@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
//
-// Copyright 2022 NXP.
+// Copyright 2022-2023 NXP.
#include <linux/device.h>
#include <linux/err.h>
@@ -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 no key press
+ * event is missed.
+ */
+ if (bbnsm->suspended) {
+ bbnsm->keystate = 1;
+ input_event(input, EV_KEY, bbnsm->keycode, 1);
+ input_sync(input);
+ }
+
/* clear PWR OFF */
regmap_write(bbnsm->regmap, BBNSM_EVENTS, BBNSM_BTN_OFF);
@@ -173,6 +185,29 @@ 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 +217,7 @@ 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,
When wakeup from a on/off key press event, need to report this input event directly to make sure no press event is missed when resume from suspend. Fixes: 40e40fdfec3f ("Input: bbnsm_pwrkey - add bbnsm power key support") Signed-off-by: Jacky Bai <ping.bai@nxp.com> --- drivers/input/misc/nxp-bbnsm-pwrkey.c | 38 ++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-)