diff options
| author | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2015-03-06 01:36:54 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2015-03-16 22:18:20 +0300 |
| commit | 5fcad167315f224eaf6750b0fb85ee6c92f087cd (patch) | |
| tree | 143318838d56f88253e8c40e81f004d119d65850 /drivers/hid | |
| parent | 71fa641ebbfd2402bdb76d3c6ba7e4a2d1eb2dfc (diff) | |
| download | linux-5fcad167315f224eaf6750b0fb85ee6c92f087cd.tar.xz | |
HID: wacom: ask for a in-prox report when it was missed
If noone listens to the input device when a tool comes in proximity,
the tablet does not send the in-prox event when a client becomes available.
That means that no events will be sent until the tool is taken out of
proximity.
In this situation, ask for the report WACOM_REPORT_INTUOSREAD which will
read the corresponding feature and generate an in-prox event.
To make some generation of hardware working, we need to unset the
quirk NO_GET set by hid-core because the interfaces are seen as "boot
mouse".
We don't schedule this read in a worker while we are in an IO interrupt.
We know that usbhid will do it asynchronously. If this is triggered by
uhid, then this is obviously a client side bug :)
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/wacom_sys.c | 3 | ||||
| -rw-r--r-- | drivers/hid/wacom_wac.c | 18 |
2 files changed, 20 insertions, 1 deletions
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index ab7bf84c1ca7..353fe476be26 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -1408,6 +1408,9 @@ static int wacom_probe(struct hid_device *hdev, hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; + /* hid-core sets this quirk for the boot interface */ + hdev->quirks &= ~HID_QUIRK_NOGET; + wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL); if (!wacom) return -ENOMEM; diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 92626228d7b5..9406b128a44c 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -447,6 +447,19 @@ exit: return retval; } +static void wacom_intuos_schedule_prox_event(struct wacom_wac *wacom_wac) +{ + struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac); + struct hid_report *r; + struct hid_report_enum *re; + + re = &(wacom->hdev->report_enum[HID_FEATURE_REPORT]); + r = re->report_id_hash[WACOM_REPORT_INTUOSREAD]; + if (r) { + hid_hw_request(wacom->hdev, r, HID_REQ_GET_REPORT); + } +} + static int wacom_intuos_inout(struct wacom_wac *wacom) { struct wacom_features *features = &wacom->features; @@ -623,8 +636,11 @@ static int wacom_intuos_inout(struct wacom_wac *wacom) } /* don't report other events if we don't know the ID */ - if (!wacom->id[idx]) + if (!wacom->id[idx]) { + /* but reschedule a read of the current tool */ + wacom_intuos_schedule_prox_event(wacom); return 1; + } return 0; } |