Bamboo models do not support HID_DG_CONTACTMAX. Plus, Bamboo pen-only
has touch descriptor. This leads to some complications in the code.
This patch also fixes duplicated PAD interfeaces for Intuos Pen
models.
Signed-off-by: Ping Cheng <pingc@xxxxxxxxx>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---
v2: updated with Benjamin's comments
---
drivers/hid/wacom.h | 2 +-
drivers/hid/wacom_sys.c | 25 +++++++++++++++----------
drivers/hid/wacom_wac.c | 9 +++++++--
3 files changed, 23 insertions(+), 13 deletions(-)
diff --git a/drivers/hid/wacom.h b/drivers/hid/wacom.h
index 0cc5344..7db4328 100644
--- a/drivers/hid/wacom.h
+++ b/drivers/hid/wacom.h
@@ -140,7 +140,7 @@ extern const struct hid_device_id wacom_ids[];
void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len);
void wacom_setup_device_quirks(struct wacom_features *features);
-int wacom_setup_input_capabilities(struct input_dev *input_dev,
+int wacom_setup_pentouch_input_capabilities(struct input_dev *input_dev,
struct wacom_wac *wacom_wac);
int wacom_setup_pad_input_capabilities(struct input_dev *input_dev,
struct wacom_wac *wacom_wac);
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 8593047..68b6cd6 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -192,9 +192,15 @@ static void wacom_usage_mapping(struct hid_device *hdev,
if (!pen && !finger)
return;
- if (finger && !features->touch_max)
- /* touch device at least supports one touch point */
- features->touch_max = 1;
+ /*
+ * Bamboo models do not support HID_DG_CONTACTMAX.
+ * And, Bamboo Pen only descriptor contains touch.
+ */
+ if (features->type != BAMBOO_PT) {
+ /* ISDv4 touch devices at least supports one touch point */
+ if (finger && !features->touch_max)
+ features->touch_max = 1;
+ }
switch (usage->hid) {
case HID_GD_X:
@@ -1151,13 +1157,12 @@ static int wacom_register_inputs(struct wacom *wacom)
if (!input_dev || !pad_input_dev)
return -EINVAL;
- error = wacom_setup_input_capabilities(input_dev, wacom_wac);
- if (error)
- return error;
-
- error = input_register_device(input_dev);
- if (error)
- return error;
+ error = wacom_setup_pentouch_input_capabilities(input_dev, wacom_wac);
+ if (!error) {
+ error = input_register_device(input_dev);
+ if (error)
+ return error;
+ }
error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
if (error) {
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 792569c..6bed92c 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2029,7 +2029,7 @@ static void wacom_abs_set_axis(struct input_dev *input_dev,
}
}
-int wacom_setup_input_capabilities(struct input_dev *input_dev,
+int wacom_setup_pentouch_input_capabilities(struct input_dev *input_dev,
struct wacom_wac *wacom_wac)
{
struct wacom_features *features = &wacom_wac->features;
@@ -2243,6 +2243,9 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
__clear_bit(ABS_X, input_dev->absbit);
__clear_bit(ABS_Y, input_dev->absbit);
__clear_bit(BTN_TOUCH, input_dev->keybit);
+
+ /* PAD is setup by wacom_setup_pad_input_capabilities later */
+ return 1;
}
} else if (features->device_type == BTN_TOOL_PEN) {
__set_bit(INPUT_PROP_POINTER, input_dev->propbit);
@@ -2441,7 +2444,9 @@ int wacom_setup_pad_input_capabilities(struct input_dev *input_dev,
case INTUOSHT:
case BAMBOO_PT:
/* pad device is on the touch interface */
- if (features->device_type != BTN_TOOL_FINGER)
+ if ((features->device_type != BTN_TOOL_FINGER) ||
+ /* Bamboo Pen only tablet does not have pad */
+ ((features->type == BAMBOO_PT) && !features->touch_max))
return -ENODEV;
__clear_bit(ABS_MISC, input_dev->absbit);
--
1.9.1
--
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