The GP-electronic T701 has its LCD panel mounted upside-down, initially
my plan was to fix this by transparently rotating the image in the i915
driver (my "drm/i915: Deal with upside-down mounted LCD" patch), but
that approach has been rejected instead the kernel will now export
a "panel orientation" property on the drm-connector for the panel and
let userspace deal with it.
But userspace expects the touchscreen coordinates to match the panel
coordinates *before* applying any rotation, so now that we no longer hide
the upside-down-ness of the LCD panel from userspace the coordinates being
generated are wrong and we need to apply a rotation of 180 degrees to the
coordinates to fix this.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/platform/x86/silead_dmi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/platform/x86/silead_dmi.c b/drivers/platform/x86/silead_dmi.c
index a0f80f971081..ac304f2318cc 100644
--- a/drivers/platform/x86/silead_dmi.c
+++ b/drivers/platform/x86/silead_dmi.c
@@ -85,6 +85,8 @@ static const struct silead_ts_dmi_data surftab_wintron70_st70416_6_data = {
static const struct property_entry gp_electronic_t701_props[] = {
PROPERTY_ENTRY_U32("touchscreen-size-x", 960),
PROPERTY_ENTRY_U32("touchscreen-size-y", 640),
+ PROPERTY_ENTRY_BOOL("touchscreen-inverted-x"),
+ PROPERTY_ENTRY_BOOL("touchscreen-inverted-y"),
PROPERTY_ENTRY_STRING("firmware-name",
"gsl1680-gp-electronic-t701.fw"),
{ }
--
2.14.2
