kernel/git/stable/linux.git/drivers/mfd/sec-acpm.c, branch linux-7.2.y

Replace by more specific (c files)

2026-07-03T05:38:17+00:00

Replace the #include of by the more specific where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich Acked-by: Takashi Sakamoto Acked-by: Bjorn Helgaas Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub)

firmware: samsung: acpm: Make acpm_ops const and access via pointer

2026-05-29T14:02:21+00:00

Replace the embedded `struct acpm_ops` inside `struct acpm_handle` with a pointer to a `const struct acpm_ops`. Previously, the operations structure was embedded directly within the handle and populated dynamically at runtime via `acpm_setup_ops()`. This resulted in mutable function pointers and unnecessary per-instance memory overhead. By defining `exynos_acpm_driver_ops` statically as a `const` structure, the function pointers are now safely housed in the read-only `.rodata` section. This improves security by preventing function pointer overwrites, saves memory, and slightly reduces initialization overhead in `acpm_probe()`. Consequently, update all consumer drivers (clk, mfd) to access the operations via the new pointer indirection (`->ops->`). Finally, fix the previously empty kernel-doc description for the ops member to reflect its new pointer nature. Signed-off-by: Tudor Ambarus Reviewed-by: Peter Griffin Link: https://patch.msgid.link/20260515-acpm-tmu-helpers-v2-4-8ca011d5a965@linaro.org Signed-off-by: Krzysztof Kozlowski

firmware: samsung: acpm: Drop redundant _ops suffix in acpm_ops members

2026-05-29T14:02:21+00:00

Rename the `dvfs_ops` and `pmic_ops` members of `struct acpm_ops` to `dvfs` and `pmic` respectively. Since these members are housed within the `acpm_ops` structure and utilize the `acpm_*_ops` types, the `_ops` suffix on the variable names creates unnecessary redundancy (e.g., `handle.ops.dvfs_ops`). This cleanup removes the stuttering, leading to cleaner consumer code. Signed-off-by: Tudor Ambarus Reviewed-by: Peter Griffin Acked-by: Lee Jones Link: https://lore.kernel.org/linux-samsung-soc/CADrjBPqzKpcd9vuCmNUptCUPyPpPbHcc19-7kN-1c0RpW1e5DQ@mail.gmail.com/T/#mcce154a7e0c6cd1ca6cd5a1e37541ed7a85a84d4 [1] Link: https://patch.msgid.link/20260515-acpm-tmu-helpers-v2-3-8ca011d5a965@linaro.org Signed-off-by: Krzysztof Kozlowski

firmware: exynos-acpm: Drop fake 'const' on handle pointer

2026-02-28T14:47:03+00:00

All the functions operating on the 'handle' pointer are claiming it is a pointer to const thus they should not modify the handle. In fact that's a false statement, because first thing these functions do is drop the cast to const with container_of: struct acpm_info *acpm = handle_to_acpm_info(handle); And with such cast the handle is easily writable with simple: acpm->handle.ops.pmic_ops.read_reg = NULL; The code is not correct logically, either, because functions like acpm_get_by_node() and acpm_handle_put() are meant to modify the handle reference counting, thus they must modify the handle. Modification here happens anyway, even if the reference counting is stored in the container which the handle is part of. The code does not have actual visible bug, but incorrect 'const' annotations could lead to incorrect compiler decisions. Fixes: a88927b534ba ("firmware: add Exynos ACPM protocol driver") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20260224104203.42950-2-krzysztof.kozlowski@oss.qualcomm.com Signed-off-by: Krzysztof Kozlowski

mfd: sec: Add support for S2MPG11 PMIC via ACPM

2026-02-04T10:37:29+00:00

Add support for Samsung's S2MPG11 PMIC, which is a Power Management IC for mobile applications with buck converters, various LDOs, power meters, NTC thermistor inputs, and additional GPIO interfaces. It typically complements an S2MPG10 PMIC in a main/sub configuration as the sub-PMIC. Like S2MPG10, communication is not via I2C, but via the Samsung ACPM firmware. While at it, we can also switch to asynchronous probe, which helps with probe performance, as the drivers for s2mpg10 and s2mpg11 can probe in parallel. Note: The firmware uses the ACPM channel ID and the Speedy channel ID to select the PMIC address. Since these are firmware properties, they can not be retrieved from DT, but instead are deducted from the compatible for now. Signed-off-by: André Draszik Link: https://patch.msgid.link/20260122-s2mpg1x-regulators-v7-9-3b1f9831fffd@linaro.org Signed-off-by: Lee Jones

mfd: sec: Use chained IRQs for s2mpg10

2025-11-20T10:29:20+00:00

On S2MPG10 (and similar like S2MPG11), top-level interrupt status and mask registers exist which need to be unmasked to get the PMIC interrupts. This additional status doesn't seem to exist on other PMICs in the S2MP* family, and the S2MPG10 driver is manually dealing with masking and unmasking currently. The correct approach here is to register this hierarchy as chained interrupts, though, without any additional manual steps. Doing so will also simplify addition of other, similar, PMICs (like S2MPG11) in the future. Update the driver to do just that. Signed-off-by: André Draszik Link: https://patch.msgid.link/20251114-s2mpg10-chained-irq-v1-1-34ddfa49c4cd@linaro.org Signed-off-by: Lee Jones

mfd: sec: Add support for S2MPG10 PMIC

2025-05-23T07:48:27+00:00

Add support for Samsung's S2MPG10 PMIC, which is a Power Management IC for mobile applications with buck converters, various LDOs, power meters, RTC, clock outputs, and additional GPIOs interfaces. Contrary to existing Samsung S2M series PMICs supported, communication is not via I2C, but via the Samsung ACPM firmware. This commit adds the core driver. Signed-off-by: André Draszik Link: https://lore.kernel.org/r/20250409-s2mpg10-v4-9-d66d5f39b6bf@linaro.org Signed-off-by: Lee Jones