From: Maarten Maathuis <madman2...@gmail.com>

[ Upstream commit 8d9e29972836b75eb74f533594999500a4c7cc19 ]

Tested on HP Elite X2 1012 G1.
Matches event report of Lenovo Helix 2
(https://www.spinics.net/lists/ibm-acpi-devel/msg03982.html).

Signed-off-by: Maarten Maathuis <madman2...@shikahr.net>
[andy: fixed indentation of comments and massaged title of the change]
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
---
 drivers/platform/x86/intel-vbtn.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/platform/x86/intel-vbtn.c 
b/drivers/platform/x86/intel-vbtn.c
index 78080763df51..a74340dff530 100644
--- a/drivers/platform/x86/intel-vbtn.c
+++ b/drivers/platform/x86/intel-vbtn.c
@@ -37,6 +37,10 @@ static const struct acpi_device_id intel_vbtn_ids[] = {
 static const struct key_entry intel_vbtn_keymap[] = {
        { KE_IGNORE, 0xC0, { KEY_POWER } },     /* power key press */
        { KE_KEY, 0xC1, { KEY_POWER } },        /* power 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 */
+       { KE_IGNORE, 0xC7, { KEY_VOLUMEDOWN } },        /* volume-down key 
release */
        { KE_END },
 };
 
-- 
2.14.1

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