linux-kernel - [PATCH 2/2] platform/x86: panasonic-laptop: allow to use all hotkeys

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Date:   Sun, 12 Jun 2022 11:05:07 +0200
From:   stefan.seyfried@...glemail.com
To:     kenneth.t.chan@...il.com
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Stefan Seyfried <seife+kernel@...systems.com>
Subject: [PATCH 2/2] platform/x86: panasonic-laptop: allow to use all hotkeys

From: Stefan Seyfried <seife+kernel@...systems.com>

commit ed83c9171829 broke the hotkeys on my Toughbook CF-51.
I'm questioning the general validity of that commit, but as I only
have a single machine to test, add a module parameter to allow making
it work at runtime.

Fixes: ed83c9171829 platform/x86: panasonic-laptop: Resolve hotkey double trigger bug
Signed-off-by: Stefan Seyfried <seife+kernel@...systems.com>
---
 drivers/platform/x86/panasonic-laptop.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index ca6137f4000f..83acae75aee2 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -141,6 +141,9 @@ MODULE_AUTHOR("Martin Lucina <mato@...elna.sk>");
 MODULE_AUTHOR("Kenneth Chan <kenneth.t.chan@...il.com>");
 MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops");
 MODULE_LICENSE("GPL");
+static bool hotkey_input;
+module_param(hotkey_input, bool, 0644);
+MODULE_PARM_DESC(hotkey_input, "Send all hotkeys to the input subsystem");
 
 #define LOGPREFIX "pcc_acpi: "
 
@@ -785,7 +788,7 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc)
 	}
 
 	/* for the magic values, see panasonic_keymap[] above */
-	if (key == 7 || key == 9 || key == 10) {
+	if (hotkey_input || key == 7 || key == 9 || key == 10) {
 		if (!sparse_keymap_report_event(hotk_input_dev,
 						key, updown, false))
 			pr_err("Unknown hotkey event: 0x%04llx\n", result);
-- 
2.36.1