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| author |   Hans de Goede <hdegoede@redhat.com> | 2017-01-21 11:14:14 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-01-21 11:46:52 -0800 |
| commit | 5c4fa2a6da7fbc76290d1cb54a7e35633517a522 (patch) | |
| tree | 632c3219f8ba561580053e58656fadf84cc23b3c /drivers/input/misc/soc_button_array.c | |
| parent | Input: tm2-touchkey - add touchkey driver support for TM2 (diff) | |
| download | linux-dev-5c4fa2a6da7fbc76290d1cb54a7e35633517a522.tar.xz linux-dev-5c4fa2a6da7fbc76290d1cb54a7e35633517a522.zip | |
Input: soc_button_array - debounce the buttons
The soc_button_array driver was initializing (kzalloc) the
debounce_interval value to 0, leading to no debouncing at all,
while the buttons are simple mechanical switches.
This commit sets debounce_interval to 50ms to avoid spurious button
press reports both on press and release of the button. Note 50ms may
seem like a lot but soc_button_array is typically used with cheap
tablets, with not so great buttons. I tried 10ms on my tablet and it
is not enough, where as 50ms works well.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/input/misc/soc_button_array.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c index fb3219a8d3c0..ddb2f22fca7a 100644 --- a/drivers/input/misc/soc_button_array.c +++ b/drivers/input/misc/soc_button_array.c @@ -102,6 +102,8 @@ soc_button_device_create(struct platform_device *pdev, gpio_keys[n_buttons].active_low = 1; gpio_keys[n_buttons].desc = info->name; gpio_keys[n_buttons].wakeup = info->wakeup; + /* These devices often use cheap buttons, use 50 ms debounce */ + gpio_keys[n_buttons].debounce_interval = 50; n_buttons++; } |