linux-kernel - [PATCH v2 0/7] introduce fwnode in the I2C subsystem

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Date:   Wed, 23 Mar 2022 10:18:03 +0100
From:   Clément Léger <clement.leger@...tlin.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Wolfram Sang <wsa@...nel.org>, Peter Rosin <peda@...ntia.se>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Len Brown <lenb@...nel.org>
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Allan Nielsen <allan.nielsen@...rochip.com>,
        linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-i2c@...r.kernel.org,
        Clément Léger <clement.leger@...tlin.com>
Subject: [PATCH v2 0/7] introduce fwnode in the I2C subsystem

In order to allow the I2C subsystem to be usable with fwnode, add
some functions to retrieve an i2c_adapter from a fwnode and use
these functions in both i2c mux and sfp. ACPI and device-tree are
handled to allow these modifications to work with both descriptions.
I2C mux support has also been modified to support fwnode based
descriptions.

This series is a subset of the one that was first submitted as a larger
series to add swnode support [1]. In this one, it will be focused on
fwnode support only since it seems to have reach a consensus that
adding fwnode to subsystems makes sense.

[1] https://lore.kernel.org/netdev/YhPSkz8+BIcdb72R@smile.fi.intel.com/T/

---------------

Changes in V2:
 - Remove sfp modifications
 - Add property_read_string_index fwnode_operation callback
 - Implement .property_read_string_index for of and swnode
 - Renamed np variable to fwnode

Clément Léger (7):
  device property: add fwnode_property_read_string_index()
  of: property: implement .property_read_string_index callback
  software node: implement .property_read_string_index callback
  i2c: fwnode: add fwnode_find_i2c_adapter_by_node()
  i2c: of: use fwnode_get_i2c_adapter_by_node()
  i2c: mux: pinctrl: remove CONFIG_OF dependency and use fwnode API
  i2c: mux: add support for fwnode

 drivers/base/property.c             | 26 +++++++++++++++++
 drivers/base/swnode.c               | 40 +++++++++++++++++++++++++
 drivers/i2c/Makefile                |  1 +
 drivers/i2c/i2c-core-fwnode.c       | 45 +++++++++++++++++++++++++++++
 drivers/i2c/i2c-core-of.c           | 30 -------------------
 drivers/i2c/i2c-mux.c               | 39 ++++++++++++-------------
 drivers/i2c/muxes/Kconfig           |  1 -
 drivers/i2c/muxes/i2c-mux-pinctrl.c | 23 ++++++++-------
 drivers/of/property.c               | 11 +++++++
 include/linux/fwnode.h              |  6 ++++
 include/linux/i2c.h                 |  8 ++++-
 include/linux/property.h            |  3 ++
 12 files changed, 169 insertions(+), 64 deletions(-)
 create mode 100644 drivers/i2c/i2c-core-fwnode.c

-- 
2.34.1