Add tracepoints to the Qualcomm GENI (Generic Interface) SPI driver.
These trace events enable runtime debugging and performance analysis
of SPI operations.
The trace events capture SPI clock configuration, FIFO parameters,
transfer details, interrupt status.
Usage examples:
Enable all SPI traces:
echo 1 > /sys/kernel/tracing/events/spi/enable
echo 1 > /sys/kernel/debug/tracing/events/qcom_geni_spi/enable
cat /sys/kernel/debug/tracing/trace_pipe
Example trace output:
1003.956560: spi_message_submit: spi16.0 000000001b20b93c
1003.956642: spi_controller_busy: spi16
1003.956643: spi_message_start: spi16.0 000000001b20b93c
1003.956646: geni_spi_fifo_params: 888000.spi: cs=0 mode=0x00000020
mode_changed=0x00000007 cs_changed=0
1003.956647: spi_set_cs: spi16.0 activate
1003.956648: spi_transfer_start: spi16.0 00000000ea1cf8b6 len=16
tx=[4c-80-e4-ca-68-4d-95-aa-ee-99-ae-d7-69-e9-5f-39]
rx=[00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00]
1003.956653: geni_spi_clk_cfg: 888000.spi: req_hz=20000000
sclk_hz=100000000 clk_idx=5 clk_div=5 bpw=8
1003.956691: geni_spi_transfer: 888000.spi: len=16 m_cmd=0x00000003
1003.956708: geni_spi_irq: 888000.spi: m_irq=0x08000081
dma_tx=0x00000000 dma_rx=0x00000000
1003.956717: spi_transfer_stop: spi16.0 00000000ea1cf8b6 len=16
tx=[4c-80-e4-ca-68-4d-95-aa-ee-99-ae-d7-69-e9-5f-39]
rx=[4c-80-e4-ca-68-4d-95-aa-ee-99-ae-d7-69-e9-5f-39]
1003.956717: spi_set_cs: spi16.0 deactivate
1003.956718: spi_message_done: spi16.0 000000001b20b93c len=16/16
Signed-off-by: Praveen Talari <[email protected]>
---
Changes in v2:
- Removed tx/rx data capture since spi core had already support.
- Updated commit text in patches and cover letter.
- Link to v1:
https://lore.kernel.org/r/20260506-add-tracepoints-for-qcom-geni-spi-v1-0-c957cfe71...@oss.qualcomm.com
---
Praveen Talari (2):
spi: qcom-geni: trace: Add trace events for Qualcomm GENI SPI
spi: qcom-geni: Add trace events for Qualcomm GENI SPI driver
drivers/spi/spi-geni-qcom.c | 13 +++++
include/trace/events/qcom_geni_spi.h | 103 +++++++++++++++++++++++++++++++++++
2 files changed, 116 insertions(+)
---
base-commit: 1f5ffc672165ff851063a5fd044b727ab2517ae3
change-id: 20260506-add-tracepoints-for-qcom-geni-spi-e31457c2267c
Best regards,
--
Praveen Talari <[email protected]>
