spi: qcom-geni: add GENI SE registers trace event on error paths

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The GENI SPI driver reports various transfer failures such as command
timeouts, DMA reset timeouts, DMA transaction errors, and unexpected
interrupt conditions. However, diagnosing the root cause of these
failures is difficult as the hardware state is not captured when the
error occurs.

Add trace_geni_se_regs() calls at critical SPI error handling paths to
automatically capture GENI serial engine debug registers when failures
are detected. This includes:

- M_CMD abort/cancel timeout
- DMA TX/RX FSM reset timeout
- DMA transaction failures and pending residue conditions
- Unexpected interrupt error status
- Premature transfer completion with pending TX/RX data

Dumping the SE debug registers at the time of failure provides
additional hardware context and significantly improves post-mortem
analysis of SPI transfer issues without affecting normal operation.

Acked-by: Mukesh Kumar Savaliya <mukesh.savaliya@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
Link: https://patch.msgid.link/20260729-add-tracepoints-for-se-reg-dump-v4-2-08bbd63b0ed2@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Praveen Talari 2026-07-29 20:43:26 +05:30 • committed by Mark Brown

parent f40e7ab049

commit 607b41c1e0

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drivers/spi/spi-geni-qcom.c

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