@@ -18,6 +18,7 @@
#include "usbhid/usbhid.h"
#include "hid-ids.h"
#include <linux/ctype.h>
+#include <linux/string.h>
#include <asm/unaligned.h>
/**
@@ -1211,6 +1212,69 @@ static int uclogic_params_ugee_v2_init_frame_mouse(struct uclogic_params *p)
return rc;
}
+/**
+ * uclogic_params_ugee_v2_has_battery() - check whether a UGEE v2 device has
+ * battery or not.
+ * @hdev: The HID device of the tablet interface.
+ *
+ * Returns:
+ * True if the device has battery, false otherwise.
+ */
+static bool uclogic_params_ugee_v2_has_battery(struct hid_device *hdev)
+{
+ /* The XP-PEN Deco LW vendor, product and version are identical to the
+ * Deco L. The only difference reported by their firmware is the product
+ * name. Add a quirk to support battery reporting on the wireless
+ * version.
+ */
+ if (hdev->vendor == USB_VENDOR_ID_UGEE &&
+ hdev->product == USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L) {
+ struct usb_device *udev = hid_to_usb_dev(hdev);
+
+ if (strstarts(udev->product, "Deco LW"))
+ return true;
+ }
+
+ return false;
+}
+
+/**
+ * uclogic_params_ugee_v2_init_battery() - initialize UGEE v2 battery reporting.
+ * @hdev: The HID device of the tablet interface, cannot be NULL.
+ * @p: Parameters to fill in, cannot be NULL.
+ *
+ * Returns:
+ * Zero, if successful. A negative errno code on error.
+ */
+static int uclogic_params_ugee_v2_init_battery(struct hid_device *hdev,
+ struct uclogic_params *p)
+{
+ int rc = 0;
+
+ if (!hdev || !p)
+ return -EINVAL;
+
+ /* Some tablets contain invalid characters in hdev->uniq, throwing a
+ * "hwmon: '<name>' is not a valid name attribute, please fix" error.
+ * Use the device vendor and product IDs instead.
+ */
+ snprintf(hdev->uniq, sizeof(hdev->uniq), "%x-%x", hdev->vendor,
+ hdev->product);
+
+ rc = uclogic_params_frame_init_with_desc(&p->frame_list[1],
+ uclogic_rdesc_ugee_v2_battery_template_arr,
+ uclogic_rdesc_ugee_v2_battery_template_size,
+ UCLOGIC_RDESC_UGEE_V2_BATTERY_ID);
+ if (rc)
+ return rc;
+
+ p->frame_list[1].suffix = "Battery";
+ p->pen.subreport_list[1].value = 0xf2;
+ p->pen.subreport_list[1].id = UCLOGIC_RDESC_UGEE_V2_BATTERY_ID;
+
+ return rc;
+}
+
/**
* uclogic_params_ugee_v2_init() - initialize a UGEE graphics tablets by
* discovering their parameters.
@@ -1334,6 +1398,15 @@ static int uclogic_params_ugee_v2_init(struct uclogic_params *params,
if (rc)
goto cleanup;
+ /* Initialize the battery interface*/
+ if (uclogic_params_ugee_v2_has_battery(hdev)) {
+ rc = uclogic_params_ugee_v2_init_battery(hdev, &p);
+ if (rc) {
+ hid_err(hdev, "error initializing battery: %d\n", rc);
+ goto cleanup;
+ }
+ }
+
output:
/* Output parameters */
memcpy(params, &p, sizeof(*params));
@@ -1035,6 +1035,40 @@ const __u8 uclogic_rdesc_ugee_v2_frame_mouse_template_arr[] = {
const size_t uclogic_rdesc_ugee_v2_frame_mouse_template_size =
sizeof(uclogic_rdesc_ugee_v2_frame_mouse_template_arr);
+/* Fixed report descriptor template for UGEE v2 battery reports */
+const __u8 uclogic_rdesc_ugee_v2_battery_template_arr[] = {
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x09, 0x07, /* Usage (Keypad), */
+ 0xA1, 0x01, /* Collection (Application), */
+ 0x85, UCLOGIC_RDESC_UGEE_V2_BATTERY_ID,
+ /* Report ID, */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x05, 0x84, /* Usage Page (Power Device), */
+ 0x05, 0x85, /* Usage Page (Battery System), */
+ 0x09, 0x65, /* Usage Page (AbsoluteStateOfCharge), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x15, 0x00, /* Logical Minimum (0), */
+ 0x26, 0xff, 0x00, /* Logical Maximum (255), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x15, 0x00, /* Logical Minimum (0), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x09, 0x44, /* Usage Page (Charging), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x07, /* Report Count (7), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x07, /* Report Count (7), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0xC0 /* End Collection */
+};
+const size_t uclogic_rdesc_ugee_v2_battery_template_size =
+ sizeof(uclogic_rdesc_ugee_v2_battery_template_arr);
+
/* Fixed report descriptor for Ugee EX07 frame */
const __u8 uclogic_rdesc_ugee_ex07_frame_arr[] = {
0x05, 0x01, /* Usage Page (Desktop), */
@@ -161,6 +161,9 @@ extern const size_t uclogic_rdesc_v2_frame_dial_size;
/* Device ID byte offset in v2 frame dial reports */
#define UCLOGIC_RDESC_V2_FRAME_DIAL_DEV_ID_BYTE 0x4
+/* Report ID for tweaked UGEE v2 battery reports */
+#define UCLOGIC_RDESC_UGEE_V2_BATTERY_ID 0xba
+
/* Fixed report descriptor template for UGEE v2 pen reports */
extern const __u8 uclogic_rdesc_ugee_v2_pen_template_arr[];
extern const size_t uclogic_rdesc_ugee_v2_pen_template_size;
@@ -177,6 +180,10 @@ extern const size_t uclogic_rdesc_ugee_v2_frame_dial_template_size;
extern const __u8 uclogic_rdesc_ugee_v2_frame_mouse_template_arr[];
extern const size_t uclogic_rdesc_ugee_v2_frame_mouse_template_size;
+/* Fixed report descriptor template for UGEE v2 battery reports */
+extern const __u8 uclogic_rdesc_ugee_v2_battery_template_arr[];
+extern const size_t uclogic_rdesc_ugee_v2_battery_template_size;
+
/* Fixed report descriptor for Ugee EX07 frame */
extern const __u8 uclogic_rdesc_ugee_ex07_frame_arr[];
extern const size_t uclogic_rdesc_ugee_ex07_frame_size;