Hi Frank,
On Fri, Jul 12, 2024 at 06:43:51PM -0400, Frank Li wrote:
> From: Jacky Bai <ping.bai@xxxxxxx>
>
> Report input event directly on wakeup to ensure no press event is missed
> when resuming from suspend.
>
> Signed-off-by: Jacky Bai <ping.bai@xxxxxxx>
> Reviewed-by: Peng Fan <peng.fan@xxxxxxx>
> Acked-by: Jason Liu <jason.hui.liu@xxxxxxx>
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> ---
> drivers/input/misc/nxp-bbnsm-pwrkey.c | 36 +++++++++++++++++++++++++++
> 1 file changed, 36 insertions(+)
>
> diff --git a/drivers/input/misc/nxp-bbnsm-pwrkey.c b/drivers/input/misc/nxp-bbnsm-pwrkey.c
> index 1d99206dd3a8b..9675717ecbdfe 100644
> --- a/drivers/input/misc/nxp-bbnsm-pwrkey.c
> +++ b/drivers/input/misc/nxp-bbnsm-pwrkey.c
> @@ -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);
> @@ -81,6 +83,16 @@ static irqreturn_t bbnsm_pwrkey_interrupt(int irq, void *dev_id)
> mod_timer(&bbnsm->check_timer,
> jiffies + msecs_to_jiffies(DEBOUNCE_TIME));
>
> + /*
> + * Directly report key event after resume to make sure key press
> + * event is never missed.
> + */
How do you know that wakeup was caused by the key press on this device?
As far as I can see the driver requests the interrupt as shared, so we
could end up in bbnsm_pwrkey_interrupt() even if button was not pressed.
Thanks.
--
Dmitry
