--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * HID driver for Sony DualSense(TM) controller.
+ *
+ * Copyright (c) 2020 Sony Interactive Entertainment
+ */
+
+#include <linux/bits.h>
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/input/mt.h>
+#include <linux/module.h>
+
+#include <asm/unaligned.h>
+
+#include "hid-ids.h"
+
+#define HID_PLAYSTATION_VERSION_PATCH 0x8000
+
+/* Base class for playstation devices. */
+struct ps_device {
+ struct hid_device *hdev;
+
+ int (*parse_report)(struct ps_device *dev, struct hid_report *report, u8 *data, int size);
+};
+
+#define DS_INPUT_REPORT_USB 0x01
+#define DS_INPUT_REPORT_USB_SIZE 64
+
+/* Button masks for DualSense input report. */
+#define DS_BUTTONS0_HAT_SWITCH GENMASK(3, 0)
+#define DS_BUTTONS0_SQUARE BIT(4)
+#define DS_BUTTONS0_CROSS BIT(5)
+#define DS_BUTTONS0_CIRCLE BIT(6)
+#define DS_BUTTONS0_TRIANGLE BIT(7)
+#define DS_BUTTONS1_L1 BIT(0)
+#define DS_BUTTONS1_R1 BIT(1)
+#define DS_BUTTONS1_L2 BIT(2)
+#define DS_BUTTONS1_R2 BIT(3)
+#define DS_BUTTONS1_CREATE BIT(4)
+#define DS_BUTTONS1_OPTIONS BIT(5)
+#define DS_BUTTONS1_L3 BIT(6)
+#define DS_BUTTONS1_R3 BIT(7)
+#define DS_BUTTONS2_PS_HOME BIT(0)
+#define DS_BUTTONS2_TOUCHPAD BIT(1)
+
+struct dualsense {
+ struct ps_device base;
+ struct input_dev *gamepad;
+};
+
+struct dualsense_touch_point {
+ uint8_t contact;
+ uint8_t x_lo;
+ uint8_t x_hi:4, y_lo:4;
+ uint8_t y_hi;
+} __packed;
+static_assert(sizeof(struct dualsense_touch_point) == 4);
+
+/* Main DualSense input report excluding any BT/USB specific headers. */
+struct dualsense_input_report {
+ uint8_t x, y;
+ uint8_t rx, ry;
+ uint8_t z, rz;
+ uint8_t seq_number;
+ uint8_t buttons[4];
+ uint8_t reserved[4];
+
+ /* Motion sensors */
+ __le16 gyro[3]; /* x, y, z */
+ __le16 accel[3]; /* x, y, z */
+ __le32 sensor_timestamp;
+ uint8_t reserved2;
+
+ /* Touchpad */
+ struct dualsense_touch_point points[2];
+
+ uint8_t reserved3[12];
+ uint8_t status;
+ uint8_t reserved4[10];
+} __packed;
+/* Common input report size shared equals the size of the USB report minus 1 byte for ReportID. */
+static_assert(sizeof(struct dualsense_input_report) == DS_INPUT_REPORT_USB_SIZE - 1);
+
+/*
+ * Common gamepad buttons across DualShock 3 / 4 and DualSense.
+ * Note: for device with a touchpad, touchpad button is not included
+ * as it will be part of the touchpad device.
+ */
+static const int ps_gamepad_buttons[] = {
+ BTN_WEST, /* Square */
+ BTN_NORTH, /* Triangle */
+ BTN_EAST, /* Circle */
+ BTN_SOUTH, /* Cross */
+ BTN_TL, /* L1 */
+ BTN_TR, /* R1 */
+ BTN_TL2, /* L2 */
+ BTN_TR2, /* R2 */
+ BTN_SELECT, /* Create (PS5) / Share (PS4) */
+ BTN_START, /* Option */
+ BTN_THUMBL, /* L3 */
+ BTN_THUMBR, /* R3 */
+ BTN_MODE, /* PS Home */
+};
+
+static const struct {int x; int y; } ps_gamepad_hat_mapping[] = {
+ {0, -1}, {1, -1}, {1, 0}, {1, 1}, {0, 1}, {-1, 1}, {-1, 0}, {-1, -1},
+ {0, 0},
+};
+
+static struct input_dev *ps_allocate_input_dev(struct hid_device *hdev, const char *name_suffix)
+{
+ struct input_dev *input_dev;
+
+ input_dev = devm_input_allocate_device(&hdev->dev);
+ if (!input_dev)
+ return ERR_PTR(-ENOMEM);
+
+ input_dev->id.bustype = hdev->bus;
+ input_dev->id.vendor = hdev->vendor;
+ input_dev->id.product = hdev->product;
+ input_dev->id.version = hdev->version;
+ input_dev->uniq = hdev->uniq;
+
+ if (name_suffix) {
+ input_dev->name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s %s", hdev->name,
+ name_suffix);
+ if (!input_dev->name)
+ return ERR_PTR(-ENOMEM);
+ } else {
+ input_dev->name = hdev->name;
+ }
+
+ input_set_drvdata(input_dev, hdev);
+
+ return input_dev;
+}
+
+static struct input_dev *ps_gamepad_create(struct hid_device *hdev)
+{
+ struct input_dev *gamepad;
+ unsigned int i;
+ int ret;
+
+ gamepad = ps_allocate_input_dev(hdev, NULL);
+ if (IS_ERR(gamepad))
+ return ERR_CAST(gamepad);
+
+ input_set_abs_params(gamepad, ABS_X, 0, 255, 0, 0);
+ input_set_abs_params(gamepad, ABS_Y, 0, 255, 0, 0);
+ input_set_abs_params(gamepad, ABS_Z, 0, 255, 0, 0);
+ input_set_abs_params(gamepad, ABS_RX, 0, 255, 0, 0);
+ input_set_abs_params(gamepad, ABS_RY, 0, 255, 0, 0);
+ input_set_abs_params(gamepad, ABS_RZ, 0, 255, 0, 0);
+
+ input_set_abs_params(gamepad, ABS_HAT0X, -1, 1, 0, 0);
+ input_set_abs_params(gamepad, ABS_HAT0Y, -1, 1, 0, 0);
+
+ for (i = 0; i < ARRAY_SIZE(ps_gamepad_buttons); i++)
+ input_set_capability(gamepad, EV_KEY, ps_gamepad_buttons[i]);
+
+ ret = input_register_device(gamepad);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return gamepad;
+}
+
+static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *report,
+ u8 *data, int size)
+{
+ struct hid_device *hdev = ps_dev->hdev;
+ struct dualsense *ds = container_of(ps_dev, struct dualsense, base);
+ struct dualsense_input_report *ds_report;
+ uint8_t value;
+
+ /*
+ * DualSense in USB uses the full HID report for reportID 1, but
+ * Bluetooth uses a minimal HID report for reportID 1 and reports
+ * the full report using reportID 49.
+ */
+ if (hdev->bus == BUS_USB && report->id == DS_INPUT_REPORT_USB &&
+ size == DS_INPUT_REPORT_USB_SIZE) {
+ ds_report = (struct dualsense_input_report *)&data[1];
+ } else {
+ hid_err(hdev, "Unhandled reportID=%d\n", report->id);
+ return -1;
+ }
+
+ input_report_abs(ds->gamepad, ABS_X, ds_report->x);
+ input_report_abs(ds->gamepad, ABS_Y, ds_report->y);
+ input_report_abs(ds->gamepad, ABS_RX, ds_report->rx);
+ input_report_abs(ds->gamepad, ABS_RY, ds_report->ry);
+ input_report_abs(ds->gamepad, ABS_Z, ds_report->z);
+ input_report_abs(ds->gamepad, ABS_RZ, ds_report->rz);
+
+ value = ds_report->buttons[0] & DS_BUTTONS0_HAT_SWITCH;
+ if (value > ARRAY_SIZE(ps_gamepad_hat_mapping))
+ value = 8; /* center */
+ input_report_abs(ds->gamepad, ABS_HAT0X, ps_gamepad_hat_mapping[value].x);
+ input_report_abs(ds->gamepad, ABS_HAT0Y, ps_gamepad_hat_mapping[value].y);
+
+ input_report_key(ds->gamepad, BTN_WEST, ds_report->buttons[0] & DS_BUTTONS0_SQUARE);
+ input_report_key(ds->gamepad, BTN_SOUTH, ds_report->buttons[0] & DS_BUTTONS0_CROSS);
+ input_report_key(ds->gamepad, BTN_EAST, ds_report->buttons[0] & DS_BUTTONS0_CIRCLE);
+ input_report_key(ds->gamepad, BTN_NORTH, ds_report->buttons[0] & DS_BUTTONS0_TRIANGLE);
+ input_report_key(ds->gamepad, BTN_TL, ds_report->buttons[1] & DS_BUTTONS1_L1);
+ input_report_key(ds->gamepad, BTN_TR, ds_report->buttons[1] & DS_BUTTONS1_R1);
+ input_report_key(ds->gamepad, BTN_TL2, ds_report->buttons[1] & DS_BUTTONS1_L2);
+ input_report_key(ds->gamepad, BTN_TR2, ds_report->buttons[1] & DS_BUTTONS1_R2);
+ input_report_key(ds->gamepad, BTN_SELECT, ds_report->buttons[1] & DS_BUTTONS1_CREATE);
+ input_report_key(ds->gamepad, BTN_START, ds_report->buttons[1] & DS_BUTTONS1_OPTIONS);
+ input_report_key(ds->gamepad, BTN_THUMBL, ds_report->buttons[1] & DS_BUTTONS1_L3);
+ input_report_key(ds->gamepad, BTN_THUMBR, ds_report->buttons[1] & DS_BUTTONS1_R3);
+ input_report_key(ds->gamepad, BTN_MODE, ds_report->buttons[2] & DS_BUTTONS2_PS_HOME);
+ input_sync(ds->gamepad);
+
+ return 0;
+}
+
+static struct ps_device *dualsense_create(struct hid_device *hdev)
+{
+ struct dualsense *ds;
+ int ret;
+
+ ds = devm_kzalloc(&hdev->dev, sizeof(*ds), GFP_KERNEL);
+ if (!ds)
+ return ERR_PTR(-ENOMEM);
+
+ /*
+ * Patch version to allow userspace to distinguish between
+ * hid-generic vs hid-playstation axis and button mapping.
+ */
+ hdev->version |= HID_PLAYSTATION_VERSION_PATCH;
+
+ ds->base.hdev = hdev;
+ ds->base.parse_report = dualsense_parse_report;
+ hid_set_drvdata(hdev, ds);
+
+ ds->gamepad = ps_gamepad_create(hdev);
+ if (IS_ERR(ds->gamepad)) {
+ ret = PTR_ERR(ds->gamepad);
+ goto err;
+ }
+
+ return &ds->base;
+
+err:
+ return ERR_PTR(ret);
+}
+
+static int ps_raw_event(struct hid_device *hdev, struct hid_report *report,
+ u8 *data, int size)
+{
+ struct ps_device *dev = hid_get_drvdata(hdev);
+
+ if (dev && dev->parse_report)
+ return dev->parse_report(dev, report, data, size);
+
+ return 0;
+}
+
+static int ps_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ struct ps_device *dev;
+ int ret;
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "Parse failed\n");
+ return ret;
+ }
+
+ ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
+ if (ret) {
+ hid_err(hdev, "Failed to start HID device\n");
+ return ret;
+ }
+
+ ret = hid_hw_open(hdev);
+ if (ret) {
+ hid_err(hdev, "Failed to open HID device\n");
+ goto err_stop;
+ }
+
+ if (hdev->product == USB_DEVICE_ID_SONY_PS5_CONTROLLER) {
+ dev = dualsense_create(hdev);
+ if (IS_ERR(dev)) {
+ hid_err(hdev, "Failed to create dualsense.\n");
+ ret = PTR_ERR(dev);
+ goto err_close;
+ }
+ }
+
+ return ret;
+
+err_close:
+ hid_hw_close(hdev);
+err_stop:
+ hid_hw_stop(hdev);
+ return ret;
+}
+
+static void ps_remove(struct hid_device *hdev)
+{
+ hid_hw_close(hdev);
+ hid_hw_stop(hdev);
+}
+
+static const struct hid_device_id ps_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS5_CONTROLLER) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, ps_devices);
+
+static struct hid_driver ps_driver = {
+ .name = "playstation",
+ .id_table = ps_devices,
+ .probe = ps_probe,
+ .remove = ps_remove,
+ .raw_event = ps_raw_event,
+};
+
+module_hid_driver(ps_driver);
+
+MODULE_AUTHOR("Sony Interactive Entertainment");
+MODULE_DESCRIPTION("HID Driver for PlayStation peripherals.");
+MODULE_LICENSE("GPL");
projects / linux-2.6-microblaze.git / commitdiff