uclogic: Support custom device suffix for frames

Support assigning custom device name suffixes to frame input devices
instead of just "Pad". This allows distinguishing multiple frame input
devices, e.g. for Huion HS610.

Author: spbnick

hid-uclogic-core.c

@@ -120,6 +120,8 @@ static int uclogic_input_configured(struct hid_device *hdev,
 	for (i = 0; i < ARRAY_SIZE(params->frame_list); i++) {
 		frame = &params->frame_list[i];
 		if (hi->report->id == frame->id) {
+			/* Assign custom suffix, if any */
+			suffix = frame->suffix;
 			/*
 			 * Disable EV_MSC reports for touch ring interfaces to
 			 * make the Wacom driver pickup touch ring extents
@@ -130,27 +132,29 @@ static int uclogic_input_configured(struct hid_device *hdev,
 		}
 	}
 
-	field = hi->report->field[0];
-
-	switch (field->application) {
-	case HID_GD_KEYBOARD:
-		suffix = "Keyboard";
-		break;
-	case HID_GD_MOUSE:
-		suffix = "Mouse";
-		break;
-	case HID_GD_KEYPAD:
-		suffix = "Pad";
-		break;
-	case HID_DG_PEN:
-		suffix = "Pen";
-		break;
-	case HID_CP_CONSUMER_CONTROL:
-		suffix = "Consumer Control";
-		break;
-	case HID_GD_SYSTEM_CONTROL:
-		suffix = "System Control";
-		break;
+	if (!suffix) {
+		field = hi->report->field[0];
+
+		switch (field->application) {
+		case HID_GD_KEYBOARD:
+			suffix = "Keyboard";
+			break;
+		case HID_GD_MOUSE:
+			suffix = "Mouse";
+			break;
+		case HID_GD_KEYPAD:
+			suffix = "Pad";
+			break;
+		case HID_DG_PEN:
+			suffix = "Pen";
+			break;
+		case HID_CP_CONSUMER_CONTROL:
+			suffix = "Consumer Control";
+			break;
+		case HID_GD_SYSTEM_CONTROL:
+			suffix = "System Control";
+			break;
+		}
 	}
 
 	if (suffix) {

hid-uclogic-params.h

@@ -114,6 +114,10 @@ struct uclogic_params_frame {
 	 * Report ID, if reports should be tweaked, zero if not.
 	 */
 	unsigned int id;
+	/*
+	 * The suffix to add to the input device name, if not NULL.
+	 */
+	const char *suffix;
 	/*
 	 * Number of the least-significant bit of the 2-bit state of a rotary
 	 * encoder, in the report. Cannot point to a 2-bit field crossing a
@@ -212,6 +216,7 @@ extern int uclogic_params_init(struct uclogic_params *params,
 		".frame_list[0].desc_ptr = %p\n"                \
 		".frame_list[0].desc_size = %u\n"               \
 		".frame_list[0].id = %u\n"                      \
+		".frame_list[0].suffix = %s\n"                  \
 		".frame_list[0].re_lsb = %u\n"                  \
 		".frame_list[0].dev_id_byte = %u\n"             \
 		".frame_list[0].touch_ring_byte = %u\n"         \
@@ -234,6 +239,7 @@ extern int uclogic_params_init(struct uclogic_params *params,
 		(_params)->frame_list[0].desc_ptr,                          \
 		(_params)->frame_list[0].desc_size,                         \
 		(_params)->frame_list[0].id,                                \
+		(_params)->frame_list[0].suffix,                            \
 		(_params)->frame_list[0].re_lsb,                            \
 		(_params)->frame_list[0].dev_id_byte,                       \
 		(_params)->frame_list[0].touch_ring_byte,                   \