[PATCH 2/2] platform/x86: hp-wmi: Add support for Fn+P hotkey

[edip@medip.dev]

From: Edip Hazuri <edip@medip.dev>

Newer Hp Victus (And probably newer omen) e.g. Victus 16-s1011nt that i
own have a Fn+P shortcut intended to use with omen gaming hub for
changing the performance profile. see [1]

> hp_wmi: Unknown event_id - 27 - 0x7
Based on the dmesg warning. I found that the key have 27 as event_id and
0x7 as event_data (keycode). I implemented it in the driver and now
libinput can capture the event.

Tested On Victus 16-s1011nt (9Z791EA) with MB 8C9C

[1]: https://jpcdn.it/img/adadf6c927ffeb75afd8038f95db400a.png

Signed-off-by: Edip Hazuri <edip@medip.dev>
---
 drivers/platform/x86/hp/hp-wmi.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
index db5fdee2109..6467ca27db7 100644
--- a/drivers/platform/x86/hp/hp-wmi.c
+++ b/drivers/platform/x86/hp/hp-wmi.c
@@ -122,6 +122,7 @@ enum hp_wmi_event_ids {
 	HPWMI_BATTERY_CHARGE_PERIOD	= 0x10,
 	HPWMI_SANITIZATION_MODE		= 0x17,
 	HPWMI_CAMERA_TOGGLE		= 0x1A,
+	HPWMI_FN_P_HOTKEY		= 0x1B,
 	HPWMI_OMEN_KEY			= 0x1D,
 	HPWMI_SMART_EXPERIENCE_APP	= 0x21,
 };
@@ -280,6 +281,7 @@ struct bios_rfkill2_state {
 static const struct key_entry hp_wmi_keymap[] = {
 	{ KE_KEY, 0x02,    { KEY_BRIGHTNESSUP } },
 	{ KE_KEY, 0x03,    { KEY_BRIGHTNESSDOWN } },
+	{ KE_KEY, 0x07,    { KEY_FN_P } },
 	{ KE_KEY, 0x270,   { KEY_MICMUTE } },
 	{ KE_KEY, 0x20e6,  { KEY_PROG1 } },
 	{ KE_KEY, 0x20e8,  { KEY_MEDIA } },
@@ -981,6 +983,15 @@ static void hp_wmi_notify(union acpi_object *obj, void *context)
 						key_code, 1, true))
 			pr_info("Unknown key code - 0x%x\n", key_code);
 		break;
+	case HPWMI_FN_P_HOTKEY:
+		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;
-- 
2.50.1