The suggestion for this change was initially discussed here: [1] This patchset adds and use a helper to create a simple auxiliary device. The goal is to remove boilerplate code that tends to get repeated for simple cases. Only the last change was tested on actual HW. The other usage of the helper have only been compile tested with x64_64 allmodconfig. There are many other simple cases of auxiliary device creation but those tend to use the 'container_of' trick to allocate the auxiliary device. It is possible to convert these drivers to use the provided helper but the conversion is slightly more complex. [1]: https://lore.kernel.org/linux-clk/df0a53ee859e450d84e81547099f5f36.sboyd@xxxxxxxxxx Changes in v3: - Implement Ira's suggestion to use KBUILD_MODNAME by default, same as auxiliary_driver_register() - Link to v2: https://lore.kernel.org/r/20250206-aux-device-create-helper-v2-0-fa6a0f326527@xxxxxxxxxxxx Changes in v2: - Add usage examples, as requested. - Add 'id' as function parameter: Adding the example usage showed that handling IDA allocation was not appropriate and making the usage more complex for simple use case. - Also add 'modname' as parameter: Most driver have been using KBUILD_MODNAME and this actually rarely align with the driver name. - Link to v1: https://lore.kernel.org/r/20241210-aux-device-create-helper-v1-1-5887f4d89308@xxxxxxxxxxxx Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx> --- Jerome Brunet (7): driver core: auxiliary bus: add device creation helpers reset: mpfs: use the auxiliary device creation helper drm/bridge: ti-sn65dsi86: use the auxiliary device creation helper platform: arm64: lenovo-yoga-c630: use the auxiliary device creation helper clk: eyeq: use the auxiliary device creation helper clk: clk-imx8mp-audiomix: use the auxiliary device creation helper clk: amlogic: axg-audio: use the auxiliary reset driver - take 2 drivers/base/auxiliary.c | 88 +++++++++++++++++++++++ drivers/clk/clk-eyeq.c | 57 ++++----------- drivers/clk/imx/clk-imx8mp-audiomix.c | 56 ++------------- drivers/clk/meson/Kconfig | 2 +- drivers/clk/meson/axg-audio.c | 114 ++++-------------------------- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 84 ++++++---------------- drivers/platform/arm64/lenovo-yoga-c630.c | 42 ++--------- drivers/reset/reset-mpfs.c | 52 +------------- include/linux/auxiliary_bus.h | 10 +++ 9 files changed, 157 insertions(+), 348 deletions(-) --- base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b change-id: 20241210-aux-device-create-helper-93141524e523 Best regards, -- Jerome
