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    Subject[PATCH AUTOSEL 5.14 52/99] platform/x86: ideapad-laptop: Fix Legion 5 Fn lock LED
    Date
    From: Meng Dong <whenov@gmail.com>

    [ Upstream commit 3ae86d2d4704796ee658a34245cb86e68c40c5d7 ]

    This patch fixes the bug 212671.
    Althrough the Fn lock (Fn + Esc) works on Legion 5 (R7000P), its LED
    light does not change with the state. This modification sets the Fn lock
    state to its current value on receiving the wmi event
    8FC0DE0C-B4E4-43FD-B0F3-8871711C1294 to update the LED state.

    Signed-off-by: Meng Dong <whenov@gmail.com>
    Link: https://lore.kernel.org/r/20210817171203.12855-1-whenov@gmail.com
    Reviewed-by: Hans de Goede <hdegoede@redhat.com>
    Signed-off-by: Hans de Goede <hdegoede@redhat.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/platform/x86/ideapad-laptop.c | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
    index 784326bd72f0..e7a1299e3776 100644
    --- a/drivers/platform/x86/ideapad-laptop.c
    +++ b/drivers/platform/x86/ideapad-laptop.c
    @@ -41,6 +41,7 @@
    static const char *const ideapad_wmi_fnesc_events[] = {
    "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", /* Yoga 3 */
    "56322276-8493-4CE8-A783-98C991274F5E", /* Yoga 700 */
    + "8FC0DE0C-B4E4-43FD-B0F3-8871711C1294", /* Legion 5 */
    };
    #endif

    @@ -1459,11 +1460,19 @@ static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
    static void ideapad_wmi_notify(u32 value, void *context)
    {
    struct ideapad_private *priv = context;
    + unsigned long result;

    switch (value) {
    case 128:
    ideapad_input_report(priv, value);
    break;
    + case 208:
    + if (!eval_hals(priv->adev->handle, &result)) {
    + bool state = test_bit(HALS_FNLOCK_STATE_BIT, &result);
    +
    + exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
    + }
    + break;
    default:
    dev_info(&priv->platform_device->dev,
    "Unknown WMI event: %u\n", value);
    --
    2.30.2
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