From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752068AbdBTBRo (ORCPT ); Sun, 19 Feb 2017 20:17:44 -0500 Received: from mail-pg0-f65.google.com ([74.125.83.65]:35736 "EHLO mail-pg0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751534AbdBTBRm (ORCPT ); Sun, 19 Feb 2017 20:17:42 -0500 Date: Sun, 19 Feb 2017 17:10:45 -0800 From: Dmitry Torokhov To: "H. Nikolaus Schaller" Cc: linux-input@vger.kernel.org, Jonathan Cameron , LKML , Sebastian Reichel Subject: Re: [PATCH] Input: tsc2007 - switch to using input_set_capability() Message-ID: <20170220011045.GC8358@dtor-ws> References: <20170217225627.GA27132@dtor-ws> <6EE891F1-A20E-4AB3-934C-09B35FF7DE30@goldelico.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6EE891F1-A20E-4AB3-934C-09B35FF7DE30@goldelico.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Feb 18, 2017 at 03:58:39PM +0100, H. Nikolaus Schaller wrote: > Hi Dmitry, > > > Am 17.02.2017 um 23:56 schrieb Dmitry Torokhov : > > > > Do not manipulate evbit/keybit directly, use helper for that. > > > > Signed-off-by: Dmitry Torokhov > > --- > > drivers/input/touchscreen/tsc2007_core.c | 3 +-- > > 1 file changed, 1 insertion(+), 2 deletions(-) > > > > diff --git a/drivers/input/touchscreen/tsc2007_core.c b/drivers/input/touchscreen/tsc2007_core.c > > index fdf81a2b989a..98dbefc3357d 100644 > > --- a/drivers/input/touchscreen/tsc2007_core.c > > +++ b/drivers/input/touchscreen/tsc2007_core.c > > @@ -364,8 +364,7 @@ static int tsc2007_probe(struct i2c_client *client, > > > > input_set_drvdata(input_dev, ts); > > > > - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); > > - input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); > > + input_set_capability(input_dev, EV_KEY, BTN_TOUCH); > > basically a good improvement, but removing the BIT_MASK(EV_ABS) makes problems > when replacing the next lines > > > > > input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, ts->fuzzx, 0); > > input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, ts->fuzzy, 0); > > by touchscreen_parse_properties() as done by my patch set. > > The problem is that touchscreen_parse_properties() does not call > input_set_abs_params() but touchscreen_set_params(). This does not > call some input_set_capability(dev, EV_ABS, axis) but rather checks > that it has been set before! Hence we only see warnings in the log and > no input event properties (BTN_TOUCH works but without position > information). Yes, the driver is supposed to set defaults, then OF data may augment them (or it may omit them and leave driver's defaults). You should not have removed calls to input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, ts->fuzzx, 0); We may end up setting initial fuzz to 0, that's fine. Thanks. -- Dmitry