@@ -24178,6 +24178,12 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git turbostat
F: tools/power/x86/turbostat/
F: tools/testing/selftests/turbostat/
+TUXEDO DRIVERS
+M: Werner Sembach <wse@tuxedocomputers.com>
+L: platform-driver-x86@vger.kernel.org
+S: Supported
+F: drivers/platform/x86/tuxedo/
+
TW5864 VIDEO4LINUX DRIVER
M: Bluecherry Maintainers <maintainers@bluecherrydvr.com>
M: Andrey Utkin <andrey.utkin@corp.bluecherry.net>
@@ -1199,3 +1199,5 @@ config P2SB
The main purpose of this library is to unhide P2SB device in case
firmware kept it hidden on some platforms in order to access devices
behind it.
+
+source "drivers/platform/x86/tuxedo/Kconfig"
@@ -153,3 +153,6 @@ obj-$(CONFIG_WINMATE_FM07_KEYS) += winmate-fm07-keys.o
# SEL
obj-$(CONFIG_SEL3350_PLATFORM) += sel3350-platform.o
+
+# TUXEDO
+obj-y += tuxedo/
new file mode 100644
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# TUXEDO X86 Platform Specific Drivers
+#
+
+obj-y += nb02/
new file mode 100644
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# TUXEDO X86 Platform Specific Drivers
+#
+
+source "drivers/platform/x86/tuxedo/nb02/Kconfig"
new file mode 100644
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# TUXEDO X86 Platform Specific Drivers
+#
+
+tuxedo_nb02_platform-y := platform.o
+obj-$(CONFIG_TUXEDO_NB02_PLATFORM) += tuxedo_nb02_platform.o
new file mode 100644
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# TUXEDO X86 Platform Specific Drivers
+#
+
+menuconfig TUXEDO_NB02_PLATFORM
+ tristate "TUXEDO NB02 Platform Driver"
+ help
+ This driver implements miscellaneous things found on TUXEDO Notebooks
+ with board vendor NB02. For the time being this is only remapping the
+ touchpad toggle key to something supported by most Linux distros
+ out-of-the-box and suppressing an unsupported scancode from the
+ FN-key.
+
+ When compiled as a module it will be called tuxedo_nb02_platform.
new file mode 100644
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2025 Werner Sembach wse@tuxedocomputers.com
+ */
+
+#include <linux/dmi.h>
+#include <linux/i8042.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/serio.h>
+
+static u8 tux_nb02_touchp_toggle_seq[] = {
+ 0xe0, 0x5b, // Super down
+ 0x1d, // Control down
+ 0x76, // Zenkaku/Hankaku down
+ 0xf6, // Zenkaku/Hankaku up
+ 0x9d, // Control up
+ 0xe0, 0xdb // Super up
+};
+
+static bool tux_nb02_i8042_filter(unsigned char data,
+ unsigned char str,
+ struct serio *port,
+ __always_unused void *context)
+{
+ static u8 seq_pos;
+
+ if (unlikely(str & I8042_STR_AUXDATA))
+ return false;
+
+ /* Replace touchpad toggle key sequence with a singular press of the
+ * F21-key.
+ */
+ if (unlikely(data == tux_nb02_touchp_toggle_seq[seq_pos])) {
+ ++seq_pos;
+ if (seq_pos == ARRAY_SIZE(tux_nb02_touchp_toggle_seq)) {
+ seq_pos = 0;
+ serio_interrupt(port, 0x6c, 0); // F21 down
+ serio_interrupt(port, 0xec, 0); // F21 up
+ }
+ return true;
+ }
+
+ /* Ignore bogus scancode produced by the FN-key. Reuse seq_pos as first
+ * byte of that is just the "extended"-byte.
+ */
+ if (unlikely(seq_pos == 1 && (data == 0x78 || data == 0xf8))) {
+ seq_pos = 0;
+ return true;
+ }
+
+ /* Replay skipped sequence bytes if it did not finish and it was not a
+ * FN-key press.
+ */
+ if (unlikely(seq_pos)) {
+ for (u8 i; i < seq_pos; ++i)
+ serio_interrupt(port, tux_nb02_touchp_toggle_seq[i], 0);
+ seq_pos = 0;
+ }
+
+ return false;
+}
+
+static const struct dmi_system_id tux_nb02_dmi_string_match[] __initconst = {
+ {
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TUXEDO"),
+ DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "NB02"),
+ },
+ },
+ { }
+};
+
+static int __init tux_nb02_plat_init(void)
+{
+ if (!dmi_check_system(tux_nb02_dmi_string_match))
+ return -ENODEV;
+
+ return i8042_install_filter(tux_nb02_i8042_filter, NULL);
+}
+
+static void __exit tux_nb02_plat_exit(void)
+{
+ i8042_remove_filter(tux_nb02_i8042_filter);
+}
+
+module_init(tux_nb02_plat_init);
+module_exit(tux_nb02_plat_exit);
+
+MODULE_ALIAS("dmi:*:svnTUXEDO:*:rvnNB02:*");
+
+MODULE_DESCRIPTION("TUXEDO NB02 Platform");
+MODULE_AUTHOR("Werner Sembach <wse@tuxedocomputers.com>");
+MODULE_LICENSE("GPL");
This small driver does 2 things: It remaps the touchpad toggle key from Control + Super + Hangaku/Zenkaku to F21 to conform with established userspace defaults. Note that the Hangaku/Zenkaku scancode used here is usually unused, with real Hangaku/Zenkaku keys using the tilde scancode. It suppresses the reserved scancode produced by pressing the FN-key on its own, which fixes a warning spamming the dmesg log otherwise. Signed-off-by: Werner Sembach <wse@tuxedocomputers.com> --- MAINTAINERS | 6 ++ drivers/platform/x86/Kconfig | 2 + drivers/platform/x86/Makefile | 3 + drivers/platform/x86/tuxedo/Kbuild | 6 ++ drivers/platform/x86/tuxedo/Kconfig | 6 ++ drivers/platform/x86/tuxedo/nb02/Kbuild | 7 ++ drivers/platform/x86/tuxedo/nb02/Kconfig | 15 ++++ drivers/platform/x86/tuxedo/nb02/platform.c | 94 +++++++++++++++++++++ 8 files changed, 139 insertions(+) create mode 100644 drivers/platform/x86/tuxedo/Kbuild create mode 100644 drivers/platform/x86/tuxedo/Kconfig create mode 100644 drivers/platform/x86/tuxedo/nb02/Kbuild create mode 100644 drivers/platform/x86/tuxedo/nb02/Kconfig create mode 100644 drivers/platform/x86/tuxedo/nb02/platform.c