linux.git/drivers/interconnect, branch v6.6

Merge branch 'icc-debugfs' into icc-next

2023-08-22T18:05:09+00:00

This series introduces interconnect debugfs files that support voting
for any interconnect path the framework supports. It is useful for debug,
test and verification.

* icc-debugfs
  debugfs: Add write support to debugfs_create_str()
  interconnect: Reintroduce icc_get()
  interconnect: Add debugfs test client

Link: https://lore.kernel.org/r/20230807142914.12480-1-quic_mdtipton@quicinc.com
Signed-off-by: Georgi Djakov

interconnect: Add debugfs test client

2023-08-22T18:04:50+00:00

It's often useful during test, debug, and development to issue path
votes from shell. Add a debugfs client for this purpose.

Example usage:
	cd /sys/kernel/debug/interconnect/test-client/

	# Configure node endpoints for the path from CPU to DDR on
	# qcom/sm8550.
	echo chm_apps > src_node
	echo ebi > dst_node

	# Get path between src_node and dst_node. This is only
	# necessary after updating the node endpoints.
	echo 1 > get

	# Set desired BW to 1GBps avg and 2GBps peak.
	echo 1000000 > avg_bw
	echo 2000000 > peak_bw

	# Vote for avg_bw and peak_bw on the latest path from "get".
	# Voting for multiple paths is possible by repeating this
	# process for different nodes endpoints.
	echo 1 > commit

Allowing userspace to directly enable and set bus rates can be dangerous
So, following in the footsteps of the regmap [0] and clk [1] frameworks,
keep these userspace controls compile-time disabled without Kconfig
options to enable them. Enabling this will require code changes to
define INTERCONNECT_ALLOW_WRITE_DEBUGFS.

[0] commit 09c6ecd39410 ("regmap: Add support for writing to regmap registers via debugfs")
[1] commit 37215da5553e ("clk: Add support for setting clk_rate via debugfs")

Signed-off-by: Mike Tipton 
Link: https://lore.kernel.org/r/20230807142914.12480-4-quic_mdtipton@quicinc.com
Signed-off-by: Georgi Djakov

interconnect: Reintroduce icc_get()

2023-08-22T18:04:37+00:00

The original icc_get() that took integer node IDs was removed due to
lack of users. Reintroduce a new version that takes string node names,
which is needed for the debugfs client.

Signed-off-by: Mike Tipton 
Link: https://lore.kernel.org/r/20230807142914.12480-3-quic_mdtipton@quicinc.com
Signed-off-by: Georgi Djakov

interconnect: qcom: icc-rpmh: Retire DEFINE_QBCM

2023-08-22T12:07:33+00:00

This helper has no users anymore. Kill it with heavy fire.

Signed-off-by: Konrad Dybcio 
Reviewed-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20230811-topic-icc_retire_macrosd-v1-20-c03aaeffc769@linaro.org
Signed-off-by: Georgi Djakov

interconnect: qcom: sm8350: Retire DEFINE_QBCM

2023-08-22T12:07:30+00:00

The struct definition macros are hard to read and compare, expand them.

Signed-off-by: Konrad Dybcio 
Reviewed-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20230811-topic-icc_retire_macrosd-v1-19-c03aaeffc769@linaro.org
Signed-off-by: Georgi Djakov

interconnect: qcom: sm8250: Retire DEFINE_QBCM

2023-08-22T12:07:28+00:00

The struct definition macros are hard to read and compare, expand them.

Signed-off-by: Konrad Dybcio 
Reviewed-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20230811-topic-icc_retire_macrosd-v1-18-c03aaeffc769@linaro.org
Signed-off-by: Georgi Djakov

interconnect: qcom: sm8150: Retire DEFINE_QBCM

2023-08-22T12:07:25+00:00

The struct definition macros are hard to read and compare, expand them.

Signed-off-by: Konrad Dybcio 
Reviewed-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20230811-topic-icc_retire_macrosd-v1-17-c03aaeffc769@linaro.org
Signed-off-by: Georgi Djakov

interconnect: qcom: sm6350: Retire DEFINE_QBCM

2023-08-22T12:07:23+00:00

The struct definition macros are hard to read and compare, expand them.

Signed-off-by: Konrad Dybcio 
Reviewed-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20230811-topic-icc_retire_macrosd-v1-16-c03aaeffc769@linaro.org
Signed-off-by: Georgi Djakov

interconnect: qcom: sdx65: Retire DEFINE_QBCM

2023-08-22T12:07:20+00:00

The struct definition macros are hard to read and compare, expand them.

Signed-off-by: Konrad Dybcio 
Reviewed-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20230811-topic-icc_retire_macrosd-v1-15-c03aaeffc769@linaro.org
Signed-off-by: Georgi Djakov

interconnect: qcom: sdx55: Retire DEFINE_QBCM

2023-08-22T12:07:16+00:00

The struct definition macros are hard to read and compare, expand them.

Signed-off-by: Konrad Dybcio 
Reviewed-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20230811-topic-icc_retire_macrosd-v1-14-c03aaeffc769@linaro.org
Signed-off-by: Georgi Djakov