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HID: playstation: add DualSense touchpad support.

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Implement support for DualSense touchpad as a separate input device.

Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Reviewed-by: Barnabás Pőcze <pobrn@protonmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This commit is contained in:
Roderick Colenbrander 2021-02-07 13:48:59 -08:00 committed by Benjamin Tissoires
parent d30bca4480
commit f6bb05fcb2
1 changed files with 66 additions and 0 deletions
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66
drivers/hid/hid-playstation.c
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@ -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 {
@ -281,6 +293,34 @@ 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;
@ -313,6 +353,7 @@ 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
@ -355,6 +396,25 @@ 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;
@ -431,6 +491,12 @@ 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;