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Input: add FF_HAPTIC effect type

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FF_HAPTIC effect type can be used to trigger haptic feedback with HID
simple haptic usages.

Signed-off-by: Angela Czubak <aczubak@google.com>
Co-developed-by: Jonathan Denose <jdenose@google.com>
Signed-off-by: Jonathan Denose <jdenose@google.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This commit is contained in:
Angela Czubak 2025-08-18 23:08:43 +00:00 committed by Benjamin Tissoires
parent 5e0ae59159
commit 08a72a220e
1 changed files with 21 additions and 1 deletions
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22
include/uapi/linux/input.h
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@ -429,6 +429,24 @@ struct ff_rumble_effect {
__u16 weak_magnitude;
};
/**
* struct ff_haptic_effect
* @hid_usage: hid_usage according to Haptics page (WAVEFORM_CLICK, etc.)
* @vendor_id: the waveform vendor ID if hid_usage is in the vendor-defined range
* @vendor_waveform_page: the vendor waveform page if hid_usage is in the vendor-defined range
* @intensity: strength of the effect as percentage
* @repeat_count: number of times to retrigger effect
* @retrigger_period: time before effect is retriggered (in ms)
*/
struct ff_haptic_effect {
__u16 hid_usage;
__u16 vendor_id;
__u8 vendor_waveform_page;
__u16 intensity;
__u16 repeat_count;
__u16 retrigger_period;
};
/**
* struct ff_effect - defines force feedback effect
* @type: type of the effect (FF_CONSTANT, FF_PERIODIC, FF_RAMP, FF_SPRING,
@ -465,6 +483,7 @@ struct ff_effect {
struct ff_periodic_effect periodic;
struct ff_condition_effect condition[2]; /* One for each axis */
struct ff_rumble_effect rumble;
struct ff_haptic_effect haptic;
} u;
};
@ -472,6 +491,7 @@ struct ff_effect {
* Force feedback effect types
*/
#define FF_HAPTIC 0x4f
#define FF_RUMBLE 0x50
#define FF_PERIODIC 0x51
#define FF_CONSTANT 0x52
@ -481,7 +501,7 @@ struct ff_effect {
#define FF_INERTIA 0x56
#define FF_RAMP 0x57
#define FF_EFFECT_MIN FF_RUMBLE
#define FF_EFFECT_MIN FF_HAPTIC
#define FF_EFFECT_MAX FF_RAMP
/*