From patchwork Tue Aug 8 18:25:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksii Moisieiev X-Patchwork-Id: 13346734 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 856F3C001DB for ; Tue, 8 Aug 2023 18:26:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:References: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4u5vMKXlghlCnwPyz8AzN/HeMWVsDYg6+Nbp4VmhZgQ=; b=Z314zTbOrBP5CG iol1QkePZkLyZsXF6tOoerL5xN+q27OXmRWYx0ge/f4O4agNl8iL0tKLVkXeaU8NIzVqZFcVdjRgw GHHoBO/4BvigWLkfqtwfP4RKXCSe9GWt4KUw4KgFHlWW20eLX/w5P/f3aibcN//24FCBIMCFZxSe8 p8FANGGDXObUcQ1VKIjf1zx2Fd9vOVKRWAzNwL3DFSa+YyjmoQ9KmoA/t1ReyLcztV1FnSQuhSxfA 8rttzZ7e9BFW35EVschk4B3COMiBuieyVV7A58Yt0KmIKr57fw5i5oz2CyLmYOQ41ClaVHZczhdUD 7vPSHh8GYQmKT9XDzSqA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qTRP7-003DlR-30; Tue, 08 Aug 2023 18:26:01 +0000 Received: from mx0b-0039f301.pphosted.com ([148.163.137.242]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qTRP1-003Djr-2c for linux-arm-kernel@lists.infradead.org; Tue, 08 Aug 2023 18:25:58 +0000 Received: from pps.filterd (m0174683.ppops.net [127.0.0.1]) by mx0b-0039f301.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 378E6eP1003021; Tue, 8 Aug 2023 18:25:42 GMT Received: from eur01-ve1-obe.outbound.protection.outlook.com (mail-ve1eur01lp2057.outbound.protection.outlook.com [104.47.1.57]) by mx0b-0039f301.pphosted.com (PPS) with ESMTPS id 3sbpek1ayb-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 08 Aug 2023 18:25:42 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=HZ/A8DkHLhLsj4zfidkLOvfLRvWVP6CTJusFF0znqlFJzOHdRNQOtGhXcTLKz2fRyMcFfX4dkN0YIaVbo7FmE6mH/mPOQ0ZKj/nbvwxR9fct7FEXTJPWWDRv7HcMa6wPkFYbSzEJ5mdt0WlxosX5+j7hWZd9Wey0jOb/iRYoU/C7+aujNp/W10manXWZ83wyjP8HYuXfGlc37MPABj0D6aiQ53npxpqfXVhUHDIpNdPBh9BUiL0mYIP60JHAJY+x+db6ZX7edo2p2aFjPcBLtTS+PoTbn5ics0dxNdBQvh6br178T3BCiR+ivCngZvhSjTIuHfzHzK6BEc27vCAWFg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=+F1XrR7yfWjYQqJzvPiM3QMAnesCkkVwTqGks+SvCM8=; b=eEP+qnpfE/Tjnhz+NpUPb+gxhCaaJ7RSHZBjCzoXoeW4J18NAUO5kVwCaeIn8tA8RyH/TmKWm95QHrzoeEUwlHPw8uBKramMzQwo3PLg242yk8ftPBN8i/h++GpaVFF9V6y58djt/o3suYSBDoEunwI0qoPMqvZjVy0e8odlsAHz0UFtKA8gqOLneKH6+XPiTfVkSjNDdmFqO0XNeAiW6WMyFwZy38RiUrWtyna6zT7/SjjUQUz1UeXG5rBri1lw8tT2JIFen5Ypl/EWykPmQ1KAmKx19SL6XhW8MqTzXm1WKrQWxmpVcjAxKRNR1K07P9TpmLZUtAK19rQq0YkLxw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=epam.com; dmarc=pass action=none header.from=epam.com; dkim=pass header.d=epam.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=epam.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=+F1XrR7yfWjYQqJzvPiM3QMAnesCkkVwTqGks+SvCM8=; b=H8SEX41K55i5tAh7T1FjxHwHozz5sMsDExStHTmdP6fJxhy571qBwuF0DQ1dEcpRbZ9SlUC1siJnZph1lHcoPqftnZcGCb+6TIpQ2aeQGUqWEqV/kY/d2MkI8CDJCm0veOqon20gUGozMtk5lbpRDlVZxF/2XruBc8vfWQdT5EzJOdtRbuW6EABhQjp6lhE7A3shmDxRcwTIjZVll6SdLsMFi/UZLLCxmMorUdfwVRiY9rmlozBPmjpCfvKAo9bivuFH4PHYI8QxQ9vwUkETVdyS2qtFsNIUJsTkPlyQ4viQgpd0ECA/PrI/EM2c5/Av/guSHVSautbsrtu3Osv/sg== Received: from PA4PR03MB7136.eurprd03.prod.outlook.com (2603:10a6:102:ea::23) by AS4PR03MB8458.eurprd03.prod.outlook.com (2603:10a6:20b:519::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6652.27; Tue, 8 Aug 2023 18:25:35 +0000 Received: from PA4PR03MB7136.eurprd03.prod.outlook.com ([fe80::ccb5:5aee:f10d:ab26]) by PA4PR03MB7136.eurprd03.prod.outlook.com ([fe80::ccb5:5aee:f10d:ab26%4]) with mapi id 15.20.6652.026; Tue, 8 Aug 2023 18:25:35 +0000 From: Oleksii Moisieiev To: "sudeep.holla@arm.com" CC: Oleksii Moisieiev , Cristian Marussi , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Linus Walleij , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-gpio@vger.kernel.org" Subject: [PATCH v4 2/4] firmware: arm_scmi: Add SCMI v3.2 pincontrol protocol basic support Thread-Topic: [PATCH v4 2/4] firmware: arm_scmi: Add SCMI v3.2 pincontrol protocol basic support Thread-Index: AQHZyiW5O6qQsCkaZE+uwCtArOPMQA== Date: Tue, 8 Aug 2023 18:25:35 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-publictraffictype: Email x-ms-traffictypediagnostic: PA4PR03MB7136:EE_|AS4PR03MB8458:EE_ x-ms-office365-filtering-correlation-id: 5bf622e4-f164-4afb-6f2a-08db983cdbd7 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PA4PR03MB7136.eurprd03.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(4636009)(39860400002)(396003)(376002)(366004)(346002)(136003)(451199021)(1800799003)(186006)(7416002)(38070700005)(8936002)(8676002)(5660300002)(64756008)(4326008)(6916009)(41300700001)(316002)(83380400001)(86362001)(30864003)(2906002)(6512007)(6486002)(71200400001)(2616005)(6506007)(26005)(36756003)(76116006)(66476007)(91956017)(66556008)(66946007)(66446008)(478600001)(122000001)(54906003)(38100700002)(579004)(559001);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?iso-8859-1?q?lAMovaUBhncou3zTuQe8GQy?= =?iso-8859-1?q?1oZYerSCN7VoSN60JK2uEK0yLbAhTu5I5PJSssDBooBNhAaGfaPIuRZ9MXSw?= =?iso-8859-1?q?I8L31SjRHCVH1LeuDMCNyyQS8sNmJ3nR3R+SF1aQY07pluIeVXc0IzF88fUo?= =?iso-8859-1?q?uANn2mWQbIe93+1asFcyqnt/+vz8jD1vAVqLs48FbJ1rSC11iiTa4KD/TSSx?= =?iso-8859-1?q?u7HwrSUlv5fCiN8VqH4ejerrtu7AdNdKr/KLIEGgsbo6x8B8wVH13zQDtund?= =?iso-8859-1?q?x9kOqbjctNAT0vaP8j95b9TtSyxnCbZUyj4YiNrcVIOqpg050+D9+9xf9APf?= =?iso-8859-1?q?G8nkwPcwt9cBQ+1g9BjenLpRwfhASqBId4B5VBBKTzIxvSGWXEY4eA5mnAmz?= =?iso-8859-1?q?Knm7koPWaTrmobOhO97NDKcEVGEYhHSRrjt67MSl+8PGIiFw1tp7GvQd1aYH?= =?iso-8859-1?q?ufdX/FhHMqufrxpRF49UQigoLqrPadlyAkzyJr6PANZRXAJMSZhO1wUyjUBv?= =?iso-8859-1?q?95U81GSoOpNo7WwNF5ILxPbe+sjzEvFg/yJsRgUQSCSQy4+V3jOWO1AI9vdi?= =?iso-8859-1?q?u81mwkVlXHJzWsnTm/GfFP3hKqNeKBE7JOEqoB7hP/ujpLoyAYyyNyBvZqC6?= =?iso-8859-1?q?cdw29/Hu1OpWCXbT9dw5IxB4p3bMk0fKTYIlFDgQNJFq1GcTuaFQfga84+s2?= =?iso-8859-1?q?hoiKaBGXpxmMZ2+j7CYbOk5zML6Fy/8FC6VHiMb7eZak0VfVgMVSbWvgyawL?= =?iso-8859-1?q?E+bnDGFVz9P2cBdVB2/Jamajwjt/znuxvHDqr9uZpfFoOdbp0u07Mqifm5uO?= =?iso-8859-1?q?v61zl7/zZ8ls1w4zdNUrcQWk9rxT5w0qMJpFzvM+lKLDBouYtxZ2kyGXWJA9?= =?iso-8859-1?q?tuQljvv2XHHoudvulgu4W8ZAkVNpo2RSgDrlC83D9Iu2c8wvKeDG3u0x0+/N?= =?iso-8859-1?q?mtwpfhHXDhdjqc5AYFAIEWCgORN0+pM+/pu+OL5qlwAs6KRhUSpEIUmqz2L2?= =?iso-8859-1?q?KyGDaQ/6Lrik5MYLSgcveg2M8COtjRLvGtMFbnhzejfJTz4icxIkEDFGQOUQ?= =?iso-8859-1?q?u8fFvN+OTkHi7tV35hG/kvW0W6LExV4+6TH/AWmbLEddqf02hZqFEunsXzo0?= =?iso-8859-1?q?ro4qZ8S+uYL0pfNa020NnOo0tlNBo47DU2yA7sH4U/WbXcX3txvCTiBcJPIB?= =?iso-8859-1?q?AKbhWgYNVrA7iJKEN2sa2bQN61UYP4l/p1MfmlgAjKF9KxgtpOof+jAmiIer?= =?iso-8859-1?q?JgbRHKQowZ51k6jOfL9NrJrklZ6WvkaFHlkl/okm4/hUc3FtmKdB7Q85h0D8?= =?iso-8859-1?q?RrcWHSTecwD3MA9tjpe+8LO+crpSeMWQnri0DzuI1YzwXyVehf6GAYivTivU?= =?iso-8859-1?q?58z4LLqFKlYKKgi1C1/u4BmqiDpDRM8vdhEFVmg0DMQ6RBv3U8m8visowev3?= =?iso-8859-1?q?gwkelXo/Ke32NjS1MWQHwuoSkC4irv+HZD4IM/ChVZU8Bp6w2q63qSaCjS7T?= =?iso-8859-1?q?EbNB1I+FlL1zXH2R4yw9eKjLK85utRJzEc8dIOaseuovcW3kxKe3wHsBS3Ah?= =?iso-8859-1?q?4JkEYG7yYLDkISPxReK505ETZFkhsFTXwUX7/MLCLELbqXgTt4nTWjmn1HD7?= =?iso-8859-1?q?ZB+qFiGO6O20ca5UgylmaRX2GeDwFZV4U+sNXvA=3D=3D?= MIME-Version: 1.0 X-OriginatorOrg: epam.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: PA4PR03MB7136.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5bf622e4-f164-4afb-6f2a-08db983cdbd7 X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Aug 2023 18:25:35.5985 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b41b72d0-4e9f-4c26-8a69-f949f367c91d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 9SPR42z2ttg1pK//2fPb1+VYQ+geqqmGjC5p1vKIvtlymrpGgLejrq2xbN59zV9+Y06u7/UidiOVX5ptWV3QQHSY6OXoVyfrVX9xNK8xiIc= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS4PR03MB8458 X-Proofpoint-ORIG-GUID: 8kBzIMb5DoGLP60te3lY3IIa_HP45srk X-Proofpoint-GUID: 8kBzIMb5DoGLP60te3lY3IIa_HP45srk X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-08-08_15,2023-08-08_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 lowpriorityscore=0 phishscore=0 mlxlogscore=999 impostorscore=0 mlxscore=0 malwarescore=0 suspectscore=0 clxscore=1015 priorityscore=1501 adultscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2308080163 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230808_112555_999730_A132BBD4 X-CRM114-Status: GOOD ( 19.99 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add basic implementation of the SCMI v3.2 pincontrol protocol. Signed-off-by: Oleksii Moisieiev --- Changes v3 -> v4 - Fixed MAINTAINERS file description - adjusted pinctrl ops position and callback names - add trailing coma in scmi_protocol list - removed unneeded pi checks - corrected selector check - resource allocation refactoring - scmi_*_info swap params to generate better code - style, add trailing coma in definitions --- MAINTAINERS | 6 + drivers/firmware/arm_scmi/Makefile | 2 +- drivers/firmware/arm_scmi/driver.c | 2 + drivers/firmware/arm_scmi/pinctrl.c | 791 ++++++++++++++++++++++++++ drivers/firmware/arm_scmi/protocols.h | 1 + include/linux/scmi_protocol.h | 42 ++ 6 files changed, 843 insertions(+), 1 deletion(-) create mode 100644 drivers/firmware/arm_scmi/pinctrl.c diff --git a/MAINTAINERS b/MAINTAINERS index 0dab9737ec16..2d81d00e5f4f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20522,6 +20522,12 @@ F: include/linux/sc[mp]i_protocol.h F: include/trace/events/scmi.h F: include/uapi/linux/virtio_scmi.h +PINCTRL DRIVER FOR SYSTEM CONTROL MANAGEMENT INTERFACE (SCMI) +M: Oleksii Moisieiev +L: linux-arm-kernel@lists.infradead.org +S: Maintained +F: drivers/firmware/arm_scmi/pinctrl.c + SYSTEM RESET/SHUTDOWN DRIVERS M: Sebastian Reichel L: linux-pm@vger.kernel.org diff --git a/drivers/firmware/arm_scmi/Makefile b/drivers/firmware/arm_scmi/Makefile index b31d78fa66cc..603430ec0bfe 100644 --- a/drivers/firmware/arm_scmi/Makefile +++ b/drivers/firmware/arm_scmi/Makefile @@ -10,7 +10,7 @@ scmi-transport-$(CONFIG_ARM_SCMI_TRANSPORT_SMC) += smc.o scmi-transport-$(CONFIG_ARM_SCMI_HAVE_MSG) += msg.o scmi-transport-$(CONFIG_ARM_SCMI_TRANSPORT_VIRTIO) += virtio.o scmi-transport-$(CONFIG_ARM_SCMI_TRANSPORT_OPTEE) += optee.o -scmi-protocols-y = base.o clock.o perf.o power.o reset.o sensors.o system.o voltage.o powercap.o +scmi-protocols-y = base.o clock.o perf.o power.o reset.o sensors.o system.o voltage.o powercap.o pinctrl.o scmi-module-objs := $(scmi-driver-y) $(scmi-protocols-y) $(scmi-transport-y) obj-$(CONFIG_ARM_SCMI_PROTOCOL) += scmi-core.o diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 729201d8f935..03686bff000e 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -3024,6 +3024,7 @@ static int __init scmi_driver_init(void) scmi_voltage_register(); scmi_system_register(); scmi_powercap_register(); + scmi_pinctrl_register(); return platform_driver_register(&scmi_driver); } @@ -3041,6 +3042,7 @@ static void __exit scmi_driver_exit(void) scmi_voltage_unregister(); scmi_system_unregister(); scmi_powercap_unregister(); + scmi_pinctrl_unregister(); scmi_transports_exit(); diff --git a/drivers/firmware/arm_scmi/pinctrl.c b/drivers/firmware/arm_scmi/pinctrl.c new file mode 100644 index 000000000000..868a2f9821be --- /dev/null +++ b/drivers/firmware/arm_scmi/pinctrl.c @@ -0,0 +1,791 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * System Control and Management Interface (SCMI) Pinctrl Protocol + * + * Copyright (C) 2023 EPAM + */ + +#include +#include +#include + +#include "protocols.h" + +#define REG_TYPE_BITS GENMASK(9, 8) +#define REG_CONFIG GENMASK(7, 0) + +#define GET_GROUPS_NR(x) le32_get_bits((x), GENMASK(31, 16)) +#define GET_PINS_NR(x) le32_get_bits((x), GENMASK(15, 0)) +#define GET_FUNCTIONS_NR(x) le32_get_bits((x), GENMASK(15, 0)) + +#define EXT_NAME_FLAG(x) le32_get_bits((x), BIT(31)) +#define NUM_ELEMS(x) le32_get_bits((x), GENMASK(15, 0)) + +#define REMAINING(x) le32_get_bits((x), GENMASK(31, 16)) +#define RETURNED(x) le32_get_bits((x), GENMASK(11, 0)) + +enum scmi_pinctrl_protocol_cmd { + PINCTRL_ATTRIBUTES = 0x3, + PINCTRL_LIST_ASSOCIATIONS = 0x4, + PINCTRL_CONFIG_GET = 0x5, + PINCTRL_CONFIG_SET = 0x6, + PINCTRL_FUNCTION_SELECT = 0x7, + PINCTRL_REQUEST = 0x8, + PINCTRL_RELEASE = 0x9, + PINCTRL_NAME_GET = 0xa, + PINCTRL_SET_PERMISSIONS = 0xb +}; + +struct scmi_msg_conf_set { + __le32 identifier; + __le32 attributes; + __le32 config_value; +}; + +struct scmi_msg_conf_get { + __le32 identifier; + __le32 attributes; +}; + +struct scmi_msg_pinctrl_protocol_attributes { + __le32 attributes_low; + __le32 attributes_high; +}; + +struct scmi_msg_pinctrl_attributes { + __le32 identifier; + __le32 flags; +}; + +struct scmi_resp_pinctrl_attributes { + __le32 attributes; + u8 name[SCMI_SHORT_NAME_MAX_SIZE]; +}; + +struct scmi_msg_pinctrl_list_assoc { + __le32 identifier; + __le32 flags; + __le32 index; +}; + +struct scmi_resp_pinctrl_list_assoc { + __le32 flags; + __le16 array[]; +}; + +struct scmi_msg_func_set { + __le32 identifier; + __le32 function_id; + __le32 flags; +}; + +struct scmi_msg_request { + __le32 identifier; + __le32 flags; +}; + +struct scmi_group_info { + char name[SCMI_MAX_STR_SIZE]; + bool present; + unsigned int *group_pins; + unsigned int nr_pins; +}; + +struct scmi_function_info { + char name[SCMI_MAX_STR_SIZE]; + bool present; + unsigned int *groups; + unsigned int nr_groups; +}; + +struct scmi_pin_info { + char name[SCMI_MAX_STR_SIZE]; + bool present; +}; + +struct scmi_pinctrl_info { + u32 version; + int nr_groups; + int nr_functions; + int nr_pins; + struct scmi_group_info *groups; + struct scmi_function_info *functions; + struct scmi_pin_info *pins; +}; + +static int scmi_pinctrl_attributes_get(const struct scmi_protocol_handle *ph, + struct scmi_pinctrl_info *pi) +{ + int ret; + struct scmi_xfer *t; + struct scmi_msg_pinctrl_protocol_attributes *attr; + + ret = ph->xops->xfer_get_init(ph, PROTOCOL_ATTRIBUTES, 0, sizeof(*attr), &t); + if (ret) + return ret; + + attr = t->rx.buf; + + ret = ph->xops->do_xfer(ph, t); + if (!ret) { + pi->nr_functions = GET_FUNCTIONS_NR(attr->attributes_high); + pi->nr_groups = GET_GROUPS_NR(attr->attributes_low); + pi->nr_pins = GET_PINS_NR(attr->attributes_low); + } + + ph->xops->xfer_put(ph, t); + return ret; +} + +static int scmi_pinctrl_count_get(const struct scmi_protocol_handle *ph, + enum scmi_pinctrl_selector_type type) +{ + struct scmi_pinctrl_info *pi = ph->get_priv(ph); + + switch (type) { + case PIN_TYPE: + return pi->nr_pins; + case GROUP_TYPE: + return pi->nr_groups; + case FUNCTION_TYPE: + return pi->nr_functions; + default: + return -EINVAL; + } +} + +static int scmi_pinctrl_validate_id(const struct scmi_protocol_handle *ph, + u32 identifier, + enum scmi_pinctrl_selector_type type) +{ + int value; + + value = scmi_pinctrl_count_get(ph, type); + if (value < 0) + return value; + + if (identifier >= value) + return -EINVAL; + + return 0; +} + +static int scmi_pinctrl_attributes(const struct scmi_protocol_handle *ph, + enum scmi_pinctrl_selector_type type, + u32 selector, char *name, + unsigned int *n_elems) +{ + int ret; + struct scmi_xfer *t; + struct scmi_msg_pinctrl_attributes *tx; + struct scmi_resp_pinctrl_attributes *rx; + + if (!name) + return -EINVAL; + + ret = scmi_pinctrl_validate_id(ph, selector, type); + if (ret) + return ret; + + ret = ph->xops->xfer_get_init(ph, PINCTRL_ATTRIBUTES, sizeof(*tx), sizeof(*rx), &t); + if (ret) + return ret; + + tx = t->tx.buf; + rx = t->rx.buf; + tx->identifier = cpu_to_le32(selector); + tx->flags = cpu_to_le32(type); + + ret = ph->xops->do_xfer(ph, t); + if (!ret) { + if (n_elems) + *n_elems = NUM_ELEMS(rx->attributes); + + strscpy(name, rx->name, SCMI_SHORT_NAME_MAX_SIZE); + } + + ph->xops->xfer_put(ph, t); + + /* + * If supported overwrite short name with the extended one; + * on error just carry on and use already provided short name. + */ + if (!ret && EXT_NAME_FLAG(rx->attributes)) + ph->hops->extended_name_get(ph, PINCTRL_NAME_GET, selector, + (u32 *)&type, name, + SCMI_MAX_STR_SIZE); + return ret; +} + +struct scmi_pinctrl_ipriv { + u32 selector; + enum scmi_pinctrl_selector_type type; + unsigned int *array; +}; + +static void iter_pinctrl_assoc_prepare_message(void *message, + unsigned int desc_index, + const void *priv) +{ + struct scmi_msg_pinctrl_list_assoc *msg = message; + const struct scmi_pinctrl_ipriv *p = priv; + + msg->identifier = cpu_to_le32(p->selector); + msg->flags = cpu_to_le32(p->type); + /* Set the number of OPPs to be skipped/already read */ + msg->index = cpu_to_le32(desc_index); +} + +static int iter_pinctrl_assoc_update_state(struct scmi_iterator_state *st, + const void *response, void *priv) +{ + const struct scmi_resp_pinctrl_list_assoc *r = response; + + st->num_returned = RETURNED(r->flags); + st->num_remaining = REMAINING(r->flags); + + return 0; +} + +static int +iter_pinctrl_assoc_process_response(const struct scmi_protocol_handle *ph, + const void *response, + struct scmi_iterator_state *st, void *priv) +{ + const struct scmi_resp_pinctrl_list_assoc *r = response; + struct scmi_pinctrl_ipriv *p = priv; + + p->array[st->desc_index + st->loop_idx] = + le16_to_cpu(r->array[st->loop_idx]); + + return 0; +} + +static int scmi_pinctrl_list_associations(const struct scmi_protocol_handle *ph, + u32 selector, + enum scmi_pinctrl_selector_type type, + u16 size, unsigned int *array) +{ + int ret; + void *iter; + struct scmi_iterator_ops ops = { + .prepare_message = iter_pinctrl_assoc_prepare_message, + .update_state = iter_pinctrl_assoc_update_state, + .process_response = iter_pinctrl_assoc_process_response, + }; + struct scmi_pinctrl_ipriv ipriv = { + .selector = selector, + .type = type, + .array = array, + }; + + if (!array || !size || type == PIN_TYPE) + return -EINVAL; + + ret = scmi_pinctrl_validate_id(ph, selector, type); + if (ret) + return ret; + + iter = ph->hops->iter_response_init(ph, &ops, size, + PINCTRL_LIST_ASSOCIATIONS, + sizeof(struct scmi_msg_pinctrl_list_assoc), + &ipriv); + + if (IS_ERR(iter)) + return PTR_ERR(iter); + + return ph->hops->iter_response_run(iter); +} + +static int scmi_pinctrl_config_get(const struct scmi_protocol_handle *ph, + u32 selector, + enum scmi_pinctrl_selector_type type, + u8 config_type, unsigned long *config_value) +{ + int ret; + u32 attributes; + struct scmi_xfer *t; + struct scmi_msg_conf_get *tx; + + if (!config_value || type == FUNCTION_TYPE) + return -EINVAL; + + ret = scmi_pinctrl_validate_id(ph, selector, type); + if (ret) + return ret; + + ret = ph->xops->xfer_get_init(ph, PINCTRL_CONFIG_GET, sizeof(*tx), sizeof(__le32), &t); + if (ret) + return ret; + + tx = t->tx.buf; + tx->identifier = cpu_to_le32(selector); + attributes = FIELD_PREP(REG_TYPE_BITS, type) | + FIELD_PREP(REG_CONFIG, config_type); + tx->attributes = cpu_to_le32(attributes); + + ret = ph->xops->do_xfer(ph, t); + if (!ret) + *config_value = get_unaligned_le32(t->rx.buf); + + ph->xops->xfer_put(ph, t); + return ret; +} + +static int scmi_pinctrl_config_set(const struct scmi_protocol_handle *ph, + u32 selector, + enum scmi_pinctrl_selector_type type, + u8 config_type, unsigned long config_value) +{ + struct scmi_xfer *t; + struct scmi_msg_conf_set *tx; + u32 attributes = 0; + int ret; + + if (type == FUNCTION_TYPE) + return -EINVAL; + + ret = scmi_pinctrl_validate_id(ph, selector, type); + if (ret) + return ret; + + ret = ph->xops->xfer_get_init(ph, PINCTRL_CONFIG_SET, sizeof(*tx), 0, &t); + if (ret) + return ret; + + tx = t->tx.buf; + tx->identifier = cpu_to_le32(selector); + attributes = FIELD_PREP(REG_TYPE_BITS, type) | + FIELD_PREP(REG_CONFIG, config_type); + tx->attributes = cpu_to_le32(attributes); + tx->config_value = cpu_to_le32(config_value); + + ret = ph->xops->do_xfer(ph, t); + + ph->xops->xfer_put(ph, t); + return ret; +} + +static int scmi_pinctrl_function_select(const struct scmi_protocol_handle *ph, + u32 identifier, + enum scmi_pinctrl_selector_type type, + u32 function_id) +{ + int ret; + struct scmi_xfer *t; + struct scmi_msg_func_set *tx; + + if (type == FUNCTION_TYPE) + return -EINVAL; + + ret = scmi_pinctrl_validate_id(ph, identifier, type); + if (ret) + return ret; + + ret = ph->xops->xfer_get_init(ph, PINCTRL_FUNCTION_SELECT, sizeof(*tx), 0, &t); + if (ret) + return ret; + + tx = t->tx.buf; + tx->identifier = cpu_to_le32(identifier); + tx->function_id = cpu_to_le32(function_id); + tx->flags = cpu_to_le32(type); + + ret = ph->xops->do_xfer(ph, t); + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_pinctrl_request(const struct scmi_protocol_handle *ph, + u32 identifier, + enum scmi_pinctrl_selector_type type) +{ + int ret; + struct scmi_xfer *t; + struct scmi_msg_request *tx; + + if (type == FUNCTION_TYPE) + return -EINVAL; + + ret = scmi_pinctrl_validate_id(ph, identifier, type); + if (ret) + return ret; + + ret = ph->xops->xfer_get_init(ph, PINCTRL_REQUEST, sizeof(*tx), 0, &t); + + tx = t->tx.buf; + tx->identifier = cpu_to_le32(identifier); + tx->flags = cpu_to_le32(type); + + ret = ph->xops->do_xfer(ph, t); + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_pinctrl_pin_request(const struct scmi_protocol_handle *ph, + u32 pin) +{ + return scmi_pinctrl_request(ph, pin, PIN_TYPE); +} + +static int scmi_pinctrl_free(const struct scmi_protocol_handle *ph, + u32 identifier, + enum scmi_pinctrl_selector_type type) +{ + int ret; + struct scmi_xfer *t; + struct scmi_msg_request *tx; + + if (type == FUNCTION_TYPE) + return -EINVAL; + + ret = scmi_pinctrl_validate_id(ph, identifier, type); + if (ret) + return ret; + + ret = ph->xops->xfer_get_init(ph, PINCTRL_RELEASE, sizeof(*tx), 0, &t); + + tx = t->tx.buf; + tx->identifier = cpu_to_le32(identifier); + tx->flags = cpu_to_le32(type); + + ret = ph->xops->do_xfer(ph, t); + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_pinctrl_pin_free(const struct scmi_protocol_handle *ph, u32 pin) +{ + return scmi_pinctrl_free(ph, pin, PIN_TYPE); +} + +static int scmi_pinctrl_get_group_info(const struct scmi_protocol_handle *ph, + u32 selector, + struct scmi_group_info *group) +{ + int ret; + + if (!group) + return -EINVAL; + + ret = scmi_pinctrl_attributes(ph, GROUP_TYPE, selector, + group->name, + &group->nr_pins); + if (ret) + return ret; + + if (!group->nr_pins) { + dev_err(ph->dev, "Group %d has 0 elements", selector); + return -ENODATA; + } + + group->group_pins = kmalloc_array(group->nr_pins, sizeof(*group->group_pins), GFP_KERNEL); + if (!group->group_pins) + return -ENOMEM; + + ret = scmi_pinctrl_list_associations(ph, selector, GROUP_TYPE, + group->nr_pins, group->group_pins); + if (ret) { + kfree(group->group_pins); + return ret; + } + + group->present = true; + return 0; +} + +static int scmi_pinctrl_get_group_name(const struct scmi_protocol_handle *ph, + u32 selector, const char **name) +{ + struct scmi_pinctrl_info *pi = ph->get_priv(ph); + + if (!name) + return -EINVAL; + + if (selector >= pi->nr_groups) + return -EINVAL; + + if (!pi->groups[selector].present) { + int ret; + + ret = scmi_pinctrl_get_group_info(ph, selector, + &pi->groups[selector]); + if (ret) + return ret; + } + + *name = pi->groups[selector].name; + + return 0; +} + +static int scmi_pinctrl_group_pins_get(const struct scmi_protocol_handle *ph, + u32 selector, const unsigned int **pins, + unsigned int *nr_pins) +{ + struct scmi_pinctrl_info *pi = ph->get_priv(ph); + + if (!pins || !nr_pins) + return -EINVAL; + + if (selector >= pi->nr_groups) + return -EINVAL; + + if (!pi->groups[selector].present) { + int ret; + + ret = scmi_pinctrl_get_group_info(ph, selector, + &pi->groups[selector]); + if (ret) + return ret; + } + + *pins = pi->groups[selector].group_pins; + *nr_pins = pi->groups[selector].nr_pins; + + return 0; +} + +static int scmi_pinctrl_get_function_info(const struct scmi_protocol_handle *ph, + u32 selector, + struct scmi_function_info *func) +{ + int ret; + + if (!func) + return -EINVAL; + + ret = scmi_pinctrl_attributes(ph, FUNCTION_TYPE, selector, + func->name, + &func->nr_groups); + if (ret) + return ret; + + if (!func->nr_groups) { + dev_err(ph->dev, "Function %d has 0 elements", selector); + return -ENODATA; + } + + func->groups = kmalloc_array(func->nr_groups, sizeof(*func->groups), GFP_KERNEL); + if (!func->groups) + return -ENOMEM; + + ret = scmi_pinctrl_list_associations(ph, selector, FUNCTION_TYPE, + func->nr_groups, func->groups); + if (ret) { + kfree(func->groups); + return ret; + } + + func->present = true; + return 0; +} + +static int scmi_pinctrl_get_function_name(const struct scmi_protocol_handle *ph, + u32 selector, const char **name) +{ + struct scmi_pinctrl_info *pi = ph->get_priv(ph); + + if (!name) + return -EINVAL; + + if (selector >= pi->nr_functions) + return -EINVAL; + + if (!pi->functions[selector].present) { + int ret; + + ret = scmi_pinctrl_get_function_info(ph, selector, + &pi->functions[selector]); + if (ret) + return ret; + } + + *name = pi->functions[selector].name; + return 0; +} + +static int scmi_pinctrl_function_groups_get(const struct scmi_protocol_handle *ph, + u32 selector, + unsigned int *nr_groups, + const unsigned int **groups) +{ + struct scmi_pinctrl_info *pi = ph->get_priv(ph); + + if (!groups || !nr_groups) + return -EINVAL; + + if (selector >= pi->nr_functions) + return -EINVAL; + + if (!pi->functions[selector].present) { + int ret; + + ret = scmi_pinctrl_get_function_info(ph, selector, + &pi->functions[selector]); + if (ret) + return ret; + } + + *groups = pi->functions[selector].groups; + *nr_groups = pi->functions[selector].nr_groups; + + return 0; +} + +static int scmi_pinctrl_mux_set(const struct scmi_protocol_handle *ph, + u32 selector, u32 group) +{ + return scmi_pinctrl_function_select(ph, group, GROUP_TYPE, + selector); +} + +static int scmi_pinctrl_get_pin_info(const struct scmi_protocol_handle *ph, + u32 selector, struct scmi_pin_info *pin) +{ + int ret; + + if (!pin) + return -EINVAL; + + ret = scmi_pinctrl_attributes(ph, PIN_TYPE, selector, + pin->name, NULL); + if (ret) + return ret; + + pin->present = true; + return 0; +} + +static int scmi_pinctrl_get_pin_name(const struct scmi_protocol_handle *ph, + u32 selector, const char **name) +{ + struct scmi_pinctrl_info *pi = ph->get_priv(ph); + + if (!name) + return -EINVAL; + + if (selector >= pi->nr_pins) + return -EINVAL; + + if (!pi->pins[selector].present) { + int ret; + + ret = scmi_pinctrl_get_pin_info(ph, selector, + &pi->pins[selector]); + if (ret) + return ret; + } + + *name = pi->pins[selector].name; + + return 0; +} + +static int scmi_pinctrl_name_get(const struct scmi_protocol_handle *ph, + u32 selector, + enum scmi_pinctrl_selector_type type, + const char **name) +{ + switch (type) { + case PIN_TYPE: + return scmi_pinctrl_get_pin_name(ph, selector, name); + case GROUP_TYPE: + return scmi_pinctrl_get_group_name(ph, selector, name); + case FUNCTION_TYPE: + return scmi_pinctrl_get_function_name(ph, selector, name); + default: + return -EINVAL; + } +} + +static const struct scmi_pinctrl_proto_ops pinctrl_proto_ops = { + .count_get = scmi_pinctrl_count_get, + .name_get = scmi_pinctrl_name_get, + .group_pins_get = scmi_pinctrl_group_pins_get, + .function_groups_get = scmi_pinctrl_function_groups_get, + .mux_set = scmi_pinctrl_mux_set, + .config_get = scmi_pinctrl_config_get, + .config_set = scmi_pinctrl_config_set, + .pin_request = scmi_pinctrl_pin_request, + .pin_free = scmi_pinctrl_pin_free, +}; + +static int scmi_pinctrl_protocol_init(const struct scmi_protocol_handle *ph) +{ + int ret; + u32 version; + struct scmi_pinctrl_info *pinfo; + + ret = ph->xops->version_get(ph, &version); + if (ret) + return ret; + + dev_dbg(ph->dev, "Pinctrl Version %d.%d\n", + PROTOCOL_REV_MAJOR(version), PROTOCOL_REV_MINOR(version)); + + pinfo = devm_kzalloc(ph->dev, sizeof(*pinfo), GFP_KERNEL); + if (!pinfo) + return -ENOMEM; + + ret = scmi_pinctrl_attributes_get(ph, pinfo); + if (ret) + return ret; + + pinfo->pins = devm_kcalloc(ph->dev, pinfo->nr_pins, + sizeof(*pinfo->pins), + GFP_KERNEL); + if (!pinfo->pins) + return -ENOMEM; + + pinfo->groups = devm_kcalloc(ph->dev, pinfo->nr_groups, + sizeof(*pinfo->groups), + GFP_KERNEL); + if (!pinfo->groups) + return -ENOMEM; + + pinfo->functions = devm_kcalloc(ph->dev, pinfo->nr_functions, + sizeof(*pinfo->functions), + GFP_KERNEL); + if (!pinfo->functions) + return -ENOMEM; + + pinfo->version = version; + + return ph->set_priv(ph, pinfo); +} + +static int scmi_pinctrl_protocol_deinit(const struct scmi_protocol_handle *ph) +{ + int i; + struct scmi_pinctrl_info *pi = ph->get_priv(ph); + + for (i = 0; i < pi->nr_groups; i++) { + if (pi->groups[i].present) { + kfree(pi->groups[i].group_pins); + pi->groups[i].present = false; + } + } + + for (i = 0; i < pi->nr_functions; i++) { + if (pi->functions[i].present) { + kfree(pi->functions[i].groups); + pi->functions[i].present = false; + } + } + + return 0; +} + +static const struct scmi_protocol scmi_pinctrl = { + .id = SCMI_PROTOCOL_PINCTRL, + .owner = THIS_MODULE, + .instance_init = &scmi_pinctrl_protocol_init, + .instance_deinit = &scmi_pinctrl_protocol_deinit, + .ops = &pinctrl_proto_ops, +}; + +DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(pinctrl, scmi_pinctrl) diff --git a/drivers/firmware/arm_scmi/protocols.h b/drivers/firmware/arm_scmi/protocols.h index b3c6314bb4b8..674f949354f9 100644 --- a/drivers/firmware/arm_scmi/protocols.h +++ b/drivers/firmware/arm_scmi/protocols.h @@ -346,5 +346,6 @@ DECLARE_SCMI_REGISTER_UNREGISTER(sensors); DECLARE_SCMI_REGISTER_UNREGISTER(voltage); DECLARE_SCMI_REGISTER_UNREGISTER(system); DECLARE_SCMI_REGISTER_UNREGISTER(powercap); +DECLARE_SCMI_REGISTER_UNREGISTER(pinctrl); #endif /* _SCMI_PROTOCOLS_H */ diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h index 0ce5746a4470..11bb69479076 100644 --- a/include/linux/scmi_protocol.h +++ b/include/linux/scmi_protocol.h @@ -676,6 +676,47 @@ struct scmi_powercap_proto_ops { u32 *power_thresh_high); }; +enum scmi_pinctrl_selector_type { + PIN_TYPE = 0, + GROUP_TYPE, + FUNCTION_TYPE, +}; + +/** + * struct scmi_pinctrl_proto_ops - represents the various operations provided + * by SCMI Pinctrl Protocol + * + * @count_get: returns count of the registered elements in given type + * @name_get: returns name by index of given type + * @group_pins_get: returns the set of pins, assigned to the specified group + * @function_groups_get: returns the set of groups, assigned to the specified + * function + * @mux_set: set muxing function for groups of pins + * @config_get: returns configuration parameter for pin or group + * @config_set: sets the configuration parameter for pin or group + * @pin_request: aquire pin before selecting mux setting + * @pin_free: frees pin, acquired by request_pin call + */ +struct scmi_pinctrl_proto_ops { + int (*count_get)(const struct scmi_protocol_handle *ph, + enum scmi_pinctrl_selector_type type); + int (*name_get)(const struct scmi_protocol_handle *ph, u32 selector, + enum scmi_pinctrl_selector_type type, const char **name); + int (*group_pins_get)(const struct scmi_protocol_handle *ph, u32 selector, + const unsigned int **pins, unsigned int *nr_pins); + int (*function_groups_get)(const struct scmi_protocol_handle *ph, u32 selector, + unsigned int *nr_groups, const unsigned int **groups); + int (*mux_set)(const struct scmi_protocol_handle *ph, u32 selector, u32 group); + int (*config_get)(const struct scmi_protocol_handle *ph, u32 selector, + enum scmi_pinctrl_selector_type type, + u8 config_type, unsigned long *config_value); + int (*config_set)(const struct scmi_protocol_handle *ph, u32 selector, + enum scmi_pinctrl_selector_type type, + u8 config_type, unsigned long config_value); + int (*pin_request)(const struct scmi_protocol_handle *ph, u32 pin); + int (*pin_free)(const struct scmi_protocol_handle *ph, u32 pin); +}; + /** * struct scmi_notify_ops - represents notifications' operations provided by * SCMI core @@ -783,6 +824,7 @@ enum scmi_std_protocol { SCMI_PROTOCOL_RESET = 0x16, SCMI_PROTOCOL_VOLTAGE = 0x17, SCMI_PROTOCOL_POWERCAP = 0x18, + SCMI_PROTOCOL_PINCTRL = 0x19, }; enum scmi_system_events {