From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CE908438474 for ; Wed, 15 Jul 2026 12:22:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784118157; cv=none; b=VADuYdheUh9wcMvSzzJTv7x588yPi1Daz55Kh/4yu5qtMKMAwm25iGtVo5iQx9/+Rcva6QKxv7RN3+mKCaCChcCKKywU0583vDM5Y4QwftthrI0729wCLCq0F0z9bBJEF6BkjU7IQRtnOrb7WQd+Dms5B3O0uRNpiyAzab13E7g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784118157; c=relaxed/simple; bh=PZa+it5ln/dZYcDQVhHQXLPvxKtKTwctIopAUS1NAD4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=u6yJnMeWN/M6VSaBtlwszturGSB4d6nEBbS6cP/q2Ra3EKt1T24aRz1X3K+NfA/UgBWsuZ4o/y7f6Wnz/PLLeSN26hwqn/HEDxlWJt6Z/PVoIijf+IRFU6cOEruf2MSHtNdTkdRX6QNGnPYeDXEgFyibh80v2nRoiRDYm8xn6pM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=gUlhy41E; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=YiDiEOpn; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="gUlhy41E"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="YiDiEOpn" Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 66FBcdiq3480060 for ; Wed, 15 Jul 2026 12:22:34 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= b9uVtnp4ftgJs/XKrszPRlmmg1Es/wCizqUifj6MXDo=; b=gUlhy41E5kpGea3a BB/5TjJubdLBbShBspxaioRA3zRpyuDaKtkVR/wpGTPVFOFfmDQ5VJnluUXqLBoM oNWPHNhzq2VZK1v0u5HynxX+G7Pk0W96tCUXdZdLLFcPtERI5rZiY0nCPJj4Txon wGIfNPgYbygwq4ldkVQlvR77PLCsywATtUe7pTGRY5kVZdDewvsUVQQBM8lcqFs7 aQlBBPIXbxL5X0AMHKVOaS2yyHVcMkRjkAB9rtJ26gQLEdMvY9sa90T9+7+aH43t ehYUjxSrz7oFz8oCmJV9TgrS5o9mvj9JFTgZN8utN/faivcBtBnhDb5SK1xRbtuQ RZrx/Q== Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4fe56h99v7-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Wed, 15 Jul 2026 12:22:34 +0000 (GMT) Received: by mail-qk1-f197.google.com with SMTP id af79cd13be357-92e661ce1dcso98542685a.0 for ; Wed, 15 Jul 2026 05:22:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1784118153; x=1784722953; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=b9uVtnp4ftgJs/XKrszPRlmmg1Es/wCizqUifj6MXDo=; b=YiDiEOpnIX6kUmKqJ6UeCTr31JEQPSPMobQYrqFC8yvrQzLIKtWk2X/GrAjTiQPY3k i6vIFkQ6miRAIBpQjlZKQtGha7V5vfsBIAx1+zHGdxliaCmjUBnZhAErOz0XLhdfi4QM Le/wwF/870k7kEdZBd6rWM6SNOlllMcpnJhaXYGKcVZVeF5woImzVYJzW8u7W535+2BF TLKq103haV8/8Qs+e91yc7SaRNhGMwqrCCon62FU54K1xnzvY454lnzCmP1jsfkZbubb EaNAHdBL4ph8wiB7NYTFPNS50WsFoQvQOaqBYZkIhDIcgeANg8MOLjs46H5oVwf1Sm3A wwqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784118153; x=1784722953; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=b9uVtnp4ftgJs/XKrszPRlmmg1Es/wCizqUifj6MXDo=; b=NOzwePl08Rxw5fLO7Ka5Uyc1P4Kysq41tztqUVmh6HZ27mAzeS1I35WTjQ8QHvI1VU KQDeoJlNxOTuh64wck0/EoP9KbiHnKX5xdV1tCXwJAmMvk6e3cigekLJdMJNrgHEV6n7 YOl4X9Hz/113N86JX9RerRJRcaw2Y9Z/m4R+WvRrI8sR9niTY0yt8k+lAjqNCw2Hi3H3 o5ITm8kMJDO2Aohfo4Nq4pTvw7HVKHeqc/kCOLMUtfa4m+lOGtT2UCH6jTXcIm9pXqlv mWKyDJDB+hpg30s5NLkajY33Om2+bILk3C4KLDeR0HoU+gM7kSdfTCGfq/fiCSD14keJ eMxA== X-Forwarded-Encrypted: i=1; AHgh+RpXCZ271gkiAlw7z7IDOoqCsOLQImr111LBQZacCH+yfo7Xuk6UIuTJUM5l1dSqLZSCz6l2XXOEg2s=@vger.kernel.org X-Gm-Message-State: AOJu0YwT8Wq/cAXFV5iT/1D+z+htowFeSN38MTIuOCrvTK5Va96lV4LI brd7ZzYHrQpV86X6gZ8wfIUeHCIj9MutJIiZIQYMgP4LGYHbL2M3LDhvqF2qSZSCLRZwagd5+iL rHFvxgv832/Xw01VCAhrJabTOiOlfDksILdE6OemtvdABdBViAbbnFLBSKaVilTU= X-Gm-Gg: AfdE7clCPc7F3sXeAA7n5MKSflg960oAArtxn5F20wlatKjVGVtVk0jNNXrFbrZfXAd nuc2iqKBlOVyIpu6gDjUJH8iIo0DAvZg+xMWpHN+mCTTv0vaHvi3WtlygbMblBgepeCNWvWgC5E 3HtmRDNID4RwToGy5bqJYkfAl4ANkl8KVEDT4PHcTfNe9RECDu9BSHajzQB8J90W7F8q09jpa+s 17ndOa8vJMrA58iI/k1A6/W/YtUjs3moaMnuUnMAvGFiivLEMM0AWTnSw6PIW9aI96T6FwgEiKY UUPruBtiEHhOpOo1YzqXZVG4F27qKPPDKNl2sd0K8dmkU4U8u58Mbwz8MAcub3JIkV4Oyn44Rz2 tiTPj4nNiBQyYu/BZ+vtGFavNNC8aM1Vmw6A= X-Received: by 2002:a05:620a:458a:b0:92e:46cd:7299 with SMTP id af79cd13be357-92ef2c7f24fmr1309036985a.8.1784118152924; Wed, 15 Jul 2026 05:22:32 -0700 (PDT) X-Received: by 2002:a05:620a:458a:b0:92e:46cd:7299 with SMTP id af79cd13be357-92ef2c7f24fmr1309032085a.8.1784118152346; Wed, 15 Jul 2026 05:22:32 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c168744bdddsm15401266b.48.2026.07.15.05.22.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Jul 2026 05:22:31 -0700 (PDT) Message-ID: Date: Wed, 15 Jul 2026 14:22:27 +0200 Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 2/4] dmaengine: qcom: gpi: Add lock/unlock TREs for multi-owner I2C transfers To: Mukesh Kumar Savaliya , viken.dadhaniya@oss.qualcomm.com, andi.shyti@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, vkoul@kernel.org, Frank.Li@kernel.org, andersson@kernel.org, konradybcio@kernel.org, dmitry.baryshkov@oss.qualcomm.com, linmq006@gmail.com, quic_jseerapu@quicinc.com, zhengxingda@iscas.ac.cn, kees@kernel.org, agross@kernel.org, linux-arm-msm@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org Cc: krzysztof.kozlowski@oss.qualcomm.com, bartosz.golaszewski@oss.qualcomm.com, bjorn.andersson@oss.qualcomm.com References: <20260708051023.2872304-1-mukesh.savaliya@oss.qualcomm.com> <20260708051023.2872304-3-mukesh.savaliya@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260708051023.2872304-3-mukesh.savaliya@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE1MDEyMiBTYWx0ZWRfX/QLngdrhKz5W Kx4lsPdQWOZ8BCdqRMYeb6FoaHBe7Zz0SpEW3PNsBo35oBkKDsdj+7YKVDbjfdf2MUFsfr108HP Gi/GwUDEDB8wBKwHsUuwfXEwJJjP+gY= X-Proofpoint-ORIG-GUID: ikctD8RAWTApecIKTBR1d86Vs-xPMHYC X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE1MDEyMiBTYWx0ZWRfX3rhWDmrKJZw1 IAvi2g4FIQ98a8sX1nNS8+EuTfvtXdaKw9yK8zcCoBwQSdvsRleVdaskhdxWZTmJU9q5KrtrmWt 6LE3575xMz1sG7FpABthe3+FkfhqqAEFJkEungckj6QPjjfRQBbXYzd/JqnNOw8yBpL3Oq5i1/3 6+RNlmcp1Turv/FvsEEfMev7belT1zOQ9GzQU0P76N3CihS5D3BppO5dQkM6E6WglbsdLINyYup zsL1UvFIEKDrGBtPPiSTo/HK/sN0CKMS3Nq0r7tomvYL63HRKo+W2Q2koSXZwYRHrxBxk0+YFtY E8v7/Jhmm0T4WiWRyPTQ+NALxf48oDEetqVuaLhxBLXqFry7hXLsDMug4hBQLt6QXbrwTChW0iR bFYf3sTaoKBnld+noUcK6sbWmW/AebhDQAR6zNnd5KE1qP2BA7i7XBRLuCkSCiiN4CseBpzeBJD AIoTcjAfyfkbH6J+hcA== X-Authority-Analysis: v=2.4 cv=LpKiDHdc c=1 sm=1 tr=0 ts=6a577b8a cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=s1zqTiH2bahLR0COYxoA:9 a=QEXdDO2ut3YA:10 a=zgiPjhLxNE0A:10 a=ZXulRonScM0A:10 a=zZCYzV9kfG8A:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-GUID: ikctD8RAWTApecIKTBR1d86Vs-xPMHYC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-15_02,2026-07-15_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 adultscore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 malwarescore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607150122 On 7/8/26 7:10 AM, Mukesh Kumar Savaliya wrote: > Some platforms use a QUP-based I2C controller in a configuration where the > controller is shared with another system processor (described in DT using > qcom,qup-multi-owner). In such setups, GPI hardware lock/unlock TREs can be > used to serialize access to the controller. > > Add support to emit lock and unlock TREs around I2C transfers and increase > the maximum TRE count to account for the additional elements. > > Also simplify the client interface by replacing multiple boolean fields > (shared flag and message position tracking) with a single lock_action > selector (acquire/release/none), as the GPI driver only needs to know > whether to emit lock/unlock TREs for a given transfer. > > Signed-off-by: Mukesh Kumar Savaliya > --- Acked-by: Konrad Dybcio Konrad