diff options
| author | Sebastian Reichel <sre@kernel.org> | 2025-11-19 01:41:43 +0100 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2025-11-24 19:05:57 +0200 |
| commit | 3c79c2e28a24a86199fa83bb80dc1a1c33f996c5 (patch) | |
| tree | e7ae33b86dcb99cdb3fe269400a2f2c74c120fae | |
| parent | fc62cb6a3e118a7633ca2217203b6293bb742a23 (diff) | |
platform: arm64: thinkpad-t14s-ec: add suspend handler for keyboard backlight
This ensures that the keyboard backlight state is restored after
a suspend-resume cycle. Otherwise the keyboard is automatically
disabled during suspend and then stays disabled after resume.
Note, that this adopts the same behavior as the existing Thinkpad
ACPI driver.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Link: https://patch.msgid.link/20251119-thinkpad-t14s-ec-improvements-v2-4-441219857c02@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
| -rw-r--r-- | drivers/platform/arm64/lenovo-thinkpad-t14s.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/platform/arm64/lenovo-thinkpad-t14s.c b/drivers/platform/arm64/lenovo-thinkpad-t14s.c index 4bebe7b3b2a8..1569a0b2a0e7 100644 --- a/drivers/platform/arm64/lenovo-thinkpad-t14s.c +++ b/drivers/platform/arm64/lenovo-thinkpad-t14s.c @@ -606,6 +606,8 @@ static int t14s_ec_suspend(struct device *dev) { struct t14s_ec *ec = dev_get_drvdata(dev); + led_classdev_suspend(&ec->kbd_backlight); + t14s_ec_write_sequence(ec, T14S_EC_REG_MODERN_STANDBY, T14S_EC_MODERN_STANDBY_ENTRY, 3); @@ -619,6 +621,8 @@ static int t14s_ec_resume(struct device *dev) t14s_ec_write_sequence(ec, T14S_EC_REG_MODERN_STANDBY, T14S_EC_MODERN_STANDBY_EXIT, 3); + led_classdev_resume(&ec->kbd_backlight); + return 0; } |