linux-kernel - [PATCH 2/2] platform/x86/amd: pmf: Use meta + L for screen lock command

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Message-ID: <20250407152705.1222469-2-superm1@kernel.org>
Date: Mon,  7 Apr 2025 10:27:05 -0500
From: Mario Limonciello <superm1@...nel.org>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Shyam Sundar S K <Shyam-sundar.S-k@....com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: Hans de Goede <hdegoede@...hat.com>,
	linux-input@...r.kernel.org (open list:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)...),
	linux-kernel@...r.kernel.org (open list),
	platform-driver-x86@...r.kernel.org (open list:AMD PMF DRIVER),
	Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH 2/2] platform/x86/amd: pmf: Use meta + L for screen lock command

From: Mario Limonciello <mario.limonciello@....com>

In practice userspace software doesn't react to KEY_SCREENLOCK by default.
So any time that the PMF policies would suggest to lock the screen (for
example from an HPD sensor event) userspace isn't configured to do it.

However userspace is configured for meta + L as this is the default
in the PC ecosystem. Adjust the PMF driver to send meta + L.

Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
v2:
 * Use helper from linux-input
---
 drivers/platform/x86/amd/pmf/tee-if.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c
index 20521d1f28f22..4bda905c3ba5c 100644
--- a/drivers/platform/x86/amd/pmf/tee-if.c
+++ b/drivers/platform/x86/amd/pmf/tee-if.c
@@ -170,7 +170,7 @@ static void amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_
 				amd_pmf_update_uevents(dev, KEY_SUSPEND);
 				break;
 			case 2:
-				amd_pmf_update_uevents(dev, KEY_SCREENLOCK);
+				input_report_lock_sequence(dev->pmf_idev);
 				break;
 			default:
 				dev_err(dev->dev, "Invalid PMF policy system state: %d\n", val);
@@ -441,8 +441,9 @@ int amd_pmf_register_input_device(struct amd_pmf_dev *dev)
 	dev->pmf_idev->phys = "amd-pmf/input0";
 
 	input_set_capability(dev->pmf_idev, EV_KEY, KEY_SLEEP);
-	input_set_capability(dev->pmf_idev, EV_KEY, KEY_SCREENLOCK);
 	input_set_capability(dev->pmf_idev, EV_KEY, KEY_SUSPEND);
+	input_set_capability(dev->pmf_idev, EV_KEY, KEY_L);
+	input_set_capability(dev->pmf_idev, EV_KEY, KEY_LEFTMETA);
 
 	err = input_register_device(dev->pmf_idev);
 	if (err) {
-- 
2.43.0