Recently when debugging why one of the scmi platform device was not showing up under /sys/devices/platform/firmware:scmi instead was appearing directly under /sys/devices/platform, I noticed the new faux interface /sys/devices/faux. Looking through the discussion and the background, I got excited and took the opportunity to clear all the platform devices under /sys/devices/platform on the Arm Juno/FVP platforms that are really faux devices. Only the platform devices created for the device nodes from the DT remain under /sys/devices/platform after these changes. All the patches are independent of each other and are part of the series just to demonstrate the use of macro module_faux_driver() where applicable. The idea is to get the macro merged first and then push the individual patches via respective subsystem later. Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx> --- Changes in v2: - Dropped all the modalias expect efivars(reason in the patch) - Defined new helper macro module_faux_driver() and moved most of the drivers to use it - Dropped already queued ASoC and regulator changes - Link to v1: https://lore.kernel.org/r/20250317-plat2faux_dev-v1-0-5fe67c085ad5@xxxxxxx --- Sudeep Holla (8): driver core: add helper macro for module_faux_driver() boilerplate cpuidle: psci: Transition to the faux device interface hwrng: arm-smccc-trng - transition to the faux device interface rtc: efi: Transition to the faux device interface virt: efi_secret: Transition to the faux device interface efi: efivars: Transition to the faux device interface ACPI: APEI: EINJ: Transition to the faux device interface net: phy: fixed_phy: transition to the faux device interface drivers/acpi/apei/einj-core.c | 51 ++++--------------------------- drivers/char/hw_random/arm_smccc_trng.c | 19 +++++------- drivers/cpuidle/cpuidle-psci.c | 32 +++---------------- drivers/firmware/efi/efi-pstore.c | 2 +- drivers/firmware/efi/efi.c | 12 ++------ drivers/firmware/smccc/smccc.c | 17 ----------- drivers/net/phy/fixed_phy.c | 16 +++++----- drivers/rtc/rtc-efi.c | 16 +++------- drivers/virt/coco/efi_secret/efi_secret.c | 29 +++++------------- include/linux/device/faux.h | 49 +++++++++++++++++++++++++++++ 10 files changed, 90 insertions(+), 153 deletions(-) --- base-commit: 4701f33a10702d5fc577c32434eb62adde0a1ae1 change-id: 20250315-plat2faux_dev-8c28b35be96a -- Regards, Sudeep
