[PATCH v3 0/6] Add the Lantiq PEF2256 audio support

[Herve Codina <herve.codina@bootlin.com>]

Hi,

This series adds support for audio using the Lantiq PEF2256 framer.

The Lantiq PEF2256 is a framer and line interface component designed to
fulfill all required interfacing between an analog E1/T1/J1 line and the
digital PCM system highway/H.100 bus.

The first part of this series (patches 1 to 4) adds the Lantiq PEF2256
driver core.
The second part (patches 5 to 7) adds the audio support using the Lantiq
PEF2256 driver core.

The consumer/provider relation between the codec and the driver core
allows to use the PEF2256 framer for other purpose than audio support.

Compared to the previous iteration
  https://lore.kernel.org/linux-kernel/20230316122741.577663-1-herve.codina@bootlin.com/
This v3 series mainly:
  - takes into account pef2256.c modifications suggested by Christophe.
  - fixes binding
  - Moves to MFD.
  - Merges MAINTAINERS entries

Best regards,
Herve Codina

Changes v2 -> v3
  - Patch 1
    Remove unneeded 'allOf' and quotes.
    Add several 'additionalProperties: false'
    Fix example (node name, interrupts and reg properties)
    Replace the lantiq,sysclk-rate-hz property by sclkr and sclkx clocks.
    Define 'lantiq,frame-format' property in top level.
    Move to MFD

  - Patch 2
    Fix some #define.
    Compact the register accessor helpers.
    Rework pef2256_get_version().
    Merge v1.2 and v2.x GCM setup functions into one pef2256_setup_gcm().
    Update comments, avoid duplicates and change some conditionals.
    Remove the carrier spinlock and use atomic_t.
    Make exported symbol consistent and use EXPORT_SYMBOL_GPL.
    Remove the no more needed pef2256_get_byphandle() and
    devm_pef2256_get_byphandle().
    Replace the lantiq,sysclk-rate-hz property by sclkr and sclkx clocks.
    Move to MFD

  - Patch 4
    Remove, merged with patch 7

  - Patch 4 (patch 5 in v2)
    Update title and description.
    Remove incorrect SPI reference.
    Remove the 'lantiq,pef2256' phandle.
    Fix commit log

  - Patch 5 (patch 6 in v2)
    Remove devm_pef2256_get_byphandle().
    Fix commit log

  - Patch 6 (patch 7 in v2)
    Merge v2 patch 4. One entry only for PEF2256

Changes v1 -> v2
  - Patch 2
    Remove duplicate const qualifiers.
    Add HAS_IOMEM as a dependency

  - Patch 3
    Fix a "Block quote ends without a blank line; unexpected unindent"
    syntax issue.

Herve Codina (6):
  dt-bindings: mfd: Add the Lantiq  PEF2256 E1/T1/J1 framer
  mfd: Add support for the Lantiq PEF2256 framer
  Documentation: sysfs: Document the Lantiq PEF2256 sysfs entry
  dt-bindings: sound: Add support for the Lantiq PEF2256 codec
  ASoC: codecs: Add support for the Lantiq PEF2256 codec
  MAINTAINERS: Add the Lantiq PEF2256 driver entry

 .../sysfs-bus-platform-devices-pef2256        |   12 +
 .../bindings/mfd/lantiq,pef2256.yaml          |  205 +++
 .../bindings/sound/lantiq,pef2256-codec.yaml  |   54 +
 MAINTAINERS                                   |   10 +
 drivers/mfd/Kconfig                           |   16 +
 drivers/mfd/Makefile                          |    1 +
 drivers/mfd/pef2256.c                         | 1355 +++++++++++++++++
 include/linux/mfd/pef2256.h                   |   28 +
 sound/soc/codecs/Kconfig                      |   14 +
 sound/soc/codecs/Makefile                     |    2 +
 sound/soc/codecs/pef2256-codec.c              |  390 +++++
 11 files changed, 2087 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-devices-pef2256
 create mode 100644 Documentation/devicetree/bindings/mfd/lantiq,pef2256.yaml
 create mode 100644 Documentation/devicetree/bindings/sound/lantiq,pef2256-codec.yaml
 create mode 100644 drivers/mfd/pef2256.c
 create mode 100644 include/linux/mfd/pef2256.h
 create mode 100644 sound/soc/codecs/pef2256-codec.c

-- 
2.39.2