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Input: export input_default_setkeycode 

Export input_default_setkeycode so that a driver can set a custom
setkeycode handler to take some driver specific action but still call
the default handler at some point.

Signed-off-by: Fabio Baltieri <fabiobaltieri@chromium.org>
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://patch.msgid.link/20260222003717.471977-1-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
master
Fabio Baltieri 2026-02-23 13:25:55 -08:00 committed by Dmitry Torokhov
parent de71627594
commit 3d35d41169
2 changed files with 24 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/input/input.c
View File

@ -800,14 +800,30 @@ static int input_default_getkeycode(struct input_dev *dev,
return 0;
}
static int input_default_setkeycode(struct input_dev *dev,
const struct input_keymap_entry *ke,
unsigned int *old_keycode)
/**
* input_default_setkeycode - default setkeycode method
* @dev: input device which keymap is being updated.
* @ke: new keymap entry.
* @old_keycode: pointer to the location where old keycode should be stored.
*
* This function is the default implementation of &input_dev.setkeycode()
* method. It is typically used when a driver does not provide its own
* implementation, but it is also exported so drivers can extend it.
*
* The function must be called with &input_dev.event_lock held.
*
* Return: 0 on success, or a negative error code on failure.
*/
int input_default_setkeycode(struct input_dev *dev,
const struct input_keymap_entry *ke,
unsigned int *old_keycode)
{
unsigned int index;
int error;
int i;
lockdep_assert_held(&dev->event_lock);
if (!dev->keycodesize)
return -EINVAL;
@ -861,6 +877,7 @@ static int input_default_setkeycode(struct input_dev *dev,
__set_bit(ke->keycode, dev->keybit);
return 0;
}
EXPORT_SYMBOL(input_default_setkeycode);
/**
* input_get_keycode - retrieve keycode currently mapped to a given scancode

4
include/linux/input.h
View File

@ -517,6 +517,10 @@ INPUT_GENERATE_ABS_ACCESSORS(res, resolution)
int input_scancode_to_scalar(const struct input_keymap_entry *ke,
unsigned int *scancode);
int input_default_setkeycode(struct input_dev *dev,
const struct input_keymap_entry *ke,
unsigned int *old_keycode);
int input_get_keycode(struct input_dev *dev, struct input_keymap_entry *ke);
int input_set_keycode(struct input_dev *dev,
const struct input_keymap_entry *ke);