This is the bulk of GPIO changes for the v4.17 kernel cycle:

New drivers:

- Nintendo Wii GameCube GPIO, known as "Hollywood"

- Raspberry Pi mailbox service GPIO expander

- Spreadtrum main SC9860 SoC and IEC GPIO controllers.

Improvements:

- Implemented .get_multiple() callback for most of the
  high-performance industrial GPIO cards for the ISA bus.

- ISA GPIO drivers now select the ISA_BUS_API instead of
  depending on it. This is merged with the same pattern
  for all the ISA drivers and some other Kconfig cleanups
  related to this.

Cleanup:

- Delete the TZ1090 GPIO drivers following the deletion of
  this SoC from the ARM tree.

- Move the documentation over to driver-api to conform with
  the rest of the kernel documentation build.

- Continue to make the GPIO drivers include only
  <linux/gpio/driver.h> and not the too broad <linux/gpio.h>
  that we want to get rid of.

- Managed to remove VLA allocation from two drivers pending
  more fixes in this area for the next merge window.

- Misc janitorial fixes.
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gpio: Add Spreadtrum PMIC EIC driver support

The Spreadtrum PMIC EIC controller contains only one bank of debounce EIC,
and this bank contains 16 EICs. Each EIC can only be used as input mode,
as well as supporting the debounce and the capability to trigger interrupts
when detecting input signals.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
3 files changed