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platform/x86: intel-hid: Add HP ProBook x360 440 G1 to button_array_table

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The volume rocker buttons on the HP ProBook x360 440 G1 convertible emit
events 0xc4-0xc7 via the intel-hid ACPI device (INT33D5). These codes are
only present in intel_array_keymap, which is used when the "5 button
array" input device exists. On this machine button_array_present()
returns false because the firmware does not advertise the array through
the HEBC method, so notify_handler() routes the events to a NULL
priv->array and they are dropped as "unknown event 0xc4". As a result
the side volume keys do nothing.

Add the machine to button_array_table so the array device is created and
the volume rocker emits KEY_VOLUMEUP / KEY_VOLUMEDOWN. This is equivalent
to booting with the enable_5_button_array=1 module parameter, which was
used to confirm the fix on the affected hardware.

Signed-off-by: Nikolay Metchev <nikolaymetchev@gmail.com>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Link: https://patch.msgid.link/20260609213309.445019-1-nikolaymetchev@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Nikolay Metchev 2026-06-09 22:33:09 +01:00 committed by Ilpo Järvinen
parent d29cce4dde
commit c39023ca9a
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1 changed files with 7 additions and 0 deletions
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drivers/platform/x86/intel/hid.c
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@ -156,6 +156,13 @@ static const struct dmi_system_id button_array_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Surface Go 4"),
},
},
{
.ident = "HP ProBook x360 440 G1",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "HP"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP ProBook x360 440 G1"),
},
},
{ }
};