Attachment 106696 Details for Bug 84201 – udevadm info -a -p $(udevadm info -q path -n /dev/input/event0)

udevadm info -a -p $(udevadm info -q path -n /dev/input/event0)

udevadm-output (text/plain), 1.52 KB, created by Thomas Dziedzic on 2014-09-22 21:51:34 UTC

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Creator: Thomas Dziedzic

Created: 2014-09-22 21:51:34 UTC

Size: 1.52 KB

patch

obsolete

>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/68000000.ocp/48070000.i2c/i2c-0/0-0048/pwrbutton.33/input/input0/event0':
>    KERNEL=="event0"
>    SUBSYSTEM=="input"
>    DRIVER==""
>
>  looking at parent device '/devices/68000000.ocp/48070000.i2c/i2c-0/0-0048/pwrbutton.33/input/input0':
>    KERNELS=="input0"
>    SUBSYSTEMS=="input"
>    DRIVERS==""
>    ATTRS{name}=="twl4030_pwrbutton"
>    ATTRS{phys}=="twl4030_pwrbutton/input0"
>    ATTRS{uniq}==""
>    ATTRS{properties}=="0"
>
>  looking at parent device '/devices/68000000.ocp/48070000.i2c/i2c-0/0-0048/pwrbutton.33':
>    KERNELS=="pwrbutton.33"
>    SUBSYSTEMS=="platform"
>    DRIVERS=="twl4030_pwrbutton"
>
>  looking at parent device '/devices/68000000.ocp/48070000.i2c/i2c-0/0-0048':
>    KERNELS=="0-0048"
>    SUBSYSTEMS=="i2c"
>    DRIVERS=="twl"
>    ATTRS{name}=="twl4030"
>
>  looking at parent device '/devices/68000000.ocp/48070000.i2c/i2c-0':
>    KERNELS=="i2c-0"
>    SUBSYSTEMS=="i2c"
>    DRIVERS==""
>    ATTRS{name}=="OMAP I2C adapter"
>
>  looking at parent device '/devices/68000000.ocp/48070000.i2c':
>    KERNELS=="48070000.i2c"
>    SUBSYSTEMS=="platform"
>    DRIVERS=="omap_i2c"
>
>  looking at parent device '/devices/68000000.ocp':
>    KERNELS=="68000000.ocp"
>    SUBSYSTEMS=="platform"
>    DRIVERS==""

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