From patchwork Wed Aug 2 03:51:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Chaitanya Chundru X-Patchwork-Id: 13337604 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 27AE0C001DF for ; Wed, 2 Aug 2023 03:52:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232190AbjHBDwT (ORCPT ); Tue, 1 Aug 2023 23:52:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38276 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232182AbjHBDwC (ORCPT ); Tue, 1 Aug 2023 23:52:02 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D5EBA30C8; Tue, 1 Aug 2023 20:51:45 -0700 (PDT) Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3722NIGu028791; Wed, 2 Aug 2023 03:51:32 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=qcppdkim1; bh=iv9VMeggZweWL3QOIkADDj2WzrjlhjhC5j1kulPSJ7c=; b=KO3b3yWU9Yeiv/hmJGVWpLLB8uLD+mEBgj+fPeDktexvcG3HKxJzjfLvJeZsc3+Zbjqn N8KG0dNYg7w/fqGUje064kAqIj3jeylY7AafHWUFaGIzQj1bbKvnDMsfGC3ReipPbvN9 Oa0ti8LjtuJKStoEIkpQCSvytinlVladvPR5vlZE17p85OcIZ7Ud/tla+Rfcg+zWoIIf 0sQaK8sIBBf7DjgvUca6NjFCuicieY2ApaIe1H0YDkDfge+ypiiEqBtP+Ir0mBjr82kL RQykojQAZJ7qF0pAqZYgKlFWpi2ao+rRANjZ06BLZB/D4ersTNk/z+PbDVLBsu6lgwir dw== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3s6rhatudq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 02 Aug 2023 03:51:32 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 3723pS43022512; Wed, 2 Aug 2023 03:51:28 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3s4uukryxw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 02 Aug 2023 03:51:28 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3723pSSJ022504; Wed, 2 Aug 2023 03:51:28 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-krichai-hyd.qualcomm.com [10.213.110.112]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3723pR5Q022503; Wed, 02 Aug 2023 03:51:28 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 4058933) id 5B7344B59; Wed, 2 Aug 2023 09:21:27 +0530 (+0530) From: Krishna chaitanya chundru To: manivannan.sadhasivam@linaro.org Cc: helgaas@kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_vbadigan@quicinc.com, quic_nitegupt@quicinc.com, quic_skananth@quicinc.com, quic_ramkri@quicinc.com, quic_parass@quicinc.com, krzysztof.kozlowski@linaro.org, Krishna chaitanya chundru , Manivannan Sadhasivam , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Kishon Vijay Abraham I , Bjorn Helgaas , Jeffrey Hugo , mhi@lists.linux.dev (open list:MHI BUS) Subject: [PATCH v5 4/4] PCI: epf-mhi: Add support for handling D-state notify from EPC Date: Wed, 2 Aug 2023 09:21:21 +0530 Message-Id: <1690948281-2143-5-git-send-email-quic_krichai@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1690948281-2143-1-git-send-email-quic_krichai@quicinc.com> References: <1690948281-2143-1-git-send-email-quic_krichai@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: BstDsv_bIAOsUCh53GyUGQ2obw2nsynp X-Proofpoint-ORIG-GUID: BstDsv_bIAOsUCh53GyUGQ2obw2nsynp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-08-02_01,2023-08-01_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 priorityscore=1501 adultscore=0 clxscore=1015 impostorscore=0 spamscore=0 bulkscore=0 phishscore=0 mlxlogscore=776 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2308020033 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add support for handling D-state notify for MHI EPF. Signed-off-by: Krishna chaitanya chundru --- drivers/pci/endpoint/functions/pci-epf-mhi.c | 11 +++++++++++ include/linux/mhi_ep.h | 3 +++ 2 files changed, 14 insertions(+) diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c index 9c1f5a1..ee91bfc 100644 --- a/drivers/pci/endpoint/functions/pci-epf-mhi.c +++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c @@ -339,6 +339,16 @@ static int pci_epf_mhi_bme(struct pci_epf *epf) return 0; } +static int pci_epf_mhi_dstate_notify(struct pci_epf *epf, pci_power_t state) +{ + struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf); + struct mhi_ep_cntrl *mhi_cntrl = &epf_mhi->mhi_cntrl; + + mhi_cntrl->dstate = state; + + return 0; +} + static int pci_epf_mhi_bind(struct pci_epf *epf) { struct pci_epf_mhi *epf_mhi = epf_get_drvdata(epf); @@ -394,6 +404,7 @@ static struct pci_epc_event_ops pci_epf_mhi_event_ops = { .link_up = pci_epf_mhi_link_up, .link_down = pci_epf_mhi_link_down, .bme = pci_epf_mhi_bme, + .dstate_notify = pci_epf_mhi_dstate_notify, }; static int pci_epf_mhi_probe(struct pci_epf *epf, diff --git a/include/linux/mhi_ep.h b/include/linux/mhi_ep.h index f198a8a..c3a0685 100644 --- a/include/linux/mhi_ep.h +++ b/include/linux/mhi_ep.h @@ -8,6 +8,7 @@ #include #include +#include #define MHI_EP_DEFAULT_MTU 0x8000 @@ -139,6 +140,8 @@ struct mhi_ep_cntrl { enum mhi_state mhi_state; + pci_power_t dstate; + u32 max_chan; u32 mru; u32 event_rings;