u-boot.git/drivers/core/uclass.c, branch v2021.04

common: Drop asm/global_data.h from common header

2021-02-02T20:33:42+00:00

Move this out of the common header and include it only where needed.  In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly.   Finally, we have a few
cases where we did not need to include  at all, so
remove that include.

Signed-off-by: Simon Glass 
Signed-off-by: Tom Rini

dm: core: add function uclass_probe_all() to probe all devices

2021-01-16T19:49:09+00:00

Support a common method to probe all devices associated with uclass.

This includes data structures and code for finding the first device and
looping for remaining devices associated with uclasses (groups of devices
with the same purpose, e.g. all SERIAL ports will be in the same uclass).

An example is SBSA compliant PL011 UART IP, where firmware does the serial
port initialization and prepare uart device to let the kernel use it for
sending and reveiving the characters.SERIAL uclass will use this function
to initialize PL011 UART ports.

The feature is enabled with CONFIG_DM.

Signed-off-by: Vabhav Sharma 
Reviewed-by: Stefan Roese 
Reviewed-by: Simon Glass 
Reviewed-by: Sean Anderson

dm: core: Allow the uclass list to move

2021-01-05T19:24:41+00:00

At present the uclass list head is in global_data. This is convenient
but with the new of-platdata we need the list head to be declared by
the generated code.

Change this over to be a pointer. Provide a 'static' version in
global_data to retain the current behaviour.

Signed-off-by: Simon Glass

dm: core: Rename sqq to seq_

2021-01-05T19:24:41+00:00

Now that the sequence-numbering migration is complete, rename this member
back to seq_, adding an underscore to indicate it is internal to driver
model.

Signed-off-by: Simon Glass 
Reviewed-by: Andy Shevchenko

dm: core: Rename the priv/plat members

2021-01-05T19:24:40+00:00

These are supposed to be private to driver model, not accessed by any code
outside. Add a trailing underscore to indicate this.

Signed-off-by: Simon Glass

dm: core: Use access methods for dev/uclass private data

2021-01-05T19:24:40+00:00

Use these functions in the core code as much as possible. With this, there
are only two places where each priv/plat pointer is accessed, one for read
and one for write.

Signed-off-by: Simon Glass

dm: core: Add function to access uclass priv

2021-01-05T19:24:40+00:00

Add functions so this information is not accessed directly. This will be
needed for of-platdata which stores it in a different place.

Signed-off-by: Simon Glass

dm: core: Update uclass_find_next_free_req_seq() for new scheme

2020-12-19T03:32:21+00:00

This function current deals with req_seq which is deprecated. Update it to
use the new sequence numbers, putting them above existing aliases. Rename
the function to make this clear.

Signed-off-by: Simon Glass

dm: Drop the unused arg in uclass_find_device_by_seq()

2020-12-19T03:32:21+00:00

Now that there is only one sequence number (rather than both requested and
assigned ones) we can simplify this function. Also update its caller to
simplify the logic.

Signed-off-by: Simon Glass

dm: Drop uclass_resolve_seq()

2020-12-19T03:32:21+00:00

This function is not needed anymore. Drop it.

Signed-off-by: Simon Glass