netdev - [PATCH net-next v2 0/3] dpll: support mode switching

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Message-ID: <20260113121636.71565-1-ivecera@redhat.com>
Date: Tue, 13 Jan 2026 13:16:33 +0100
From: Ivan Vecera <ivecera@...hat.com>
To: netdev@...r.kernel.org
Cc: Donald Hunter <donald.hunter@...il.com>,
	Jakub Kicinski <kuba@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
	Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Prathosh Satish <Prathosh.Satish@...rochip.com>,
	Petr Oros <poros@...hat.com>,
	linux-kernel@...r.kernel.org,
	Michal Schmidt <mschmidt@...hat.com>
Subject: [PATCH net-next v2 0/3] dpll: support mode switching

This series adds support for switching the working mode (automatic vs
manual) of a DPLL device via netlink.

Currently, the DPLL subsystem allows userspace to retrieve the current
working mode but lacks the mechanism to configure it. Userspace is also
unaware of which modes a specific device actually supports, as it
currently assumes only the active mode is supported.

The series addresses these limitations by:
1. Introducing .supported_modes_get() callback to allow drivers to report
   all modes capable of running on the device.
2. Introducing .mode_set() callback and updating the netlink policy
   to allow userspace to request a mode change.
3. Implementing these callbacks in the zl3073x driver, enabling dynamic
   switching between automatic and manual modes.

Changelog:
v2 - addressed issues reported by Vadim

Ivan Vecera (3):
  dpll: add dpll_device op to get supported modes
  dpll: add dpll_device op to set working mode
  dpll: zl3073x: Implement device mode setting support

 Documentation/netlink/specs/dpll.yaml |   1 +
 drivers/dpll/dpll_netlink.c           |  71 ++++++++++++++--
 drivers/dpll/dpll_nl.c                |   1 +
 drivers/dpll/zl3073x/dpll.c           | 112 ++++++++++++++++++++++++++
 include/linux/dpll.h                  |   5 ++
 5 files changed, 182 insertions(+), 8 deletions(-)

-- 
2.52.0