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Lakka-LibreELEC/packages/linux/patches/.backup_patches/Lakka-default/v6-04-13-HID-playstation-add-DualSense-touchpad-support.patch
2023-01-13 23:03:38 +01:00

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From: Roderick Colenbrander <roderick@gaikai.com>
To: Jiri Kosina <jikos@kernel.org>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: linux-input@vger.kernel.org, Chris Ye <lzye@google.com>, =?utf-8?q?Barna?=
=?utf-8?q?b=C3=A1s_P=C5=91cze?= <pobrn@protonmail.com>, =?utf-8?q?Samuel_?=
=?utf-8?q?=C4=8Cavoj?= <sammko@sammserver.com>, =?utf-8?q?Florian_M=C3=A4rk?=
=?utf-8?q?l?= <linux@florianmaerkl.de>,
Roderick Colenbrander <roderick.colenbrander@sony.com>
Subject: [PATCH v6 04/13] HID: playstation: add DualSense touchpad support.
Date: Sun, 7 Feb 2021 13:48:59 -0800
Message-Id: <20210207214908.79573-5-roderick@gaikai.com>
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List-ID: <linux-input.vger.kernel.org>
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From: Roderick Colenbrander <roderick.colenbrander@sony.com>
Implement support for DualSense touchpad as a separate input device.
Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
---
drivers/hid/hid-playstation.c | 66 +++++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
diff --git a/drivers/hid/hid-playstation.c b/drivers/hid/hid-playstation.c
index 3bb5091be308..30ae9434240c 100644
--- a/drivers/hid/hid-playstation.c
+++ b/drivers/hid/hid-playstation.c
@@ -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;