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Input: bbnsm_pwrkey - fix missed key press after suspend
Report input event directly on wakeup to ensure no press event is missed when resuming from suspend. Signed-off-by: Jacky Bai <ping.bai@nxp.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Acked-by: Jason Liu <jason.hui.liu@nxp.com> Signed-off-by: Frank Li <Frank.Li@nxp.com> Link: https://lore.kernel.org/r/20240716000721.3485597-1-Frank.Li@nxp.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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@ -38,6 +38,7 @@ struct bbnsm_pwrkey {
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int irq;
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int keycode;
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int keystate; /* 1:pressed */
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bool suspended;
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struct timer_list check_timer;
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struct input_dev *input;
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};
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@ -70,6 +71,7 @@ static irqreturn_t bbnsm_pwrkey_interrupt(int irq, void *dev_id)
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{
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struct platform_device *pdev = dev_id;
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struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
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struct input_dev *input = bbnsm->input;
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u32 event;
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regmap_read(bbnsm->regmap, BBNSM_EVENTS, &event);
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@ -78,6 +80,18 @@ static irqreturn_t bbnsm_pwrkey_interrupt(int irq, void *dev_id)
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pm_wakeup_event(bbnsm->input->dev.parent, 0);
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/*
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* Directly report key event after resume to make sure key press
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* event is never missed.
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*/
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if (bbnsm->suspended) {
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bbnsm->keystate = 1;
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input_event(input, EV_KEY, bbnsm->keycode, 1);
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input_sync(input);
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/* Fire at most once per suspend/resume cycle */
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bbnsm->suspended = false;
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}
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mod_timer(&bbnsm->check_timer,
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jiffies + msecs_to_jiffies(DEBOUNCE_TIME));
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@ -173,6 +187,29 @@ static int bbnsm_pwrkey_probe(struct platform_device *pdev)
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return 0;
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}
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static int __maybe_unused bbnsm_pwrkey_suspend(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
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bbnsm->suspended = true;
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return 0;
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}
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static int __maybe_unused bbnsm_pwrkey_resume(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
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bbnsm->suspended = false;
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return 0;
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}
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static SIMPLE_DEV_PM_OPS(bbnsm_pwrkey_pm_ops, bbnsm_pwrkey_suspend,
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bbnsm_pwrkey_resume);
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static const struct of_device_id bbnsm_pwrkey_ids[] = {
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{ .compatible = "nxp,imx93-bbnsm-pwrkey" },
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{ /* sentinel */ }
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@ -182,6 +219,7 @@ MODULE_DEVICE_TABLE(of, bbnsm_pwrkey_ids);
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static struct platform_driver bbnsm_pwrkey_driver = {
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.driver = {
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.name = "bbnsm_pwrkey",
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.pm = &bbnsm_pwrkey_pm_ops,
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.of_match_table = bbnsm_pwrkey_ids,
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},
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.probe = bbnsm_pwrkey_probe,
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