diff options
| author | Nikolai Kondrashov <spbnick@gmail.com> | 2019-02-10 13:13:55 +0300 |
|---|---|---|
| committer | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2019-02-21 14:00:53 +0300 |
| commit | 59f2e0fca8ca84f02a718c0f3cd72990d03545be (patch) | |
| tree | a1880fa7f704051aa357d0900ff0438791d03c62 /drivers/hid/hid-uclogic-core.c | |
| parent | 01309e29eb95c16bd48984f2589fad0cbf5e27d1 (diff) | |
| download | linux-59f2e0fca8ca84f02a718c0f3cd72990d03545be.tar.xz | |
HID: uclogic: Support fragmented high-res reports
Support parsing fragmented high-resolution reports in hid-uclogic to
support v2 reporting protocol.
Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Diffstat (limited to 'drivers/hid/hid-uclogic-core.c')
| -rw-r--r-- | drivers/hid/hid-uclogic-core.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/hid/hid-uclogic-core.c b/drivers/hid/hid-uclogic-core.c index 206642802ca5..81693183d647 100644 --- a/drivers/hid/hid-uclogic-core.c +++ b/drivers/hid/hid-uclogic-core.c @@ -265,6 +265,31 @@ static int uclogic_raw_event(struct hid_device *hdev, /* Invert the in-range bit */ data[1] ^= 0x40; } + /* + * If report contains fragmented high-resolution pen + * coordinates + */ + if (size >= 10 && params->pen.fragmented_hires) { + u8 pressure_low_byte; + u8 pressure_high_byte; + + /* Lift pressure bytes */ + pressure_low_byte = data[6]; + pressure_high_byte = data[7]; + /* + * Move Y coord to make space for high-order X + * coord byte + */ + data[6] = data[5]; + data[5] = data[4]; + /* Move high-order X coord byte */ + data[4] = data[8]; + /* Move high-order Y coord byte */ + data[7] = data[9]; + /* Place pressure bytes */ + data[8] = pressure_low_byte; + data[9] = pressure_high_byte; + } /* If we need to emulate in-range detection */ if (params->pen.inrange == UCLOGIC_PARAMS_PEN_INRANGE_NONE) { /* Set in-range bit */ |