u-boot.git/include/dm/device.h, branch v2021.01

dm: Use driver_info index instead of pointer

2020-10-29T20:42:18+00:00

At present we use a 'node' pointer in the of-platadata phandle_n_arg
structs. This is a pointer to the struct driver_info for a particular
device, and we can use it to obtain the struct udevice pointer itself.

Since we don't know the struct udevice pointer until it is allocated in
memory, we have to fix up the phandle_n_arg.node at runtime. This is
annoying since it requires that SPL's data is writable and adds a small
amount of extra (generated) code in the dm_populate_phandle_data()
function.

Now that we can find a driver_info by its index, it is easier to put the
index in the phandle_n_arg structures.

Update dtoc to do this, add a new device_get_by_driver_info_idx() to look
up a device by drive_info index and update the tests to match.

Signed-off-by: Simon Glass

dm: core: fix typo in device.h

2020-10-29T20:42:18+00:00

Replace 'a the' with 'the' in include/dm/device.h.

Signed-off-by: Dario Binacchi 
Reviewed-by: Simon Glass

core: improve of_match_ptr with OF_PLATDATA

2020-09-22T18:50:43+00:00

Currently of_match_ptr is used to avoid referencing compatible strings
when OF_CONTROL is not enabled. This behaviour could be improved by
taking into account also OF_PLATDATA, as when this configuration is
enabled the compatible strings are not used at all.

Signed-off-by: Walter Lozano 
Reviewed-by: Simon Glass

pci: Avoid a crash in device_is_on_pci_bus()

2020-07-17T06:32:24+00:00

This function cannot currently be called on the root node. Add a check
for this as well as a test.

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

core: extend struct driver_info to point to device

2020-07-10T04:00:29+00:00

Currently when creating an U_BOOT_DEVICE entry a struct driver_info
is declared, which contains the data needed to instantiate the device.
However, the actual device is created at runtime and there is no proper
way to get the device based on its struct driver_info.

This patch extends struct driver_info adding a pointer to udevice which
is populated during the bind process, allowing to generate a set of
functions to get the device based on its struct driver_info.

Signed-off-by: Walter Lozano 
Reviewed-by: Simon Glass

core: add support for U_BOOT_DRIVER_ALIAS

2020-07-10T00:57:22+00:00

Currently when using OF_PLATDATA the binding between devices and drivers
is done trying to match the compatible string in the node with a driver
name. However, usually a single driver supports multiple compatible strings
which causes that only devices which its compatible string matches a
driver name get bound.

To overcome this issue, this patch adds the U_BOOT_DRIVER_ALIAS macro,
which generates no code at all, but allows an easy way to declare driver
name aliases. Thanks to this, dtoc could be improve to look for the driver
name based on its alias when it populates the U_BOOT_DEVICE entry.

Signed-off-by: Walter Lozano 
Reviewed-by: Simon Glass

Merge tag 'dm-pull-10apr20-take2' of git://git.denx.de/u-boot-dm

2020-04-16T17:45:03+00:00

Functions for reading indexed values from device tree
Enhancements to 'dm' command
Log test enhancements and syslog driver
DM change to read parent ofdata before children
Minor fixes

dm: core: Add a way to skip powering down power domains

2020-04-16T14:07:58+00:00

When removing a device the power domains it uses are generally powered
off. But when we are trying to unbind all devices (e.g. for running tests)
we don't want to probe a device in the 'remove' path.

Add a new flag to skip this power-down step.

Signed-off-by: Simon Glass

dm: core: Add basic ACPI support

2020-04-16T06:36:28+00:00

ACPI (Advanced Configuration and Power Interface) is a standard for
specifying information about a platform. It is a little like device
tree but the bindings are part of the specification and it supports an
interpreted bytecode language.

Driver model does not use ACPI for U-Boot's configuration, but it is
convenient to have it support generation of ACPI tables for passing to
Linux, etc.

As a starting point, add an optional set of ACPI operations to each
device. Initially only a single operation is available, to obtain the
ACPI name for the device. More operations are added later.

Enable ACPI for sandbox to ensure build coverage and so that we can add
tests.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng 
Reviewed-by: Wolfgang Wallner 
Reviewed-by: Andy Shevchenko

dm: core: Add a flag for power domain control on device removal

2020-03-03T02:47:38+00:00

In various cases a power domain must stay enabled after device
removal when booting OS (i.e. serial debug console or display).
Add a flag to selectively skip switching off a power domain.

Fixes: 52edfed65de9 ("dm: core: device: switch off power domain after device removal")
Signed-off-by: Anatolij Gustschin 
Acked-by: Neil Armstrong 
Tested-by: Guillaume La Roque 
Reviewed-by: Simon Glass