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 <[email protected]> --- -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 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
