Re: [PATCH net-next 1/3] dpll: add dpll_device op to get supported modes

[Vadim Fedorenko <vadim.fedorenko@linux.dev>]

On 12/01/2026 10:14, Ivan Vecera wrote:
> Currently, the DPLL subsystem assumes that the only supported mode is
> the one currently active on the device. When dpll_msg_add_mode_supported()
> is called, it relies on ops->mode_get() and reports that single mode
> to userspace. This prevents users from discovering other modes the device
> might be capable of.
> 
> Add a new callback .supported_modes_get() to struct dpll_device_ops. This
> allows drivers to populate a bitmap indicating all modes supported by
> the hardware.
> 
> Update dpll_msg_add_mode_supported() to utilize this new callback:
> 
> * if ops->supported_modes_get is defined, use it to retrieve the full
>    bitmap of supported modes.
> * if not defined, fall back to the existing behavior: retrieve
>    the current mode via ops->mode_get and set the corresponding bit
>    in the bitmap.
> 
> Finally, iterate over the bitmap and add a DPLL_A_MODE_SUPPORTED netlink
> attribute for every set bit, accurately reporting the device's capabilities
> to userspace.
> 
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>

LGTM,
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>