Currently all key events use autorelease, but this forbids use as a modifier key.
As all event codes come in even/odd pairs, we can lookup the key type (KE_KEY/KE_IGNORE) for the key up event corresponding to the currently handled key down event. If the key up is ignored, we keep setting the autorelease flag for the key down. Signed-off-by: Stefan Brüns <[email protected]> --- Changes in v2: - New patch, add support for seperate key up/down in intel-vbtn drivers/platform/x86/intel-vbtn.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c index ae55be91a64b..e3f6375af85c 100644 --- a/drivers/platform/x86/intel-vbtn.c +++ b/drivers/platform/x86/intel-vbtn.c @@ -76,14 +76,27 @@ static void notify_handler(acpi_handle handle, u32 event, void *context) { struct platform_device *device = context; struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev); + const struct key_entry *ke_rel; + bool autorelease; if (priv->wakeup_mode) { if (sparse_keymap_entry_from_scancode(priv->input_dev, event)) { pm_wakeup_hard_event(&device->dev); return; } - } else if (sparse_keymap_report_event(priv->input_dev, event, 1, true)) { - return; + } else { + /* Use the fact press/release come in even/odd pairs */ + if ((event & 1) && sparse_keymap_report_event(priv->input_dev, + event, 0, false)) + return; + + ke_rel = sparse_keymap_entry_from_scancode(priv->input_dev, + event | 1); + autorelease = !ke_rel || ke_rel->type == KE_IGNORE; + + if (sparse_keymap_report_event(priv->input_dev, event, 1, + autorelease)) + return; } dev_dbg(&device->dev, "unknown event index 0x%x\n", event); } -- 2.15.0
