linux.git/drivers/interconnect, branch v5.4-rc2

drivers: qcom: Add BCM vote macro to header

2019-08-20T07:09:56+00:00

The macro to generate a Bus Controller Manager (BCM) TCS command is used
by the interconnect driver but might also be interesting to other
drivers that need to construct TCS commands for sub processors so move
it out of the sdm845 specific file and into the header.

Signed-off-by: Jordan Crouse 
Acked-by: Stephen Boyd 
Acked-by: Bjorn Andersson 
Signed-off-by: Georgi Djakov

interconnect: qcom: remove COMPILE_TEST from CONFIG_INTERCONNECT_QCOM_QCS404

2019-08-15T08:19:12+00:00

There is one compilation error when CONFIG_INTERCONNECT_QCOM_QCS404=y and
CONFIG_INTERCONNECT_QCOM_SMD_RPM=y, as well as CONFIG_COMPILE_TEST=y,
but CONFIG_QCOM_SMD_RPM is not set, logs as below:

drivers/interconnect/qcom/smd-rpm.o: In function `qcom_icc_rpm_smd_send':
smd-rpm.c:(.text+0xe4): undefined reference to `qcom_rpm_smd_write'
Makefile:1071: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1

This is because
INTERCONNECT_QCOM_QCS404 depends on QCOM_SMD_RPM || COMPILE_TEST.
Here CONFIG_COMPILE_TEST=y, so CONFIG_INTERCONNECT_QCOM_SMD_RPM
is selected. If CONFIG_QCOM_SMD_RPM is not set, then
qcom_rpm_smd_write() is not defined, and compilation error happen.
Fix this by removing COMPILE_TEST from CONFIG_INTERCONNECT_QCOM_QCS404.

Fixes: 5e4e6c4d3ae0 ("interconnect: qcom: Add QCS404 interconnect provider driver")
Signed-off-by: Mao Wenan 
Signed-off-by: Georgi Djakov

interconnect: qcom: Add QCS404 interconnect provider driver

2019-08-13T20:26:08+00:00

Add driver for the interconnect buses found in Qualcomm QCS404-based
platforms. The topology consists of three NoCs that are controlled by
a remote processor. This remote processor collects the aggregated
bandwidth for each master-slave pairs.

Signed-off-by: Bjorn Andersson 
Signed-off-by: Georgi Djakov

interconnect: qcom: Add interconnect RPM over SMD driver

2019-08-13T20:06:40+00:00

On some Qualcomm SoCs, there is a remote processor, which controls some of
the Network-On-Chip interconnect resources. Other CPUs express their needs
by communicating with this processor. Add a driver to handle communication
with this remote processor.

Reviewed-by: Bjorn Andersson 
Signed-off-by: Georgi Djakov

interconnect: qcom: Add tagging and wake/sleep support for sdm845

2019-08-13T20:02:57+00:00

Add support for wake and sleep commands by using a tag to indicate
whether or not the aggregate and set requests fall into execution
state specific bucket.

Signed-off-by: David Dai 
Reviewed-by: Evan Green 
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

interconnect: Add support for path tags

2019-08-13T20:02:44+00:00

Consumers may have use cases with different bandwidth requirements based
on the system or driver state. The consumer driver can append a specific
tag to the path and pass this information to the interconnect platform
driver to do the aggregation based on this state.

Introduce icc_set_tag() function that will allow the consumers to append
an optional tag to each path. The aggregation of these tagged paths is
platform specific.

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

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

interconnect: convert to DEFINE_SHOW_ATTRIBUTE

2019-04-06T15:03:03+00:00

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li 
Signed-off-by: Georgi Djakov

interconnect: Revert to previous config if any request fails

2019-01-22T12:37:25+00:00

When consumers report their bandwidth needs with icc_set_bw(), it's
possible that the requested amount of bandwidth is not available or just
the new configuration fails to apply on some path. In this case revert to
the previous configuration and propagate the error back to the consumers
to let them know that bandwidth is not available, hardware is busy or
whatever error is returned by the interconnect platform driver.

Signed-off-by: Georgi Djakov 
Signed-off-by: Greg Kroah-Hartman