github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-12 16:18:45 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

HID: haptic: add functions handling events

Browse Source 
Implement hid_haptic_handle_press_release() which generates haptic feedback
as well as saves the pressed state of the haptic device.
Add functions to increase and reset the state of the pressure detected by
the device.

Signed-off-by: Angela Czubak <aczubak@google.com>
Co-developed-by: Jonathan Denose <jdenose@google.com>
Signed-off-by: Jonathan Denose <jdenose@google.com>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This commit is contained in:
Angela Czubak 2025-08-18 23:08:49 +00:00 committed by Benjamin Tissoires
parent 7657bf0b7c
commit a77efca3aa
2 changed files with 34 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/hid/hid-haptic.c
View File

@ -50,8 +50,13 @@ EXPORT_SYMBOL_GPL(hid_haptic_feature_mapping);
bool hid_haptic_check_pressure_unit(struct hid_haptic_device *haptic,
struct hid_input *hi, struct hid_field *field)
{
if (field->unit == HID_UNIT_GRAM || field->unit == HID_UNIT_NEWTON)
if (field->unit == HID_UNIT_GRAM || field->unit == HID_UNIT_NEWTON) {
haptic->force_logical_minimum = field->logical_minimum;
haptic->force_physical_minimum = field->physical_minimum;
haptic->force_resolution = input_abs_get_res(hi->input,
ABS_MT_PRESSURE);
return true;
}
return false;
}
EXPORT_SYMBOL_GPL(hid_haptic_check_pressure_unit);
@ -508,3 +513,16 @@ int hid_haptic_init(struct hid_device *hdev,
return ret;
}
EXPORT_SYMBOL_GPL(hid_haptic_init);
void hid_haptic_pressure_reset(struct hid_haptic_device *haptic)
{
haptic->pressure_sum = 0;
}
EXPORT_SYMBOL_GPL(hid_haptic_pressure_reset);
void hid_haptic_pressure_increase(struct hid_haptic_device *haptic,
__s32 pressure)
{
haptic->pressure_sum += pressure;
}
EXPORT_SYMBOL_GPL(hid_haptic_pressure_increase);

15
drivers/hid/hid-haptic.h
View File

@ -70,6 +70,10 @@ int hid_haptic_input_configured(struct hid_device *hdev,
struct hid_haptic_device *haptic,
struct hid_input *hi);
int hid_haptic_init(struct hid_device *hdev, struct hid_haptic_device **haptic_ptr);
void hid_haptic_handle_press_release(struct hid_haptic_device *haptic);
void hid_haptic_pressure_reset(struct hid_haptic_device *haptic);
void hid_haptic_pressure_increase(struct hid_haptic_device *haptic,
__s32 pressure);
#else
static inline
void hid_haptic_feature_mapping(struct hid_device *hdev,
@ -103,4 +107,15 @@ int hid_haptic_init(struct hid_device *hdev, struct hid_haptic_device **haptic_p
{
return 0;
}
static inline
void hid_haptic_handle_press_release(struct hid_haptic_device *haptic)
{}
static inline
void hid_haptic_pressure_reset(struct hid_haptic_device *haptic)
{}
static inline
void hid_haptic_pressure_increase(struct hid_haptic_device *haptic,
__s32 pressure)
{}
#endif