[PATCH v3 0/8] Implement get_multiple for ACCES and PC/104 drivers

[William Breathitt Gray]

Changes in v2:
  - Add missing bitmap.h header includes
  - Fix typographical error in symbol name for word_mask
  - Remove const qualifier for ports array

This patchset implements get_multiple callbacks for the PC104 GPIO
drivers as well as the PCI-IDIO-16 and PCIe-IDIO-24 GPIO drivers. These
devices all acquire the multiple input lines with a single read, so
utilizing the get_multiple callback can provide improvement for those
users who regularly access multiple input lines.

While developing this patchset I noticed many of these devices make use
of Intel 8255 compatible interfaces for their I/O. I may write a generic
8255 GPIO driver in the future to reduce some of the redundant code I
see pop among the drivers for these devices.

William Breathitt Gray (8):
  iio: stx104: Implement get_multiple callback
  gpio: 104-idio-16: Implement get_multiple callback
  gpio: pci-idio-16: Implement get_multiple callback
  gpio: pcie-idio-24: Implement get_multiple/set_multiple callbacks
  gpio: 104-dio-48e: Implement get_multiple callback
  gpio: 104-idi-48: Implement get_multiple callback
  gpio: gpio-mm: Implement get_multiple callback
  gpio: ws16c48: Implement get_multiple callback

 drivers/gpio/gpio-104-dio-48e.c  |  47 ++++++++++++++++
 drivers/gpio/gpio-104-idi-48.c   |  47 ++++++++++++++++
 drivers/gpio/gpio-104-idio-16.c  |  15 +++++
 drivers/gpio/gpio-gpio-mm.c      |  47 ++++++++++++++++
 drivers/gpio/gpio-pci-idio-16.c  |  50 +++++++++++++++++
 drivers/gpio/gpio-pcie-idio-24.c | 117 +++++++++++++++++++++++++++++++++++++++
 drivers/gpio/gpio-ws16c48.c      |  47 ++++++++++++++++
 drivers/iio/adc/stx104.c         |  11 ++++
 8 files changed, 381 insertions(+)

-- 
2.16.2