From patchwork Wed Jun 5 21:22:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eddie James X-Patchwork-Id: 802155 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (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 9D26A160781; Wed, 5 Jun 2024 21:23:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717622620; cv=none; b=gWRSCOZF97eJdfnQAwrCaKRlqX3UlHPWk5rfOpY++vatMLWWO9UdPSlYmCc2xlPTh49qoomG6wFy48lXfJ0r5OdZ7YOlRLkXOOGR9AStiY1XpXKjTqF3L1E/+pBHFVUO1p21t/4jY0U3aw4Pwuz3EOtxBNSvX7Y8Y5CuqkjZqms= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717622620; c=relaxed/simple; bh=Kk1vf7vDZQFiMZVz0TxazBsIlWzRpEvr/ZTsMqk20vw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=XiTI67HiupdFB40QkMDEKbcVci6auC4F8l1EIqzC7JCHHlJzJiK7eODR96oAfU2J/zPmrjCTBPuEhPp+kVVGjBLSHfrFZqqFNWGJsUsEu0LJtTjxhk8tzQ/a5adRsIHj6A/A9C7meXBmxwDSIoM8V+A9T2l+xuxoXAX6GbKdCaI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=qXx91+W4; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="qXx91+W4" Received: from pps.filterd (m0353723.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 455LBnB6014237; Wed, 5 Jun 2024 21:23:21 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc : content-transfer-encoding : date : from : in-reply-to : message-id : mime-version : references : subject : to; s=pp1; bh=EXGcZynFVVUbk26l2/hfQQpZCKfn9AC1kWN4XMBRoBg=; b=qXx91+W4/Ke0dRAquRVBMsPjy8RP6asSGCQxjt2Mk98xRpKP5IfTnVdQ+o6uncMYdaov nIebfy5qd3bI6KyDnYMRbWMXuDs6VVxQGyxJpxEgX+fn+SjRWobP03zvGYX4JrVZcOYt 13J1uiBymonSNFB/q7KoorkjPjOAp30iLPrZiSdcX0DCUF8MdNDPcrXZE8ML4evkmQkd 0HSWuP3PxzPhqk154MkaeDk6ZvLnUpJ/0cE49fdZrSK9MpDZfHVBXb9x6EYaVWcWr1zD LzYEFa/Y2MRYk+3G0uDlciuI3Xi9P17TmxDQCdGjocTcXNeL4hmKwlI1IJvmLH4N10ZP Xw== Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3yjy57r2y2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 Jun 2024 21:23:20 +0000 Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 455I6vQ6000795; Wed, 5 Jun 2024 21:23:20 GMT Received: from smtprelay06.dal12v.mail.ibm.com ([172.16.1.8]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 3ygdyu6wrs-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 Jun 2024 21:23:20 +0000 Received: from smtpav06.dal12v.mail.ibm.com (smtpav06.dal12v.mail.ibm.com [10.241.53.105]) by smtprelay06.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 455LNHPN61079970 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 5 Jun 2024 21:23:19 GMT Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 49DBA58060; Wed, 5 Jun 2024 21:23:17 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0DBC55805F; Wed, 5 Jun 2024 21:23:17 +0000 (GMT) Received: from slate16.aus.stglabs.ibm.com (unknown [9.61.121.242]) by smtpav06.dal12v.mail.ibm.com (Postfix) with ESMTP; Wed, 5 Jun 2024 21:23:17 +0000 (GMT) From: Eddie James To: linux-fsi@lists.ozlabs.org Cc: eajames@linux.ibm.com, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, broonie@kernel.org, andi.shyti@kernel.org, joel@jms.id.au, alistair@popple.id.au, jk@ozlabs.org, andrew@codeconstruct.com.au, linux-aspeed@lists.ozlabs.org, ninad@linux.ibm.com, lakshmiy@us.ibm.com Subject: [PATCH v4 13/40] fsi: core: Disable relative addressing during scan Date: Wed, 5 Jun 2024 16:22:45 -0500 Message-Id: <20240605212312.349188-14-eajames@linux.ibm.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240605212312.349188-1-eajames@linux.ibm.com> References: <20240605212312.349188-1-eajames@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 6oMHMTQCwYpeabzPdTHqOe14r_iQpm8r X-Proofpoint-ORIG-GUID: 6oMHMTQCwYpeabzPdTHqOe14r_iQpm8r X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-05_02,2024-06-05_02,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=813 impostorscore=0 suspectscore=0 spamscore=0 adultscore=0 malwarescore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2405010000 definitions=main-2406050160 Relative addressing is not allowed during slave ID initialization, so turn it off during the FSI scan procedure. Signed-off-by: Eddie James --- drivers/fsi/fsi-core.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index bfb147de90efc..8b402149acbe9 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -1223,8 +1223,20 @@ static int fsi_master_break(struct fsi_master *master, int link) static int fsi_master_scan(struct fsi_master *master) { + bool set_mmode = false; int link, rc; + /* relative addressing is not allowed during slave ID initialization */ + if (master->map && (master->flags & FSI_MASTER_FLAG_RELA)) { + u32 mmode = master->mmode & ~FSI_MMODE_RELA; + + rc = regmap_write(master->map, FSI_MMODE, mmode); + if (rc) + return rc; + + set_mmode = true; + } + trace_fsi_master_scan(master, true); for (link = 0; link < master->n_links; link++) { rc = _fsi_master_link_enable(master, link); @@ -1246,6 +1258,12 @@ static int fsi_master_scan(struct fsi_master *master) fsi_master_link_disable(master, link); } + if (set_mmode) { + rc = regmap_write(master->map, FSI_MMODE, master->mmode); + if (rc) + return rc; + } + return 0; }