From be8fc023ef64dcb11042aaa4bb0f29f7e0335d85 Mon Sep 17 00:00:00 2001 From: David Collins Date: Sun, 24 Apr 2022 18:21:58 -0700 Subject: [PATCH] Input: pm8941-pwrkey - simulate missed key press events The status of the keys connected to the KPDPWR_N and RESIN_N pins is identified by reading corresponding bits in the interrupt real time status register. If the status has changed by the time that the interrupt is handled then a press event will be missed. Maintain a last known status variable to find unbalanced release events and simulate press events for each accordingly. Signed-off-by: David Collins Signed-off-by: Anjelique Melendez Link: https://lore.kernel.org/r/20220422191239.6271-6-quic_amelende@quicinc.com Signed-off-by: Dmitry Torokhov --- drivers/input/misc/pm8941-pwrkey.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/input/misc/pm8941-pwrkey.c b/drivers/input/misc/pm8941-pwrkey.c index 4ae6d0f6afa3e..549df01b6ee33 100644 --- a/drivers/input/misc/pm8941-pwrkey.c +++ b/drivers/input/misc/pm8941-pwrkey.c @@ -77,6 +77,7 @@ struct pm8941_pwrkey { u32 code; u32 sw_debounce_time_us; ktime_t sw_debounce_end_time; + bool last_status; const struct pm8941_data *data; }; @@ -167,6 +168,16 @@ static irqreturn_t pm8941_pwrkey_irq(int irq, void *_data) pwrkey->sw_debounce_end_time = ktime_add_us(ktime_get(), pwrkey->sw_debounce_time_us); + /* + * Simulate a press event in case a release event occurred without a + * corresponding press event. + */ + if (!pwrkey->last_status && !sts) { + input_report_key(pwrkey->input, pwrkey->code, 1); + input_sync(pwrkey->input); + } + pwrkey->last_status = sts; + input_report_key(pwrkey->input, pwrkey->code, sts); input_sync(pwrkey->input); -- 2.39.5