From patchwork Fri Sep 8 06:53:38 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: 13377185 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 34D92EE57D5 for ; Fri, 8 Sep 2023 06:54:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242424AbjIHGyg (ORCPT ); Fri, 8 Sep 2023 02:54:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242442AbjIHGyc (ORCPT ); Fri, 8 Sep 2023 02:54:32 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 104691FDF; Thu, 7 Sep 2023 23:54:22 -0700 (PDT) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3885Tbdt007733; Fri, 8 Sep 2023 06:54:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : date : subject : mime-version : content-type : content-transfer-encoding : message-id : references : in-reply-to : to : cc; s=qcppdkim1; bh=xbPGXFjhk3rQpoGLqXnqN54My/xDiWdIVQN0PE1OG6s=; b=nObuKNjCR0mlCsMCZJ+dY4DGu6UQOVbhb8UPIKqoyPxahi9WmjjKCza/wKcHxb6W2fel EXAOYmuNKQ0bHbY8UA+qCx5ck+HRNgffgTuh8ow55OnyyRAZ+PaKm8Ff7lzwzzzjP/9I RrunlqK3oeeUrUkoOjqY0czJfEU2OjHh0HAgByOI+XJaMUyUuewUjCRRYaBI4GOt9NRT sMbvNvquv/Kkta8msBZ0FJ4zWhQnjYrUUc4Ry10CSuNtYQbvIR4VYw+N21K2c6xXKKmt yjBYWIBEfKgXJC7M/kVereseWxk8VKDbvYfm5n2jQK9R8CKUo3Tx0igqh4DfRbLHAh/u gw== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3syf5c1ygc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 08 Sep 2023 06:54:13 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3886sCcQ015257 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 8 Sep 2023 06:54:12 GMT Received: from hu-krichai-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.36; Thu, 7 Sep 2023 23:54:08 -0700 From: Krishna chaitanya chundru Date: Fri, 8 Sep 2023 12:23:38 +0530 Subject: [PATCH v6 4/4] PCI: epf-mhi: Add support for handling D-state notify from EPC MIME-Version: 1.0 Message-ID: <20230908-dstate_change-v6-4-b414a6edd765@quicinc.com> References: <20230908-dstate_change-v6-0-b414a6edd765@quicinc.com> In-Reply-To: <20230908-dstate_change-v6-0-b414a6edd765@quicinc.com> To: Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Manivannan Sadhasivam , Kishon Vijay Abraham I , Bjorn Helgaas , Jonathan Corbet , Rob Herring CC: , , , , , Krishna chaitanya chundru X-Mailer: b4 0.13-dev-83828 X-Developer-Signature: v=1; a=ed25519-sha256; t=1694156032; l=1755; i=quic_krichai@quicinc.com; s=20230907; h=from:subject:message-id; bh=vF/dQCu3TPF1bViARZ8lDBrNRejc29BwCNshPXeJqbg=; b=CfyLczHQOj9gA4+LDiEHuovleozRyYYl3Bj/1Z2z8PLGXS+8pl/cTnSnsz8JNRLCLi9DztnP/ S5SJklpzlk4BFXLqeeEm8++BySsMPGlp2D7sMs3NuY5Oj0BRnLGCjLg X-Developer-Key: i=quic_krichai@quicinc.com; a=ed25519; pk=10CL2pdAKFyzyOHbfSWHCD0X0my7CXxj8gJScmn1FAg= X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: VwRbAi8vdbHXtvqrYeXxho8-t81XDIZV X-Proofpoint-ORIG-GUID: VwRbAi8vdbHXtvqrYeXxho8-t81XDIZV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-08_03,2023-09-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 spamscore=0 lowpriorityscore=0 phishscore=0 malwarescore=0 suspectscore=0 impostorscore=0 bulkscore=0 mlxlogscore=857 mlxscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309080062 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 b7b9d3e21f97..7bd15cca686c 100644 --- a/drivers/pci/endpoint/functions/pci-epf-mhi.c +++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c @@ -592,6 +592,16 @@ 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); @@ -649,6 +659,7 @@ 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 f198a8ac7ee7..c3a068592d21 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;