linux-stable.git/drivers/mfd/sec-core.c, branch master

mfd: sec: Merge separate core and irq modules

2025-05-23T07:48:34+00:00

There is no reason to have these two kernel modules separate. Having
them merged into one kernel module also slightly reduces memory
consumption and module load times a little.

mapped size (lsmod):
         before:             after:
    sec_core   20480    sec_core   24576
    sec_irq    16384
    ----------------
    total      36864

Section sizes (size -A):
         before:             after:
    sec_core    6780    sec_core   13239
    sec_irq     8046
    ----------------
    Total      14826

Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: André Draszik 
Link: https://lore.kernel.org/r/20250409-s2mpg10-v4-10-d66d5f39b6bf@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

mfd: sec: Split into core and transport (i2c) drivers

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

As a preparation for adding support for Samsung's S2MPG10, which is
connected via SPEEDY / ACPM rather than I2C, split out (move) all
I2C-specific driver code into its own kernel module, sec-i2c, and
make the existing sec-core module be just the transport-agnostic core
driver kernel module.

At the same time, update all defconfigs that reference the old kconfig
symbol name.

While at it, also update file header comments and module description(s)
to drop references to 'mfd', and update comments to be C-style, not
C++.

Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: André Draszik 
Link: https://lore.kernel.org/r/20250409-s2mpg10-v4-8-d66d5f39b6bf@linaro.org
Signed-off-by: Lee Jones

mfd: sec: Move private internal API to internal header

2025-05-23T07:48:22+00:00

sec_irq_init() is an internal API for the core driver, and doesn't
belong into the public header.

Due to an upcoming split of the driver into a core and i2c driver,
we'll also be adding more internal APIs, which again shouldn't be in
the public header.

Move it into a new internal include.

Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: André Draszik 
Link: https://lore.kernel.org/r/20250409-s2mpg10-v4-7-d66d5f39b6bf@linaro.org
Signed-off-by: Lee Jones

mfd: sec: Update includes to add missing and remove superfluous ones

2025-05-23T07:48:20+00:00

This driver misses to include some of the respective headers of some of
the APIs used. It also includes headers that aren't needed (e.g. due to
previous driver rework where includes weren't updated).

It is good practice to directly include all headers used, which avoids
implicit dependencies and spurious build breakage if someone rearranged
headers, as this could cause the implicit includes to be dropped.

Include the relevant headers explicitly and drop superfluous ones.

Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: André Draszik 
Link: https://lore.kernel.org/r/20250409-s2mpg10-v4-6-d66d5f39b6bf@linaro.org
Signed-off-by: Lee Jones

mfd: sec: Sort includes alphabetically

2025-05-23T07:48:19+00:00

Sorting headers alphabetically helps locating duplicates, and makes it
easier to figure out where to insert new headers.

Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: André Draszik 
Link: https://lore.kernel.org/r/20250409-s2mpg10-v4-5-d66d5f39b6bf@linaro.org
Signed-off-by: Lee Jones

mfd: sec: Add support for S2MPU05 PMIC

2025-03-13T12:38:45+00:00

Add support for Samsung's S2MPU05 PMIC. It's the primary PMIC used by
Exynos7870 devices. It houses regulators (21 LDOs and 5 BUCKs) and a RTC
clock device.

Signed-off-by: Kaustabh Chakraborty 
Reviewed-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20250301-exynos7870-pmic-regulators-v3-2-808d0b47a564@disroot.org
Signed-off-by: Lee Jones

mfd: sec-core: Add support for the Samsung s2dos05

2024-10-16T08:04:10+00:00

S2DOS05 is a panel/touchscreen PMIC, often found in
Samsung phones. We define regulator sub-device for which driver will
be added in subsequent patch. The device also has ADC for power and
current measurements.

Signed-off-by: Dzmitry Sankouski 
Reviewed-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20240617-starqltechn_integration_upstream-v5-2-ea1109029ba5@gmail.com
Signed-off-by: Lee Jones

mfd: Explicitly include correct DT includes

2023-08-18T20:48:03+00:00

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring 
Link: https://lore.kernel.org/r/20230714174731.4059811-1-robh@kernel.org
Signed-off-by: Lee Jones

mfd: Switch i2c drivers back to use .probe()

2023-06-15T08:19:37+00:00

After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.

Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20230515182752.10050-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Lee Jones