from a device property.

Change-Id: I8395f02d1731a4bbb00af1e4fa9d151830fc54b0
Signed-off-by: Kever Yang <kever.

core: add uclass_get_device_by_phandle_id() api

Add to api for who can not get phandle from a device property.

Change-Id: I8395f02d1731a4bbb00af1e4fa9d151830fc54b0
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

show more ...

Merge git://git.denx.de/u-boot-dm

dm: core: Add uclass_first/next_device_check()

Sometimes it is useful to iterate through all devices in a uclass and
skip over those which do not work correctly (e.g fail to probe). Add two
new func

dm: core: Add uclass_first/next_device_check()

Sometimes it is useful to iterate through all devices in a uclass and
skip over those which do not work correctly (e.g fail to probe). Add two
new functions to provide this feature.

The caller must check the return value each time to make sure that the
device is valid. But the device pointer is always returned.

Signed-off-by: Simon Glass <sjg@chromium.org>

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dm: core: Clarify uclass_first/next_device() comments

These are not as clear as they could be. Tidy them up a bit. Also fix a
tiny code-style nit.

Signed-off-by: Simon Glass <sjg@chromium.org>

dm: core: Add a way to find a device by ofnode

Add a function which looks up a device by its node (either in live tree
or flat tree).

Signed-off-by: Simon Glass <sjg@chromium.org>

Merge branch 'master' of git://git.denx.de/u-boot-x86

dm: core: Add a function to get a uclass name

It is useful in debug() statements to display the name of the uclass for a
device. Add a simple function to provide this.

Signed-off-by: Simon Glass <s

dm: core: Add a function to get a uclass name

It is useful in debug() statements to display the name of the uclass for a
device. Add a simple function to provide this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

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dm: core: Add a way to find a device by its driver

Some SoCs have a single clock device. Provide a way to find it given its
driver name. This is handled by the linker so will fail if the name is not

dm: core: Add a way to find a device by its driver

Some SoCs have a single clock device. Provide a way to find it given its
driver name. This is handled by the linker so will fail if the name is not
found, avoiding strange errors when names change and do not match. It is
also faster than a string comparison.

Signed-off-by: Simon Glass <sjg@chromium.org>

show more ...

Merge git://git.denx.de/u-boot-dm

dm: core: Add uclass_first_device_err() to return a valid device

A common pattern is to call uclass_first_device() and then check if it
actually returns a device. Add a new function which does this,

dm: core: Add uclass_first_device_err() to return a valid device

A common pattern is to call uclass_first_device() and then check if it
actually returns a device. Add a new function which does this, returning
an error if there are no devices in that uclass.

Signed-off-by: Simon Glass <sjg@chromium.org>

show more ...

dm: core: Add safe device iteration macros

Add iteration macros which support unbinding a device within the loop.

Signed-off-by: Simon Glass <sjg@chromium.org>

Merge git://git.denx.de/u-boot-dm

dm: simplify uclass_foreach_dev() implementation

This can be simply written with list_for_each_entry(), maybe
this macro was not necessary in the first place.

Signed-off-by: Masahiro Yamada <yamada

dm: simplify uclass_foreach_dev() implementation

This can be simply written with list_for_each_entry(), maybe
this macro was not necessary in the first place.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>

show more ...

Merge git://git.denx.de/u-boot-dm

dm: core: Fix a typo in the uclass_get_device_by_name() comment

This function comment has a typo. Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>