[PATCH v6 1/4] firmware: smccc: Add an Arm SMCCC bus

[Sudeep Holla]

On Wed, May 27, 2026 at 03:32:30PM +0530, Aneesh Kumar K.V (Arm) wrote:
> SMCCC-discovered firmware services are currently represented by separate
> platform devices, such as smccc_trng and arm-cca-dev. Those devices do not
> represent independent DT/ACPI-described platform resources; they are
> features of the SMCCC firmware interface.
> 
> Add an Arm SMCCC bus for services discovered through the SMCCC firmware
> interface. The bus provides SMCCC device and driver registration helpers,
> name-based matching, modalias generation, and a sysfs modalias attribute so
> SMCCC service drivers can bind to discovered firmware services and autoload
> as modules.
> 
> Follow-up changes can then register SMCCC firmware services as arm-smccc
> devices instead of creating independent per-feature platform devices.
>

This looks good to me.

> Based on arm_ffa code
> 
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar at kernel.org>
> ---
>  drivers/firmware/smccc/smccc.c    | 158 ++++++++++++++++++++++++++++++

I think it is better to keep it separate say bus.c ?

-- 
Regards,
Sudeep