From nobody Sun Oct 5 14:12:40 2025 Received: from mail-oo1-f73.google.com (mail-oo1-f73.google.com [209.85.161.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 81A0C2749D7 for ; Mon, 4 Aug 2025 14:11:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754316692; cv=none; b=Thw8zcbP6SQycILeKb9pmUvViyYNvasJfA31jx+SZ1qeRoDBActaXh7jHG/98cGUjypbRbCIH61KA1WqWGxVJblszbTypi3HqvGScV7YrX2hKDL46gOwzNRc7+kpWS62vFc0+Ak297qle1H5/MHKfFysREwJsjjL1w8LeOebeL0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754316692; c=relaxed/simple; bh=6aJ0IUU1tiFShlsFi/Km91IALlxM+CUT5l8lbTEFVkI=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=nEd1opTRAKpQMEd4CxIh37JMZGTPSB9DP12td1mIgw1zboZ0EC0WGuPcEkeOICCo9GQXvtKfWUnvLLnEuQOppM5QSjPbr2SDmrTMX/Jo4M5eeAtssh66ftK5nJodELAAv/rgqOmY3hMB3Z/HGKhRFcUFqHjkD5VRtkG30PrSqTA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jdenose.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Ho/n3djK; arc=none smtp.client-ip=209.85.161.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jdenose.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Ho/n3djK" Received: by mail-oo1-f73.google.com with SMTP id 006d021491bc7-619083195d1so3438482eaf.2 for ; Mon, 04 Aug 2025 07:11:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1754316688; x=1754921488; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Ek7nkTx7oQBr5pmhvnHkJbcjWINhcn0PApuRdg7tPwI=; b=Ho/n3djK/vOziCz6veotTl0aEjkAhlwcVGf6dNfvF9zXQik5iO6xiiBrkdLCEFApk4 RIFUMfGPNJWGAZPyZROIkRTbuUcygeQWU6RnCSQolUdilBctaEfrb9uDipDSFHEhUqFh fZ0JtCDjFKX+yncnF5EhAHriRlDOGOIg0b6oImbBDqTqnBy9wtmdOl4yS52DJPQCOm0A mw7G9Z/vGt3ztODPBC7lWqG9LaxXZ/Px3JBPz9IkafHgOx8NC5iKGRxpLD7f0LgDtdc1 0+l94PFKJQ82NR2OHkMbuXHQEyNZhfZ4oNHtRWIHPdnfYBCBkgm1gndUiokD1UbclRrJ 1vNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754316688; x=1754921488; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Ek7nkTx7oQBr5pmhvnHkJbcjWINhcn0PApuRdg7tPwI=; b=qhcRf8+GpCGFVIthBVEyB2l+8RTk2/muoKIie5z0txG0CNOjv4DDiIgzymp0Zmg+Y3 CVUpq+vX2M4O/zbazzAgi4KfvDEVgguCp05bl0D1sCau2+7rRXqilEEFhIJyJ8pC33Dy +SaOxGcWOWWPuZ8pHa3QzWhf4QGL0wKmbZd/jx0jL3dm2mg1JGXiSkdNCeSD1Mt8wVbG 23GW3FUplPulgHo1JxvYNIYgi1FnML4k+EPZis1dn2O83u5W3iBZ5S8SX1fsgNsn/vJR nFivqtXwbHbbseWONFllex0b7zuMYGopTsro+6CbZMdICwtD1vvUcIByw7P9/uNrM55B j9Nw== X-Forwarded-Encrypted: i=1; AJvYcCWlFgP3CZuhqXdM6ETP/DUxd7SowkSumUgyGp61b5Iazk9LfLRDmxk/emaxYeXw1o3PgyYNkh97sRJQ/rY=@vger.kernel.org X-Gm-Message-State: AOJu0YzEwk3H+JeVmX6EDgqzZR2lrRQgBY6vjVSD2Ll1KlUOUuhcFpoP EnhF3uqs56waXMSNZlohkMkgKHHpMOLx03mQCv7bQdOCNZUN+DHwFEym67v4Mxd7hDepBz6CwHR 5Ghs0NVl+5g== X-Google-Smtp-Source: AGHT+IEjr5sJfjbBUQYWZhIZ4rOglGuDpQpVSXj939XY+s2kAy7ykktL0lHdO88lLNN48OXhn6sUKk4ZSq/C X-Received: from ooak5.prod.google.com ([2002:a05:6820:c005:b0:619:c124:3048]) (user=jdenose job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6820:f02:b0:619:81ef:2511 with SMTP id 006d021491bc7-6198ef440a8mr5302900eaf.0.1754316688530; Mon, 04 Aug 2025 07:11:28 -0700 (PDT) Date: Mon, 04 Aug 2025 14:11:24 +0000 In-Reply-To: <20250804-support-forcepads-v2-0-138ca980261d@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250804-support-forcepads-v2-0-138ca980261d@google.com> X-Mailer: b4 0.14.2 Message-ID: <20250804-support-forcepads-v2-9-138ca980261d@google.com> Subject: [PATCH v2 09/11] Input: MT - add INPUT_MT_TOTAL_FORCE flags From: Jonathan Denose To: Jiri Kosina , Benjamin Tissoires , Dmitry Torokhov , Jonathan Corbet , Henrik Rydberg Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Angela Czubak , "Sean O'Brien" , Jonathan Denose Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Angela Czubak Add a flag to generate ABS_PRESSURE as sum of ABS_MT_PRESSURE across all slots. This flag should be set if one knows a device reports true force and would like to report total force to the userspace. Signed-off-by: Angela Czubak Co-developed-by: Jonathan Denose Signed-off-by: Jonathan Denose --- drivers/input/input-mt.c | 14 ++++++++++---- include/linux/input/mt.h | 1 + 2 files changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 337006dd9dcf72ef2eeb8580e4dd83babf8100be..09f518897d4a71a4a7625367dc2= c652ee6035d98 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -198,6 +198,7 @@ void input_mt_report_pointer_emulation(struct input_dev= *dev, bool use_count) struct input_mt *mt =3D dev->mt; struct input_mt_slot *oldest; int oldid, count, i; + int p, reported_p =3D 0; =20 if (!mt) return; @@ -216,6 +217,13 @@ void input_mt_report_pointer_emulation(struct input_de= v *dev, bool use_count) oldest =3D ps; oldid =3D id; } + if (test_bit(ABS_MT_PRESSURE, dev->absbit)) { + p =3D input_mt_get_value(ps, ABS_MT_PRESSURE); + if (mt->flags & INPUT_MT_TOTAL_FORCE) + reported_p +=3D p; + else if (oldid =3D=3D id) + reported_p =3D p; + } count++; } =20 @@ -245,10 +253,8 @@ void input_mt_report_pointer_emulation(struct input_de= v *dev, bool use_count) input_event(dev, EV_ABS, ABS_X, x); input_event(dev, EV_ABS, ABS_Y, y); =20 - if (test_bit(ABS_MT_PRESSURE, dev->absbit)) { - int p =3D input_mt_get_value(oldest, ABS_MT_PRESSURE); - input_event(dev, EV_ABS, ABS_PRESSURE, p); - } + if (test_bit(ABS_MT_PRESSURE, dev->absbit)) + input_event(dev, EV_ABS, ABS_PRESSURE, reported_p); } else { if (test_bit(ABS_MT_PRESSURE, dev->absbit)) input_event(dev, EV_ABS, ABS_PRESSURE, 0); diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index 2cf89a538b18bbc7c99c8705c2d22bdc95065238..d30286298a00a356bc9db954ae3= 62f034cdd359b 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -17,6 +17,7 @@ #define INPUT_MT_DROP_UNUSED 0x0004 /* drop contacts not seen in frame */ #define INPUT_MT_TRACK 0x0008 /* use in-kernel tracking */ #define INPUT_MT_SEMI_MT 0x0010 /* semi-mt device, finger count handled ma= nually */ +#define INPUT_MT_TOTAL_FORCE 0x0020 /* calculate total force from slots pr= essure */ =20 /** * struct input_mt_slot - represents the state of an input MT slot --=20 2.50.1.565.gc32cd1483b-goog