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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2017-04-18 17:28:30 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2019-08-20 12:04:07 -0700
commite95656ea15e54d4e6a192d560d84008b53fc1eb5 (patch)
tree0470cd10f6a489669c8a8ac5a99526ead4257e4f /include/linux/input.h
parent2da9d2b5b9d64cf5228dd3fb4d1220ff3fec8440 (diff)
downloadlwn-e95656ea15e54d4e6a192d560d84008b53fc1eb5.tar.gz
lwn-e95656ea15e54d4e6a192d560d84008b53fc1eb5.zip
Input: add support for polling to input devices
Separating "normal" and "polled" input devices was a mistake, as often we want to allow the very same device work on both interrupt-driven and polled mode, depending on the board on which the device is used. This introduces new APIs: - input_setup_polling - input_set_poll_interval - input_set_min_poll_interval - input_set_max_poll_interval These new APIs allow switching an input device into polled mode with sysfs attributes matching drivers using input_polled_dev APIs that will be eventually removed. Tested-by: Michal Vokáč <michal.vokac@ysoft.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'include/linux/input.h')
-rw-r--r--include/linux/input.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/input.h b/include/linux/input.h
index e95a439d8bd5..94f277cd806a 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -21,6 +21,8 @@
#include <linux/timer.h>
#include <linux/mod_devicetable.h>
+struct input_dev_poller;
+
/**
* struct input_value - input value representation
* @type: type of value (EV_KEY, EV_ABS, etc)
@@ -71,6 +73,8 @@ enum input_clock_type {
* not sleep
* @ff: force feedback structure associated with the device if device
* supports force feedback effects
+ * @poller: poller structure associated with the device if device is
+ * set up to use polling mode
* @repeat_key: stores key code of the last key pressed; used to implement
* software autorepeat
* @timer: timer for software autorepeat
@@ -156,6 +160,8 @@ struct input_dev {
struct ff_device *ff;
+ struct input_dev_poller *poller;
+
unsigned int repeat_key;
struct timer_list timer;
@@ -372,6 +378,12 @@ void input_unregister_device(struct input_dev *);
void input_reset_device(struct input_dev *);
+int input_setup_polling(struct input_dev *dev,
+ void (*poll_fn)(struct input_dev *dev));
+void input_set_poll_interval(struct input_dev *dev, unsigned int interval);
+void input_set_min_poll_interval(struct input_dev *dev, unsigned int interval);
+void input_set_max_poll_interval(struct input_dev *dev, unsigned int interval);
+
int __must_check input_register_handler(struct input_handler *);
void input_unregister_handler(struct input_handler *);