[PATCH v3 2/2] platform/x86: hp-wmi: Add HP Envy special key support

From: Jonathan Singer
Date: Wed Apr 26 2023 - 14:50:48 EST


Previously, some support for certain keys on the HP keyboard has been
added already in commit 3ee5447b2048 ("platform/x86: hp-wmi: Handle Omen
Key event"), however this as tested did not allow even the fn+esc key on
my HP Envy which uses the same keycode on my HP Envy x360 laptop to work
--the keycode rather than being passed in as a separate int from WMI, was
being passed in as the event_data for the HPWMI_OMEN_KEY event.

This patch, as tested was able to properly get the keycode for fn+esc,
and for fn+f12 which is supposed to be a programmable key according to
HP's keyboard diagram and is thus mapped to KEY_PROG2. The fn+f8 key
combination (mute microphone) was a standard HPWMI_BEZEL_BUTTON key,
however it did not previously have an entry in the sparse keymap. This
patch preserves the original HPWMI_OMEN_KEY behavior for laptops that
use it by only taking the keycode from the event_data only when the
event_data is nonzero.

Signed-off-by: Jonathan Singer <jes965@xxxxxxx>
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
V2 changes: Removed confusing comment

drivers/platform/x86/hp/hp-wmi.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
index 18d40270aa0d..2749433b713f 100644
--- a/drivers/platform/x86/hp/hp-wmi.c
+++ b/drivers/platform/x86/hp/hp-wmi.c
@@ -212,6 +212,7 @@ struct bios_rfkill2_state {
static const struct key_entry hp_wmi_keymap[] = {
{ KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
{ KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 0x270, { KEY_MICMUTE } },
{ KE_KEY, 0x20e6, { KEY_PROG1 } },
{ KE_KEY, 0x20e8, { KEY_MEDIA } },
{ KE_KEY, 0x2142, { KEY_MEDIA } },
@@ -222,6 +223,7 @@ static const struct key_entry hp_wmi_keymap[] = {
{ KE_IGNORE, 0x121a4, }, /* Win Lock Off */
{ KE_KEY, 0x21a5, { KEY_PROG2 } }, /* HP Omen Key */
{ KE_KEY, 0x21a7, { KEY_FN_ESC } },
+ { KE_KEY, 0x21a8, { KEY_PROG2 } }, /* HP Envy x360 programmable key */
{ KE_KEY, 0x21a9, { KEY_TOUCHPAD_OFF } },
{ KE_KEY, 0x121a9, { KEY_TOUCHPAD_ON } },
{ KE_KEY, 0x231b, { KEY_HELP } },
@@ -844,11 +846,20 @@ static void hp_wmi_notify(u32 value, void *context)
case HPWMI_SMART_ADAPTER:
break;
case HPWMI_BEZEL_BUTTON:
- case HPWMI_OMEN_KEY:
key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
if (key_code < 0)
break;

+ if (!sparse_keymap_report_event(hp_wmi_input_dev,
+ key_code, 1, true))
+ pr_info("Unknown key code - 0x%x\n", key_code);
+ break;
+ case HPWMI_OMEN_KEY:
+ if (event_data) /* Only should be true for HP Omen */
+ key_code = event_data;
+ else
+ key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
+
if (!sparse_keymap_report_event(hp_wmi_input_dev,
key_code, 1, true))
pr_info("Unknown key code - 0x%x\n", key_code);
--
2.40.0