[PATCH v2 0/2] input: touchscreen: atmel_mxt_ts: add support for generic touchscreen configurations

[PATCH v2 0/2] input: touchscreen: atmel_mxt_ts: add support for generic touchscreen configurations

[Svyatoslav Ryhel]

This provides support for generic touchscreen configuration options like
swapped-x-y, min-x, min-y, size-x, size-y, etc.

---
Changes in v2:
- added schema adjustment
---

Svyatoslav Ryhel (2):
  dt-bindings: input: maxtouch: add common touchscreen properties
  input: touchscreen: atmel_mxt_ts: add support for generic touchscreen
    configurations

 .../devicetree/bindings/input/atmel,maxtouch.yaml     |  3 ++-
 drivers/input/touchscreen/atmel_mxt_ts.c              | 11 +++++++----
 2 files changed, 9 insertions(+), 5 deletions(-)

-- 
2.48.1

[PATCH v2 1/2] dt-bindings: input: maxtouch: add common touchscreen properties

[Svyatoslav Ryhel]

Since atmel,maxtouch describes touchscreens too, it should include common
touchscreen properties.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
 Documentation/devicetree/bindings/input/atmel,maxtouch.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.yaml b/Documentation/devicetree/bindings/input/atmel,maxtouch.yaml
index c40799355ed7..d79b254f1cde 100644
--- a/Documentation/devicetree/bindings/input/atmel,maxtouch.yaml
+++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.yaml
@@ -16,6 +16,7 @@ description: |
 
 allOf:
   - $ref: input.yaml#
+  - $ref: touchscreen/touchscreen.yaml#
 
 properties:
   compatible:
@@ -95,7 +96,7 @@ required:
   - reg
   - interrupts
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |
-- 
2.48.1

Re: [PATCH v2 1/2] dt-bindings: input: maxtouch: add common touchscreen properties

[Rob Herring (Arm)]

On Tue, 09 Sep 2025 08:49:02 +0300, Svyatoslav Ryhel wrote:
> Since atmel,maxtouch describes touchscreens too, it should include common
> touchscreen properties.
> 
> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
> ---
>  Documentation/devicetree/bindings/input/atmel,maxtouch.yaml | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>

[PATCH v2 2/2] input: touchscreen: atmel_mxt_ts: add support for generic touchscreen configurations

[Svyatoslav Ryhel]

This provides support for generic touchscreen configuration options like
swapped-x-y, min-x, min-y, size-x, size-y, etc.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
 drivers/input/touchscreen/atmel_mxt_ts.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 322d5a3d40a0..fc624101147e 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -19,6 +19,7 @@
 #include <linux/firmware.h>
 #include <linux/i2c.h>
 #include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/of.h>
@@ -355,6 +356,8 @@ struct mxt_data {
 	enum mxt_suspend_mode suspend_mode;
 
 	u32 wakeup_method;
+
+	struct touchscreen_properties prop;
 };
 
 struct mxt_vb2_buffer {
@@ -888,8 +891,7 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8 *message)
 
 		/* Touch active */
 		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1);
-		input_report_abs(input_dev, ABS_MT_POSITION_X, x);
-		input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
+		touchscreen_report_pos(input_dev, &data->prop, x, y, true);
 		input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude);
 		input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area);
 	} else {
@@ -1010,8 +1012,7 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 			id, type, x, y, major, pressure, orientation);
 
 		input_mt_report_slot_state(input_dev, tool, 1);
-		input_report_abs(input_dev, ABS_MT_POSITION_X, x);
-		input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
+		touchscreen_report_pos(input_dev, &data->prop, x, y, true);
 		input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major);
 		input_report_abs(input_dev, ABS_MT_PRESSURE, pressure);
 		input_report_abs(input_dev, ABS_MT_DISTANCE, distance);
@@ -2212,6 +2213,8 @@ static int mxt_initialize_input_device(struct mxt_data *data)
 				     0, 255, 0, 0);
 	}
 
+	touchscreen_parse_properties(input_dev, true, &data->prop);
+
 	/* For T15 and T97 Key Array */
 	if (data->T15_reportid_min || data->T97_reportid_min) {
 		for (i = 0; i < data->t15_num_keys; i++)
-- 
2.48.1

Re: [PATCH v2 0/2] input: touchscreen: atmel_mxt_ts: add support for generic touchscreen configurations

[Dmitry Torokhov]

On Tue, Sep 09, 2025 at 08:49:01AM +0300, Svyatoslav Ryhel wrote:
> This provides support for generic touchscreen configuration options like
> swapped-x-y, min-x, min-y, size-x, size-y, etc.
> 
> ---
> Changes in v2:
> - added schema adjustment

Applied the lot, thank you.

-- 
Dmitry