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Date: Sun, 25 Dec 2022 22:11:39 -0500
From: Joshua Goins <josh@...strate.com>
To: linux-input@...r.kernel.org
Cc: jikos@...nel.org, benjamin.tissoires@...hat.com,
kurikaesu@...rs.noreply.github.com, linux-kernel@...r.kernel.org
Subject: [PATCH] HID: uclogic: Add support for XP-PEN Artist 22R Pro
From: Aren Villanueva <kurikaesu@...rs.noreply.github.com>
Adds support for the XP-PEN Artist 22R Pro in uclogic, including the stylus,
frame and pen pressure support.
I did not do the research for this hardware, or the original patch - that work
has been done by Aren Villanueva. For some reason they decided not to merge
it. My changes include remapping the stupid amount of tablet frame buttons,
cleaning up the code to match kernel style, and other small stuff.
The tablet is (almost) fully functional even when uclogic doesn't handle it.
Without initialization, the tablet has some sort of "basic driverless mode"
that allows the tablet frame buttons to have some default keys associated with
them (CTRL-S, CTRL-Z, that kind of stuff), but unfortunately the stylus pen
semi-works. While pressure sensitivity works, only one stylus button functions
correctly. Since the initialization process differs for Pro series tablets, the
new function uclogic_params_init_ugee_xppen_pro had to be introduced. I also
added USB HID IDs for this tablet too, but it's classified under the UGEE
vendor ID.
One of the more strange things I had to do is figure out a way to remap the
buttons since there are 20 of them in total, and of course there are more
buttons than there are BTN constants defined for us. When running without
uclogic, it starts at BTN_0, ends at BTN_8 and the tablet starts reporting
nonsensical keycodes so just leaving it alone isn't an option. I'm testing
this under a libinput system, which has a list of buttons it considers "tablet
pad buttons" which are notably BTN_0, BTN_1, so on and some
gamepad/joystick buttons. So I created a new array called
uclogic_extra_input_mapping for 20 working inputs.
Another weird feature of this tablet is the second dial, which the original
patchset introduced a new uclogic_frame param to handle since it seems it
throws both dials values into one byte. The left wheel is considered EV_WHEEL
and the other, EV_HWHEEL which seems fine to me. I also added the new param to
the debug messages too.
Link: https://github.com/DIGImend/digimend-kernel-drivers/pull/557
Signed-off-by: Joshua Goins <josh@...strate.com>
---
drivers/hid/hid-ids.h | 1 +
drivers/hid/hid-uclogic-core.c | 68 +++++++++++++-
drivers/hid/hid-uclogic-params.c | 147 +++++++++++++++++++++++++++++++
drivers/hid/hid-uclogic-params.h | 5 ++
drivers/hid/hid-uclogic-rdesc.c | 119 +++++++++++++++++++++++++
drivers/hid/hid-uclogic-rdesc.h | 15 ++++
6 files changed, 351 insertions(+), 4 deletions(-)
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 82713ef3aaa6..81d04054229a 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -1298,6 +1298,7 @@
#define USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L 0x0935
#define USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_S 0x0909
#define USB_DEVICE_ID_UGEE_XPPEN_TABLET_STAR06 0x0078
+#define USB_DEVICE_ID_UGEE_XPPEN_TABLET_22R_PRO 0x091b
#define USB_DEVICE_ID_UGEE_TABLET_G5 0x0074
#define USB_DEVICE_ID_UGEE_TABLET_EX07S 0x0071
#define USB_DEVICE_ID_UGEE_TABLET_RAINBOW_CV720 0x0055
diff --git a/drivers/hid/hid-uclogic-core.c b/drivers/hid/hid-uclogic-core.c
index 7fa6fe04f1b2..ebc93b354f7a 100644
--- a/drivers/hid/hid-uclogic-core.c
+++ b/drivers/hid/hid-uclogic-core.c
@@ -81,6 +81,30 @@ static __u8 *uclogic_report_fixup(struct hid_device *hdev, __u8 *rdesc,
return rdesc;
}
+/* Buttons considered valid tablet pad inputs. */
+const unsigned int uclogic_extra_input_mapping[] = {
+ BTN_0,
+ BTN_1,
+ BTN_2,
+ BTN_3,
+ BTN_4,
+ BTN_5,
+ BTN_6,
+ BTN_7,
+ BTN_8,
+ BTN_RIGHT,
+ BTN_MIDDLE,
+ BTN_SIDE,
+ BTN_EXTRA,
+ BTN_FORWARD,
+ BTN_BACK,
+ BTN_B,
+ BTN_A,
+ BTN_BASE,
+ BTN_BASE2,
+ BTN_X
+};
+
static int uclogic_input_mapping(struct hid_device *hdev,
struct hid_input *hi,
struct hid_field *field,
@@ -91,9 +115,27 @@ static int uclogic_input_mapping(struct hid_device *hdev,
struct uclogic_drvdata *drvdata = hid_get_drvdata(hdev);
struct uclogic_params *params = &drvdata->params;
- /* Discard invalid pen usages */
- if (params->pen.usage_invalid && (field->application == HID_DG_PEN))
- return -1;
+ if (field->application == HID_GD_KEYPAD) {
+ /*
+ * Remap input buttons to sensible ones that are not invalid.
+ * This only affects previous behavior for devices with more than ten or so buttons.
+ */
+ const int key = (usage->hid & HID_USAGE) - 1;
+
+ if (key > 0 && key < ARRAY_SIZE(uclogic_extra_input_mapping)) {
+ hid_map_usage(hi,
+ usage,
+ bit,
+ max,
+ EV_KEY,
+ uclogic_extra_input_mapping[key]);
+ return 1;
+ }
+ } else if (field->application == HID_DG_PEN) {
+ /* Discard invalid pen usages */
+ if (params->pen.usage_invalid)
+ return -1;
+ }
/* Let hid-core decide what to do */
return 0;
@@ -403,8 +445,24 @@ static int uclogic_raw_event_frame(
/* If need to, and can, transform the bitmap dial reports */
if (frame->bitmap_dial_byte > 0 && frame->bitmap_dial_byte < size) {
- if (data[frame->bitmap_dial_byte] == 2)
+ switch (data[frame->bitmap_dial_byte]) {
+ case 2:
data[frame->bitmap_dial_byte] = -1;
+ break;
+
+ /* Everything below here is for tablets that shove multiple dials into 1 byte */
+ case 4:
+ case 0x10:
+ data[frame->bitmap_dial_byte] = 0;
+ data[frame->bitmap_second_dial_destination_byte] = 1;
+ break;
+
+ case 8:
+ case 0x20:
+ data[frame->bitmap_dial_byte] = 0;
+ data[frame->bitmap_second_dial_destination_byte] = -1;
+ break;
+ }
}
return 0;
@@ -531,6 +589,8 @@ static const struct hid_device_id uclogic_devices[] = {
USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_S) },
{ HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
USB_DEVICE_ID_UGEE_XPPEN_TABLET_STAR06) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_UGEE,
+ USB_DEVICE_ID_UGEE_XPPEN_TABLET_22R_PRO) },
{ }
};
MODULE_DEVICE_TABLE(hid, uclogic_devices);
diff --git a/drivers/hid/hid-uclogic-params.c b/drivers/hid/hid-uclogic-params.c
index cd1233d7e253..86a1dfa2a4c0 100644
--- a/drivers/hid/hid-uclogic-params.c
+++ b/drivers/hid/hid-uclogic-params.c
@@ -103,6 +103,8 @@ static void uclogic_params_frame_hid_dbg(
frame->touch_flip_at);
hid_dbg(hdev, "\t\t.bitmap_dial_byte = %u\n",
frame->bitmap_dial_byte);
+ hid_dbg(hdev, "\t\t.bitmap_second_dial_destination_byte = %u\n",
+ frame->bitmap_second_dial_destination_byte);
}
/**
@@ -1418,6 +1420,126 @@ static int uclogic_params_ugee_v2_init(struct uclogic_params *params,
return rc;
}
+
+/*
+ * uclogic_params_init_ugee_xppen_pro() - Initializes a UGEE XP-Pen Pro tablet device.
+ *
+ * @hdev: The HID device of the tablet interface to initialize and get
+ * parameters from. Cannot be NULL.
+ * @params: Parameters to fill in (to be cleaned with
+ * uclogic_params_cleanup()). Not modified in case of error.
+ * Cannot be NULL.
+ *
+ * Returns:
+ * Zero, if successful. A negative errno code on error.
+ */
+static int uclogic_params_init_ugee_xppen_pro(struct hid_device *hdev,
+ struct uclogic_params *p,
+ const u8 probe_endpoint,
+ const u8 rdesc_init_packet[],
+ const size_t rdesc_init_size,
+ const u8 rdesc_tablet_arr[],
+ const size_t rdesc_tablet_size,
+ const u8 rdesc_frame_arr[],
+ const size_t rdesc_frame_size)
+{
+ const size_t str_desc_len = 12;
+ struct usb_device *udev = hid_to_usb_dev(hdev);
+ u8 *buf = kmemdup(rdesc_init_packet, rdesc_init_size, GFP_KERNEL);
+ s32 desc_params[UCLOGIC_RDESC_PH_ID_NUM];
+ int actual_len, rc;
+ u16 resolution;
+
+ if (hdev == NULL || p == NULL)
+ return -EINVAL;
+
+ rc = usb_interrupt_msg(
+ udev,
+ usb_sndintpipe(udev, probe_endpoint),
+ buf,
+ rdesc_init_size,
+ &actual_len,
+ USB_CTRL_SET_TIMEOUT);
+ kfree(buf);
+ if (rc == -EPIPE) {
+ hid_err(hdev, "broken pipe sending init packet\n");
+ return rc;
+ } else if (rc < 0) {
+ hid_err(hdev, "failed sending init packet: %d\n", rc);
+ return rc;
+ } else if (actual_len != rdesc_init_size) {
+ hid_err(hdev,
+ "failed to transfer complete init packet, only %d bytes sent\n",
+ actual_len);
+ return -1;
+ }
+
+ rc = uclogic_params_get_str_desc(&buf, hdev, 100, str_desc_len);
+ if (rc != str_desc_len) {
+ if (rc == -EPIPE) {
+ hid_err(hdev,
+ "string descriptor with pen parameters not found\n");
+ } else if (rc < 0) {
+ hid_err(hdev,
+ "failed retrieving pen parameters: %d\n", rc);
+ } else {
+ hid_err(hdev,
+ "string descriptor with pen parameters has invalid length (got %d, expected %lu)\n",
+ rc,
+ str_desc_len);
+ rc = -1;
+ }
+ kfree(buf);
+ return rc;
+ }
+
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_X_LM] = get_unaligned_le16(buf + 2);
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_Y_LM] = get_unaligned_le16(buf + 4);
+ /* buf + 6 is the number of pad buttons? Its 0x0008 */
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM] =
+ get_unaligned_le16(buf + 8);
+ resolution = get_unaligned_le16(buf + 10);
+ kfree(buf);
+ if (resolution == 0) {
+ hid_err(hdev, "resolution of 0 in descriptor string\n");
+ return -1;
+ }
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_X_PM] =
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_X_LM] * 1000 / resolution;
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_Y_PM] =
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_Y_LM] * 1000 / resolution;
+
+ hid_dbg(hdev,
+ "Received parameters: X: %d Y: %d Pressure: %d Resolution: %u\n",
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_X_LM],
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_Y_LM],
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM],
+ resolution);
+
+ p->pen.desc_ptr = uclogic_rdesc_template_apply(
+ rdesc_tablet_arr,
+ rdesc_tablet_size,
+ desc_params,
+ ARRAY_SIZE(desc_params));
+ p->pen.desc_size = rdesc_tablet_size;
+ p->pen.id = 0x02;
+
+ rc = uclogic_params_frame_init_with_desc(
+ &p->frame_list[0],
+ rdesc_frame_arr,
+ rdesc_frame_size,
+ UCLOGIC_RDESC_V1_FRAME_ID);
+ if (rc < 0) {
+ hid_err(hdev, "initializing frame params failed: %d\n", rc);
+ return rc;
+ }
+
+ p->pen.subreport_list[0].value = 0xf0;
+ p->pen.subreport_list[0].id = p->frame_list[0].id;
+
+ return 0;
+}
+
/**
* uclogic_params_init() - initialize a tablet interface and discover its
* parameters.
@@ -1728,6 +1850,31 @@ int uclogic_params_init(struct uclogic_params *params,
uclogic_params_init_invalid(&p);
}
+ break;
+ case VID_PID(USB_VENDOR_ID_UGEE,
+ USB_DEVICE_ID_UGEE_XPPEN_TABLET_22R_PRO):
+ /* Ignore non-pen interfaces */
+ if (bInterfaceNumber != 2) {
+ uclogic_params_init_invalid(&p);
+ break;
+ }
+
+ rc = uclogic_params_init_ugee_xppen_pro(
+ hdev, &p, UCLOGIC_RDESC_UGEE_XPPEN_PROBE_ENDPOINT_TYPE1,
+ uclogic_rdesc_xppen_init_packet_type1_arr,
+ uclogic_rdesc_xppen_init_packet_type1_size,
+ uclogic_rdesc_xppen_pro_stylus_type1_arr,
+ uclogic_rdesc_xppen_pro_stylus_type1_size,
+ uclogic_rdesc_xppen_artist_22r_pro_frame_arr,
+ uclogic_rdesc_xppen_artist_22r_pro_frame_size);
+ if (rc != 0) {
+ hid_err(hdev, "failed creating frame parameters: %d\n", rc);
+ goto cleanup;
+ }
+
+ p.frame_list[0].bitmap_dial_byte = 7;
+ p.frame_list[0].bitmap_second_dial_destination_byte = 8;
+
break;
}
diff --git a/drivers/hid/hid-uclogic-params.h b/drivers/hid/hid-uclogic-params.h
index a97477c02ff8..6621a75a4b1a 100644
--- a/drivers/hid/hid-uclogic-params.h
+++ b/drivers/hid/hid-uclogic-params.h
@@ -171,6 +171,11 @@ struct uclogic_params_frame {
* counterclockwise, as opposed to the normal 1 and -1.
*/
unsigned int bitmap_dial_byte;
+ /*
+ * Destination offset for the second bitmap dial byte, if the tablet
+ * supports a second dial at all.
+ */
+ unsigned int bitmap_second_dial_destination_byte;
};
/*
diff --git a/drivers/hid/hid-uclogic-rdesc.c b/drivers/hid/hid-uclogic-rdesc.c
index fb40775f5f5b..b55dbe5017c1 100644
--- a/drivers/hid/hid-uclogic-rdesc.c
+++ b/drivers/hid/hid-uclogic-rdesc.c
@@ -1185,6 +1185,125 @@ const __u8 uclogic_rdesc_xppen_deco01_frame_arr[] = {
const size_t uclogic_rdesc_xppen_deco01_frame_size =
sizeof(uclogic_rdesc_xppen_deco01_frame_arr);
+/* Fix report descriptor for XP-Pen init packet type 1 */
+const __u8 uclogic_rdesc_xppen_init_packet_type1_arr[] = {
+ 0x02, 0xb0, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+const size_t uclogic_rdesc_xppen_init_packet_type1_size =
+ sizeof(uclogic_rdesc_xppen_init_packet_type1_arr);
+
+/* Fixed report descriptor for XP-Pen Pro Stylus type 1 (10 bytes) */
+const __u8 uclogic_rdesc_xppen_pro_stylus_type1_arr[] = {
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x09, 0x02, /* Usage (Pen), */
+ 0xA1, 0x01, /* Collection (Application), */
+ 0x85, 0x02, /* Report ID (2), */
+ 0x09, 0x20, /* Usage (Stylus), */
+ 0xA0, /* Collection (Physical), */
+ 0x14, /* Logical Minimum (0), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x09, 0x42, /* Usage (Tip Switch), */
+ 0x09, 0x44, /* Usage (Barrel Switch), */
+ 0x09, 0x46, /* Usage (Tablet Pick), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x03, /* Report Count (3), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x09, 0x32, /* Usage (In Range), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x75, 0x10, /* Report Size (16), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0xA4, /* Push, */
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x55, 0xFD, /* Unit Exponent (-3), */
+ 0x65, 0x13, /* Unit (Inch), */
+ 0x34, /* Physical Minimum (0), */
+ 0x09, 0x30, /* Usage (X), */
+ 0x27, UCLOGIC_RDESC_PEN_PH(X_LM),
+ /* Logical Maximum (PLACEHOLDER), */
+ 0x47, UCLOGIC_RDESC_PEN_PH(X_PM),
+ /* Physical Maximum (PLACEHOLDER), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x09, 0x31, /* Usage (Y), */
+ 0x27, UCLOGIC_RDESC_PEN_PH(Y_LM),
+ /* Logical Maximum (PLACEHOLDER), */
+ 0x47, UCLOGIC_RDESC_PEN_PH(Y_PM),
+ /* Physical Maximum (PLACEHOLDER), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0xB4, /* Pop, */
+ 0x09, 0x30, /* Usage (Tip Pressure), */
+ 0x27, UCLOGIC_RDESC_PEN_PH(PRESSURE_LM),
+ /* Logical Maximum (PLACEHOLDER), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0xA4, /* Push, */
+ 0x54, /* Unit Exponent (0), */
+ 0x65, 0x14, /* Unit (Degrees), */
+ 0x35, 0xC3, /* Physical Minimum (-61), */
+ 0x45, 0x3C, /* Physical Maximum (60), */
+ 0x15, 0xC3, /* Logical Minimum (-61), */
+ 0x25, 0x3C, /* Logical Maximum (60), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x09, 0x3D, /* Usage (X Tilt), */
+ 0x09, 0x3E, /* Usage (Y Tilt), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0xB4, /* Pop, */
+ 0xC0, /* End Collection, */
+ 0xC0 /* End Collection */
+};
+
+const size_t uclogic_rdesc_xppen_pro_stylus_type1_size =
+ sizeof(uclogic_rdesc_xppen_pro_stylus_type1_arr);
+
+/* Fixed report descriptor for XP-Pen Arist 22R Pro frame */
+const __u8 uclogic_rdesc_xppen_artist_22r_pro_frame_arr[] = {
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x09, 0x07, /* Usage (Keypad), */
+ 0xA1, 0x01, /* Collection (Application), */
+ 0x85, UCLOGIC_RDESC_V1_FRAME_ID,
+ /* Report ID (Virtual report), */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x09, 0x39, /* Usage (Tablet Function Keys), */
+ 0xA0, /* Collection (Physical), */
+ 0x14, /* Logical Minimum (0), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x08, /* Report Count (8), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x05, 0x09, /* Usage Page (Button), */
+ 0x19, 0x01, /* Usage Minimum (01h), */
+ 0x29, 0x14, /* Usage Maximum (14h), */
+ 0x95, 0x14, /* Report Count (20), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x14, /* Report Count (20), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x09, 0x38, /* Usage (Wheel), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x15, 0xFF, /* Logical Minimum (-1), */
+ 0x25, 0x08, /* Logical Maximum (8), */
+ 0x81, 0x06, /* Input (Variable, Relative), */
+ 0x05, 0x0C, /* Usage Page (Consumer Devices), */
+ 0x0A, 0x38, 0x02, /* Usage (AC PAN), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x81, 0x06, /* Input (Variable, Relative), */
+ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0xC0, /* End Collection */
+ 0xC0, /* End Collection */
+};
+
+const size_t uclogic_rdesc_xppen_artist_22r_pro_frame_size =
+ sizeof(uclogic_rdesc_xppen_artist_22r_pro_frame_arr);
+
/**
* uclogic_rdesc_template_apply() - apply report descriptor parameters to a
* report descriptor template, creating a report descriptor. Copies the
diff --git a/drivers/hid/hid-uclogic-rdesc.h b/drivers/hid/hid-uclogic-rdesc.h
index a1f78c07293f..9e4055a5016e 100644
--- a/drivers/hid/hid-uclogic-rdesc.h
+++ b/drivers/hid/hid-uclogic-rdesc.h
@@ -205,4 +205,19 @@ extern const size_t uclogic_rdesc_ugee_g5_frame_size;
/* Least-significant bit of Ugee G5 frame rotary encoder state */
#define UCLOGIC_RDESC_UGEE_G5_FRAME_RE_LSB 38
+/* Probe endpoints for XP-Pen key activators */
+#define UCLOGIC_RDESC_UGEE_XPPEN_PROBE_ENDPOINT_TYPE1 0x03
+
+/* Fix report descriptor for XP-Pen init packet type 1 */
+extern const __u8 uclogic_rdesc_xppen_init_packet_type1_arr[];
+extern const size_t uclogic_rdesc_xppen_init_packet_type1_size;
+
+/* Fixed report descriptor for XP-Pen Pro Stylus type 1 (10 bytes) */
+extern const __u8 uclogic_rdesc_xppen_pro_stylus_type1_arr[];
+extern const size_t uclogic_rdesc_xppen_pro_stylus_type1_size;
+
+/* Fixed report descriptor for XP-Pen Arist 22R Pro frame */
+extern const __u8 uclogic_rdesc_xppen_artist_22r_pro_frame_arr[];
+extern const size_t uclogic_rdesc_xppen_artist_22r_pro_frame_size;
+
#endif /* _HID_UCLOGIC_RDESC_H */
--
2.38.2
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