[PATCH 00/10] drm/mgag200: Refactor DDC code

[Thomas Zimmermann]

Clean up a the driver's DDC code, make it simpler, more robust, and
mostly self contained. The patches in this patchset have previously
been sent as part of rev 1 of [1].

Patches 1 and 2 fix long-standing problems in the DDC code.

Patches 3 to 9 refactor the DDC code. The code then keeps its data
structures internal, acquires locks automatically and is much more
readable overall.

Patch 10 replaces driver code with an equivalent helper.

Tested on various Matrox hardware.

[1] https://patchwork.freedesktop.org/series/131977/

Thomas Zimmermann (10):
  drm/mgag200: Set DDC timeout in milliseconds
  drm/mgag200: Bind I2C lifetime to DRM device
  drm/mgag200: Store pointer to struct mga_device in struct mga_i2c_chan
  drm/mgag200: Allocate instance of struct mga_i2c_chan dynamically
  drm/mgag200: Inline mgag200_i2c_init()
  drm/mgag200: Replace struct mga_i2c_chan with struct mgag200_ddc
  drm/mgag200: Rename mgag200_i2c.c to mgag200_ddc.c
  drm/mgag200: Rename struct i2c_algo_bit_data callbacks
  drm/mgag200: Acquire I/O-register lock in DDC code
  drm/mgag200: Use drm_connector_helper_get_modes()

 drivers/gpu/drm/mgag200/Makefile          |   2 +-
 drivers/gpu/drm/mgag200/mgag200_ddc.c     | 179 ++++++++++++++++++++++
 drivers/gpu/drm/mgag200/mgag200_ddc.h     |  11 ++
 drivers/gpu/drm/mgag200/mgag200_drv.h     |  18 +--
 drivers/gpu/drm/mgag200/mgag200_g200.c    |  11 +-
 drivers/gpu/drm/mgag200/mgag200_g200eh.c  |  11 +-
 drivers/gpu/drm/mgag200/mgag200_g200eh3.c |  11 +-
 drivers/gpu/drm/mgag200/mgag200_g200er.c  |  11 +-
 drivers/gpu/drm/mgag200/mgag200_g200ev.c  |  11 +-
 drivers/gpu/drm/mgag200/mgag200_g200ew3.c |  11 +-
 drivers/gpu/drm/mgag200/mgag200_g200se.c  |  11 +-
 drivers/gpu/drm/mgag200/mgag200_g200wb.c  |  11 +-
 drivers/gpu/drm/mgag200/mgag200_i2c.c     | 129 ----------------
 drivers/gpu/drm/mgag200/mgag200_mode.c    |  27 +---
 14 files changed, 241 insertions(+), 213 deletions(-)
 create mode 100644 drivers/gpu/drm/mgag200/mgag200_ddc.c
 create mode 100644 drivers/gpu/drm/mgag200/mgag200_ddc.h
 delete mode 100644 drivers/gpu/drm/mgag200/mgag200_i2c.c

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2.45.0