linux-kernel - [PATCH v2 00/15] auxdisplay: linedisp: Clean up and add new driver

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Date: Mon, 12 Feb 2024 19:01:33 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Andy Shevchenko <andy@...nel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Robin van der Gracht <robin@...tonic.nl>,
	Paul Burton <paulburton@...nel.org>
Subject: [PATCH v2 00/15] auxdisplay: linedisp: Clean up and add new driver

Add a new initial driver for Maxim MAX6958/6959 chips.
While developing that driver I realised that there is a lot
of duplication between ht16k33 and a new one. Hence set of
cleanups and refactorings.

Note, the new driver has minimum support of the hardware and
I have plans to cover more features in the future.

In v2:
- updated DT bindings to follow specifications and requirements (Krzysztof)
- unified return code variable (err everywhere)
- left patches 10 and 13 untouched, we may amend later on (Robin)

Andy Shevchenko (15):
  auxdisplay: img-ascii-lcd: Make container_of() no-op for struct
    linedisp
  auxdisplay: linedisp: Free allocated resources in ->release()
  auxdisplay: linedisp: Use unique number for id
  auxdisplay: linedisp: Unshadow error codes in ->store()
  auxdisplay: linedisp: Add missing header(s)
  auxdisplay: linedisp: Move exported symbols to a namespace
  auxdisplay: linedisp: Group line display drivers together
  auxdisplay: linedisp: Provide struct linedisp_ops for future extension
  auxdisplay: linedisp: Add support for overriding character mapping
  auxdisplay: linedisp: Provide a small buffer in the struct linedisp
  auxdisplay: ht16k33: Move ht16k33_linedisp_ops down
  auxdisplay: ht16k33: Switch to use line display character mapping
  auxdisplay: ht16k33: Use buffer from struct linedisp
  dt-bindings: auxdisplay: Add Maxim MAX6958/6959
  auxdisplay: Add driver for MAX695x 7-segment LED controllers

 .../bindings/auxdisplay/maxim,max6959.yaml    |  35 +++
 drivers/auxdisplay/Kconfig                    |  40 ++--
 drivers/auxdisplay/Makefile                   |  13 +-
 drivers/auxdisplay/ht16k33.c                  | 145 +++++--------
 drivers/auxdisplay/img-ascii-lcd.c            |  24 ++-
 drivers/auxdisplay/line-display.c             | 162 ++++++++++++--
 drivers/auxdisplay/line-display.h             |  57 ++++-
 drivers/auxdisplay/max6959.c                  | 200 ++++++++++++++++++
 8 files changed, 530 insertions(+), 146 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/auxdisplay/maxim,max6959.yaml
 create mode 100644 drivers/auxdisplay/max6959.c

-- 
2.43.0.rc1.1.gbec44491f096