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Unverified Commit 46cefc1c authored by Roderick Colenbrander's avatar Roderick Colenbrander Committed by Michael Bestas
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UPSTREAM: HID: playstation: add DualSense touchpad support. 



Implement support for DualSense touchpad as a separate input device.

Signed-off-by: default avatarRoderick Colenbrander <roderick.colenbrander@sony.com>
Reviewed-by: default avatarBarnabás Pőcze <pobrn@protonmail.com>
Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>

Bug: 167947264
Change-Id: I59b1d77b1d778366d05f5a929bbb205127914304
(cherry picked from commit f6bb05fcb2a10ff26ac5af1c29066d42019dc464)
Signed-off-by: default avatarFarid Chahla <farid.chahla@sony.com>
parent 59243dfe

drivers/hid/hid-playstation.c

+66 −0
Original line number Diff line number Diff line
@@ -60,9 +60,21 @@ struct ps_device { 
#define DS_STATUS_CHARGING		GENMASK(7, 4)

#define DS_STATUS_CHARGING_SHIFT	4



/*

 * Status of a DualSense touch point contact.

 * Contact IDs, with highest bit set are 'inactive'

 * and any associated data is then invalid.

 */

#define DS_TOUCH_POINT_INACTIVE BIT(7)



/* DualSense hardware limits */

#define DS_TOUCHPAD_WIDTH	1920

#define DS_TOUCHPAD_HEIGHT	1080



struct dualsense {

	struct ps_device base;

	struct input_dev *gamepad;

	struct input_dev *touchpad;

};



struct dualsense_touch_point {
@@ -278,6 +290,34 @@ static int ps_get_report(struct hid_device *hdev, uint8_t report_id, uint8_t *bu 
	return 0;

}



static struct input_dev *ps_touchpad_create(struct hid_device *hdev, int width, int height,

		unsigned int num_contacts)

{

	struct input_dev *touchpad;

	int ret;



	touchpad = ps_allocate_input_dev(hdev, "Touchpad");

	if (IS_ERR(touchpad))

		return ERR_CAST(touchpad);



	/* Map button underneath touchpad to BTN_LEFT. */

	input_set_capability(touchpad, EV_KEY, BTN_LEFT);

	__set_bit(INPUT_PROP_BUTTONPAD, touchpad->propbit);



	input_set_abs_params(touchpad, ABS_MT_POSITION_X, 0, width - 1, 0, 0);

	input_set_abs_params(touchpad, ABS_MT_POSITION_Y, 0, height - 1, 0, 0);



	ret = input_mt_init_slots(touchpad, num_contacts, INPUT_MT_POINTER);

	if (ret)

		return ERR_PTR(ret);



	ret = input_register_device(touchpad);

	if (ret)

		return ERR_PTR(ret);



	return touchpad;

}



static int dualsense_get_mac_address(struct dualsense *ds)

{

	uint8_t *buf;
@@ -310,6 +350,7 @@ static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *r 
	uint8_t battery_data, battery_capacity, charging_status, value;

	int battery_status;

	unsigned long flags;

	int i;



	/*

	 * DualSense in USB uses the full HID report for reportID 1, but
@@ -352,6 +393,25 @@ static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *r 
	input_report_key(ds->gamepad, BTN_MODE,   ds_report->buttons[2] & DS_BUTTONS2_PS_HOME);

	input_sync(ds->gamepad);



	for (i = 0; i < ARRAY_SIZE(ds_report->points); i++) {

		struct dualsense_touch_point *point = &ds_report->points[i];

		bool active = (point->contact & DS_TOUCH_POINT_INACTIVE) ? false : true;



		input_mt_slot(ds->touchpad, i);

		input_mt_report_slot_state(ds->touchpad, MT_TOOL_FINGER, active);



		if (active) {

			int x = (point->x_hi << 8) | point->x_lo;

			int y = (point->y_hi << 4) | point->y_lo;



			input_report_abs(ds->touchpad, ABS_MT_POSITION_X, x);

			input_report_abs(ds->touchpad, ABS_MT_POSITION_Y, y);

		}

	}

	input_mt_sync_frame(ds->touchpad);

	input_report_key(ds->touchpad, BTN_LEFT, ds_report->buttons[2] & DS_BUTTONS2_TOUCHPAD);

	input_sync(ds->touchpad);



	battery_data = ds_report->status & DS_STATUS_BATTERY_CAPACITY;

	charging_status = (ds_report->status & DS_STATUS_CHARGING) >> DS_STATUS_CHARGING_SHIFT;
@@ -428,6 +488,12 @@ static struct ps_device *dualsense_create(struct hid_device *hdev) 
		goto err;

	}



	ds->touchpad = ps_touchpad_create(hdev, DS_TOUCHPAD_WIDTH, DS_TOUCHPAD_HEIGHT, 2);

	if (IS_ERR(ds->touchpad)) {

		ret = PTR_ERR(ds->touchpad);

		goto err;

	}



	ret = ps_device_register_battery(ps_dev);

	if (ret)

		goto err;