[PATCH] platform/x86/intel-vbtn: add volume up and down

[Maarten Maathuis]

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

V2: Fix indent and add sign-off

Signed-off-by: Maarten Maathuis <madman2...@shikahr.net>
---
 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 554e82ebe83c..1616cb9c4ae5 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 },
 };
 
-- 
2.12.2