From patchwork Tue Dec 21 07:20:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fenglin Wu X-Patchwork-Id: 12692039 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39C38C433EF for ; Tue, 21 Dec 2021 07:21:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235128AbhLUHVP (ORCPT ); Tue, 21 Dec 2021 02:21:15 -0500 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]:16980 "EHLO alexa-out-sd-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235116AbhLUHVE (ORCPT ); Tue, 21 Dec 2021 02:21:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1640071264; x=1671607264; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=HlBrxxqz8GrpwuEBJfdNjgmehq5A3syFPfEQuqOMWpg=; b=ucGCgG7EPMk1bPkASIJHU9vv8Vy/EuoI348RYxPFrRZPjcr3Xl6oqxhp trTLdRGxIrwBA6iOdl9OL1cC7OiVAL/akc2C4/jbb6+2MJk61qQxKzq1w upA8WkyrN0JVVLSoo13EnyZ2cRi9wZW6N9bexWbcDC16qhFboCIAnVAHV s=; Received: from unknown (HELO ironmsg05-sd.qualcomm.com) ([10.53.140.145]) by alexa-out-sd-01.qualcomm.com with ESMTP; 20 Dec 2021 23:21:04 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg05-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Dec 2021 23:21:04 -0800 Received: from nalasex01c.na.qualcomm.com (10.47.97.35) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Mon, 20 Dec 2021 23:21:03 -0800 Received: from fenglinw-gv.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Mon, 20 Dec 2021 23:21:01 -0800 From: Fenglin Wu To: , , , Greg Kroah-Hartman , "Kiran Gunda" , David Collins CC: , , , Subject: [PATCH v4 06/11] spmi: pmic-arb: correct duplicate APID to PPID mapping logic Date: Tue, 21 Dec 2021 15:20:04 +0800 Message-ID: <1640071211-31462-7-git-send-email-quic_fenglinw@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1640071211-31462-1-git-send-email-quic_fenglinw@quicinc.com> References: <1640071211-31462-1-git-send-email-quic_fenglinw@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01c.na.qualcomm.com (10.47.97.35) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: David Collins Correct the way that duplicate PPID mappings are handled for PMIC arbiter v5. The final APID mapped to a given PPID should be the one which has write owner = APPS EE, if it exists, or if not that, then the first APID mapped to the PPID, if it exists. Fixes: 40f318f0ed67 ("spmi: pmic-arb: add support for HW version 5") Signed-off-by: David Collins Signed-off-by: Fenglin Wu --- drivers/spmi/spmi-pmic-arb.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index 56f2294..cf92abc 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -1031,7 +1031,8 @@ static int pmic_arb_read_apid_map_v5(struct spmi_pmic_arb *pmic_arb) * version 5, there is more than one APID mapped to each PPID. * The owner field for each of these mappings specifies the EE which is * allowed to write to the APID. The owner of the last (highest) APID - * for a given PPID will receive interrupts from the PPID. + * which has the IRQ owner bit set for a given PPID will receive + * interrupts from the PPID. */ for (i = 0; ; i++, apidd++) { offset = pmic_arb->ver_ops->apid_map_offset(i); @@ -1054,16 +1055,16 @@ static int pmic_arb_read_apid_map_v5(struct spmi_pmic_arb *pmic_arb) apid = pmic_arb->ppid_to_apid[ppid] & ~PMIC_ARB_APID_VALID; prev_apidd = &pmic_arb->apid_data[apid]; - if (valid && is_irq_ee && - prev_apidd->write_ee == pmic_arb->ee) { + if (!valid || apidd->write_ee == pmic_arb->ee) { + /* First PPID mapping or one for this EE */ + pmic_arb->ppid_to_apid[ppid] = i | PMIC_ARB_APID_VALID; + } else if (valid && is_irq_ee && + prev_apidd->write_ee == pmic_arb->ee) { /* * Duplicate PPID mapping after the one for this EE; * override the irq owner */ prev_apidd->irq_ee = apidd->irq_ee; - } else if (!valid || is_irq_ee) { - /* First PPID mapping or duplicate for another EE */ - pmic_arb->ppid_to_apid[ppid] = i | PMIC_ARB_APID_VALID; } apidd->ppid = ppid;