linux-kernel - [PATCH 1/2] platform/x86: hp-wmi: Add camera toggle switch to HP WMI

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Message-Id: <20230425202038.7403-1-jes965@nyu.edu>
Date:   Tue, 25 Apr 2023 16:20:36 -0400
From:   Jonathan Singer <jes965@....edu>
To:     platform-driver-x86@...r.kernel.org
Cc:     Jonathan Singer <jes965@....edu>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Jorge Lopez <jorge.lopez2@...com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Rishit Bansal <rishitbansal0@...il.com>,
        Bedant Patnaik <bedant.patnaik@...il.com>,
        Barnabás Pőcze <pobrn@...tonmail.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] platform/x86: hp-wmi: Add camera toggle switch to HP WMI

Previously, when the camera toggle switch was hit, the hp-wmi driver
would report an invalid event code. By adding a case for that in the
event handling switch statement we can eliminate that error code and
enable a framework for potential further kernel handling of that key.
This change was tested on my HP Envy x360 15-ey0023dx laptop, but it
would likely work for any HP laptop with a camera toggle button.

Signed-off-by: Jonathan Singer <jes965@....edu>
---
 drivers/platform/x86/hp/hp-wmi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
index 873f59c3e280..b27362209b04 100644
--- a/drivers/platform/x86/hp/hp-wmi.c
+++ b/drivers/platform/x86/hp/hp-wmi.c
@@ -90,6 +90,7 @@ enum hp_wmi_event_ids {
 	HPWMI_PEAKSHIFT_PERIOD		= 0x0F,
 	HPWMI_BATTERY_CHARGE_PERIOD	= 0x10,
 	HPWMI_SANITIZATION_MODE		= 0x17,
+	HPWMI_CAMERA_TOGGLE		= 0x1A,
 	HPWMI_OMEN_KEY			= 0x1D,
 	HPWMI_SMART_EXPERIENCE_APP	= 0x21,
 };
@@ -866,6 +867,8 @@ static void hp_wmi_notify(u32 value, void *context)
 		break;
 	case HPWMI_SANITIZATION_MODE:
 		break;
+	case HPWMI_CAMERA_TOGGLE:
+		break;
 	case HPWMI_SMART_EXPERIENCE_APP:
 		break;
 	default:
-- 
2.40.0