linux-toradex.git/include/linux/interconnect-provider.h, branch v6.0-rc1

Merge branch 'icc-syncstate' into icc-next

2020-09-18T06:13:40+00:00

* icc-syncstate:
  interconnect: Add get_bw() callback
  interconnect: Add sync state support
  interconnect: qcom: Use icc_sync_state

Signed-off-by: Georgi Djakov

interconnect: Add sync state support

2020-09-18T05:56:52+00:00

The bootloaders often do some initial configuration of the interconnects
in the system and we want to keep this configuration until all consumers
have probed and expressed their bandwidth needs. This is because we don't
want to change the configuration by starting to disable unused paths until
every user had a chance to request the amount of bandwidth it needs.

To accomplish this we will implement an interconnect specific sync_state
callback which will synchronize (aggregate and set) the current bandwidth
settings when all consumers have been probed.

Link: https://lore.kernel.org/r/20200825170152.6434-3-georgi.djakov@linaro.org
Reviewed-by: Saravana Kannan 
Signed-off-by: Georgi Djakov

interconnect: Add get_bw() callback

2020-09-18T05:53:37+00:00

The interconnect controller hardware may support querying the current
bandwidth settings, so add a callback for providers to implement this
functionality if supported.

Link: https://lore.kernel.org/r/20200825170152.6434-2-georgi.djakov@linaro.org
Reviewed-by: Saravana Kannan 
Signed-off-by: Georgi Djakov

interconnect: Introduce xlate_extended() callback

2020-09-08T13:28:58+00:00

Currently there is the xlate() callback, which is used by providers for
mapping the nodes from phandle arguments. That's fine for simple mappings,
but the phandle arguments could contain an additional data, such as tag
information. Let's create another callback xlate_extended() for the cases
where providers want also populate the path tag data.

Tested-by: Sibi Sankar 
Reviewed-by: Sibi Sankar 
Reviewed-by: Matthias Kaehlcke 
Tested-by: Matthias Kaehlcke 
Link: https://lore.kernel.org/r/20200903133134.17201-2-georgi.djakov@linaro.org
Signed-off-by: Georgi Djakov

interconnect: Mark all dummy functions as static inline

2020-06-16T13:43:23+00:00

There are a few dummy stub functions that are not marked as static inline
yet. Currently this header file is not included in any other file outside
of drivers/interconnect/, but that might not be the case in the future.
If this file gets included and the framework is disabled, we will be see
warnings. Let's fix this in advance.

Link: https://lore.kernel.org/r/20200228145945.13579-1-georgi.djakov@linaro.org
Signed-off-by: Georgi Djakov

interconnect: Allow inter-provider pairs to be configured

2020-06-16T13:38:43+00:00

This patch adds support for a new boolean 'inter_set' field in struct
icc_provider. Setting it to 'true' enables calling '->set' for
inter-provider node pairs. All existing users of the interconnect
framework allocate this structure with kzalloc, and are therefore
unaffected by this change.

This makes it easier for hierarchies like exynos-bus, where every bus
is probed separately and registers a separate interconnect provider, to
model constraints between buses.

Signed-off-by: Artur Świgoń 
Signed-off-by: Sylwester Nawrocki 
Acked-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20200521122841.8867-4-s.nawrocki@samsung.com
Signed-off-by: Georgi Djakov

interconnect: Export of_icc_get_from_provider()

2020-06-16T13:38:17+00:00

This patch makes the above function public (for use in exynos-bus devfreq
driver).

Signed-off-by: Artur Świgoń 
Reviewed-by: Krzysztof Kozlowski 
Reviewed-by: Chanwoo Choi 
Signed-off-by: Sylwester Nawrocki 
Link: https://lore.kernel.org/r/20200521122841.8867-2-s.nawrocki@samsung.com
Signed-off-by: Georgi Djakov

interconnect: Add a common standard aggregate function

2019-12-16T07:25:24+00:00

Currently there is one very standard aggregation method that is used by
several drivers. Let's add this as a common function, so that drivers
could just point to it, instead of copy/pasting code.

Suggested-by: Evan Green 
Reviewed-by: Brian Masney 
Reviewed-by: Bjorn Andersson 
Reviewed-by: Evan Green 
Signed-off-by: Georgi Djakov

interconnect: Add a common helper for removing all nodes

2019-12-16T07:25:22+00:00

The removal of all nodes from a provider seem to be a common functionality
for all existing users and it would make sense to factor out this into a
a common helper function.

Suggested-by: Dmitry Osipenko 
Reviewed-by: Bjorn Andersson 
Signed-off-by: Georgi Djakov

interconnect: Add pre_aggregate() callback

2019-08-13T20:02:48+00:00

Introduce an optional callback in interconnect provider drivers. It can be
used for implementing actions, that need to be executed before the actual
aggregation of the bandwidth requests has started.

The benefit of this for now is that it will significantly simplify the code
in provider drivers.

Suggested-by: Evan Green 
Reviewed-by: Evan Green 
Signed-off-by: Georgi Djakov