From nobody Tue Oct 7 05:31:06 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 1956425FA29 for ; Mon, 14 Jul 2025 15:09:48 +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=1752505790; cv=none; b=Sw4nho8uXXFHDaeQ+YyV+aLPiWnLiit60qGgtekFtVFihAfrhBfkL65TFfNjRaMaX+Tvc5f4e2u6AbrB9pSkoT3e/DkZ1r5iSHT9AgTkhtBgLOU5tUrwPy75Cj7SR+sP9DdDQ00cnxPrqGTOeg3DDi8kxbv5xmwJBx/J+jb5LFk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752505790; c=relaxed/simple; bh=UrnSB+AYwWQCe3zBRSCE/AsL/WcQasDyOs6FFVGl3U0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=lkr9AzKj+e7v7mCCn/jiMhJbX4YlsKnCi4RbUnZsIBGNxrlTulIMmgwzGuo6tdSYQYHbSNKY/icLd+VbQfKi58vyPan5ac3Q4w0hXcHzGNj7hkXbyBKxJgLyGk5YEqDHC6Kztoks7vNQsLj820+3olm0hMjTbCcCb874QHuI8kY= 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=LvN767ax; 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="LvN767ax" Received: by mail-io1-f74.google.com with SMTP id ca18e2360f4ac-87313ccba79so879787239f.2 for ; Mon, 14 Jul 2025 08:09:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1752505787; x=1753110587; 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=1XeQ2f7hdl7fMjWobSYvSh68hOpph/lgZTAzcMslzSQ=; b=LvN767axR9tglj3JkzFEbioR2+xhMvi9TVP1EnqrfNTrKBy/QVzdqWVMN3idF5VaF4 GlwV+3bjA1Omh+Cmw7deIVEPGrNMb8L94V+BpmnNumCwzMlyf8nU+aaNasgm7sJ0k1Oi PZ67lZ7Peq5CyqBnzfJC5oe19lA83UgMiMiS4FiCGDJWOHmhlCa62NlaqDW73vfqTYY9 A4lbzN5tPMkNYmtpl3KT0008m8hArvwjietVVLHCTdUbYkKPTfWzbsmUp5KJHa0q0mIn MF0J24UGlR5k9vcoZKiALb7qQAkzw1r3Hy5KjDm7vL2G7KyRres2RokkHcbMIk7oXSuK 1RXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752505787; x=1753110587; 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=1XeQ2f7hdl7fMjWobSYvSh68hOpph/lgZTAzcMslzSQ=; b=gk4TBkuS/pfaVNvrGYBVXmreOPVnxsTQ61t0IBOuyTkC9hlvD7RL5zzr9jxLs2kKWh kNZIAQlIiFpNE40UrqPsLdDhDNLtzsTaznGiq5bJJYNCi4RedhP1XwY8czvBycgNYXxj ruMb+hSB1ZDSjy4Sn/156P8a19JuG4pgLoF/i8y/by7uKBixsGY0Nn4ZwV6iy10Buwgv KwCxvzZ+KRgakVz6YLvjAe64EVeoj0NbPaPq3rfdHDOY3H4jQdNrcff0PbwdBrS1nLC/ TC7PZ9oGbil6YR8/ITQ5rClaTODb/sYH+NM+43CXSp8ZEz/hCmOVjYBa4Z1Pu/JY41oq Ag+Q== X-Forwarded-Encrypted: i=1; AJvYcCVoyXgQVkjoEKxJAbwxyRhE4ZOZ5dVu8oNylnj46+z+FprZSup0IRae7MG+5RmQsf50zux3vjiVlMqiqLY=@vger.kernel.org X-Gm-Message-State: AOJu0YxZamw78eKNwcB1gAuwyjta4xkAldVL7pJdMS6wWYoGT+29J+Us 5NhzqpkKS3WFtmqaIjQGqTd6t4TAAZYDOlyTLFnXb7IxDZT/AEyf60zE1rPWqQmC47pl7zPCLsV LOn3NDedqwQ== X-Google-Smtp-Source: AGHT+IHBbM/0ggsfRNUfgicPHaMmWiNqsB8R07KqRu569QcPVbUgLFwgBVvWjp+gQAKMnIvWOYpBtbh0Vj4h X-Received: from iovt22.prod.google.com ([2002:a05:6602:1416:b0:86c:fede:130b]) (user=jdenose job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6602:36cf:b0:86a:93c:f5fb with SMTP id ca18e2360f4ac-879787a0c07mr1320634039f.1.1752505787532; Mon, 14 Jul 2025 08:09:47 -0700 (PDT) Date: Mon, 14 Jul 2025 15:09:42 +0000 In-Reply-To: <20250714-support-forcepads-v1-0-71c7c05748c9@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250714-support-forcepads-v1-0-71c7c05748c9@google.com> X-Mailer: b4 0.14.2 Message-ID: <20250714-support-forcepads-v1-9-71c7c05748c9@google.com> Subject: [PATCH 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 2.50.0.727.gbf7dc18ff4-goog