sometimes we press a key to boot, and the boot stage need to get this
event.
the current codes use edge trigger, so we have no chance to report
the cold-touch event.
but our user sceneries like Linux navigator does need it.
Signed-off-by: Barry Song <Baohua.Song@xxxxxxx>
---
-RFC: for the moment, only an idea
drivers/input/keyboard/gpio_keys.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/input/keyboard/gpio_keys.c
b/drivers/input/keyboard/gpio_keys.c
index ddf4045..77fe0dd 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -766,6 +766,19 @@ static int gpio_keys_probe(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, wakeup);
+ /* if the key is pressed while system boot, force an interrupt */
+ for (i = 0; i < pdata->nbuttons; i++) {
+ const struct gpio_keys_button *button = &pdata->buttons[i];
+ struct gpio_button_data *bdata = &ddata->data[i];
+ int state;
+
+ if (gpio_is_valid(button->gpio)) {
+ state = (gpio_get_value_cansleep(button->gpio) ? 1 : 0) ^
button->active_low;
+ if (state)
+ gpio_keys_gpio_isr(bdata->irq, bdata);
+ }
+ }
+
return 0;
err_remove_group:
--
1.9.1
--
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