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path: root/drivers/hid/hid-uclogic-params.c
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Diffstat (limited to 'drivers/hid/hid-uclogic-params.c')
-rw-r--r--drivers/hid/hid-uclogic-params.c230
1 files changed, 193 insertions, 37 deletions
diff --git a/drivers/hid/hid-uclogic-params.c b/drivers/hid/hid-uclogic-params.c
index c11fa239e6a2..34fa991e6267 100644
--- a/drivers/hid/hid-uclogic-params.c
+++ b/drivers/hid/hid-uclogic-params.c
@@ -1057,6 +1057,161 @@ cleanup:
}
/**
+ * uclogic_params_parse_ugee_v2_desc - parse the string descriptor containing
+ * pen and frame parameters returned by UGEE v2 devices.
+ *
+ * @str_desc: String descriptor, cannot be NULL.
+ * @str_desc_size: Size of the string descriptor.
+ * @desc_params: Output description params list.
+ * @desc_params_size: Size of the output description params list.
+ * @frame_type: Output frame type.
+ *
+ * Returns:
+ * Zero, if successful. A negative errno code on error.
+ */
+static int uclogic_params_parse_ugee_v2_desc(const __u8 *str_desc,
+ size_t str_desc_size,
+ s32 *desc_params,
+ size_t desc_params_size,
+ enum uclogic_params_frame_type *frame_type)
+{
+ s32 pen_x_lm, pen_y_lm;
+ s32 pen_x_pm, pen_y_pm;
+ s32 pen_pressure_lm;
+ s32 frame_num_buttons;
+ s32 resolution;
+
+ /* Minimum descriptor length required, maximum seen so far is 14 */
+ const int min_str_desc_size = 12;
+
+ if (!str_desc || str_desc_size < min_str_desc_size)
+ return -EINVAL;
+
+ if (desc_params_size != UCLOGIC_RDESC_PH_ID_NUM)
+ return -EINVAL;
+
+ pen_x_lm = get_unaligned_le16(str_desc + 2);
+ pen_y_lm = get_unaligned_le16(str_desc + 4);
+ frame_num_buttons = str_desc[6];
+ *frame_type = str_desc[7];
+ pen_pressure_lm = get_unaligned_le16(str_desc + 8);
+
+ resolution = get_unaligned_le16(str_desc + 10);
+ if (resolution == 0) {
+ pen_x_pm = 0;
+ pen_y_pm = 0;
+ } else {
+ pen_x_pm = pen_x_lm * 1000 / resolution;
+ pen_y_pm = pen_y_lm * 1000 / resolution;
+ }
+
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_X_LM] = pen_x_lm;
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_X_PM] = pen_x_pm;
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_Y_LM] = pen_y_lm;
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_Y_PM] = pen_y_pm;
+ desc_params[UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM] = pen_pressure_lm;
+ desc_params[UCLOGIC_RDESC_FRAME_PH_ID_UM] = frame_num_buttons;
+
+ return 0;
+}
+
+/**
+ * uclogic_params_ugee_v2_init_frame_buttons() - initialize a UGEE v2 frame with
+ * buttons.
+ * @p: Parameters to fill in, cannot be NULL.
+ * @desc_params: Device description params list.
+ * @desc_params_size: Size of the description params list.
+ *
+ * Returns:
+ * Zero, if successful. A negative errno code on error.
+ */
+static int uclogic_params_ugee_v2_init_frame_buttons(struct uclogic_params *p,
+ const s32 *desc_params,
+ size_t desc_params_size)
+{
+ __u8 *rdesc_frame = NULL;
+ int rc = 0;
+
+ if (!p || desc_params_size != UCLOGIC_RDESC_PH_ID_NUM)
+ return -EINVAL;
+
+ rdesc_frame = uclogic_rdesc_template_apply(
+ uclogic_rdesc_ugee_v2_frame_btn_template_arr,
+ uclogic_rdesc_ugee_v2_frame_btn_template_size,
+ desc_params, UCLOGIC_RDESC_PH_ID_NUM);
+ if (!rdesc_frame)
+ return -ENOMEM;
+
+ rc = uclogic_params_frame_init_with_desc(&p->frame_list[0],
+ rdesc_frame,
+ uclogic_rdesc_ugee_v2_frame_btn_template_size,
+ UCLOGIC_RDESC_V1_FRAME_ID);
+ kfree(rdesc_frame);
+ return rc;
+}
+
+/**
+ * uclogic_params_ugee_v2_init_frame_dial() - initialize a UGEE v2 frame with a
+ * bitmap dial.
+ * @p: Parameters to fill in, cannot be NULL.
+ * @desc_params: Device description params list.
+ * @desc_params_size: Size of the description params list.
+ *
+ * Returns:
+ * Zero, if successful. A negative errno code on error.
+ */
+static int uclogic_params_ugee_v2_init_frame_dial(struct uclogic_params *p,
+ const s32 *desc_params,
+ size_t desc_params_size)
+{
+ __u8 *rdesc_frame = NULL;
+ int rc = 0;
+
+ if (!p || desc_params_size != UCLOGIC_RDESC_PH_ID_NUM)
+ return -EINVAL;
+
+ rdesc_frame = uclogic_rdesc_template_apply(
+ uclogic_rdesc_ugee_v2_frame_dial_template_arr,
+ uclogic_rdesc_ugee_v2_frame_dial_template_size,
+ desc_params, UCLOGIC_RDESC_PH_ID_NUM);
+ if (!rdesc_frame)
+ return -ENOMEM;
+
+ rc = uclogic_params_frame_init_with_desc(&p->frame_list[0],
+ rdesc_frame,
+ uclogic_rdesc_ugee_v2_frame_dial_template_size,
+ UCLOGIC_RDESC_V1_FRAME_ID);
+ kfree(rdesc_frame);
+ if (rc)
+ return rc;
+
+ p->frame_list[0].bitmap_dial_byte = 7;
+ return 0;
+}
+
+/**
+ * uclogic_params_ugee_v2_init_frame_mouse() - initialize a UGEE v2 frame with a
+ * mouse.
+ * @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_frame_mouse(struct uclogic_params *p)
+{
+ int rc = 0;
+
+ if (!p)
+ return -EINVAL;
+
+ rc = uclogic_params_frame_init_with_desc(&p->frame_list[1],
+ uclogic_rdesc_ugee_v2_frame_mouse_template_arr,
+ uclogic_rdesc_ugee_v2_frame_mouse_template_size,
+ UCLOGIC_RDESC_V1_FRAME_ID);
+ return rc;
+}
+
+/**
* uclogic_params_ugee_v2_init() - initialize a UGEE graphics tablets by
* discovering their parameters.
*
@@ -1084,9 +1239,8 @@ static int uclogic_params_ugee_v2_init(struct uclogic_params *params,
const int str_desc_len = 12;
__u8 *str_desc = NULL;
__u8 *rdesc_pen = NULL;
- __u8 *rdesc_frame = NULL;
s32 desc_params[UCLOGIC_RDESC_PH_ID_NUM];
- s32 resolution;
+ enum uclogic_params_frame_type frame_type;
__u8 magic_arr[] = {
0x02, 0xb0, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
@@ -1100,6 +1254,15 @@ static int uclogic_params_ugee_v2_init(struct uclogic_params *params,
iface = to_usb_interface(hdev->dev.parent);
bInterfaceNumber = iface->cur_altsetting->desc.bInterfaceNumber;
+
+ if (bInterfaceNumber == 0) {
+ rc = uclogic_params_ugee_v2_init_frame_mouse(&p);
+ if (rc)
+ goto cleanup;
+
+ goto output;
+ }
+
if (bInterfaceNumber != 2) {
uclogic_params_init_invalid(&p);
goto output;
@@ -1128,25 +1291,13 @@ static int uclogic_params_ugee_v2_init(struct uclogic_params *params,
goto output;
}
- desc_params[UCLOGIC_RDESC_PEN_PH_ID_X_LM] =
- get_unaligned_le16(str_desc + 2);
- desc_params[UCLOGIC_RDESC_PEN_PH_ID_Y_LM] =
- get_unaligned_le16(str_desc + 4);
- desc_params[UCLOGIC_RDESC_FRAME_PH_ID_UM] = str_desc[6];
- desc_params[UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM] =
- get_unaligned_le16(str_desc + 8);
- resolution = get_unaligned_le16(str_desc + 10);
- if (resolution == 0) {
- desc_params[UCLOGIC_RDESC_PEN_PH_ID_X_PM] = 0;
- desc_params[UCLOGIC_RDESC_PEN_PH_ID_Y_PM] = 0;
- } else {
- 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;
- }
+ rc = uclogic_params_parse_ugee_v2_desc(str_desc, str_desc_len,
+ desc_params,
+ ARRAY_SIZE(desc_params),
+ &frame_type);
+ if (rc)
+ goto cleanup;
+
kfree(str_desc);
str_desc = NULL;
@@ -1167,24 +1318,21 @@ static int uclogic_params_ugee_v2_init(struct uclogic_params *params,
p.pen.subreport_list[0].id = UCLOGIC_RDESC_V1_FRAME_ID;
/* Initialize the frame interface */
- rdesc_frame = uclogic_rdesc_template_apply(
- uclogic_rdesc_ugee_v2_frame_btn_template_arr,
- uclogic_rdesc_ugee_v2_frame_btn_template_size,
- desc_params, ARRAY_SIZE(desc_params));
- if (!rdesc_frame) {
- rc = -ENOMEM;
- goto cleanup;
+ switch (frame_type) {
+ case UCLOGIC_PARAMS_FRAME_DIAL:
+ case UCLOGIC_PARAMS_FRAME_MOUSE:
+ rc = uclogic_params_ugee_v2_init_frame_dial(&p, desc_params,
+ ARRAY_SIZE(desc_params));
+ break;
+ case UCLOGIC_PARAMS_FRAME_BUTTONS:
+ default:
+ rc = uclogic_params_ugee_v2_init_frame_buttons(&p, desc_params,
+ ARRAY_SIZE(desc_params));
+ break;
}
- rc = uclogic_params_frame_init_with_desc(&p.frame_list[0],
- rdesc_frame,
- uclogic_rdesc_ugee_v2_frame_btn_template_size,
- UCLOGIC_RDESC_V1_FRAME_ID);
- kfree(rdesc_frame);
- if (rc) {
- uclogic_params_init_invalid(&p);
- goto output;
- }
+ if (rc)
+ goto cleanup;
output:
/* Output parameters */
@@ -1433,7 +1581,11 @@ int uclogic_params_init(struct uclogic_params *params,
}
break;
case VID_PID(USB_VENDOR_ID_UGEE,
+ USB_DEVICE_ID_UGEE_PARBLO_A610_PRO):
+ case VID_PID(USB_VENDOR_ID_UGEE,
USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L):
+ case VID_PID(USB_VENDOR_ID_UGEE,
+ USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_S):
rc = uclogic_params_ugee_v2_init(&p, hdev);
if (rc != 0)
goto cleanup;
@@ -1517,3 +1669,7 @@ cleanup:
uclogic_params_cleanup(&p);
return rc;
}
+
+#ifdef CONFIG_HID_KUNIT_TEST
+#include "hid-uclogic-params-test.c"
+#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.