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Input: bbnsm_pwrkey - fix missed key press after suspend

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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>
This commit is contained in:
Jacky Bai 2024-07-15 20:07:21 -04:00 committed by Dmitry Torokhov
parent 5d33d04e0c
commit 2f99ffd8d7
1 changed files with 38 additions and 0 deletions
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38
drivers/input/misc/nxp-bbnsm-pwrkey.c
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@ -38,6 +38,7 @@ struct bbnsm_pwrkey {
int irq;
int keycode;
int keystate; /* 1:pressed */
bool suspended;
struct timer_list check_timer;
struct input_dev *input;
};
@ -70,6 +71,7 @@ static irqreturn_t bbnsm_pwrkey_interrupt(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
struct input_dev *input = bbnsm->input;
u32 event;
regmap_read(bbnsm->regmap, BBNSM_EVENTS, &event);
@ -78,6 +80,18 @@ static irqreturn_t bbnsm_pwrkey_interrupt(int irq, void *dev_id)
pm_wakeup_event(bbnsm->input->dev.parent, 0);
/*
* Directly report key event after resume to make sure key press
* event is never missed.
*/
if (bbnsm->suspended) {
bbnsm->keystate = 1;
input_event(input, EV_KEY, bbnsm->keycode, 1);
input_sync(input);
/* Fire at most once per suspend/resume cycle */
bbnsm->suspended = false;
}
mod_timer(&bbnsm->check_timer,
jiffies + msecs_to_jiffies(DEBOUNCE_TIME));
@ -173,6 +187,29 @@ static int bbnsm_pwrkey_probe(struct platform_device *pdev)
return 0;
}
static int __maybe_unused bbnsm_pwrkey_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
bbnsm->suspended = true;
return 0;
}
static int __maybe_unused bbnsm_pwrkey_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
bbnsm->suspended = false;
return 0;
}
static SIMPLE_DEV_PM_OPS(bbnsm_pwrkey_pm_ops, bbnsm_pwrkey_suspend,
bbnsm_pwrkey_resume);
static const struct of_device_id bbnsm_pwrkey_ids[] = {
{ .compatible = "nxp,imx93-bbnsm-pwrkey" },
{ /* sentinel */ }
@ -182,6 +219,7 @@ MODULE_DEVICE_TABLE(of, bbnsm_pwrkey_ids);
static struct platform_driver bbnsm_pwrkey_driver = {
.driver = {
.name = "bbnsm_pwrkey",
.pm = &bbnsm_pwrkey_pm_ops,
.of_match_table = bbnsm_pwrkey_ids,
},
.probe = bbnsm_pwrkey_probe,