Thread (15 messages) 15 messages, 2 authors, 2021-04-10

[PATCH 7/8 v3] Input: cyttsp - Set abs params for ABS_MT_TOUCH_MAJOR

From: Linus Walleij <hidden>
Date: 2021-04-08 13:12:36
Subsystem: cyttsp touchscreen driver, input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers: Linus Walleij, Dmitry Torokhov, Linus Torvalds

The driver is certainly reporting pressure in
cyttsp_report_tchdata() with
input_report_abs(input, ABS_MT_TOUCH_MAJOR, tch->z);
so we should also advertise this capability.

Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Linus Walleij <redacted>
---
ChangeLog v1->v3:
- Collect Javier's Reviewed-by.
---
 drivers/input/touchscreen/cyttsp_core.c | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c
index 8ae9f00e5e31..ac412bcb15d8 100644
--- a/drivers/input/touchscreen/cyttsp_core.c
+++ b/drivers/input/touchscreen/cyttsp_core.c
@@ -667,6 +667,9 @@ struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
 
 	input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
 	input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
+	/* One byte for width 0..255 so this is the limit */
+	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+
 	touchscreen_parse_properties(input_dev, true, NULL);
 
 	error = input_mt_init_slots(input_dev, CY_MAX_ID, 0);
-- 
2.29.2
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