From nobody Sat Oct 4 09:32:23 2025 Received: from mail-io1-f74.google.com (mail-io1-f74.google.com [209.85.166.74]) (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 E1D9E27EFE9 for ; Mon, 18 Aug 2025 23:10:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755558645; cv=none; b=e+1MFrNYWK/UCP1kaWb71vRlkzhhvN97ik8cn143a32TQfWn8aHl9EVM8Q3gySHePMWVjT7YzfkIcGFD+BvUUFKyUcQ7KTImmUSrK5t0ksapz/zIIZpAjjGsTkAxHYRAgkOqDZQE6Eog1+Pep5ov6Z1wQwmmADozqCuMosIxxig= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755558645; c=relaxed/simple; bh=fOUQ9iN+/TFHSMLuk8u/9z0NqvmTbx1gpw+j00H42/I=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=oNDHbNOdJSDzhbdtaomnNVajbURH8ObEGThSoixqfrBuBl+2GlOmFo35qP0Fv9D8zxDPfh6T6u06ezXRzWJpxS8pBi1ty9OPoKLx3uJfWJBDHdLSGoen6ROQGttyM9C+HNMQQV14JTUnqxJ+wmKP3uq/eWOeeOD6G4FmtPaY8W4= 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=Pb6gLOym; arc=none smtp.client-ip=209.85.166.74 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="Pb6gLOym" Received: by mail-io1-f74.google.com with SMTP id ca18e2360f4ac-88432cb7627so476269239f.0 for ; Mon, 18 Aug 2025 16:10:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1755558643; x=1756163443; 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=Xze907Psa5S/IYsuccVxAJQ0ljBH6WFw3XWFWUMA8Qk=; b=Pb6gLOymF78pcFKu/yTkaCyui64GqS000a7v2BPGC3fhIQaux2tdTv9ksI2vY48enA yRYJvtOorJN4aT7i5Y20mM8mNC33qiSaSRo6+yoyvquoWzPeFfqKS3Sni+YCGhaBaKuk C2ndCa5NZ5mJojRu5Rung9HUMHDa295rWax81DHaD+lJ0iICaOL8VBdiYhvaiuUdltqK 74+vykMcryqxBVfLzk6Mb7RQyWKoyQfIIIRQ5mWPR8sk1xEG4mK4nkO1/CycV7D5aGKn LIvVEFvN6XHMkBQ+0al4MBT+/Pmt6Z5UXvTGYpUn1X9BBb5AcpUeEdPG/+8O5/Gyz+kb OIBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755558643; x=1756163443; 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=Xze907Psa5S/IYsuccVxAJQ0ljBH6WFw3XWFWUMA8Qk=; b=V32FIO9Go2x4mk8o94L0em6kXbW4u/KW8unE0ryNsdFtAtYM2tdRU0pm+1CMTkpC9c qfx2CF4B+23Yu/X83SdAWHbE9jiH7s7vnu8lbMZRxC61paaSBIzAg5Gun6hs9CgI/vOP nEZq5LoLeLI3GgW4HZpHPaNVNXhFbT00opnDpqGeRWCu2AJHFdkCRjXtJf/CrwcOvLJc hCdNbGdWxOitsmZJbUxCB+Eovs1ncWM0VVtbgKbGEOk0WM2NnVKOIC/pYS0dw3Dfj4+Z 8MUnoYl9gbHEM7V6endM3socvF4WJPAzgtwzdAv418KSnV8CMRkvCXZ/bmuzP/5/dQao i0Sw== X-Forwarded-Encrypted: i=1; AJvYcCXREbkQax9+UKuEJJXSH6zk+xyjBeeKOztGzNcQMc3vV1T3U2yKhAh2fCrGKvBvfh9wjzNLtDuGkEbRxZw=@vger.kernel.org X-Gm-Message-State: AOJu0YzH2H+0BFDisSA90ImERIVeegw04x0SoHv4F+9ZEr56CogSYYcF OBjtD0pNkFCh0Retm9xMoXyXeiOLNu0HNznkCEcDrHB83fGnJSxwBhrOJU8g1Ceq7TCPnV+MUTi oa4DJ43fAWg== X-Google-Smtp-Source: AGHT+IEae1a+RGpmevjA4aZuqHwjm+8LM/JeSvDhnxxKn/QsDajDWX8k6ANbWJ5eqhAEwHBj0zXnOe75dCaS X-Received: from iobjk23.prod.google.com ([2002:a05:6602:7217:b0:881:8ed2:a750]) (user=jdenose job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6602:2d8b:b0:87c:1d65:3aeb with SMTP id ca18e2360f4ac-88467e8caa0mr98419439f.2.1755558643163; Mon, 18 Aug 2025 16:10:43 -0700 (PDT) Date: Mon, 18 Aug 2025 23:08:50 +0000 In-Reply-To: <20250818-support-forcepads-v3-0-e4f9ab0add84@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250818-support-forcepads-v3-0-e4f9ab0add84@google.com> X-Mailer: b4 0.14.2 Message-ID: <20250818-support-forcepads-v3-9-e4f9ab0add84@google.com> Subject: [PATCH v3 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 Acked-by: Dmitry Torokhov --- 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 2.51.0.rc1.193.gad69d77794-goog