[PATCH 00/15] staging: comedi: use common module for ISA DMA

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The comedi legacy drivers that use ISA DMA all currently depend on the
ISA_DMA_API being avaliable in order to be selected. The ISA_DMA_API is
only needed to optionally support DMA when running asnyc commands.

Introduce a new helper module that provides all the ISA DMA support. Modify
the Kconfig to select this module when the ISA_DMA_API is avaliable. This
removes the limitiation from the drivers and gets the support code into a
single place for maintainability,

Refactor all the comedi legacy drivers that use ISA DMA to use the new
module.

This series applies after:
 "[PATCH 00/37] staging: comedi: tidy up legacy DMA drivers"
 "[PATCH 00/25] staging: comedi: tidy up ISA DMA programming"

H Hartley Sweeten (15):
  staging: comedi: comedi_isadma: introduce helper module for ISA DMA
  staging: comedi: pcl818: remove depends on ISA_DMA_API limitation
  staging: comedi: pcl816: remove depends on ISA_DMA_API limitation
  staging: comedi: pcl812: remove depends on ISA_DMA_API limitation
  staging: comedi: das16: remove depends on ISA_DMA_API limitation
  staging: comedi: das1800: remove depends on ISA_DMA_API limitation
  staging: comedi: dt282x: remove depends on ISA_DMA_API limitation
  staging: comedi: ni_at_a2150: remove depends on ISA_DMA_API limitation
  staging: comedi: ni_labpc_isadma: use comedi_isdma module
  staging: comedi: pcl818: simplify the dma->size calculations
  staging: comedi: pcl818: use common function to setup dma
  staging: comedi: pcl816: simplify the dma->size calculations
  staging: comedi: pcl816: use common function to setup dma
  staging: comedi: pcl812: simplify the dma->size calculations
  staging: comedi: pcl812: use common function to setup dma

 drivers/staging/comedi/Kconfig                   |  18 +-
 drivers/staging/comedi/drivers/Makefile          |   1 +
 drivers/staging/comedi/drivers/comedi_isadma.c   | 262 +++++++++++++++++++++++
 drivers/staging/comedi/drivers/comedi_isadma.h   | 116 ++++++++++
 drivers/staging/comedi/drivers/das16.c           | 173 ++++-----------
 drivers/staging/comedi/drivers/das1800.c         | 178 +++++----------
 drivers/staging/comedi/drivers/dt282x.c          | 172 +++++----------
 drivers/staging/comedi/drivers/ni_at_a2150.c     | 156 ++++----------
 drivers/staging/comedi/drivers/ni_labpc.h        |  11 +-
 drivers/staging/comedi/drivers/ni_labpc_common.c |   2 +-
 drivers/staging/comedi/drivers/ni_labpc_isadma.c |  90 +++-----
 drivers/staging/comedi/drivers/ni_labpc_isadma.h |  16 +-
 drivers/staging/comedi/drivers/pcl812.c          | 244 ++++++---------------
 drivers/staging/comedi/drivers/pcl816.c          | 245 +++++++--------------
 drivers/staging/comedi/drivers/pcl818.c          | 170 ++++-----------
 15 files changed, 811 insertions(+), 1043 deletions(-)
 create mode 100644 drivers/staging/comedi/drivers/comedi_isadma.c
 create mode 100644 drivers/staging/comedi/drivers/comedi_isadma.h

-- 
2.0.3

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