HID: sony: Report DS4 motion sensors through a separate device (227c011b) · Commits · e / devices / android_kernel_oneplus_sm8150

Documentation/input/event-codes.txt

+4 −1

Original line number	Diff line number	Diff line
		@@ -301,7 +301,10 @@ them as any other INPUT_PROP_BUTTONPAD device.
		INPUT_PROP_ACCELEROMETER
		-------------------------
		Directional axes on this device (absolute and/or relative x, y, z) represent
		accelerometer data. All other axes retain their meaning. A device must not mix
		accelerometer data. Some devices also report gyroscope data, which devices
		can report through the rotational axes (absolute and/or relative rx, ry, rz).

		All other axes retain their meaning. A device must not mix
		regular directional axes and accelerometer axes on the same event node.

		Guidelines:

drivers/hid/hid-sony.c

+105 −292

Original line number	Diff line number	Diff line
		@@ -344,265 +344,6 @@ static u8 navigation_rdesc[] = {
		0xC0 /* End Collection */
		};

		/*
		* The default descriptor doesn't provide mapping for the accelerometers
		* or orientation sensors. This fixed descriptor maps the accelerometers
		* to usage values 0x40, 0x41 and 0x42 and maps the orientation sensors
		* to usage values 0x43, 0x44 and 0x45.
		*/
		static u8 dualshock4_usb_rdesc[] = {
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x05, /* Usage (Gamepad), */
		0xA1, 0x01, /* Collection (Application), */
		0x85, 0x01, /* Report ID (1), */
		0x09, 0x30, /* Usage (X), */
		0x09, 0x31, /* Usage (Y), */
		0x09, 0x32, /* Usage (Z), */
		0x09, 0x35, /* Usage (Rz), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x26, 0xFF, 0x00, /* Logical Maximum (255), */
		0x75, 0x08, /* Report Size (8), */
		0x95, 0x04, /* Report Count (4), */
		0x81, 0x02, /* Input (Variable), */
		0x09, 0x39, /* Usage (Hat Switch), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x25, 0x07, /* Logical Maximum (7), */
		0x35, 0x00, /* Physical Minimum (0), */
		0x46, 0x3B, 0x01, /* Physical Maximum (315), */
		0x65, 0x14, /* Unit (Degrees), */
		0x75, 0x04, /* Report Size (4), */
		0x95, 0x01, /* Report Count (1), */
		0x81, 0x42, /* Input (Variable, Null State), */
		0x65, 0x00, /* Unit, */
		0x05, 0x09, /* Usage Page (Button), */
		0x19, 0x01, /* Usage Minimum (01h), */
		0x29, 0x0D, /* Usage Maximum (0Dh), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x25, 0x01, /* Logical Maximum (1), */
		0x75, 0x01, /* Report Size (1), */
		0x95, 0x0E, /* Report Count (14), */
		0x81, 0x02, /* Input (Variable), */
		0x06, 0x00, 0xFF, /* Usage Page (FF00h), */
		0x09, 0x20, /* Usage (20h), */
		0x75, 0x06, /* Report Size (6), */
		0x95, 0x01, /* Report Count (1), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x25, 0x3F, /* Logical Maximum (63), */
		0x81, 0x02, /* Input (Variable), */
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x33, /* Usage (Rx), */
		0x09, 0x34, /* Usage (Ry), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x26, 0xFF, 0x00, /* Logical Maximum (255), */
		0x75, 0x08, /* Report Size (8), */
		0x95, 0x02, /* Report Count (2), */
		0x81, 0x02, /* Input (Variable), */
		0x06, 0x00, 0xFF, /* Usage Page (FF00h), */
		0x09, 0x21, /* Usage (21h), */
		0x95, 0x03, /* Report Count (3), */
		0x81, 0x02, /* Input (Variable), */
		0x05, 0x01, /* Usage Page (Desktop), */
		0x19, 0x40, /* Usage Minimum (40h), */
		0x29, 0x42, /* Usage Maximum (42h), */
		0x16, 0x00, 0x80, /* Logical Minimum (-32768), */
		0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */
		0x75, 0x10, /* Report Size (16), */
		0x95, 0x03, /* Report Count (3), */
		0x81, 0x02, /* Input (Variable), */
		0x19, 0x43, /* Usage Minimum (43h), */
		0x29, 0x45, /* Usage Maximum (45h), */
		0x16, 0x00, 0x80, /* Logical Minimum (-32768), */
		0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */
		0x95, 0x03, /* Report Count (3), */
		0x81, 0x02, /* Input (Variable), */
		0x06, 0x00, 0xFF, /* Usage Page (FF00h), */
		0x09, 0x21, /* Usage (21h), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x26, 0xFF, 0x00, /* Logical Maximum (255), */
		0x75, 0x08, /* Report Size (8), */
		0x95, 0x27, /* Report Count (39), */
		0x81, 0x02, /* Input (Variable), */
		0x85, 0x05, /* Report ID (5), */
		0x09, 0x22, /* Usage (22h), */
		0x95, 0x1F, /* Report Count (31), */
		0x91, 0x02, /* Output (Variable), */
		0x85, 0x04, /* Report ID (4), */
		0x09, 0x23, /* Usage (23h), */
		0x95, 0x24, /* Report Count (36), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x02, /* Report ID (2), */
		0x09, 0x24, /* Usage (24h), */
		0x95, 0x24, /* Report Count (36), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x08, /* Report ID (8), */
		0x09, 0x25, /* Usage (25h), */
		0x95, 0x03, /* Report Count (3), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x10, /* Report ID (16), */
		0x09, 0x26, /* Usage (26h), */
		0x95, 0x04, /* Report Count (4), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x11, /* Report ID (17), */
		0x09, 0x27, /* Usage (27h), */
		0x95, 0x02, /* Report Count (2), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x12, /* Report ID (18), */
		0x06, 0x02, 0xFF, /* Usage Page (FF02h), */
		0x09, 0x21, /* Usage (21h), */
		0x95, 0x0F, /* Report Count (15), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x13, /* Report ID (19), */
		0x09, 0x22, /* Usage (22h), */
		0x95, 0x16, /* Report Count (22), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x14, /* Report ID (20), */
		0x06, 0x05, 0xFF, /* Usage Page (FF05h), */
		0x09, 0x20, /* Usage (20h), */
		0x95, 0x10, /* Report Count (16), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x15, /* Report ID (21), */
		0x09, 0x21, /* Usage (21h), */
		0x95, 0x2C, /* Report Count (44), */
		0xB1, 0x02, /* Feature (Variable), */
		0x06, 0x80, 0xFF, /* Usage Page (FF80h), */
		0x85, 0x80, /* Report ID (128), */
		0x09, 0x20, /* Usage (20h), */
		0x95, 0x06, /* Report Count (6), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x81, /* Report ID (129), */
		0x09, 0x21, /* Usage (21h), */
		0x95, 0x06, /* Report Count (6), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x82, /* Report ID (130), */
		0x09, 0x22, /* Usage (22h), */
		0x95, 0x05, /* Report Count (5), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x83, /* Report ID (131), */
		0x09, 0x23, /* Usage (23h), */
		0x95, 0x01, /* Report Count (1), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x84, /* Report ID (132), */
		0x09, 0x24, /* Usage (24h), */
		0x95, 0x04, /* Report Count (4), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x85, /* Report ID (133), */
		0x09, 0x25, /* Usage (25h), */
		0x95, 0x06, /* Report Count (6), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x86, /* Report ID (134), */
		0x09, 0x26, /* Usage (26h), */
		0x95, 0x06, /* Report Count (6), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x87, /* Report ID (135), */
		0x09, 0x27, /* Usage (27h), */
		0x95, 0x23, /* Report Count (35), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x88, /* Report ID (136), */
		0x09, 0x28, /* Usage (28h), */
		0x95, 0x22, /* Report Count (34), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x89, /* Report ID (137), */
		0x09, 0x29, /* Usage (29h), */
		0x95, 0x02, /* Report Count (2), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x90, /* Report ID (144), */
		0x09, 0x30, /* Usage (30h), */
		0x95, 0x05, /* Report Count (5), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x91, /* Report ID (145), */
		0x09, 0x31, /* Usage (31h), */
		0x95, 0x03, /* Report Count (3), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x92, /* Report ID (146), */
		0x09, 0x32, /* Usage (32h), */
		0x95, 0x03, /* Report Count (3), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0x93, /* Report ID (147), */
		0x09, 0x33, /* Usage (33h), */
		0x95, 0x0C, /* Report Count (12), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA0, /* Report ID (160), */
		0x09, 0x40, /* Usage (40h), */
		0x95, 0x06, /* Report Count (6), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA1, /* Report ID (161), */
		0x09, 0x41, /* Usage (41h), */
		0x95, 0x01, /* Report Count (1), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA2, /* Report ID (162), */
		0x09, 0x42, /* Usage (42h), */
		0x95, 0x01, /* Report Count (1), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA3, /* Report ID (163), */
		0x09, 0x43, /* Usage (43h), */
		0x95, 0x30, /* Report Count (48), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA4, /* Report ID (164), */
		0x09, 0x44, /* Usage (44h), */
		0x95, 0x0D, /* Report Count (13), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA5, /* Report ID (165), */
		0x09, 0x45, /* Usage (45h), */
		0x95, 0x15, /* Report Count (21), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA6, /* Report ID (166), */
		0x09, 0x46, /* Usage (46h), */
		0x95, 0x15, /* Report Count (21), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xF0, /* Report ID (240), */
		0x09, 0x47, /* Usage (47h), */
		0x95, 0x3F, /* Report Count (63), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xF1, /* Report ID (241), */
		0x09, 0x48, /* Usage (48h), */
		0x95, 0x3F, /* Report Count (63), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xF2, /* Report ID (242), */
		0x09, 0x49, /* Usage (49h), */
		0x95, 0x0F, /* Report Count (15), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA7, /* Report ID (167), */
		0x09, 0x4A, /* Usage (4Ah), */
		0x95, 0x01, /* Report Count (1), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA8, /* Report ID (168), */
		0x09, 0x4B, /* Usage (4Bh), */
		0x95, 0x01, /* Report Count (1), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xA9, /* Report ID (169), */
		0x09, 0x4C, /* Usage (4Ch), */
		0x95, 0x08, /* Report Count (8), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xAA, /* Report ID (170), */
		0x09, 0x4E, /* Usage (4Eh), */
		0x95, 0x01, /* Report Count (1), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xAB, /* Report ID (171), */
		0x09, 0x4F, /* Usage (4Fh), */
		0x95, 0x39, /* Report Count (57), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xAC, /* Report ID (172), */
		0x09, 0x50, /* Usage (50h), */
		0x95, 0x39, /* Report Count (57), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xAD, /* Report ID (173), */
		0x09, 0x51, /* Usage (51h), */
		0x95, 0x0B, /* Report Count (11), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xAE, /* Report ID (174), */
		0x09, 0x52, /* Usage (52h), */
		0x95, 0x01, /* Report Count (1), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xAF, /* Report ID (175), */
		0x09, 0x53, /* Usage (53h), */
		0x95, 0x02, /* Report Count (2), */
		0xB1, 0x02, /* Feature (Variable), */
		0x85, 0xB0, /* Report ID (176), */
		0x09, 0x54, /* Usage (54h), */
		0x95, 0x3F, /* Report Count (63), */
		0xB1, 0x02, /* Feature (Variable), */
		0xC0 /* End Collection */
		};

		/*
		* The default behavior of the Dualshock 4 is to send reports using report
		@@ -706,31 +447,10 @@ static u8 dualshock4_bt_rdesc[] = {
		0x75, 0x08, /* Report Size (8), */
		0x95, 0x02, /* Report Count (2), */
		0x81, 0x02, /* Input (Variable), */
		0x06, 0x00, 0xFF, /* Usage Page (FF00h), */
		0x09, 0x20, /* Usage (20h), */
		0x95, 0x03, /* Report Count (3), */
		0x81, 0x02, /* Input (Variable), */
		0x05, 0x01, /* Usage Page (Desktop), */
		0x19, 0x40, /* Usage Minimum (40h), */
		0x29, 0x42, /* Usage Maximum (42h), */
		0x16, 0x00, 0x80, /* Logical Minimum (-32768), */
		0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */
		0x75, 0x10, /* Report Size (16), */
		0x95, 0x03, /* Report Count (3), */
		0x81, 0x02, /* Input (Variable), */
		0x19, 0x43, /* Usage Minimum (43h), */
		0x29, 0x45, /* Usage Maximum (45h), */
		0x16, 0x00, 0x80, /* Logical Minimum (-32768), */
		0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */
		0x95, 0x03, /* Report Count (3), */
		0x81, 0x02, /* Input (Variable), */
		0x06, 0x00, 0xFF, /* Usage Page (FF00h), */
		0x09, 0x20, /* Usage (20h), */
		0x15, 0x00, /* Logical Minimum (0), */
		0x26, 0xFF, 0x00, /* Logical Maximum (255), */
		0x75, 0x08, /* Report Size (8), */
		0x95, 0x31, /* Report Count (51), */
		0x81, 0x02, /* Input (Variable), */
		0x06, 0x00, 0xFF, /* Usage Page (FF00h) */
		0x09, 0x21, /* Usage (0x21) */
		0x95, 0x42, /* Report Count (66) */
		0x81, 0x02, /* Input (Variable) */
		0x09, 0x21, /* Usage (21h), */
		0x75, 0x08, /* Report Size (8), */
		0x95, 0x4D, /* Report Count (77), */
		@@ -1060,9 +780,11 @@ struct motion_output_report_02 {
		* additional +2.
		*/
		#define DS4_INPUT_REPORT_BUTTON_OFFSET 5
		#define DS4_INPUT_REPORT_GYRO_X_OFFSET 13
		#define DS4_INPUT_REPORT_BATTERY_OFFSET 30
		#define DS4_INPUT_REPORT_TOUCHPAD_OFFSET 33

		#define DS4_SENSOR_SUFFIX " Motion Sensors"
		#define DS4_TOUCHPAD_SUFFIX " Touchpad"

		static DEFINE_SPINLOCK(sony_dev_list_lock);
		@@ -1074,6 +796,7 @@ struct sony_sc {
		struct list_head list_node;
		struct hid_device *hdev;
		struct input_dev *touchpad;
		struct input_dev *sensor_dev;
		struct led_classdev *leds[MAX_LEDS];
		unsigned long quirks;
		struct work_struct state_worker;
		@@ -1227,15 +950,11 @@ static u8 sony_report_fixup(struct hid_device hdev, u8 *rdesc,
		}

		/*
		* The default Dualshock 4 USB descriptor doesn't assign
		* the gyroscope values to corresponding axes so we need a
		* modified one.
		* The default Dualshock 4 BT descriptor doesn't describe report ID 17
		* which is most often used for input data. Add this mapping, so we
		* use the generic hid code for parsing the buttons and axes.
		*/
		if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {
		hid_info(hdev, "Using modified Dualshock 4 report descriptor with gyroscope axes\n");
		rdesc = dualshock4_usb_rdesc;
		*rsize = sizeof(dualshock4_usb_rdesc);
		} else if (sc->quirks & DUALSHOCK4_CONTROLLER_BT) {
		if (sc->quirks & DUALSHOCK4_CONTROLLER_BT) {
		hid_info(hdev, "Using modified Dualshock 4 Bluetooth report descriptor\n");
		rdesc = dualshock4_bt_rdesc;
		*rsize = sizeof(dualshock4_bt_rdesc);
		@@ -1295,6 +1014,9 @@ static void dualshock4_parse_report(struct sony_sc sc, u8 rd, int size)
		int n, m, offset, num_touch_data, max_touch_data;
		u8 cable_state, battery_capacity, battery_charging;

		/* Order of hw axes is gyro first, then accelerometer. */
		int axes[6] = {ABS_RX, ABS_RY, ABS_RZ, ABS_X, ABS_Y, ABS_Z};

		/* When using Bluetooth the header is 2 bytes longer, so skip these. */
		int data_offset = (sc->quirks & DUALSHOCK4_CONTROLLER_USB) ? 0 : 2;

		@@ -1302,6 +1024,14 @@ static void dualshock4_parse_report(struct sony_sc sc, u8 rd, int size)
		offset = data_offset + DS4_INPUT_REPORT_BUTTON_OFFSET;
		input_report_key(sc->touchpad, BTN_LEFT, rd[offset+2] & 0x2);

		offset = data_offset + DS4_INPUT_REPORT_GYRO_X_OFFSET;
		for (n = 0; n < 6; n++, offset += 2) {
		short value = get_unaligned_le16(&rd[offset]);

		input_report_abs(sc->sensor_dev, axes[n], value);
		}
		input_sync(sc->sensor_dev);

		/*
		* The lower 4 bits of byte 30 (or 32 for BT) contain the battery level
		* and the 5th bit contains the USB cable state.
		@@ -1580,6 +1310,76 @@ static void sony_unregister_touchpad(struct sony_sc *sc)
		sc->touchpad = NULL;
		}

		static int sony_register_sensors(struct sony_sc *sc)
		{
		size_t name_sz;
		char *name;
		int ret;

		sc->sensor_dev = input_allocate_device();
		if (!sc->sensor_dev)
		return -ENOMEM;

		input_set_drvdata(sc->sensor_dev, sc);
		sc->sensor_dev->dev.parent = &sc->hdev->dev;
		sc->sensor_dev->phys = sc->hdev->phys;
		sc->sensor_dev->uniq = sc->hdev->uniq;
		sc->sensor_dev->id.bustype = sc->hdev->bus;
		sc->sensor_dev->id.vendor = sc->hdev->vendor;
		sc->sensor_dev->id.product = sc->hdev->product;
		sc->sensor_dev->id.version = sc->hdev->version;

		/* 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 = kzalloc(name_sz, GFP_KERNEL);
		if (!name) {
		ret = -ENOMEM;
		goto err;
		}
		snprintf(name, name_sz, "%s" DS4_SENSOR_SUFFIX, sc->hdev->name);
		sc->sensor_dev->name = name;

		input_set_abs_params(sc->sensor_dev, ABS_X, -32768, 32767, 0, 0);
		input_set_abs_params(sc->sensor_dev, ABS_Y, -32768, 32767, 0, 0);
		input_set_abs_params(sc->sensor_dev, ABS_Z, -32768, 32767, 0, 0);

		input_set_abs_params(sc->sensor_dev, ABS_RX, -32768, 32767, 0, 0);
		input_set_abs_params(sc->sensor_dev, ABS_RY, -32768, 32767, 0, 0);
		input_set_abs_params(sc->sensor_dev, ABS_RZ, -32768, 32767, 0, 0);

		__set_bit(INPUT_PROP_ACCELEROMETER, sc->sensor_dev->propbit);

		ret = input_register_device(sc->sensor_dev);
		if (ret < 0)
		goto err;

		return 0;

		err:
		kfree(sc->sensor_dev->name);
		sc->sensor_dev->name = NULL;

		input_free_device(sc->sensor_dev);
		sc->sensor_dev = NULL;

		return ret;
		}

		static void sony_unregister_sensors(struct sony_sc *sc)
		{
		if (!sc->sensor_dev)
		return;

		kfree(sc->sensor_dev->name);
		sc->sensor_dev->name = NULL;

		input_unregister_device(sc->sensor_dev);
		sc->sensor_dev = NULL;
		}


		/*
		* Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
		* to "operational". Without this, the ps3 controller will not report any
		@@ -2585,6 +2385,13 @@ 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, dualshock4_send_output_report);
		} else if (sc->quirks & MOTION_CONTROLLER) {
		sony_init_output_report(sc, motion_send_output_report);
		@@ -2719,6 +2526,12 @@ static void sony_remove(struct hid_device *hdev)
		if (sc->touchpad)
		sony_unregister_touchpad(sc);

		if (sc->sensor_dev)
		sony_unregister_sensors(sc);

		if (sc->sensor_dev)
		sony_unregister_sensors(sc);

		sony_cancel_work_sync(sc);

		kfree(sc->output_report_dmabuf);

include/uapi/linux/input.h

+8 −3

Original line number	Diff line number	Diff line
		@@ -61,9 +61,14 @@ struct input_id {
		* Note that input core does not clamp reported values to the
		* [minimum, maximum] limits, such task is left to userspace.
		*
		* Resolution for main axes (ABS_X, ABS_Y, ABS_Z) is reported in
		* units per millimeter (units/mm), resolution for rotational axes
		* (ABS_RX, ABS_RY, ABS_RZ) is reported in units per radian.
		* The default resolution for main axes (ABS_X, ABS_Y, ABS_Z)
		* is reported in units per millimeter (units/mm), resolution
		* for rotational axes (ABS_RX, ABS_RY, ABS_RZ) is reported
		* in units per radian.
		* When INPUT_PROP_ACCELEROMETER is set the resolution changes.
		* The main axes (ABS_X, ABS_Y, ABS_Z) are then reported in
		* in units per g (units/g) and in units per degree per second
		* (units/deg/s) for rotational axes (ABS_RX, ABS_RY, ABS_RZ).
		*/
		struct input_absinfo {
		__s32 value;