HID: sony: Expose DS3 motion sensors through separate device

This patch adds a separate evdev node for the DS3 its motion
sensors. We only expose the accelerometers as the gyroscope
is extremely difficult to manage and behavior varies a lot
between hardware revisions.

Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index fa2ea08..d8a1308 100644 (file)
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -547,12 +547,15 @@ struct motion_output_report_02 {
 #define DS4_INPUT_REPORT_BATTERY_OFFSET  30
 #define DS4_INPUT_REPORT_TOUCHPAD_OFFSET 33
 
-#define DS4_SENSOR_SUFFIX " Motion Sensors"
+#define SENSOR_SUFFIX " Motion Sensors"
 #define DS4_TOUCHPAD_SUFFIX " Touchpad"
 
 #define DS4_GYRO_RES_PER_DEG_S 1024
 #define DS4_ACC_RES_PER_G      8192
 
+#define SIXAXIS_INPUT_REPORT_ACC_X_OFFSET 41
+#define SIXAXIS_ACC_RES_PER_G 113
+
 static DEFINE_SPINLOCK(sony_dev_list_lock);
 static LIST_HEAD(sony_device_list);
 static DEFINE_IDA(sony_device_id_allocator);
@@ -841,6 +844,23 @@ static void sixaxis_parse_report(struct sony_sc *sc, u8 *rd, int size)
        sc->battery_capacity = battery_capacity;
        sc->battery_charging = battery_charging;
        spin_unlock_irqrestore(&sc->lock, flags);
+
+       if (sc->quirks & SIXAXIS_CONTROLLER) {
+               int val;
+
+               offset = SIXAXIS_INPUT_REPORT_ACC_X_OFFSET;
+               val = ((rd[offset+1] << 8) | rd[offset]) - 511;
+               input_report_abs(sc->sensor_dev, ABS_X, val);
+
+               /* Y and Z are swapped and inversed */
+               val = 511 - ((rd[offset+5] << 8) | rd[offset+4]);
+               input_report_abs(sc->sensor_dev, ABS_Y, val);
+
+               val = 511 - ((rd[offset+3] << 8) | rd[offset+2]);
+               input_report_abs(sc->sensor_dev, ABS_Z, val);
+
+               input_sync(sc->sensor_dev);
+       }
 }
 
 static void dualshock4_parse_report(struct sony_sc *sc, u8 *rd, int size)
@@ -1285,33 +1305,49 @@ static int sony_register_sensors(struct sony_sc *sc)
        /* Append a suffix to the controller name as there are various
         * DS4 compatible non-Sony devices with different names.
         */
-       name_sz = strlen(sc->hdev->name) + sizeof(DS4_SENSOR_SUFFIX);
+       name_sz = strlen(sc->hdev->name) + sizeof(SENSOR_SUFFIX);
        name = kzalloc(name_sz, GFP_KERNEL);
        if (!name) {
                ret = -ENOMEM;
                goto err;
        }
-       snprintf(name, name_sz, "%s" DS4_SENSOR_SUFFIX, sc->hdev->name);
+       snprintf(name, name_sz, "%s" SENSOR_SUFFIX, sc->hdev->name);
        sc->sensor_dev->name = name;
 
-       range = DS4_ACC_RES_PER_G*4;
-       input_set_abs_params(sc->sensor_dev, ABS_X, -range, range, 16, 0);
-       input_set_abs_params(sc->sensor_dev, ABS_Y, -range, range, 16, 0);
-       input_set_abs_params(sc->sensor_dev, ABS_Z, -range, range, 16, 0);
-       input_abs_set_res(sc->sensor_dev, ABS_X, DS4_ACC_RES_PER_G);
-       input_abs_set_res(sc->sensor_dev, ABS_Y, DS4_ACC_RES_PER_G);
-       input_abs_set_res(sc->sensor_dev, ABS_Z, DS4_ACC_RES_PER_G);
-
-       range = DS4_GYRO_RES_PER_DEG_S*2048;
-       input_set_abs_params(sc->sensor_dev, ABS_RX, -range, range, 16, 0);
-       input_set_abs_params(sc->sensor_dev, ABS_RY, -range, range, 16, 0);
-       input_set_abs_params(sc->sensor_dev, ABS_RZ, -range, range, 16, 0);
-       input_abs_set_res(sc->sensor_dev, ABS_RX, DS4_GYRO_RES_PER_DEG_S);
-       input_abs_set_res(sc->sensor_dev, ABS_RY, DS4_GYRO_RES_PER_DEG_S);
-       input_abs_set_res(sc->sensor_dev, ABS_RZ, DS4_GYRO_RES_PER_DEG_S);
-
-       __set_bit(EV_MSC, sc->sensor_dev->evbit);
-       __set_bit(MSC_TIMESTAMP, sc->sensor_dev->mscbit);
+       if (sc->quirks & SIXAXIS_CONTROLLER) {
+               /* For the DS3 we only support the accelerometer, which works
+                * quite well even without calibration. The device also has
+                * a 1-axis gyro, but it is very difficult to manage from within
+                * the driver even to get data, the sensor is inaccurate and
+                * the behavior is very different between hardware revisions.
+                */
+               input_set_abs_params(sc->sensor_dev, ABS_X, -512, 511, 4, 0);
+               input_set_abs_params(sc->sensor_dev, ABS_Y, -512, 511, 4, 0);
+               input_set_abs_params(sc->sensor_dev, ABS_Z, -512, 511, 4, 0);
+               input_abs_set_res(sc->sensor_dev, ABS_X, SIXAXIS_ACC_RES_PER_G);
+               input_abs_set_res(sc->sensor_dev, ABS_Y, SIXAXIS_ACC_RES_PER_G);
+               input_abs_set_res(sc->sensor_dev, ABS_Z, SIXAXIS_ACC_RES_PER_G);
+       } else if (sc->quirks & DUALSHOCK4_CONTROLLER) {
+               range = DS4_ACC_RES_PER_G*4;
+               input_set_abs_params(sc->sensor_dev, ABS_X, -range, range, 16, 0);
+               input_set_abs_params(sc->sensor_dev, ABS_Y, -range, range, 16, 0);
+               input_set_abs_params(sc->sensor_dev, ABS_Z, -range, range, 16, 0);
+               input_abs_set_res(sc->sensor_dev, ABS_X, DS4_ACC_RES_PER_G);
+               input_abs_set_res(sc->sensor_dev, ABS_Y, DS4_ACC_RES_PER_G);
+               input_abs_set_res(sc->sensor_dev, ABS_Z, DS4_ACC_RES_PER_G);
+
+               range = DS4_GYRO_RES_PER_DEG_S*2048;
+               input_set_abs_params(sc->sensor_dev, ABS_RX, -range, range, 16, 0);
+               input_set_abs_params(sc->sensor_dev, ABS_RY, -range, range, 16, 0);
+               input_set_abs_params(sc->sensor_dev, ABS_RZ, -range, range, 16, 0);
+               input_abs_set_res(sc->sensor_dev, ABS_RX, DS4_GYRO_RES_PER_DEG_S);
+               input_abs_set_res(sc->sensor_dev, ABS_RY, DS4_GYRO_RES_PER_DEG_S);
+               input_abs_set_res(sc->sensor_dev, ABS_RZ, DS4_GYRO_RES_PER_DEG_S);
+
+               __set_bit(EV_MSC, sc->sensor_dev->evbit);
+               __set_bit(MSC_TIMESTAMP, sc->sensor_dev->mscbit);
+       }
+
        __set_bit(INPUT_PROP_ACCELEROMETER, sc->sensor_dev->propbit);
 
        ret = input_register_device(sc->sensor_dev);
@@ -2447,8 +2483,7 @@ static int sony_input_configured(struct hid_device *hdev,
                goto err_stop;
        }
 
-       if ((sc->quirks & SIXAXIS_CONTROLLER_USB) ||
-                       (sc->quirks & NAVIGATION_CONTROLLER_USB)) {
+       if (sc->quirks & NAVIGATION_CONTROLLER_USB) {
                /*
                 * The Sony Sixaxis does not handle HID Output Reports on the
                 * Interrupt EP like it could, so we need to force HID Output
@@ -2476,8 +2511,46 @@ static int sony_input_configured(struct hid_device *hdev,
                }
 
                sony_init_output_report(sc, sixaxis_send_output_report);
-       } else if ((sc->quirks & SIXAXIS_CONTROLLER_BT) ||
-                       (sc->quirks & NAVIGATION_CONTROLLER_BT)) {
+       } else if (sc->quirks & NAVIGATION_CONTROLLER_BT) {
+               /*
+                * The Navigation controller wants output reports sent on the ctrl
+                * endpoint when connected via Bluetooth.
+                */
+               hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;
+
+               ret = sixaxis_set_operational_bt(hdev);
+               if (ret < 0) {
+                       hid_err(hdev, "Failed to set controller into operational mode\n");
+                       goto err_stop;
+               }
+
+               sony_init_output_report(sc, sixaxis_send_output_report);
+       } else if (sc->quirks & SIXAXIS_CONTROLLER_USB) {
+               /*
+                * The Sony Sixaxis does not handle HID Output Reports on the
+                * Interrupt EP and the device only becomes active when the
+                * PS button is pressed. See comment for Navigation controller
+                * above for more details.
+                */
+               hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;
+               hdev->quirks |= HID_QUIRK_SKIP_OUTPUT_REPORT_ID;
+               sc->defer_initialization = 1;
+
+               ret = sixaxis_set_operational_usb(hdev);
+               if (ret < 0) {
+                       hid_err(hdev, "Failed to set controller into operational mode\n");
+                       goto err_stop;
+               }
+
+               ret = sony_register_sensors(sc);
+               if (ret) {
+                       hid_err(sc->hdev,
+                       "Unable to initialize motion sensors: %d\n", ret);
+                       goto err_stop;
+               }
+
+               sony_init_output_report(sc, sixaxis_send_output_report);
+       } else if (sc->quirks & SIXAXIS_CONTROLLER_BT) {
                /*
                 * The Sixaxis wants output reports sent on the ctrl endpoint
                 * when connected via Bluetooth.
@@ -2490,6 +2563,13 @@ static int sony_input_configured(struct hid_device *hdev,
                        goto err_stop;
                }
 
+               ret = sony_register_sensors(sc);
+               if (ret) {
+                       hid_err(sc->hdev,
+                       "Unable to initialize motion sensors: %d\n", ret);
+                       goto err_stop;
+               }
+
                sony_init_output_report(sc, sixaxis_send_output_report);
        } else if (sc->quirks & DUALSHOCK4_CONTROLLER) {
                ret = dualshock4_get_calibration_data(sc);