diff options
| author | Allen Ballway <ballway@chromium.org> | 2023-01-10 23:25:50 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2023-01-18 12:08:51 +0300 |
| commit | a2f416bf062a38bb76cccd526d2d286b8e4db4d9 (patch) | |
| tree | 7420dede600d89baa8f1525fee6cca4c0326c284 /drivers/hid/hid-quirks.c | |
| parent | d264dd3bbbd16b56239e889023fbe49413a58eaf (diff) | |
| download | linux-a2f416bf062a38bb76cccd526d2d286b8e4db4d9.tar.xz | |
HID: multitouch: Add quirks for flipped axes
Certain touchscreen devices, such as the ELAN9034, are oriented
incorrectly and report touches on opposite points on the X and Y axes.
For example, a 100x200 screen touched at (10,20) would report (90, 180)
and vice versa.
This is fixed by adding device quirks to transform the touch points
into the correct spaces, from X -> MAX(X) - X, and Y -> MAX(Y) - Y.
Signed-off-by: Allen Ballway <ballway@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-quirks.c')
| -rw-r--r-- | drivers/hid/hid-quirks.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c index 0e9702c7f7d6..78452faf3c9b 100644 --- a/drivers/hid/hid-quirks.c +++ b/drivers/hid/hid-quirks.c @@ -19,6 +19,7 @@ #include <linux/input/elan-i2c-ids.h> #include "hid-ids.h" +#include "i2c-hid/i2c-hid.h" /* * Alphabetically sorted by vendor then product. @@ -1298,6 +1299,11 @@ unsigned long hid_lookup_quirk(const struct hid_device *hdev) quirks = hid_gets_squirk(hdev); mutex_unlock(&dquirks_lock); + /* Get quirks specific to I2C devices */ + if (IS_ENABLED(CONFIG_I2C_DMI_CORE) && IS_ENABLED(CONFIG_DMI) && + hdev->bus == BUS_I2C) + quirks |= i2c_hid_get_dmi_quirks(hdev->vendor, hdev->product); + return quirks; } EXPORT_SYMBOL_GPL(hid_lookup_quirk); |