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 1060344C67C 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=1784118156; cv=none; b=Gr3zdZyOZb3rx5pTB8v3n7uqZxaXDFPtP4VErpfQiJdF2ZDjr++2HJln8JRXfK7k7juX+W9r2tb8G4lxBl2FpuznFLn4fhNlYJUmbyYNYsDkQQhkqc6Ke35oc8nh+moWBP1TmYXOJX8yNW7bfEs0TAtYQzsLcRxI8lHT7tDPyH4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784118156; c=relaxed/simple; bh=PZa+it5ln/dZYcDQVhHQXLPvxKtKTwctIopAUS1NAD4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=kOs3p2+caBhPAwlwU7zU8HM7o1LgHNmcnlQ4NCNd2MwVSdU8oMkpnq4P5+RfujNJQ7CXV70lSmd37HX2h38vlgWXzBalAej+IbGV1oTBLrX6qPoauikBuw7dGz2JtAYDvFvAnpk3GjkSXsz+QLRD7JeZQvHTL3e4fmq1DxZqVZA= 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 (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 66FBcr0u523553 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-f200.google.com (mail-qk1-f200.google.com [209.85.222.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4fe68ws1hs-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-f200.google.com with SMTP id af79cd13be357-92e6415f279so78107185a.2 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=qcNh++iuuwipWSMj24UdeZyFSjX2u1RVCioqSc7i5sVaMyiGLyd/IBXI44R+0WVQAH qEJvaPYXfiY1f1s9AnQBk0hvhALXrrOsWth6byh//FihdLscMThk/pi/4Bo9Gi+0vQgw koW4SIPIA3DXeTT/YM6X87lamgq49cKDydcFgiV86l2CeU9doQGWObEjEealaxFRtTkT NPJ/Jul6UdidKXzgMQfvtcdFu3DcR7E2WHNg13OTl77if99LsPTXBoteHROiflnBi2GI 4C1nn46Z/DW+YfJ10SJwu45nxBHt3UxRFyPqxbKzZQyu8vUF1oSGpWTZsk3pwdfgm/4y 5kow== X-Forwarded-Encrypted: i=1; AHgh+Rq+U9XyQAu0Wr78ZoaCGDOHuBG+KCPiYKxoDmebuUosuI26Nh3cAYInsXsZ/1vdwLqJbMaEIJTO3PVm@vger.kernel.org X-Gm-Message-State: AOJu0YwGknSLi8P6GBSk+dypUUtDjuShXkhsOLY7cmJK3BDwEBTw7sHM abqTvckhCpbtcIMBCfTTMzlxAF8AhEQ8O7vg/3AsGd+JA08kgty1270f81Btzn1IDqYWfzpS2KT JnY7+z9J8WfHtRSrpN1Lw7mchUl5DkDybTSt8mEhg8MfELv2uyjRmwowAemj89LeD X-Gm-Gg: AfdE7ckhJkK2aG5GxYROJ5T15YsMC7IRubwNuC44goIXzjOLrxcYfjQZNQ8Tv47mMnK svF5aksgqNNaJF8n29LSOYSH5vD8GTBnZSXBM/gPtzzzSPmliL1Kw8y6eWqGtErNoSwnmD4na12 /ZLTd5dceC9mpLUFHz7aUDAofRKdXTxIx543DJDgpPOLJgUHUOyDWOnv5KYIG0pD3ebsTY+HfbY gCdKfOQcyxVZ3ht9kKhM5gROewuJ50IlODIvM+r87E3NZS/pcgZcbctjnMQpv3qkGZDUibZOd2u nVuQEFZ+hDLf2K+fgJ8XfP9AY9v2Y/i1RiGivbC7AEQo+XEEVr2yH3IZBVmysiHoLSdI3qJ9rcz pFeuSD5RAernsH6PJLolXt/zJATCtqCZ8z0E= X-Received: by 2002:a05:620a:458a:b0:92e:46cd:7299 with SMTP id af79cd13be357-92ef2c7f24fmr1309036285a.8.1784118152918; 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: devicetree@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-ORIG-GUID: docbtCNPbSHsl3qF6_lpeDBQc1mx7Nhq X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE1MDEyMiBTYWx0ZWRfXwrIJ/OoRAzaZ +sEj2r6oLHrz+Y9pvu1SsxmVQu+QYPCBU4HRmV8L3eMubb8Yeiyxnb6P7L5Q2hgevTJTQsnHw7W 0ihspT9qB69xRb7l/1ziR9FPWsMJdhVBGA4fgVhSFGjiFRr0iv0Sg0TiI9oVDuZQDQ0Xils3Hvq l0eShhe4f6QCnzLI9HzP+UcJClHyr/ReSrPLqG5Qe1KV/wXUckMDoah4jvsIBAPRHIMrErFU9vB QHfS/N1DYk6WVss/4Gh8eREI0tPYxYl6iy187XzXiu/0lz9TZydUDL2tCvck7++6DIWyX1tIG2m P0eCbOO3FdQbN2Z6Yy66Sg1Xw/ySJdbHUVg9Xb6XUlwuvTPeEiBVUYlu7aQ/xDckvs5bsgLqa2h EDDpb1jGs9G7R37nUWzRrZDuYQx79zfSLgJjXL2cuK3NYvkGrYtaSqVHOG1LO3UV6H5dLoHrmdK ZLqsAvUPQ8sLKWIzkxA== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE1MDEyMiBTYWx0ZWRfX++/+n+V+HEvP PSfWiPXWCBM7fuRdnR3iJQ93eTM+mg3u5HuO/x85ZzzTuYa57oA0Upk0Gpo9+tBBjiF0Js/Peg7 hIQxjMWFXUNIOcSIPatxhOJiKM0E6Lw= X-Authority-Analysis: v=2.4 cv=LbgMLDfi c=1 sm=1 tr=0 ts=6a577b8a cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=s1zqTiH2bahLR0COYxoA:9 a=QEXdDO2ut3YA:10 a=zgiPjhLxNE0A:10 a=ZXulRonScM0A:10 a=zZCYzV9kfG8A:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-GUID: docbtCNPbSHsl3qF6_lpeDBQc1mx7Nhq 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 spamscore=0 impostorscore=0 suspectscore=0 adultscore=0 clxscore=1015 phishscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 bulkscore=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