[PATCH net-next v2 00/11] net: pcs: Add support for devices probed in the "usual" manner

Sean Anderson
2022-11-03T21:07:09Z

For a long time, PCSs have been tightly coupled with their MACs. For
this reason, the MAC creates the "phy" or mdio device, and then passes
it to the PCS to initialize. This has a few disadvantages:

- Each MAC must re-implement the same steps to look up/create a PCS
- The PCS cannot use functions tied to device lifetime, such as devm_*.
- Generally, the PCS does not have easy access to its device tree node

This series adds a PCS subsystem which MDIO drivers can use to register
PCSs. It then converts the Lynx PCS library to use this subsystem.

Several (later) patches in this series cannot be applied until a stable
release has occured containing the dts updates. The DTS updates are
fairly straightforward (and should not affect existing systems), so I
encourage them to be applied, even if the rest of the series still needs
review.

Changes in v2:
- Add compatibles for qoriq-fman3-0-10g-2/3.dtsi as well
- Fix export of _pcs_get_by_fwnode
- Add device links to ensure correct probe/removal ordering
- Remove module_get/put, since this is ensured by the device_get/put
- Reorganize some of the control flow for legibility
- Add basic documentation
- Call mdio_device_register
- Squash in lynx parts of "use pcs_get_by_provider to get PCS"
- Rewrite probe/remove functions to use create/destroy. This lets us
convert existing drivers one at a time, instead of needing a flag day.
- Split off driver conversions into their own commits
- Reorder and rework commits for clarity

Sean Anderson (10):
arm64: dts: Add compatible strings for Lynx PCSs
powerpc: dts: Add compatible strings for Lynx PCSs
net: pcs: Add subsystem
net: pcs: lynx: Convert to an MDIO driver
net: enetc: Convert to use PCS subsystem
net: dsa: felix: Convert to use PCS driver
of: property: Add device link support for PCS
[DO NOT MERGE] net: dpaa: Convert to use PCS subsystem
[DO NOT MERGE] net: dpaa2: Convert to use PCS subsystem
[DO NOT MERGE] net: pcs: lynx: Remove non-device functionality

Vladimir Oltean (1):
net: dsa: ocelot: suppress PHY device scanning on the internal MDIO
bus

Documentation/networking/index.rst | 1 +
Documentation/networking/pcs.rst | 109 ++++++++
MAINTAINERS | 2 +
.../arm64/boot/dts/freescale/fsl-ls208xa.dtsi | 48 ++--
.../arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 54 ++--
.../dts/freescale/qoriq-fman3-0-10g-0.dtsi | 3 +-
.../dts/freescale/qoriq-fman3-0-10g-1.dtsi | 3 +-
.../dts/freescale/qoriq-fman3-0-1g-0.dtsi | 3 +-
.../dts/freescale/qoriq-fman3-0-1g-1.dtsi | 3 +-
.../dts/freescale/qoriq-fman3-0-1g-2.dtsi | 3 +-
.../dts/freescale/qoriq-fman3-0-1g-3.dtsi | 3 +-
.../dts/freescale/qoriq-fman3-0-1g-4.dtsi | 3 +-
.../dts/freescale/qoriq-fman3-0-1g-5.dtsi | 3 +-
.../fsl/qoriq-fman3-0-10g-0-best-effort.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-10g-0.dtsi | 3 +-
.../fsl/qoriq-fman3-0-10g-1-best-effort.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-10g-1.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-10g-2.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-10g-3.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-1g-0.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-1g-1.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-1g-2.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-1g-3.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-1g-4.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-0-1g-5.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-1-10g-0.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-1-10g-1.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-1-1g-0.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-1-1g-1.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-1-1g-2.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-1-1g-3.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-1-1g-4.dtsi | 3 +-
.../boot/dts/fsl/qoriq-fman3-1-1g-5.dtsi | 3 +-
drivers/net/dsa/ocelot/Kconfig | 2 +
drivers/net/dsa/ocelot/felix_vsc9959.c | 31 +--
drivers/net/dsa/ocelot/seville_vsc9953.c | 33 +--
drivers/net/ethernet/freescale/dpaa2/Kconfig | 1 +
.../net/ethernet/freescale/dpaa2/dpaa2-mac.c | 43 +---
drivers/net/ethernet/freescale/enetc/Kconfig | 1 +
.../net/ethernet/freescale/enetc/enetc_pf.c | 23 +-
.../net/ethernet/freescale/fman/fman_memac.c | 118 +++------
drivers/net/pcs/Kconfig | 23 +-
drivers/net/pcs/Makefile | 2 +
drivers/net/pcs/core.c | 243 ++++++++++++++++++
drivers/net/pcs/pcs-lynx.c | 76 ++++--
drivers/of/property.c | 4 +
include/linux/pcs-lynx.h | 12 +-
include/linux/pcs.h | 111 ++++++++
include/linux/phylink.h | 5 +
49 files changed, 758 insertions(+), 268 deletions(-)
create mode 100644 Documentation/networking/pcs.rst
create mode 100644 drivers/net/pcs/core.c
create mode 100644 include/linux/pcs.h

--
2.35.1.1320.gc452695387.dirty