diff options
| author | Jason Gerecke <killertofu@gmail.com> | 2016-10-20 04:03:50 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2016-10-20 10:54:00 +0300 |
| commit | 345857bb493fbff15632a6bdf04713163ccd6fe6 (patch) | |
| tree | 7075631dd1dec30497cbcda00612e1f15d9b0eae /drivers/hid/wacom_sys.c | |
| parent | e779ef23104869d74f56fbd199a90e76699eb699 (diff) | |
| download | linux-345857bb493fbff15632a6bdf04713163ccd6fe6.tar.xz | |
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_sys.c')
| -rw-r--r-- | drivers/hid/wacom_sys.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index b2e2471bbef6..b9779bcbd140 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -122,6 +122,7 @@ static void wacom_feature_mapping(struct hid_device *hdev, struct hid_data *hid_data = &wacom->wacom_wac.hid_data; u8 *data; int ret; + int n; switch (usage->hid) { case HID_DG_CONTACTMAX: @@ -180,6 +181,27 @@ static void wacom_feature_mapping(struct hid_device *hdev, wacom->wacom_wac.mode_value = 0; } break; + case WACOM_HID_WD_OFFSETLEFT: + case WACOM_HID_WD_OFFSETTOP: + case WACOM_HID_WD_OFFSETRIGHT: + case WACOM_HID_WD_OFFSETBOTTOM: + /* read manually */ + n = hid_report_len(field->report); + data = hid_alloc_report_buf(field->report, GFP_KERNEL); + if (!data) + break; + data[0] = field->report->id; + ret = wacom_get_report(hdev, HID_FEATURE_REPORT, + data, n, WAC_CMD_RETRIES); + if (ret == n) { + ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, + data, n, 0); + } else { + hid_warn(hdev, "%s: could not retrieve sensor offsets\n", + __func__); + } + kfree(data); + break; } } @@ -718,11 +740,6 @@ static int wacom_add_shared_data(struct hid_device *hdev) return retval; } - if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) - wacom_wac->shared->touch = hdev; - else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN) - wacom_wac->shared->pen = hdev; - out: mutex_unlock(&wacom_udev_list_lock); return retval; @@ -2019,6 +2036,10 @@ static int wacom_parse_and_register(struct wacom *wacom, bool wireless) if (error) goto fail; + error = wacom_add_shared_data(hdev); + if (error) + goto fail; + /* * Bamboo Pad has a generic hid handling for the Pen, and we switch it * into debug mode for the touch part. @@ -2059,9 +2080,10 @@ static int wacom_parse_and_register(struct wacom *wacom, bool wireless) wacom_update_name(wacom, wireless ? " (WL)" : ""); - error = wacom_add_shared_data(hdev); - if (error) - goto fail; + if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) + wacom_wac->shared->touch = hdev; + else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN) + wacom_wac->shared->pen = hdev; if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) && (features->quirks & WACOM_QUIRK_BATTERY)) { |