https://bugzilla.kernel.org/show_bug.cgi?id=107051
Bug ID: 107051
Summary: Interrupts not working on GPIO buttons connected to
Crystal Cove chip
Product: ACPI
Version: 2.5
Kernel Version: 4.2.5
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Interrupts
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Created attachment 191851
--> https://bugzilla.kernel.org/attachment.cgi?id=191851&action=edit
DSDT
I'm using a HP Omni 10 tablet with a Baytrail soc. The tablet has the usual
home, power and volume buttons. The home + power buttons are working as
expected but the volume buttons are not working. They are connected to a
CrystalCove device, it seems to be very similar to the Asus T100TA:
https://bugzilla.kernel.org/show_bug.cgi?id=90521
The volume buttons are detected ok but no interrupts are registered. Also when
I try to register/read them manually via /sys/class/gpio the value will remain
0.
Many thanks in advance!
interrupts:
CPU0 CPU1 CPU2 CPU3
16: 0 0 0 0 BYT-GPIO 6 home
158: 0 0 0 0 BYT-GPIO 16 power
207: 0 0 0 0 IO-APIC 67-fasteoi
Crystal Cove
212: 0 0 0 0 Crystal Cove 5
gpio_crystalcove
213: 0 0 0 0 Crystal Cove 0
volume_down
214: 0 0 0 0 Crystal Cove 1 volume_up
dsdt button array:
GpioInt (Edge, ActiveBoth, ExclusiveAndWake, PullDefault,
0x0000,
"\\_SB.GPO2", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0010
}
GpioInt (Edge, ActiveBoth, ExclusiveAndWake, PullDefault,
0x0000,
"\\_SB.GPO0", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0006
}
GpioInt (Edge, ActiveBoth, Exclusive, 0x80, 0x0000,
"\\_SB.I2C7.PMIC", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0001
}
GpioInt (Edge, ActiveBoth, Exclusive, 0x80, 0x0000,
"\\_SB.I2C7.PMIC", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x0000
}
})
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