From patchwork Thu Jul 29 01:12:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fenglin Wu X-Patchwork-Id: 12407311 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F7ACC4338F for ; Thu, 29 Jul 2021 01:13:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 85FB161057 for ; Thu, 29 Jul 2021 01:13:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233306AbhG2BN4 (ORCPT ); Wed, 28 Jul 2021 21:13:56 -0400 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]:64145 "EHLO alexa-out-sd-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233286AbhG2BNz (ORCPT ); Wed, 28 Jul 2021 21:13:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1627521233; x=1659057233; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=n/S+LJRQQv3dedKcJxXMUgsmPE3AiNWUiTT/M7t323w=; b=LhtKyH6814YJscKov8wTFrcK7wPBr1wypnDVUMqdeMEQLwx+ZS4V8guN q9Gknwk119ot3nTs/AuAuNJSN6fCrqV47XiAjlo/9cJEGPIRleyuPjeEC SPtMYuJhWLNW9haFC3JdhoVHAFSv9tEMR0QxuHjesx3HXdOKYNg+S8vXK U=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-01.qualcomm.com with ESMTP; 28 Jul 2021 18:13:53 -0700 X-QCInternal: smtphost Received: from nasanexm03e.na.qualcomm.com ([10.85.0.48]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/AES256-SHA; 28 Jul 2021 18:13:53 -0700 Received: from fenglinw-gv.qualcomm.com (10.80.80.8) by nasanexm03e.na.qualcomm.com (10.85.0.48) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Wed, 28 Jul 2021 18:13:51 -0700 From: Fenglin Wu To: , , CC: , , Subject: [PATCH V1 5/9] spmi: pmic-arb: correct duplicate APID to PPID mapping logic Date: Thu, 29 Jul 2021 09:12:43 +0800 Message-ID: <1627521167-18848-6-git-send-email-quic_fenglinw@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1627521167-18848-1-git-send-email-quic_fenglinw@quicinc.com> References: <1627521167-18848-1-git-send-email-quic_fenglinw@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanexm03e.na.qualcomm.com (10.85.0.48) 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. 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 59c445b..f1b72d8 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -918,7 +918,8 @@ 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); @@ -941,16 +942,16 @@ 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;