From a77efca3aa85e382b52b587ca9976c0f8e11d49c Mon Sep 17 00:00:00 2001 From: Angela Czubak Date: Mon, 18 Aug 2025 23:08:49 +0000 Subject: [PATCH] HID: haptic: add functions handling events 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 Co-developed-by: Jonathan Denose Signed-off-by: Jonathan Denose Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-haptic.c | 20 +++++++++++++++++++- drivers/hid/hid-haptic.h | 15 +++++++++++++++ 2 files changed, 34 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-haptic.c b/drivers/hid/hid-haptic.c index ef09b4039f33..c02af820051c 100644 --- a/drivers/hid/hid-haptic.c +++ b/drivers/hid/hid-haptic.c @@ -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 @@ exit: 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); diff --git a/drivers/hid/hid-haptic.h b/drivers/hid/hid-haptic.h index 25e0e2cef939..abdd7d710c0b 100644 --- a/drivers/hid/hid-haptic.h +++ b/drivers/hid/hid-haptic.h @@ -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 + -- 2.47.3