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| author | Jason Gerecke <killertofu@gmail.com> | 2016-10-19 18:03:50 -0700 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2016-10-20 09:54:00 +0200 |
| commit | 345857bb493fbff15632a6bdf04713163ccd6fe6 (patch) | |
| tree | 7075631dd1dec30497cbcda00612e1f15d9b0eae /drivers/hid/wacom_wac.c | |
| parent | e779ef23104869d74f56fbd199a90e76699eb699 (diff) | |
| download | linux-345857bb493fbff15632a6bdf04713163ccd6fe6.tar.bz2 | |
HID: wacom: generic: Add support for sensor offsets
Many of Wacom's display tablets include an "outbound" area where pen
digitizing is possible but outside of the display area. To accommodate
such sensors in the HID_GENERIC codepath, we add support for the
necessary vendor-defined HID feature usages and adjust the min/max
values of the X and Y axes accordingly, similar to what is done in
the non-generic codepath.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/wacom_wac.c')
| -rw-r--r-- | drivers/hid/wacom_wac.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 5046071f2e9e..3bb6dd6e4eea 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -1468,6 +1468,9 @@ static int wacom_equivalent_usage(int usage) static void wacom_map_usage(struct input_dev *input, struct hid_usage *usage, struct hid_field *field, __u8 type, __u16 code, int fuzz) { + struct wacom *wacom = input_get_drvdata(input); + struct wacom_wac *wacom_wac = &wacom->wacom_wac; + struct wacom_features *features = &wacom_wac->features; int fmin = field->logical_minimum; int fmax = field->logical_maximum; unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid); @@ -1477,6 +1480,15 @@ static void wacom_map_usage(struct input_dev *input, struct hid_usage *usage, resolution_code = ABS_RZ; } + if (equivalent_usage == HID_GD_X) { + fmin += features->offset_left; + fmax -= features->offset_right; + } + if (equivalent_usage == HID_GD_Y) { + fmin += features->offset_top; + fmax -= features->offset_bottom; + } + usage->type = type; usage->code = code; @@ -1629,6 +1641,34 @@ static int wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field, */ wacom_wac->id[0] |= value; return 0; + case WACOM_HID_WD_OFFSETLEFT: + if (features->offset_left && value != features->offset_left) + hid_warn(hdev, "%s: overriding exising left offset " + "%d -> %d\n", __func__, value, + features->offset_left); + features->offset_left = value; + return 0; + case WACOM_HID_WD_OFFSETRIGHT: + if (features->offset_right && value != features->offset_right) + hid_warn(hdev, "%s: overriding exising right offset " + "%d -> %d\n", __func__, value, + features->offset_right); + features->offset_right = value; + return 0; + case WACOM_HID_WD_OFFSETTOP: + if (features->offset_top && value != features->offset_top) + hid_warn(hdev, "%s: overriding exising top offset " + "%d -> %d\n", __func__, value, + features->offset_top); + features->offset_top = value; + return 0; + case WACOM_HID_WD_OFFSETBOTTOM: + if (features->offset_bottom && value != features->offset_bottom) + hid_warn(hdev, "%s: overriding exising bottom offset " + "%d -> %d\n", __func__, value, + features->offset_bottom); + features->offset_bottom = value; + return 0; } /* send pen events only when touch is up or forced out |