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From: Dmitry Osipenko <digetx@gmail.com>
To: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>,
	"David Heidelberg" <david@ixit.cz>,
	"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
	"Henrik Rydberg" <rydberg@bitmath.org>,
	"James Chen" <james.chen@emc.com.tw>,
	"Johnny Chuang" <johnny.chuang@emc.com.tw>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Scott Liu" <scott.liu@emc.com.tw>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 03/10] input: elants: remove unused axes
Date: Sun, 26 Apr 2020 19:35:47 +0300	[thread overview]
Message-ID: <0f66e93c-9c71-73d0-90b8-15e0802a79c5@gmail.com> (raw)
In-Reply-To: <b6cb0f810eec2d5c6245d6128502eebd342ca02a.1587916846.git.mirq-linux@rere.qmqm.pl>

26.04.2020 19:11, Michał Mirosław пишет:
> Driver only ever reports MT events and input_mt_init_slots() sets up
> emulated axes already.  Clear the capabilities not generated directly
> and move MT axes setup, so they are visible by input_mt_init_slots().
> 
> Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
> Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
> Tested-by: Dmitry Osipenko <digetx@gmail.com>
> ---
> v4: reword commitmsg; reorder axis setup
> ---

Legacy pointer emulation doesn't work using v4. I think it will be
better to drop this patch for now and add this hunk to the patch #4:

--- >8 ---
diff --git a/drivers/input/touchscreen/elants_i2c.c
b/drivers/input/touchscreen/elants_i2c.c
index 060c60c04f25..3644b5b48081 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -1414,6 +1414,8 @@ static int elants_i2c_probe(struct i2c_client *client,
 	input_abs_set_res(ts->input, ABS_X, ts->x_res);
 	input_abs_set_res(ts->input, ABS_Y, ts->y_res);

+	touchscreen_parse_properties(ts->input, false, &ts->prop);
+
 	/* Multitouch input params setup */
 	error = input_mt_init_slots(ts->input, MAX_CONTACT_NUM,
 				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
--- >8 ---

This hunk makes the DT properties to be applied for the legacy pointer,
fixing the cursor position on Nexus 7 device using Ubuntu 12.04. The MT
still works fine using Ubuntu 20.04.

Maybe input_mt_init_slots() could be changed to set up all the
properties that are needed for the legacy pointer, but I'm not 100% sure
because not very familiar with that code. Perhaps Dmitry Torokhov could
clarify?

  reply	other threads:[~2020-04-26 16:35 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-26 16:11 [PATCH v4 00/10] input: elants: Support Asus TF300T touchscreen Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 02/10] input: elants: support old touch report format Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 01/10] input: elants: document some registers and values Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 04/10] input: elants: override touchscreen info with DT properties Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 03/10] input: elants: remove unused axes Michał Mirosław
2020-04-26 16:35   ` Dmitry Osipenko [this message]
2020-04-26 17:29     ` Michał Mirosław
2020-04-26 17:45       ` Dmitry Osipenko
2020-04-26 17:58         ` Dmitry Osipenko
2020-04-26 18:15         ` Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 06/10] input: elants: read touchscreen size for EKTF3624 Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 05/10] input: elants: refactor elants_i2c_execute_command() Michał Mirosław
2020-04-26 16:24   ` Dmitry Osipenko
2020-04-26 17:40     ` Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 07/10] input: elants: support 0x66 reply opcode for reporting touches Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 08/10] dt-bindings: input: elants-i2c: Document common touchscreen properties Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 09/10] dt-bindings: input: elants-i2c: Document eKTF3624 Michał Mirosław
2020-04-26 16:11 ` [PATCH v4 10/10] dt-bindings: input: touchscreen: elants_i2c: convert to YAML Michał Mirosław
2020-04-27 21:14   ` Rob Herring
2020-04-28 14:08     ` Michał Mirosław
2020-04-29  1:38       ` Dmitry Osipenko

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