This series adds a driver for digital joysticks connected
via GPIOs.
Tested on Rasperry Pi and Minnowboard MAX using evtest.
The DSDT AML-code snippet below illustrates how to configure a joystick
on the Minnowboard MAX, using the new _DSD support in the kernel.
Scope (_SB)
{
Device (JOY)
{
Name (_HID, "PRP0001")
Name (_CRS, ResourceTemplate () {
GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
"\\_SB.GPO2", 0, ResourceConsumer) {1}
GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
"\\_SB.GPO2", 0, ResourceConsumer) {0}
GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
"\\_SB.GPO0", 0, ResourceConsumer) {95}
GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
"\\_SB.GPO0", 0, ResourceConsumer) {94}
GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
"\\_SB.GPO2", 0, ResourceConsumer) {2}
})
Name (_DSD, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {"compatible", "gpio-joy"},
Package () {"debounce-interval-ms", 15},
Package () {"left-gpio", Package () {^JOY, 0, 0, 1}},
Package () {"right-gpio", Package () {^JOY, 1, 0, 1}},
Package () {"up-gpio", Package () {^JOY, 2, 0, 1}},
Package () {"down-gpio", Package () {^JOY, 3, 0, 1}},
Package () {"button-gpio", Package () {^JOY, 4, 0, 1}},
}
})
}
}
Best regards,
Hans
Hans Holmberg (2):
Documentation: Device Tree binding information for gpio-joy driver
input: gpio-joy - GPIO joystick driver
.../devicetree/bindings/input/gpio-joy.txt | 29 +++
drivers/input/joystick/Kconfig | 10 +
drivers/input/joystick/Makefile | 1 +
drivers/input/joystick/gpio_joy.c | 208 +++++++++++++++++++++
4 files changed, 248 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/gpio-joy.txt
create mode 100644 drivers/input/joystick/gpio_joy.c
--
1.9.1
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