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Input: wacom - add fuzz parameters to features 

The signal-to-noise ratio varies between devices, but currently all
devices are treated the same way. Add fuzz parameters to the feature
struct, allowing for tailored treatment of devices.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Henrik Rydberg 2010-09-05 12:25:11 -07:00 committed by Dmitry Torokhov
parent 92944c1c94
commit fed87e655a
3 changed files with 15 additions and 4 deletions
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6
drivers/input/tablet/wacom_sys.c
View File

@ -333,8 +333,12 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
struct usb_host_interface *interface = intf->cur_altsetting;
struct hid_descriptor *hid_desc;
/* default device to penabled */
/* default features */
features->device_type = BTN_TOOL_PEN;
features->x_fuzz = 4;
features->y_fuzz = 4;
features->pressure_fuzz = 0;
features->distance_fuzz = 0;
/* only Tablet PCs need to retrieve the info */
if ((features->type != TABLETPC) && (features->type != TABLETPC2FG))

9
drivers/input/tablet/wacom_wac.c
View File

@ -951,9 +951,12 @@ void wacom_setup_input_capabilities(struct input_dev *input_dev,
__set_bit(BTN_TOUCH, input_dev->keybit);
input_set_abs_params(input_dev, ABS_X, 0, features->x_max, 4, 0);
input_set_abs_params(input_dev, ABS_Y, 0, features->y_max, 4, 0);
input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max, 0, 0);
input_set_abs_params(input_dev, ABS_X, 0, features->x_max,
features->x_fuzz, 0);
input_set_abs_params(input_dev, ABS_Y, 0, features->y_max,
features->y_fuzz, 0);
input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max,
features->pressure_fuzz, 0);
__set_bit(ABS_MISC, input_dev->absbit);

4
drivers/input/tablet/wacom_wac.h
View File

@ -73,6 +73,10 @@ struct wacom_features {
int y_phy;
unsigned char unit;
unsigned char unitExpo;
int x_fuzz;
int y_fuzz;
int pressure_fuzz;
int distance_fuzz;
};
struct wacom_shared {