[PATCH v3 4/7] HID: uclogic: Parse the UGEE v2 frame type
From: José Expósito
Date: Tue Jul 26 2022 - 12:39:49 EST
The string descriptor returned by UGEE v2 devices contains a byte
indicating the device frame type.
The values discovered so far are:
- 0: Frame with buttons, present in the XP-PEN Deco L.
- 1: Frame with buttons and dial, present in the PARBLO A610 PRO.
- 2: Frame with buttons and a mouse, shaped as a dial + touchpad.
Present in the XP-PEN Deco Pro S.
Parse the frame type and add KUnit tests.
Tested-by: Jouke Witteveen <j.witteveen@xxxxxxxxx>
Signed-off-by: José Expósito <jose.exposito89@xxxxxxxxx>
---
drivers/hid/hid-uclogic-params-test.c | 35 ++++++++++++++++++++++++++-
drivers/hid/hid-uclogic-params.c | 19 ++++++++++++---
drivers/hid/hid-uclogic-params.h | 10 ++++++++
3 files changed, 59 insertions(+), 5 deletions(-)
diff --git a/drivers/hid/hid-uclogic-params-test.c b/drivers/hid/hid-uclogic-params-test.c
index 9f043f2ab387..57ef5d3e4b74 100644
--- a/drivers/hid/hid-uclogic-params-test.c
+++ b/drivers/hid/hid-uclogic-params-test.c
@@ -7,6 +7,7 @@
*/
#include <kunit/test.h>
+#include "./hid-uclogic-params.h"
#include "./hid-uclogic-rdesc.h"
#define MAX_STR_DESC_SIZE 14
@@ -17,6 +18,7 @@ struct uclogic_parse_ugee_v2_desc_case {
const __u8 str_desc[MAX_STR_DESC_SIZE];
size_t str_desc_size;
const s32 desc_params[UCLOGIC_RDESC_PH_ID_NUM];
+ enum uclogic_params_frame_type frame_type;
};
static struct uclogic_parse_ugee_v2_desc_case uclogic_parse_ugee_v2_desc_cases[] = {
@@ -26,6 +28,7 @@ static struct uclogic_parse_ugee_v2_desc_case uclogic_parse_ugee_v2_desc_cases[]
.str_desc = {},
.str_desc_size = 0,
.desc_params = {},
+ .frame_type = UCLOGIC_PARAMS_FRAME_BUTTONS,
},
{
.name = "resolution_with_value_0",
@@ -48,6 +51,7 @@ static struct uclogic_parse_ugee_v2_desc_case uclogic_parse_ugee_v2_desc_cases[]
[UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM] = 0x1FFF,
[UCLOGIC_RDESC_FRAME_PH_ID_UM] = 0x08,
},
+ .frame_type = UCLOGIC_PARAMS_FRAME_BUTTONS,
},
/* XP-PEN Deco L str_desc: Frame with 8 buttons */
{
@@ -71,6 +75,7 @@ static struct uclogic_parse_ugee_v2_desc_case uclogic_parse_ugee_v2_desc_cases[]
[UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM] = 0x1FFF,
[UCLOGIC_RDESC_FRAME_PH_ID_UM] = 0x08,
},
+ .frame_type = UCLOGIC_PARAMS_FRAME_BUTTONS,
},
/* PARBLO A610 PRO str_desc: Frame with 9 buttons and dial */
{
@@ -94,6 +99,31 @@ static struct uclogic_parse_ugee_v2_desc_case uclogic_parse_ugee_v2_desc_cases[]
[UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM] = 0x1FFF,
[UCLOGIC_RDESC_FRAME_PH_ID_UM] = 0x09,
},
+ .frame_type = UCLOGIC_PARAMS_FRAME_DIAL,
+ },
+ /* XP-PEN Deco Pro S str_desc: Frame with 8 buttons and mouse */
+ {
+ .name = "frame_type_mouse",
+ .res = 0,
+ .str_desc = {
+ 0x0E, 0x03,
+ 0xC8, 0xB3,
+ 0x34, 0x65,
+ 0x08,
+ 0x02,
+ 0xFF, 0x1F,
+ 0xD8, 0x13,
+ },
+ .str_desc_size = 12,
+ .desc_params = {
+ [UCLOGIC_RDESC_PEN_PH_ID_X_LM] = 0xB3C8,
+ [UCLOGIC_RDESC_PEN_PH_ID_X_PM] = 0x2363,
+ [UCLOGIC_RDESC_PEN_PH_ID_Y_LM] = 0x6534,
+ [UCLOGIC_RDESC_PEN_PH_ID_Y_PM] = 0x13EC,
+ [UCLOGIC_RDESC_PEN_PH_ID_PRESSURE_LM] = 0x1FFF,
+ [UCLOGIC_RDESC_FRAME_PH_ID_UM] = 0x08,
+ },
+ .frame_type = UCLOGIC_PARAMS_FRAME_MOUSE,
},
};
@@ -110,12 +140,14 @@ static void uclogic_parse_ugee_v2_desc_test(struct kunit *test)
{
int res;
s32 desc_params[UCLOGIC_RDESC_PH_ID_NUM];
+ enum uclogic_params_frame_type frame_type;
const struct uclogic_parse_ugee_v2_desc_case *params = test->param_value;
res = uclogic_params_parse_ugee_v2_desc(params->str_desc,
params->str_desc_size,
desc_params,
- ARRAY_SIZE(desc_params));
+ ARRAY_SIZE(desc_params),
+ &frame_type);
KUNIT_ASSERT_EQ(test, res, params->res);
if (res)
@@ -139,6 +171,7 @@ static void uclogic_parse_ugee_v2_desc_test(struct kunit *test)
KUNIT_EXPECT_EQ(test,
params->desc_params[UCLOGIC_RDESC_FRAME_PH_ID_UM],
desc_params[UCLOGIC_RDESC_FRAME_PH_ID_UM]);
+ KUNIT_EXPECT_EQ(test, params->frame_type, frame_type);
}
static struct kunit_case hid_uclogic_params_test_cases[] = {
diff --git a/drivers/hid/hid-uclogic-params.c b/drivers/hid/hid-uclogic-params.c
index 7b9e1892aa91..b232125f6972 100644
--- a/drivers/hid/hid-uclogic-params.c
+++ b/drivers/hid/hid-uclogic-params.c
@@ -1060,6 +1060,7 @@ static int uclogic_probe_interface(struct hid_device *hdev, u8 *magic_arr,
* @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.
@@ -1067,7 +1068,8 @@ static int uclogic_probe_interface(struct hid_device *hdev, u8 *magic_arr,
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)
+ 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;
@@ -1087,6 +1089,7 @@ static int uclogic_params_parse_ugee_v2_desc(const __u8 *str_desc,
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);
@@ -1175,6 +1178,7 @@ static int uclogic_params_ugee_v2_init(struct uclogic_params *params,
__u8 *str_desc = NULL;
__u8 *rdesc_pen = NULL;
s32 desc_params[UCLOGIC_RDESC_PH_ID_NUM];
+ enum uclogic_params_frame_type frame_type;
__u8 magic_arr[] = {
0x02, 0xb0, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
@@ -1218,7 +1222,8 @@ static int uclogic_params_ugee_v2_init(struct uclogic_params *params,
rc = uclogic_params_parse_ugee_v2_desc(str_desc, str_desc_len,
desc_params,
- ARRAY_SIZE(desc_params));
+ ARRAY_SIZE(desc_params),
+ &frame_type);
if (rc)
goto cleanup;
@@ -1242,8 +1247,14 @@ 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 */
- rc = uclogic_params_ugee_v2_init_frame_buttons(&p, desc_params,
- ARRAY_SIZE(desc_params));
+ switch (frame_type) {
+ case UCLOGIC_PARAMS_FRAME_BUTTONS:
+ default:
+ rc = uclogic_params_ugee_v2_init_frame_buttons(&p, desc_params,
+ ARRAY_SIZE(desc_params));
+ break;
+ }
+
if (rc) {
uclogic_params_init_invalid(&p);
goto output;
diff --git a/drivers/hid/hid-uclogic-params.h b/drivers/hid/hid-uclogic-params.h
index 5bef8daaa607..a97477c02ff8 100644
--- a/drivers/hid/hid-uclogic-params.h
+++ b/drivers/hid/hid-uclogic-params.h
@@ -29,6 +29,16 @@ enum uclogic_params_pen_inrange {
UCLOGIC_PARAMS_PEN_INRANGE_NONE,
};
+/* Types of frames */
+enum uclogic_params_frame_type {
+ /* Frame with buttons */
+ UCLOGIC_PARAMS_FRAME_BUTTONS = 0,
+ /* Frame with buttons and a dial */
+ UCLOGIC_PARAMS_FRAME_DIAL,
+ /* Frame with buttons and a mouse (shaped as a dial + touchpad) */
+ UCLOGIC_PARAMS_FRAME_MOUSE,
+};
+
/*
* Pen report's subreport data.
*/
--
2.25.1