From 492d7a3038b154e1813a1ece913a5a27148fec19 Mon Sep 17 00:00:00 2001

From: Koen Kooi <koen@dominion.thruhere.net>

Date: Sat, 27 Sep 2014 09:55:44 +0200

Subject: [PATCH] logind: add support for TPS65217 Power Button

This PMIC is found on TI AM335x based boards like the beaglebone and

beaglebone black.

root@beaglebone-white:~# udevadm info -a /dev/input/event0

Udevadm info starts with the device specified by the devpath and then

walks up the chain of parent devices. It prints for every device

found, all possible attributes in the udev rules key format.

A rule to match, can be composed by the attributes of the device

and the attributes from one single parent device.

  looking at device

'/devices/ocp.3/44e0b000.i2c/i2c-0/0-0024/input/input0/event0':

    KERNEL=="event0"

    SUBSYSTEM=="input"

    DRIVER==""

  looking at parent device

'/devices/ocp.3/44e0b000.i2c/i2c-0/0-0024/input/input0':

    KERNELS=="input0"

    SUBSYSTEMS=="input"

    DRIVERS==""

    ATTRS{name}=="tps65217_pwr_but"

    ATTRS{phys}==""

    ATTRS{uniq}==""

    ATTRS{properties}=="0"

  looking at parent device '/devices/ocp.3/44e0b000.i2c/i2c-0/0-0024':

    KERNELS=="0-0024"

    SUBSYSTEMS=="i2c"

    DRIVERS=="tps65217"

    ATTRS{name}=="tps65217"

  looking at parent device '/devices/ocp.3/44e0b000.i2c/i2c-0':

    KERNELS=="i2c-0"

    SUBSYSTEMS=="i2c"

    DRIVERS==""

    ATTRS{name}=="OMAP I2C adapter"

  looking at parent device '/devices/ocp.3/44e0b000.i2c':

    KERNELS=="44e0b000.i2c"

    SUBSYSTEMS=="platform"

    DRIVERS=="omap_i2c"

  looking at parent device '/devices/ocp.3':

    KERNELS=="ocp.3"

    SUBSYSTEMS=="platform"

    DRIVERS==""

---

 src/login/70-power-switch.rules | 1 +

 1 file changed, 1 insertion(+)

diff --git a/src/login/70-power-switch.rules b/src/login/70-power-switch.rules

index a6997f7788..695d246370 100644

--- a/src/login/70-power-switch.rules

+++ b/src/login/70-power-switch.rules

@@ -10,5 +10,6 @@ ACTION=="remove", GOTO="power_switch_end"

 SUBSYSTEM=="input", KERNEL=="event*", SUBSYSTEMS=="acpi", TAG+="power-switch"

 SUBSYSTEM=="input", KERNEL=="event*", KERNELS=="thinkpad_acpi", TAG+="power-switch"

 SUBSYSTEM=="input", KERNEL=="event*", ATTRS{name}=="twl4030_pwrbutton", TAG+="power-switch"

+SUBSYSTEM=="input", KERNEL=="event*", ATTRS{name}=="tps65217_pwr_but", TAG+="power-switch"

 LABEL="power_switch_end"