diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2016-08-31 10:49:44 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-03-24 16:04:46 +0300 |
| commit | 380639c7cc786ec663e43eb3896ccf9172a46900 (patch) | |
| tree | b51574a49f52ff542c8c915a582450ac06de68b8 /drivers/gpio/Makefile | |
| parent | c65d1fd350fa28de79e86e18ef73b902a67c791a (diff) | |
| download | linux-380639c7cc786ec663e43eb3896ccf9172a46900.tar.xz | |
gpio: add generic single-register fixed-direction GPIO driver
Add a simple, generic, single register fixed-direction GPIO driver.
This is able to support a single register with a mixture of inputs
and outputs.
This is different from gpio-mmio and gpio-74xx-mmio:
* gpio-mmio doesn't allow a fixed direction, it assumes there is always
a direction register.
* gpio-74xx-mmio only supports all-in or all-out setups
* gpio-74xx-mmio is DT only, this needs to support legacy too
* they don't double-read when getting the GPIO value, as required by
some implementations that this driver supports
* we need to always do 32-bit reads, which bgpio doesn't guarantee
* the current output state may not be readable from the hardware
register - reading may reflect input status but not output status.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/Makefile')
| -rw-r--r-- | drivers/gpio/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index bd995dc2a84a..095598e856ca 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -98,6 +98,7 @@ obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o obj-$(CONFIG_GPIO_RC5T583) += gpio-rc5t583.o obj-$(CONFIG_GPIO_RDC321X) += gpio-rdc321x.o obj-$(CONFIG_GPIO_RCAR) += gpio-rcar.o +obj-$(CONFIG_GPIO_REG) += gpio-reg.o obj-$(CONFIG_ARCH_SA1100) += gpio-sa1100.o obj-$(CONFIG_GPIO_SCH) += gpio-sch.o obj-$(CONFIG_GPIO_SCH311X) += gpio-sch311x.o |