[PATCH net-next 0/5] Rework resource allocation in Felix DSA driver

From: Vladimir Oltean <vladimir.oltean@nxp.com>
To: netdev@vger.kernel.org
Cc: Andrew Lunn <andrew@lunn.ch>,
	Vivien Didelot <vivien.didelot@gmail.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Claudiu Manoil <claudiu.manoil@nxp.com>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	UNGLinuxDriver@microchip.com,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Colin Foster <colin.foster@in-advantage.com>,
	Maxim Kochetkov <fido_max@inbox.ru>
Subject: [PATCH net-next 0/5] Rework resource allocation in Felix DSA driver
Date: Tue, 27 Sep 2022 22:15:15 +0300	[thread overview]
Message-ID: <20220927191521.1578084-1-vladimir.oltean@nxp.com> (raw)

The Felix DSA driver controls NXP variations of Microchip switches.
Colin Foster is trying to add support in this driver for "genuine"
Microchip hardware, but some of the NXP-isms in this driver need to go
away before that happens cleanly.
https://patchwork.kernel.org/project/netdevbpf/cover/20220926002928.2744638-1-colin.foster@in-advantage.com/

The starting point was Colin's patch 08/14 "net: dsa: felix: update
init_regmap to be string-based", and this continues to be the central
theme here, but things are done differently.

In short (full explanations are in patches), the goal is for MFD-based
switches like Colin's SPI-controlled VSC7512 to be able to request a
regmap that was created 100% externally (by drivers/mfd/ocelot-core.c)
in a very simple way, that does not create dependencies on other
modules. That is dev_get_regmap(), and as input it wants a string, for
the resource name. So we rework the resource allocation in this driver
to be based on string names provided by the specific instantiation (in
Colin's case, ocelot_ext.c).

Patch set was boot-tested on NXP LS1028A.

Vladimir Oltean (5):
  net: dsa: felix: remove felix_info :: imdio_res
  net: dsa: felix: remove felix_info :: imdio_base
  net: dsa: felix: remove felix_info :: init_regmap
  net: dsa: felix: use DEFINE_RES_MEM_NAMED for resources
  net: dsa: felix: update regmap requests to be string-based

 drivers/net/dsa/ocelot/felix.c           |  73 ++++++++----
 drivers/net/dsa/ocelot/felix.h           |  13 ++-
 drivers/net/dsa/ocelot/felix_vsc9959.c   | 136 +++++++---------------
 drivers/net/dsa/ocelot/seville_vsc9953.c | 140 ++++++-----------------
 4 files changed, 133 insertions(+), 229 deletions(-)

-- 
2.34.1