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platform/x86: intel-vbtn: support panel front button 

The Lenovo Helix 2 and Dell XPS 12 (9Q33) have an extra button on the
front showing a 'Windows' logo, both reporting event codes 0xC2/0xC3
on press/release. On the Dell, both press/release are distinct events
while on the Helix 2 both events are generated on release.

Tested on XPS 12, for info on the Helix 2 see:
https://www.spinics.net/lists/ibm-acpi-devel/msg03982.html

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
hifive-unleashed-5.1
Stefan Brüns 2017-11-09 23:44:36 +01:00 committed by Darren Hart (VMware)
parent 3d5d95d316
commit 9678d0ef77
1 changed files with 2 additions and 0 deletions
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2
drivers/platform/x86/intel-vbtn.c
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@ -38,6 +38,8 @@ static const struct acpi_device_id intel_vbtn_ids[] = {
static const struct key_entry intel_vbtn_keymap[] = {
{ KE_KEY, 0xC0, { KEY_POWER } }, /* power key press */
{ KE_IGNORE, 0xC1, { KEY_POWER } }, /* power key release */
{ KE_KEY, 0xC2, { KEY_LEFTMETA } }, /* 'Windows' key press */
{ KE_KEY, 0xC3, { KEY_LEFTMETA } }, /* 'Windows' key release */
{ KE_KEY, 0xC4, { KEY_VOLUMEUP } }, /* volume-up key press */
{ KE_IGNORE, 0xC5, { KEY_VOLUMEUP } }, /* volume-up key release */
{ KE_KEY, 0xC6, { KEY_VOLUMEDOWN } }, /* volume-down key press */