HID: i2c-hid-of: Expose the touchscreen-inverted properties
Allow the touchscreen-inverted-x/y device tree properties to control the
HID_QUIRK_X_INVERT/HID_QUIRK_Y_INVERT quirks for the hid-input device.
Signed-off-by: Alistair Francis <alistair@alistair23.me>
Acked-by: Rob Herring <robh@kernel.org>
[bentiss: silence checkpatch warnings]
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20211208124045.61815-3-alistair@alistair23.me
diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.txt b/Documentation/devicetree/bindings/input/hid-over-i2c.txt
index c76bafa..34c43d3 100644
--- a/Documentation/devicetree/bindings/input/hid-over-i2c.txt
+++ b/Documentation/devicetree/bindings/input/hid-over-i2c.txt
@@ -32,6 +32,8 @@
- vdd-supply: phandle of the regulator that provides the supply voltage.
- post-power-on-delay-ms: time required by the device after enabling its regulators
or powering it on, before it is ready for communication.
+- touchscreen-inverted-x: See touchscreen.txt
+- touchscreen-inverted-y: See touchscreen.txt
Example:
diff --git a/drivers/hid/i2c-hid/i2c-hid-acpi.c b/drivers/hid/i2c-hid/i2c-hid-acpi.c
index a6f0257..b96ae15 100644
--- a/drivers/hid/i2c-hid/i2c-hid-acpi.c
+++ b/drivers/hid/i2c-hid/i2c-hid-acpi.c
@@ -111,7 +111,7 @@ static int i2c_hid_acpi_probe(struct i2c_client *client)
}
return i2c_hid_core_probe(client, &ihid_acpi->ops,
- hid_descriptor_address);
+ hid_descriptor_address, 0);
}
static const struct acpi_device_id i2c_hid_acpi_match[] = {
diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
index 4cdd862..be00e07 100644
--- a/drivers/hid/i2c-hid/i2c-hid-core.c
+++ b/drivers/hid/i2c-hid/i2c-hid-core.c
@@ -912,7 +912,7 @@ static void i2c_hid_core_shutdown_tail(struct i2c_hid *ihid)
}
int i2c_hid_core_probe(struct i2c_client *client, struct i2chid_ops *ops,
- u16 hid_descriptor_address)
+ u16 hid_descriptor_address, u32 quirks)
{
int ret;
struct i2c_hid *ihid;
@@ -1009,6 +1009,8 @@ int i2c_hid_core_probe(struct i2c_client *client, struct i2chid_ops *ops,
goto err_mem_free;
}
+ hid->quirks |= quirks;
+
return 0;
err_mem_free:
diff --git a/drivers/hid/i2c-hid/i2c-hid-of-goodix.c b/drivers/hid/i2c-hid/i2c-hid-of-goodix.c
index 5267414..b4dad66 100644
--- a/drivers/hid/i2c-hid/i2c-hid-of-goodix.c
+++ b/drivers/hid/i2c-hid/i2c-hid-of-goodix.c
@@ -150,7 +150,7 @@ static int i2c_hid_of_goodix_probe(struct i2c_client *client,
goodix_i2c_hid_deassert_reset(ihid_goodix, true);
mutex_unlock(&ihid_goodix->regulator_mutex);
- return i2c_hid_core_probe(client, &ihid_goodix->ops, 0x0001);
+ return i2c_hid_core_probe(client, &ihid_goodix->ops, 0x0001, 0);
}
static const struct goodix_i2c_hid_timing_data goodix_gt7375p_timing_data = {
diff --git a/drivers/hid/i2c-hid/i2c-hid-of.c b/drivers/hid/i2c-hid/i2c-hid-of.c
index 4bf7cea..97a27a8 100644
--- a/drivers/hid/i2c-hid/i2c-hid-of.c
+++ b/drivers/hid/i2c-hid/i2c-hid-of.c
@@ -21,6 +21,7 @@
#include <linux/delay.h>
#include <linux/device.h>
+#include <linux/hid.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -71,6 +72,7 @@ static int i2c_hid_of_probe(struct i2c_client *client,
struct device *dev = &client->dev;
struct i2c_hid_of *ihid_of;
u16 hid_descriptor_address;
+ u32 quirks = 0;
int ret;
u32 val;
@@ -105,8 +107,14 @@ static int i2c_hid_of_probe(struct i2c_client *client,
if (ret)
return ret;
+ if (device_property_read_bool(dev, "touchscreen-inverted-x"))
+ quirks |= HID_QUIRK_X_INVERT;
+
+ if (device_property_read_bool(dev, "touchscreen-inverted-y"))
+ quirks |= HID_QUIRK_Y_INVERT;
+
return i2c_hid_core_probe(client, &ihid_of->ops,
- hid_descriptor_address);
+ hid_descriptor_address, quirks);
}
static const struct of_device_id i2c_hid_of_match[] = {
diff --git a/drivers/hid/i2c-hid/i2c-hid.h b/drivers/hid/i2c-hid/i2c-hid.h
index 05a7827..236cc06 100644
--- a/drivers/hid/i2c-hid/i2c-hid.h
+++ b/drivers/hid/i2c-hid/i2c-hid.h
@@ -32,7 +32,7 @@ struct i2chid_ops {
};
int i2c_hid_core_probe(struct i2c_client *client, struct i2chid_ops *ops,
- u16 hid_descriptor_address);
+ u16 hid_descriptor_address, u32 quirks);
int i2c_hid_core_remove(struct i2c_client *client);
void i2c_hid_core_shutdown(struct i2c_client *client);