@@ -863,6 +863,14 @@ config HID_PLAYSTATION
its special functionalities e.g. touchpad, lights and motion
sensors.
+config PLAYSTATION_FF
+ bool "PlayStation force feedback support"
+ depends on HID_PLAYSTATION
+ select INPUT_FF_MEMLESS
+ help
+ Say Y here if you would like to enable force feedback support for
+ PlayStation game controllers.
+
config HID_PRIMAX
tristate "Primax non-fully HID-compliant devices"
depends on HID
@@ -48,12 +48,17 @@ struct ps_calibration_data {
/* Seed values for DualShock4 / DualSense CRC32 for different report types. */
#define PS_INPUT_CRC32_SEED 0xA1
+#define PS_OUTPUT_CRC32_SEED 0xA2
#define PS_FEATURE_CRC32_SEED 0xA3
#define DS_INPUT_REPORT_USB 0x01
#define DS_INPUT_REPORT_USB_SIZE 64
#define DS_INPUT_REPORT_BT 0x31
#define DS_INPUT_REPORT_BT_SIZE 78
+#define DS_OUTPUT_REPORT_USB 0x02
+#define DS_OUTPUT_REPORT_USB_SIZE 63
+#define DS_OUTPUT_REPORT_BT 0x31
+#define DS_OUTPUT_REPORT_BT_SIZE 78
#define DS_FEATURE_REPORT_CALIBRATION 0x05
#define DS_FEATURE_REPORT_CALIBRATION_SIZE 41
@@ -89,6 +94,12 @@ struct ps_calibration_data {
*/
#define DS_TOUCH_POINT_INACTIVE BIT(7)
+ /* Magic value required in tag field of Bluetooth output report. */
+#define DS_OUTPUT_TAG 0x10
+/* Flags for DualSense output report. */
+#define DS_OUTPUT_VALID_FLAG0_COMPATIBLE_VIBRATION BIT(0)
+#define DS_OUTPUT_VALID_FLAG0_HAPTICS_SELECT BIT(1)
+
/* DualSense hardware limits */
#define DS_ACC_RES_PER_G 8192
#define DS_ACC_RANGE (4*DS_ACC_RES_PER_G)
@@ -111,6 +122,15 @@ struct dualsense {
bool sensor_timestamp_initialized;
uint32_t prev_sensor_timestamp;
uint32_t sensor_timestamp_us;
+
+ /* Compatible rumble state */
+ bool update_rumble;
+ uint8_t motor_left;
+ uint8_t motor_right;
+
+ struct work_struct output_worker;
+ void *output_report_dmabuf;
+ uint8_t output_seq; /* Sequence number for output report. */
};
struct dualsense_touch_point {
@@ -146,6 +166,68 @@ struct dualsense_input_report {
/* 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 data between DualSense BT/USB main output report. */
+struct dualsense_output_report_common {
+ uint8_t valid_flag0;
+ uint8_t valid_flag1;
+
+ /* For DualShock 4 compatibility mode. */
+ uint8_t motor_right;
+ uint8_t motor_left;
+
+ /* Audio controls */
+ uint8_t reserved[4];
+ uint8_t mute_button_led;
+
+ uint8_t power_save_control;
+ uint8_t reserved2[28];
+
+ /* LEDs and lightbar */
+ uint8_t valid_flag2;
+ uint8_t reserved3[2];
+ uint8_t lightbar_setup;
+ uint8_t led_brightness;
+ uint8_t player_leds;
+ uint8_t lightbar_red;
+ uint8_t lightbar_green;
+ uint8_t lightbar_blue;
+} __packed;
+static_assert(sizeof(struct dualsense_output_report_common) == 47);
+
+struct dualsense_output_report_bt {
+ uint8_t report_id; /* 0x31 */
+ uint8_t seq_tag;
+ uint8_t tag;
+ struct dualsense_output_report_common common;
+ uint8_t reserved[24];
+ __le32 crc32;
+} __packed;
+static_assert(sizeof(struct dualsense_output_report_bt) == DS_OUTPUT_REPORT_BT_SIZE);
+
+struct dualsense_output_report_usb {
+ uint8_t report_id; /* 0x02 */
+ struct dualsense_output_report_common common;
+ uint8_t reserved[15];
+} __packed;
+static_assert(sizeof(struct dualsense_output_report_usb) == DS_OUTPUT_REPORT_USB_SIZE);
+
+/*
+ * The DualSense has a main output report used to control most features. It is
+ * largely the same between Bluetooth and USB except for different headers and CRC.
+ * This structure hide the differences between the two to simplify sending output reports.
+ */
+struct dualsense_output_report {
+ uint8_t *data; /* Start of data */
+ uint8_t len; /* Size of output report */
+
+ /* Points to Bluetooth data payload in case for a Bluetooth report else NULL. */
+ struct dualsense_output_report_bt *bt;
+ /* Points to USB data payload in case for a USB report else NULL. */
+ struct dualsense_output_report_usb *usb;
+ /* Points to common section of report, so past any headers. */
+ struct dualsense_output_report_common *common;
+};
+
/*
* Common gamepad buttons across DualShock 3 / 4 and DualSense.
* Note: for device with a touchpad, touchpad button is not included
@@ -318,7 +400,8 @@ static bool ps_check_crc32(uint8_t seed, uint8_t *data, size_t len, uint32_t rep
return crc == report_crc;
}
-static struct input_dev *ps_gamepad_create(struct hid_device *hdev)
+static struct input_dev *ps_gamepad_create(struct hid_device *hdev,
+ int (*play_effect)(struct input_dev *, void *, struct ff_effect *))
{
struct input_dev *gamepad;
unsigned int i;
@@ -341,6 +424,13 @@ static struct input_dev *ps_gamepad_create(struct hid_device *hdev)
for (i = 0; i < ARRAY_SIZE(ps_gamepad_buttons); i++)
input_set_capability(gamepad, EV_KEY, ps_gamepad_buttons[i]);
+#if IS_ENABLED(CONFIG_PLAYSTATION_FF)
+ if (play_effect) {
+ input_set_capability(gamepad, EV_FF, FF_RUMBLE);
+ input_ff_create_memless(gamepad, NULL, play_effect);
+ }
+#endif
+
ret = input_register_device(gamepad);
if (ret)
return ERR_PTR(ret);
@@ -561,6 +651,94 @@ static int dualsense_get_mac_address(struct dualsense *ds)
return ret;
}
+static void dualsense_init_output_report(struct dualsense *ds, struct dualsense_output_report *rp,
+ void *buf)
+{
+ struct hid_device *hdev = ds->base.hdev;
+
+ if (hdev->bus == BUS_BLUETOOTH) {
+ struct dualsense_output_report_bt *bt = buf;
+
+ memset(bt, 0, sizeof(*bt));
+ bt->report_id = DS_OUTPUT_REPORT_BT;
+ bt->tag = DS_OUTPUT_TAG; /* Tag must be set. Exact meaning is unclear. */
+
+ /*
+ * Highest 4-bit is a sequence number, which needs to be increased
+ * every report. Lowest 4-bit is tag and can be zero for now.
+ */
+ bt->seq_tag = (ds->output_seq << 4) | 0x0;
+ if (++ds->output_seq == 16)
+ ds->output_seq = 0;
+
+ rp->data = buf;
+ rp->len = sizeof(*bt);
+ rp->bt = bt;
+ rp->usb = NULL;
+ rp->common = &bt->common;
+ } else { /* USB */
+ struct dualsense_output_report_usb *usb = buf;
+
+ memset(usb, 0, sizeof(*usb));
+ usb->report_id = DS_OUTPUT_REPORT_USB;
+
+ rp->data = buf;
+ rp->len = sizeof(*usb);
+ rp->bt = NULL;
+ rp->usb = usb;
+ rp->common = &usb->common;
+ }
+}
+
+/*
+ * Helper function to send DualSense output reports. Applies a CRC at the end of a report
+ * for Bluetooth reports.
+ */
+static void dualsense_send_output_report(struct dualsense *ds,
+ struct dualsense_output_report *report)
+{
+ struct hid_device *hdev = ds->base.hdev;
+
+ /* Bluetooth packets need to be signed with a CRC in the last 4 bytes. */
+ if (report->bt) {
+ uint32_t crc;
+ uint8_t seed = PS_OUTPUT_CRC32_SEED;
+
+ crc = crc32_le(0xFFFFFFFF, &seed, 1);
+ crc = ~crc32_le(crc, report->data, report->len - 4);
+
+ report->bt->crc32 = cpu_to_le32(crc);
+ }
+
+ hid_hw_output_report(hdev, report->data, report->len);
+}
+
+static void dualsense_output_worker(struct work_struct *work)
+{
+ struct dualsense *ds = container_of(work, struct dualsense, output_worker);
+ struct dualsense_output_report report;
+ struct dualsense_output_report_common *common;
+ unsigned long flags;
+
+ dualsense_init_output_report(ds, &report, ds->output_report_dmabuf);
+ common = report.common;
+
+ spin_lock_irqsave(&ds->base.lock, flags);
+
+ if (ds->update_rumble) {
+ /* Select classic rumble style haptics and enable it. */
+ common->valid_flag0 |= DS_OUTPUT_VALID_FLAG0_HAPTICS_SELECT;
+ common->valid_flag0 |= DS_OUTPUT_VALID_FLAG0_COMPATIBLE_VIBRATION;
+ common->motor_left = ds->motor_left;
+ common->motor_right = ds->motor_right;
+ ds->update_rumble = false;
+ }
+
+ spin_unlock_irqrestore(&ds->base.lock, flags);
+
+ dualsense_send_output_report(ds, &report);
+}
+
static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *report,
u8 *data, int size)
{
@@ -721,10 +899,30 @@ static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *r
return 0;
}
+static int dualsense_play_effect(struct input_dev *dev, void *data, struct ff_effect *effect)
+{
+ struct hid_device *hdev = input_get_drvdata(dev);
+ struct dualsense *ds = hid_get_drvdata(hdev);
+ unsigned long flags;
+
+ if (effect->type != FF_RUMBLE)
+ return 0;
+
+ spin_lock_irqsave(&ds->base.lock, flags);
+ ds->update_rumble = true;
+ ds->motor_left = effect->u.rumble.strong_magnitude / 256;
+ ds->motor_right = effect->u.rumble.weak_magnitude / 256;
+ spin_unlock_irqrestore(&ds->base.lock, flags);
+
+ schedule_work(&ds->output_worker);
+ return 0;
+}
+
static struct ps_device *dualsense_create(struct hid_device *hdev)
{
struct dualsense *ds;
struct ps_device *ps_dev;
+ uint8_t max_output_report_size;
int ret;
ds = devm_kzalloc(&hdev->dev, sizeof(*ds), GFP_KERNEL);
@@ -743,8 +941,14 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
ps_dev->battery_capacity = 100; /* initial value until parse_report. */
ps_dev->battery_status = POWER_SUPPLY_STATUS_UNKNOWN;
ps_dev->parse_report = dualsense_parse_report;
+ INIT_WORK(&ds->output_worker, dualsense_output_worker);
hid_set_drvdata(hdev, ds);
+ max_output_report_size = sizeof(struct dualsense_output_report_bt);
+ ds->output_report_dmabuf = devm_kzalloc(&hdev->dev, max_output_report_size, GFP_KERNEL);
+ if (!ds->output_report_dmabuf)
+ return ERR_PTR(-ENOMEM);
+
ret = dualsense_get_mac_address(ds);
if (ret) {
hid_err(hdev, "Failed to get MAC address from DualSense\n");
@@ -762,7 +966,7 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
goto err;
}
- ds->gamepad = ps_gamepad_create(hdev);
+ ds->gamepad = ps_gamepad_create(hdev, dualsense_play_effect);
if (IS_ERR(ds->gamepad)) {
ret = PTR_ERR(ds->gamepad);
goto err;