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gpio: Driver for SYSCON-based GPIOs

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SYSCON driver was designed for using memory areas (registers)
that are used in several subsystems. There are systems (CPUs)
which use bits in one register for various purposes and thus
should be handled by various kernel subsystems. This driver
allows you to use the individual SYSCON bits as GPIOs.
ARM CLPS711X SYSFLG1 input lines has been added as first user
of this driver.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Alexander Shiyan
2014-03-11 21:55:14 +04:00
committed by Linus Walleij
parent 193385305b
commit 6a8a0c1d87
4 changed files with 215 additions and 0 deletions
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drivers/gpio/Kconfig
+6
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@@ -290,6 +290,12 @@ config GPIO_STA2X11
Say yes here to support the STA2x11/ConneXt GPIO device.
The GPIO module has 128 GPIO pins with alternate functions.
config GPIO_SYSCON
tristate "GPIO based on SYSCON"
depends on MFD_SYSCON && OF
help
Say yes here to support GPIO functionality though SYSCON driver.
config GPIO_TS5500
tristate "TS-5500 DIO blocks and compatibles"
depends on TS5500 || COMPILE_TEST