linux-kernel - [PATCH 0/3] firmware: samsung: add ACPM debugfs support

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Message-Id: <20250224-acpm-debugfs-v1-0-2418a3ea1b17@linaro.org>
Date: Mon, 24 Feb 2025 08:01:21 +0000
From: Tudor Ambarus <tudor.ambarus@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>, 
 Alim Akhtar <alim.akhtar@...sung.com>
Cc: andre.draszik@...aro.org, peter.griffin@...aro.org, 
 willmcvicker@...gle.com, kernel-team@...roid.com, 
 linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Tudor Ambarus <tudor.ambarus@...aro.org>
Subject: [PATCH 0/3] firmware: samsung: add ACPM debugfs support

The ACPM firmware saves debug information to SRAM. Add debugfs entries
in order to expose the ACPM logs.

acpm_framework/logb_gprio_level controls the ACPM print verbosity to
the SRAM log buffer. It encodes a 64 bit value, 4 bits for each of the
16 Plugin IDs, with verbosity levels from 0xf (log error) to
0x0 (log debug).

acpm_framework/log_level has a maximum value of 2 and controls which
SRAM log buffers are printed.

Finally, acpm_framework/acpm_debug_cmd provides a way to issue
ACPM DEBUG commands to the firmware.

Add ACPM debugfs support with the above capabilities.

Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
---
Tudor Ambarus (3):
      firmware: exynos-acpm: rename exynos-acpm.h to exynos-acpm-xfer.h
      firmware: exynos-acpm: move common structures to exynos-acpm.h
      firmware: samsung: add ACPM debugfs support

 drivers/firmware/samsung/Makefile              |   1 +
 drivers/firmware/samsung/exynos-acpm-debugfs.c | 359 +++++++++++++++++++++++++
 drivers/firmware/samsung/exynos-acpm-pmic.c    |   2 +-
 drivers/firmware/samsung/exynos-acpm-xfer.h    |  23 ++
 drivers/firmware/samsung/exynos-acpm.c         |  61 ++---
 drivers/firmware/samsung/exynos-acpm.h         |  95 ++++++-
 6 files changed, 485 insertions(+), 56 deletions(-)
---
base-commit: f4d315a1f9d8fcaf608f283f01ce4d66160f44a1
change-id: 20250221-acpm-debugfs-d196d08e6462

Best regards,
-- 
Tudor Ambarus <tudor.ambarus@...aro.org>