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[v1,0/3] coresight: Add reserve trace id support

Message ID 20240516025644.4383-1-quic_jinlmao@quicinc.com (mailing list archive)
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Series coresight: Add reserve trace id support | expand

Message

Mao Jinlong May 16, 2024, 2:56 a.m. UTC 
Some HW has static trace id which cannot be changed via software programming.
For this case, configure the trace id in device tree with
"trace-id = <xxx>", and call coresight_trace_id_reserve_system_id in
device probe function. The id will be reserved for the HW all the time
if the device is probed.

Mao Jinlong (3):
  dt-bindings: arm: Add trace-id for coresight dummy source
  coresight: Add reserve trace id support
  coresight: dummy: Add reserve atid support for dummy source

 .../sysfs-bus-coresight-devices-dummy-source  | 15 +++++
 .../arm/arm,coresight-dummy-source.yaml       |  6 ++
 drivers/hwtracing/coresight/coresight-dummy.c | 56 +++++++++++++++++--
 .../hwtracing/coresight/coresight-platform.c  | 26 +++++++++
 .../hwtracing/coresight/coresight-trace-id.c  | 24 ++++++++
 .../hwtracing/coresight/coresight-trace-id.h  | 11 ++++
 include/linux/coresight.h                     |  1 +
 7 files changed, 135 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-dummy-source