From: Arnav Rawat arnavr3@illinois.edu
[ Upstream commit 81a5603a0f50fd7cf17ff21d106052215eaf2028 ]
Commit 3ae86d2d4704 ("platform/x86: ideapad-laptop: Fix Legion 5 Fn lock LED") uses the WMI event-id for the fn-lock event on some Legion 5 laptops to manually toggle the fn-lock LED because the EC does not do it itself. However, the same WMI ID is also sent on some Yoga laptops. Here, setting the fn-lock state is not valid behavior, and causes the EC to spam interrupts until the laptop is rebooted.
Add a set_fn_lock_led_list[] DMI-id list and only enable the workaround to manually set the LED on models on this list.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=212671 Cc: Meng Dong whenov@gmail.com Signed-off-by: Arnav Rawat arnavr3@illinois.edu Link: https://lore.kernel.org/r/12093851.O9o76ZdvQC@fedora [hdegoede@redhat.com: Check DMI-id list only once and store the result] Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/ideapad-laptop.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index e7a1299e3776..609ce8f0e0bf 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -136,6 +136,7 @@ struct ideapad_private { bool dytc : 1; bool fan_mode : 1; bool fn_lock : 1; + bool set_fn_lock_led : 1; bool hw_rfkill_switch : 1; bool kbd_bl : 1; bool touchpad_ctrl_via_ec : 1; @@ -1467,6 +1468,9 @@ static void ideapad_wmi_notify(u32 value, void *context) ideapad_input_report(priv, value); break; case 208: + if (!priv->features.set_fn_lock_led) + break; + if (!eval_hals(priv->adev->handle, &result)) { bool state = test_bit(HALS_FNLOCK_STATE_BIT, &result);
@@ -1480,6 +1484,18 @@ static void ideapad_wmi_notify(u32 value, void *context) } #endif
+/* On some models we need to call exec_sals(SALS_FNLOCK_ON/OFF) to set the LED */ +static const struct dmi_system_id set_fn_lock_led_list[] = { + { + /* https://bugzilla.kernel.org/show_bug.cgi?id=212671 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion R7000P2020H"), + } + }, + {} +}; + /* * Some ideapads have a hardware rfkill switch, but most do not have one. * Reading VPCCMD_R_RF always results in 0 on models without a hardware rfkill, @@ -1504,6 +1520,7 @@ static void ideapad_check_features(struct ideapad_private *priv) acpi_handle handle = priv->adev->handle; unsigned long val;
+ priv->features.set_fn_lock_led = dmi_check_system(set_fn_lock_led_list); priv->features.hw_rfkill_switch = dmi_check_system(hw_rfkill_list);
/* Most ideapads with ELAN0634 touchpad don't use EC touchpad switch */