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Add a GPIO lower-half driver that can be used to register a GPIO character driver for accessing pins on an I/O expander.

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This commit is contained in:
Gregory Nutt
2016-08-01 08:43:10 -06:00
parent 91b1006d42
commit 6090f69bfd
6 changed files with 753 additions and 11 deletions
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drivers/ioexpander/Kconfig
+8
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@@ -139,4 +139,12 @@ config DEV_GPIO
Enables a simple GPIO input/output driver to support application-
space testing of hardware.
config GPIO_LOWER_HALF
bool "GPIO Lower Half"
default n
depends on DEV_GPIO && IOEXPANDER
---help---
Enable support for a lower half driver that provides GPIO driver
support for I/O expander pins.
endmenu # IO Expander/GPIO Support