From patchwork Mon Dec 13 12:04:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henning Schild X-Patchwork-Id: 523556 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 3BCC5C4332F for ; Mon, 13 Dec 2021 12:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236453AbhLMMF2 (ORCPT ); Mon, 13 Dec 2021 07:05:28 -0500 Received: from mail-vi1eur05on2057.outbound.protection.outlook.com ([40.107.21.57]:30720 "EHLO EUR05-VI1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231464AbhLMMFR (ORCPT ); Mon, 13 Dec 2021 07:05:17 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=E7uCnrK66u6EYdzkhV594z9eBgBCac2KLxDlP6zUVxfvgPZxe6FIx+pkimx3Kmr1Xusg7tpQ9JeWlh8TC2LqMnOlqlgiFXblFQ8nsyMth0fz3cEauuQCAGGpvhnmzQn56SBir0xewkVXSPRAa8buYurJO1CqGQt5O2Dyc2H0IZQV+AnpqUBBGYyBqiShTjwKJFSRV8wKUCCa54/8xJiAv5IAnoUUIIbrUiinfpCx1ac6UCivhMh1/j4HZjDi9rcEbrudgRrdZk6PIEIOYEaPs1bUq/JVmVq7YDgzRD+KOIrMA2YznVcId2LRzbQvTG5fQty1ILWUELQKb/1vGBEcSg== 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=ln0ZnVsgkeqt6Yn0oalr7/XDDfXbDzMIcyaFMYjPe40=; b=KfQ7/prHgMJkBCrcDR/DNcDZ2r1sDWZYkFdgemAPa+8ABXdn5f0MKYcicgsK0XIyRNOHFyYszpbxh05ZAFVHDHV2+9nDa4oQQU9H5V57CbTpdBUR9UvMkFjdytloSbclFnJ+CcfFvcb00jrcin0Ku4CxQnynwJ0Mej7pBQ9yuvO6RciSdTMRfD0bC5hg+CmHB4QLkmnqebJkmtkkJlCl76uVjEskfpcX0lmL4IHSVCfWXGqbRf54Cj9VsdXV1OoN5lToC+O5CZiys/4oZFj/jNLOg7n9Y7S1qfJmrNk9SAx1fCamuhb4RntSZwz5GoJjreP6k0FekI3FB6GaJpq/NA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 194.138.21.71) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=siemens.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=siemens.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=siemens.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ln0ZnVsgkeqt6Yn0oalr7/XDDfXbDzMIcyaFMYjPe40=; b=CXZVh+r3HJ5oSpa6sIuok2yrFzEHCxgZYl0qo38SXYpINuTjMFBLSkPZ3kZMBfqPtJBMP+SA7+75aEnqiLB/QVYYMqgaLlHlaFPug7Ix8EUx0BCX7OGAED1NiM995eOXGac6t+BUoGqNDlOOpWZdbfGDmguTTQ8I9cr3usEERay7RnICXK1akThyFJQVhI0Y/ll6fclTzICs+/B+XvzVIvbmsnsbcAgz6ebgeRNnZ5JuydCxf1vsqGiT1wGLQ04qusl++h7nfio+biQAmhiroqjjBSF0vfarAsXGmyvrhw11KFP00d8/Ij6bD2LfcRuleOMxR8GXiOqsBwzC/sfBbg== Received: from OL1P279CA0044.NORP279.PROD.OUTLOOK.COM (2603:10a6:e10:14::13) by AM9PR10MB3990.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:20b:1cf::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4778.17; Mon, 13 Dec 2021 12:05:14 +0000 Received: from HE1EUR01FT037.eop-EUR01.prod.protection.outlook.com (2603:10a6:e10:14:cafe::94) by OL1P279CA0044.outlook.office365.com (2603:10a6:e10:14::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4778.13 via Frontend Transport; Mon, 13 Dec 2021 12:05:14 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 194.138.21.71) smtp.mailfrom=siemens.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=siemens.com; Received-SPF: Pass (protection.outlook.com: domain of siemens.com designates 194.138.21.71 as permitted sender) receiver=protection.outlook.com; client-ip=194.138.21.71; helo=hybrid.siemens.com; Received: from hybrid.siemens.com (194.138.21.71) by HE1EUR01FT037.mail.protection.outlook.com (10.152.1.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4778.12 via Frontend Transport; Mon, 13 Dec 2021 12:05:13 +0000 Received: from DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) by DEMCHDC9SKA.ad011.siemens.net (194.138.21.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 13 Dec 2021 13:05:13 +0100 Received: from md1za8fc.ad001.siemens.net (139.25.69.80) by DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 13 Dec 2021 13:05:12 +0100 From: Henning Schild To: , , , CC: Srikanth Krishnakar , Jan Kiszka , Henning Schild , "Gerd Haeussler" , Guenter Roeck , Wim Van Sebroeck , Mark Gross , Hans de Goede , Pavel Machek , Andy Shevchenko , Enrico Weigelt Subject: [PATCH v5 1/4] platform/x86: simatic-ipc: add main driver for Siemens devices Date: Mon, 13 Dec 2021 13:04:59 +0100 Message-ID: <20211213120502.20661-2-henning.schild@siemens.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211213120502.20661-1-henning.schild@siemens.com> References: <20211213120502.20661-1-henning.schild@siemens.com> MIME-Version: 1.0 X-Originating-IP: [139.25.69.80] X-ClientProxiedBy: DEMCHDC89YA.ad011.siemens.net (139.25.226.104) To DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 9741f765-0615-4aed-e0ef-08d9be30d1e4 X-MS-TrafficTypeDiagnostic: AM9PR10MB3990:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:972; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: yHq6Y+QHPKX0goyQ/GqrK0MhHgC1Kk4Fy7p4LOXDTS6BFjDaNSuwvUWj/ItsZLv7aPmwZm4TZYzCtbLFNOHc7oJUrnvG25TAd7GEk9RL9FRCMrXvjOJqwwQ9C+EtbiXxOSDbPIkzBO/XLlxsjWZ4ycFpjLIXPAaKqtIi5XT76ZALHngQ+50C0Cd1Qr0sOOk+JimP692ScKidfGMNR4x1RnKLvCW3HTV9fOPQCzYwp8765ciMKeqLQ6eA/1wHzn0hEVBcMkIX33hJzHabb2IRzgAJcIOPuMqEls3z9dQFdjnybhQrogz7onvQU/i4F9UrFjGguFhMmpbaYkx4fjDFadyNZFjr+07R7KSRCLj5+V8HjO/MoQz9ujSQ5TBYLaUKEeegcYDFm7fFMU+7LSJvLbezBSh4IkLj+U5lfqzVw4YpXokxh0XuXCmvZolk/ryJvmZmYxc+2THUCG1rZ3F2inTgancG+2DyIZ0OzwGmGulFTKM9+bRVoHR4aYDN30TVRdWB+Rb6ckhFEN+Ib8pwnHiOAG5AAQcxV6VOez6itlhYgWMJlJ3rVVDH2dR5oP1D7+lTg/tVOCM6nAhN5O5jf+yZ+hZLR2MQVXpXmmOSlvpr+AaSmvwzJ95sgCnLAGK2sIU4b03ss83q/6l2SGOldhDS/A5mQ4UI0x0I3i1riIOdc43poCBRNKBeEsgfAk1Rhk8+BfT6ZETjVrqXpKSTePQxnSp5sq+XrqE1gvVF1zc= X-Forefront-Antispam-Report: CIP:194.138.21.71; CTRY:DE; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:hybrid.siemens.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(4636009)(36840700001)(46966006)(36756003)(30864003)(4326008)(5660300002)(81166007)(356005)(83380400001)(70586007)(336012)(86362001)(7416002)(2906002)(26005)(8676002)(54906003)(82310400004)(70206006)(44832011)(8936002)(2616005)(956004)(508600001)(110136005)(1076003)(36860700001)(6666004)(47076005)(82960400001)(16526019)(316002)(186003)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Dec 2021 12:05:13.8000 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9741f765-0615-4aed-e0ef-08d9be30d1e4 X-MS-Exchange-CrossTenant-Id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=38ae3bcd-9579-4fd4-adda-b42e1495d55a; Ip=[194.138.21.71]; Helo=[hybrid.siemens.com] X-MS-Exchange-CrossTenant-AuthSource: HE1EUR01FT037.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR10MB3990 Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org This mainly implements detection of these devices and will allow secondary drivers to work on such machines. The identification is DMI-based with a vendor specific way to tell them apart in a reliable way. Drivers for LEDs and Watchdogs will follow to make use of that platform detection. There is also some code to allow secondary drivers to find GPIO memory, that needs to be in place because the pinctrl drivers do not come up. Signed-off-by: Henning Schild --- drivers/platform/x86/Kconfig | 12 ++ drivers/platform/x86/Makefile | 3 + drivers/platform/x86/simatic-ipc.c | 176 ++++++++++++++++++ .../platform_data/x86/simatic-ipc-base.h | 29 +++ include/linux/platform_data/x86/simatic-ipc.h | 72 +++++++ 5 files changed, 292 insertions(+) create mode 100644 drivers/platform/x86/simatic-ipc.c create mode 100644 include/linux/platform_data/x86/simatic-ipc-base.h create mode 100644 include/linux/platform_data/x86/simatic-ipc.h diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 7400bc5da5be..a59f3bff5ae1 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1075,6 +1075,18 @@ config INTEL_SCU_IPC_UTIL low level access for debug work and updating the firmware. Say N unless you will be doing this on an Intel MID platform. +config SIEMENS_SIMATIC_IPC + tristate "Siemens Simatic IPC Class driver" + depends on PCI + help + This Simatic IPC class driver is the central of several drivers. It + is mainly used for system identification, after which drivers in other + classes will take care of driving specifics of those machines. + i.e. LEDs and watchdog. + + To compile this driver as a module, choose M here: the module + will be called simatic-ipc. + endif # X86_PLATFORM_DEVICES config PMC_ATOM diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 219478061683..310d1d2a0886 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -123,3 +123,6 @@ obj-$(CONFIG_INTEL_SCU_PLATFORM) += intel_scu_pltdrv.o obj-$(CONFIG_INTEL_SCU_WDT) += intel_scu_wdt.o obj-$(CONFIG_INTEL_SCU_IPC_UTIL) += intel_scu_ipcutil.o obj-$(CONFIG_PMC_ATOM) += pmc_atom.o + +# Siemens Simatic Industrial PCs +obj-$(CONFIG_SIEMENS_SIMATIC_IPC) += simatic-ipc.o diff --git a/drivers/platform/x86/simatic-ipc.c b/drivers/platform/x86/simatic-ipc.c new file mode 100644 index 000000000000..b599cda5ba3c --- /dev/null +++ b/drivers/platform/x86/simatic-ipc.c @@ -0,0 +1,176 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Siemens SIMATIC IPC platform driver + * + * Copyright (c) Siemens AG, 2018-2021 + * + * Authors: + * Henning Schild + * Jan Kiszka + * Gerd Haeussler + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include + +static struct platform_device *ipc_led_platform_device; +static struct platform_device *ipc_wdt_platform_device; + +static const struct dmi_system_id simatic_ipc_whitelist[] = { + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"), + }, + }, + {} +}; + +static struct simatic_ipc_platform platform_data; + +static struct { + u32 station_id; + u8 led_mode; + u8 wdt_mode; +} device_modes[] = { + {SIMATIC_IPC_IPC127E, SIMATIC_IPC_DEVICE_127E, SIMATIC_IPC_DEVICE_NONE}, + {SIMATIC_IPC_IPC227D, SIMATIC_IPC_DEVICE_227D, SIMATIC_IPC_DEVICE_NONE}, + {SIMATIC_IPC_IPC227E, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_227E}, + {SIMATIC_IPC_IPC277E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227E}, + {SIMATIC_IPC_IPC427D, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE}, + {SIMATIC_IPC_IPC427E, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_427E}, + {SIMATIC_IPC_IPC477E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_427E}, +}; + +static int register_platform_devices(u32 station_id) +{ + u8 ledmode = SIMATIC_IPC_DEVICE_NONE; + u8 wdtmode = SIMATIC_IPC_DEVICE_NONE; + int i; + + platform_data.devmode = SIMATIC_IPC_DEVICE_NONE; + + for (i = 0; i < ARRAY_SIZE(device_modes); i++) { + if (device_modes[i].station_id == station_id) { + ledmode = device_modes[i].led_mode; + wdtmode = device_modes[i].wdt_mode; + break; + } + } + + if (ledmode != SIMATIC_IPC_DEVICE_NONE) { + platform_data.devmode = ledmode; + ipc_led_platform_device = + platform_device_register_data(NULL, + KBUILD_MODNAME "_leds", PLATFORM_DEVID_NONE, + &platform_data, + sizeof(struct simatic_ipc_platform)); + if (IS_ERR(ipc_led_platform_device)) + return PTR_ERR(ipc_led_platform_device); + + pr_debug("device=%s created\n", + ipc_led_platform_device->name); + } + + if (wdtmode != SIMATIC_IPC_DEVICE_NONE) { + platform_data.devmode = wdtmode; + ipc_wdt_platform_device = + platform_device_register_data(NULL, + KBUILD_MODNAME "_wdt", PLATFORM_DEVID_NONE, + &platform_data, + sizeof(struct simatic_ipc_platform)); + if (IS_ERR(ipc_wdt_platform_device)) + return PTR_ERR(ipc_wdt_platform_device); + + pr_debug("device=%s created\n", + ipc_wdt_platform_device->name); + } + + if (ledmode == SIMATIC_IPC_DEVICE_NONE && + wdtmode == SIMATIC_IPC_DEVICE_NONE) { + pr_warn("unsupported IPC detected, station id=%08x\n", + station_id); + return -EINVAL; + } + + return 0; +} + +/* FIXME: this should eventually be done with generic P2SB discovery code + * the individual drivers for watchdogs and LEDs access memory that implements + * GPIO, but pinctrl will not come up because of missing ACPI entries + * + * While there is no conflict a cleaner solution would be to somehow bring up + * pinctrl even with these ACPI entries missing, and base the drivers on pinctrl. + * After which the following function could be dropped, together with the code + * poking the memory. + */ +/* + * Get membase address from PCI, used in leds and wdt module. Here we read + * the bar0. The final address calculation is done in the appropriate modules + */ +u32 simatic_ipc_get_membase0(unsigned int p2sb) +{ + struct pci_bus *bus; + u32 bar0 = 0; + /* + * The GPIO memory is in bar0 of the hidden P2SB device. + * Unhide the device to have a quick look at it, before we hide it + * again. + * Also grab the pci rescan lock so that device does not get discovered + * and remapped while it is visible. + * This code is inspired by drivers/mfd/lpc_ich.c + */ + bus = pci_find_bus(0, 0); + pci_lock_rescan_remove(); + pci_bus_write_config_byte(bus, p2sb, 0xE1, 0x0); + pci_bus_read_config_dword(bus, p2sb, PCI_BASE_ADDRESS_0, &bar0); + + bar0 &= ~0xf; + pci_bus_write_config_byte(bus, p2sb, 0xE1, 0x1); + pci_unlock_rescan_remove(); + + return bar0; +} +EXPORT_SYMBOL(simatic_ipc_get_membase0); + +static int __init simatic_ipc_init_module(void) +{ + const struct dmi_system_id *match; + u32 station_id; + int err; + + match = dmi_first_match(simatic_ipc_whitelist); + if (!match) + return 0; + + err = dmi_walk(simatic_ipc_find_dmi_entry_helper, &station_id); + + if (err || station_id == SIMATIC_IPC_INVALID_STATION_ID) { + pr_warn("DMI entry %d not found\n", SIMATIC_IPC_DMI_ENTRY_OEM); + return 0; + } + + return register_platform_devices(station_id); +} + +static void __exit simatic_ipc_exit_module(void) +{ + platform_device_unregister(ipc_led_platform_device); + ipc_led_platform_device = NULL; + + platform_device_unregister(ipc_wdt_platform_device); + ipc_wdt_platform_device = NULL; +} + +module_init(simatic_ipc_init_module); +module_exit(simatic_ipc_exit_module); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Gerd Haeussler "); +MODULE_ALIAS("dmi:*:svnSIEMENSAG:*"); diff --git a/include/linux/platform_data/x86/simatic-ipc-base.h b/include/linux/platform_data/x86/simatic-ipc-base.h new file mode 100644 index 000000000000..62d2bc774067 --- /dev/null +++ b/include/linux/platform_data/x86/simatic-ipc-base.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Siemens SIMATIC IPC drivers + * + * Copyright (c) Siemens AG, 2018-2021 + * + * Authors: + * Henning Schild + * Gerd Haeussler + */ + +#ifndef __PLATFORM_DATA_X86_SIMATIC_IPC_BASE_H +#define __PLATFORM_DATA_X86_SIMATIC_IPC_BASE_H + +#include + +#define SIMATIC_IPC_DEVICE_NONE 0 +#define SIMATIC_IPC_DEVICE_227D 1 +#define SIMATIC_IPC_DEVICE_427E 2 +#define SIMATIC_IPC_DEVICE_127E 3 +#define SIMATIC_IPC_DEVICE_227E 4 + +struct simatic_ipc_platform { + u8 devmode; +}; + +u32 simatic_ipc_get_membase0(unsigned int p2sb); + +#endif /* __PLATFORM_DATA_X86_SIMATIC_IPC_BASE_H */ diff --git a/include/linux/platform_data/x86/simatic-ipc.h b/include/linux/platform_data/x86/simatic-ipc.h new file mode 100644 index 000000000000..f3b76b39776b --- /dev/null +++ b/include/linux/platform_data/x86/simatic-ipc.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Siemens SIMATIC IPC drivers + * + * Copyright (c) Siemens AG, 2018-2021 + * + * Authors: + * Henning Schild + * Gerd Haeussler + */ + +#ifndef __PLATFORM_DATA_X86_SIMATIC_IPC_H +#define __PLATFORM_DATA_X86_SIMATIC_IPC_H + +#include +#include + +#define SIMATIC_IPC_DMI_ENTRY_OEM 129 +/* binary type */ +#define SIMATIC_IPC_DMI_TYPE 0xff +#define SIMATIC_IPC_DMI_GROUP 0x05 +#define SIMATIC_IPC_DMI_ENTRY 0x02 +#define SIMATIC_IPC_DMI_TID 0x02 + +enum simatic_ipc_station_ids { + SIMATIC_IPC_INVALID_STATION_ID = 0, + SIMATIC_IPC_IPC227D = 0x00000501, + SIMATIC_IPC_IPC427D = 0x00000701, + SIMATIC_IPC_IPC227E = 0x00000901, + SIMATIC_IPC_IPC277E = 0x00000902, + SIMATIC_IPC_IPC427E = 0x00000A01, + SIMATIC_IPC_IPC477E = 0x00000A02, + SIMATIC_IPC_IPC127E = 0x00000D01, +}; + +static inline u32 simatic_ipc_get_station_id(u8 *data, int max_len) +{ + struct { + u8 type; /* type (0xff = binary) */ + u8 len; /* len of data entry */ + u8 group; + u8 entry; + u8 tid; + __le32 station_id; /* station id (LE) */ + } __packed * data_entry = (void *)data + sizeof(struct dmi_header); + + while ((u8 *)data_entry < data + max_len) { + if (data_entry->type == SIMATIC_IPC_DMI_TYPE && + data_entry->len == sizeof(*data_entry) && + data_entry->group == SIMATIC_IPC_DMI_GROUP && + data_entry->entry == SIMATIC_IPC_DMI_ENTRY && + data_entry->tid == SIMATIC_IPC_DMI_TID) { + return le32_to_cpu(data_entry->station_id); + } + data_entry = (void *)((u8 *)(data_entry) + data_entry->len); + } + + return SIMATIC_IPC_INVALID_STATION_ID; +} + +static inline void +simatic_ipc_find_dmi_entry_helper(const struct dmi_header *dh, void *_data) +{ + u32 *id = _data; + + if (dh->type != SIMATIC_IPC_DMI_ENTRY_OEM) + return; + + *id = simatic_ipc_get_station_id((u8 *)dh, dh->length); +} + +#endif /* __PLATFORM_DATA_X86_SIMATIC_IPC_H */ From patchwork Mon Dec 13 12:05:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henning Schild X-Patchwork-Id: 523835 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 8A99BC43217 for ; Mon, 13 Dec 2021 12:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236461AbhLMMFa (ORCPT ); Mon, 13 Dec 2021 07:05:30 -0500 Received: from mail-am6eur05on2045.outbound.protection.outlook.com ([40.107.22.45]:44448 "EHLO EUR05-AM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S232598AbhLMMFR (ORCPT ); Mon, 13 Dec 2021 07:05:17 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=dyYAlrb45WwevGBS9qJCAV0xtL9MFvPSdFFbeSJ/kW4XjqoYJ1Kfj9UjmnzFjKX+C+l40ndLjZvU+DXn075iX0w7AoP/yF5X8Xm5R+fgJV7duRcg6dermjq4wqpfFjjQBUKXqh6wDyWHtjeosONJ1McG87St54tP0IssGkQjllhI1JJARJyWeJrh6eKPAtKvuhi2UEpeMQwcw9WqhC6kq9FxDULq9X6RuKd8Dnzk1bjDiq3Oc6n8zI31stp3DTDON0h+x/6mKEWwNJZrr517uuiFPDwrVX8TJKf40pzPQdtEKB3hmUtnnTpHe/Ddv5ayG9cQFL1HjfCz19DGfxGk5Q== 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=q2DD134lpTFwEvu4AJH5ciN6KtYuWuHGPSkmng8lTnE=; b=lrO25rjAqT4BY6bMdcuDjZsNMkT2IDM/PKUFObPkYqp/kQv6S0nIhDk3tTkcfLDa8MGSJ8wh5NhN0ZiiFWOvHg5SxRkM4WR4LZjqZUI0qYvAPXF88JdSAFLfqNnOyBExgLoEM+ZhDXDoWnXM7qMgRIFrggUy9BB3K5MkbqO2ABPDeeDO8L3TDzEFsLeNSTQKYFfVUEtpaulaYBsisuwf+DrnfDeitffaye7Z9ta7aclUtF7CNcLIZoWoY09A5TVyxQ+S8P3yExo3SO8sTS7wpiPaDZ7TLanjQOJXSjNYMyNKYLENmyGDFzaGvsmbTivrwI6UP/fIjjNeBNPGEm68lA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 194.138.21.70) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=siemens.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=siemens.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=siemens.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=q2DD134lpTFwEvu4AJH5ciN6KtYuWuHGPSkmng8lTnE=; b=FD1dD+lKC+PQbIYopirGIkODbJmtZR5vv6QSqmuHaocUcRNoQv4dheAJtW54sGk+I55jrlocQEPreHzBo0AUoa0rENdto7LErs9yVnFZlH1TA6xa7b6bf8tzZ0WIS8ze7w2qvJm83+PxhdH7eq4Vy/bjkOqXp88jdVzPuFdPJPpoCbP5TLLfFMVUIiqy2qsPPQR07EOjyDS7Kz6Hi0LYUNf3+Ikww68nD8pRbT8A0dMgM8RlEJMdDdnPrgNE4Ho/kqfNBEFEJdgBRWiVCuC/OhzVXMSBY92AarPsmwVKcmwAI8+glmoO8MN3HS5rveh41SJyFJqQqvWM6EOxi/vsDA== Received: from DB6PR0601CA0043.eurprd06.prod.outlook.com (2603:10a6:4:17::29) by DB7PR10MB2524.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:10:50::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4778.16; Mon, 13 Dec 2021 12:05:13 +0000 Received: from DB5EUR01FT048.eop-EUR01.prod.protection.outlook.com (2603:10a6:4:17:cafe::75) by DB6PR0601CA0043.outlook.office365.com (2603:10a6:4:17::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4778.15 via Frontend Transport; Mon, 13 Dec 2021 12:05:13 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 194.138.21.70) smtp.mailfrom=siemens.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=siemens.com; Received-SPF: Pass (protection.outlook.com: domain of siemens.com designates 194.138.21.70 as permitted sender) receiver=protection.outlook.com; client-ip=194.138.21.70; helo=hybrid.siemens.com; Received: from hybrid.siemens.com (194.138.21.70) by DB5EUR01FT048.mail.protection.outlook.com (10.152.5.166) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4778.12 via Frontend Transport; Mon, 13 Dec 2021 12:05:13 +0000 Received: from DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) by DEMCHDC9SJA.ad011.siemens.net (194.138.21.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 13 Dec 2021 13:05:13 +0100 Received: from md1za8fc.ad001.siemens.net (139.25.69.80) by DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 13 Dec 2021 13:05:13 +0100 From: Henning Schild To: , , , CC: Srikanth Krishnakar , Jan Kiszka , Henning Schild , "Gerd Haeussler" , Guenter Roeck , Wim Van Sebroeck , Mark Gross , Hans de Goede , Pavel Machek , Andy Shevchenko , Enrico Weigelt Subject: [PATCH v5 2/4] leds: simatic-ipc-leds: add new driver for Siemens Industial PCs Date: Mon, 13 Dec 2021 13:05:00 +0100 Message-ID: <20211213120502.20661-3-henning.schild@siemens.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211213120502.20661-1-henning.schild@siemens.com> References: <20211213120502.20661-1-henning.schild@siemens.com> MIME-Version: 1.0 X-Originating-IP: [139.25.69.80] X-ClientProxiedBy: DEMCHDC89YA.ad011.siemens.net (139.25.226.104) To DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: b46b062e-0659-4330-d343-08d9be30d1ed X-MS-TrafficTypeDiagnostic: DB7PR10MB2524:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:469; 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:194.138.21.70; CTRY:DE; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:hybrid.siemens.com; PTR:hybrid.siemens.com; CAT:NONE; SFS:(4636009)(46966006)(36840700001)(70206006)(336012)(86362001)(6666004)(1076003)(110136005)(47076005)(8936002)(16526019)(2906002)(186003)(956004)(26005)(36756003)(82960400001)(7416002)(36860700001)(70586007)(5660300002)(316002)(2616005)(44832011)(82310400004)(4326008)(83380400001)(8676002)(7596003)(7636003)(508600001)(356005)(54906003); DIR:OUT; SFP:1101; X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Dec 2021 12:05:13.8742 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b46b062e-0659-4330-d343-08d9be30d1ed X-MS-Exchange-CrossTenant-Id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=38ae3bcd-9579-4fd4-adda-b42e1495d55a; Ip=[194.138.21.70]; Helo=[hybrid.siemens.com] X-MS-Exchange-CrossTenant-AuthSource: DB5EUR01FT048.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR10MB2524 Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org This driver adds initial support for several devices from Siemens. It is based on a platform driver introduced in an earlier commit. One of the supported machines has GPIO connected LEDs, here we poke GPIO memory directly because pinctrl does not come up. Signed-off-by: Henning Schild Acked-by: Pavel Machek --- drivers/leds/Kconfig | 3 + drivers/leds/Makefile | 3 + drivers/leds/simple/Kconfig | 11 ++ drivers/leds/simple/Makefile | 2 + drivers/leds/simple/simatic-ipc-leds.c | 202 +++++++++++++++++++++++++ 5 files changed, 221 insertions(+) create mode 100644 drivers/leds/simple/Kconfig create mode 100644 drivers/leds/simple/Makefile create mode 100644 drivers/leds/simple/simatic-ipc-leds.c diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index ed800f5da7d8..ac6688d7a3f4 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -879,4 +879,7 @@ source "drivers/leds/flash/Kconfig" comment "LED Triggers" source "drivers/leds/trigger/Kconfig" +comment "Simple LED drivers" +source "drivers/leds/simple/Kconfig" + endif # NEW_LEDS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index c636ec069612..1a719caf14c0 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -105,3 +105,6 @@ obj-$(CONFIG_LEDS_TRIGGERS) += trigger/ # LED Blink obj-y += blink/ + +# Simple LED drivers +obj-y += simple/ diff --git a/drivers/leds/simple/Kconfig b/drivers/leds/simple/Kconfig new file mode 100644 index 000000000000..9f6a68336659 --- /dev/null +++ b/drivers/leds/simple/Kconfig @@ -0,0 +1,11 @@ +# SPDX-License-Identifier: GPL-2.0-only +config LEDS_SIEMENS_SIMATIC_IPC + tristate "LED driver for Siemens Simatic IPCs" + depends on LEDS_CLASS + depends on SIEMENS_SIMATIC_IPC + help + This option enables support for the LEDs of several Industrial PCs + from Siemens. + + To compile this driver as a module, choose M here: the module + will be called simatic-ipc-leds. diff --git a/drivers/leds/simple/Makefile b/drivers/leds/simple/Makefile new file mode 100644 index 000000000000..8481f1e9e360 --- /dev/null +++ b/drivers/leds/simple/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC) += simatic-ipc-leds.o diff --git a/drivers/leds/simple/simatic-ipc-leds.c b/drivers/leds/simple/simatic-ipc-leds.c new file mode 100644 index 000000000000..ff2c96e73241 --- /dev/null +++ b/drivers/leds/simple/simatic-ipc-leds.c @@ -0,0 +1,202 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Siemens SIMATIC IPC driver for LEDs + * + * Copyright (c) Siemens AG, 2018-2021 + * + * Authors: + * Henning Schild + * Jan Kiszka + * Gerd Haeussler + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define SIMATIC_IPC_LED_PORT_BASE 0x404E + +struct simatic_ipc_led { + unsigned int value; /* mask for io and offset for mem */ + char *name; + struct led_classdev cdev; +}; + +static struct simatic_ipc_led simatic_ipc_leds_io[] = { + {1 << 15, "green:" LED_FUNCTION_STATUS "-1" }, + {1 << 7, "yellow:" LED_FUNCTION_STATUS "-1" }, + {1 << 14, "red:" LED_FUNCTION_STATUS "-2" }, + {1 << 6, "yellow:" LED_FUNCTION_STATUS "-2" }, + {1 << 13, "red:" LED_FUNCTION_STATUS "-3" }, + {1 << 5, "yellow:" LED_FUNCTION_STATUS "-3" }, + { } +}; + +/* the actual start will be discovered with PCI, 0 is a placeholder */ +struct resource simatic_ipc_led_mem_res = DEFINE_RES_MEM_NAMED(0, SZ_4K, KBUILD_MODNAME); + +static void *simatic_ipc_led_memory; + +static struct simatic_ipc_led simatic_ipc_leds_mem[] = { + {0x500 + 0x1A0, "red:" LED_FUNCTION_STATUS "-1"}, + {0x500 + 0x1A8, "green:" LED_FUNCTION_STATUS "-1"}, + {0x500 + 0x1C8, "red:" LED_FUNCTION_STATUS "-2"}, + {0x500 + 0x1D0, "green:" LED_FUNCTION_STATUS "-2"}, + {0x500 + 0x1E0, "red:" LED_FUNCTION_STATUS "-3"}, + {0x500 + 0x198, "green:" LED_FUNCTION_STATUS "-3"}, + { } +}; + +static struct resource simatic_ipc_led_io_res = + DEFINE_RES_IO_NAMED(SIMATIC_IPC_LED_PORT_BASE, SZ_2, KBUILD_MODNAME); + +static DEFINE_SPINLOCK(reg_lock); + +static inline struct simatic_ipc_led *cdev_to_led(struct led_classdev *led_cd) +{ + return container_of(led_cd, struct simatic_ipc_led, cdev); +} + +static void simatic_ipc_led_set_io(struct led_classdev *led_cd, + enum led_brightness brightness) +{ + struct simatic_ipc_led *led = cdev_to_led(led_cd); + unsigned long flags; + unsigned int val; + + spin_lock_irqsave(®_lock, flags); + + val = inw(SIMATIC_IPC_LED_PORT_BASE); + if (brightness == LED_OFF) + outw(val | led->value, SIMATIC_IPC_LED_PORT_BASE); + else + outw(val & ~led->value, SIMATIC_IPC_LED_PORT_BASE); + + spin_unlock_irqrestore(®_lock, flags); +} + +static enum led_brightness simatic_ipc_led_get_io(struct led_classdev *led_cd) +{ + struct simatic_ipc_led *led = cdev_to_led(led_cd); + + return inw(SIMATIC_IPC_LED_PORT_BASE) & led->value ? LED_OFF : led_cd->max_brightness; +} + +static void simatic_ipc_led_set_mem(struct led_classdev *led_cd, + enum led_brightness brightness) +{ + struct simatic_ipc_led *led = cdev_to_led(led_cd); + + u32 *p; + + p = simatic_ipc_led_memory + led->value; + *p = (*p & ~1) | (brightness == LED_OFF); +} + +static enum led_brightness simatic_ipc_led_get_mem(struct led_classdev *led_cd) +{ + struct simatic_ipc_led *led = cdev_to_led(led_cd); + + u32 *p; + + p = simatic_ipc_led_memory + led->value; + return (*p & 1) ? LED_OFF : led_cd->max_brightness; +} + +static int simatic_ipc_leds_probe(struct platform_device *pdev) +{ + const struct simatic_ipc_platform *plat = pdev->dev.platform_data; + struct device *dev = &pdev->dev; + struct simatic_ipc_led *ipcled; + struct led_classdev *cdev; + struct resource *res; + int err, type; + u32 *p; + + switch (plat->devmode) { + case SIMATIC_IPC_DEVICE_227D: + case SIMATIC_IPC_DEVICE_427E: + res = &simatic_ipc_led_io_res; + ipcled = simatic_ipc_leds_io; + /* on 227D the two bytes work the other way araound */ + if (plat->devmode == SIMATIC_IPC_DEVICE_227D) { + while (ipcled->value) { + ipcled->value = swab16(ipcled->value); + ipcled++; + } + ipcled = simatic_ipc_leds_io; + } + type = IORESOURCE_IO; + if (!devm_request_region(dev, res->start, resource_size(res), KBUILD_MODNAME)) { + dev_err(dev, "Unable to register IO resource at %pR\n", res); + return -EBUSY; + } + break; + case SIMATIC_IPC_DEVICE_127E: + res = &simatic_ipc_led_mem_res; + ipcled = simatic_ipc_leds_mem; + type = IORESOURCE_MEM; + + /* get GPIO base from PCI */ + res->start = simatic_ipc_get_membase0(PCI_DEVFN(13, 0)); + if (res->start == 0) + return -ENODEV; + + /* do the final address calculation */ + res->start = res->start + (0xC5 << 16); + res->end += res->start; + + simatic_ipc_led_memory = devm_ioremap_resource(dev, res); + if (IS_ERR(simatic_ipc_led_memory)) + return PTR_ERR(simatic_ipc_led_memory); + + /* initialize power/watchdog LED */ + p = simatic_ipc_led_memory + 0x500 + 0x1D8; /* PM_WDT_OUT */ + *p = (*p & ~1); + p = simatic_ipc_led_memory + 0x500 + 0x1C0; /* PM_BIOS_BOOT_N */ + *p = (*p | 1); + + break; + default: + return -ENODEV; + } + + while (ipcled->value) { + cdev = &ipcled->cdev; + if (type == IORESOURCE_MEM) { + cdev->brightness_set = simatic_ipc_led_set_mem; + cdev->brightness_get = simatic_ipc_led_get_mem; + } else { + cdev->brightness_set = simatic_ipc_led_set_io; + cdev->brightness_get = simatic_ipc_led_get_io; + } + cdev->max_brightness = LED_ON; + cdev->name = ipcled->name; + + err = devm_led_classdev_register(dev, cdev); + if (err < 0) + return err; + ipcled++; + } + + return 0; +} + +static struct platform_driver simatic_ipc_led_driver = { + .probe = simatic_ipc_leds_probe, + .driver = { + .name = KBUILD_MODNAME, + } +}; + +module_platform_driver(simatic_ipc_led_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" KBUILD_MODNAME); +MODULE_AUTHOR("Henning Schild "); From patchwork Mon Dec 13 12:05:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henning Schild X-Patchwork-Id: 523834 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 B5994C4167D for ; Mon, 13 Dec 2021 12:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236510AbhLMMFc (ORCPT ); Mon, 13 Dec 2021 07:05:32 -0500 Received: from mail-eopbgr60063.outbound.protection.outlook.com ([40.107.6.63]:64578 "EHLO EUR04-DB3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S232762AbhLMMFR (ORCPT ); Mon, 13 Dec 2021 07:05:17 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=JdHp08Tl/OUUPgPYnga9rnP2Ab1jOUDa6o0L9kKFBvFfVXm/iH/wZ4Uqwxe0No5B5Cw4Lo9RiCkbRIc9Rb1tBKiijxAf5DAHlahBTZC0bJ0kQz7mpmwx2jeK8mlUnvaN7PxaqJs4TfV90I1BMq/odSwbYSoYgpvw4Rm48HBzOr8oDc/liPVuTCi0edoahtznuCd4AB3keciyRGGo7uEt9kworgClKjL8LR1wf12DO19Nek1oiIzAFoI4wwqYmmupUlhwA2Hc/9fzkUuCh+4Ok8oZRJWzT0F8xcZ372VuSnvOMtedYvLjCb9pE1DcE3ZlAkDZXhaM7umOURuEOVkMWw== 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=bpQ6fvDz9lVe6PiNcyGz6TuiPeWGlMMdUgY2zDKz72w=; b=ZOK14X5s5fvHcmqdlmx1tBhq2bl5CIf29AunYmNyDS61Kjug5Guw16Iu/zXSj2uU0YYnPgmBAlEnyrcwbWsSmNrqEMb8XOHi9GRkbgb4f4KfD9FcyqXzMQfm9ONU9e5FzqohiuMuqI4PcQAjSq/6cuz8eE2U1CtZnAOw9QpAs+CZVOsCv9LFd1MJ7qy+MOBuRasvekYD8AYPkO8S+lVEyCn6w3WAHd9Oi4rDNfAkMVm1SMDLXaekWqb8zm0gfCsJyJomRO7u0r2SyKHdQxrayzLVMGu7tupkEK3k+pKwmsiSKtcCjjcInLHG1J/8DqBTL6HHtjEb72DAdQzpkyzL2A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 194.138.21.73) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=siemens.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=siemens.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=siemens.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=bpQ6fvDz9lVe6PiNcyGz6TuiPeWGlMMdUgY2zDKz72w=; b=xqmcSppORVXO+qaJPryses24jIyyZyIjoOjO5JA1rd7Zjr+5Z69jVCkSIUH4TUPC0DxsefA9qZJckMH2FOXgpsfdE7GxoOSCGvN2u7d2rWqW22jn+Q3bzpKzLBzc9+jyGyTtR8E5tdZU9cfJqhVrDzH0I6eC2NzziVQjx5J5wt+gnAPMNzNEquAiDU97Fas2qTlF2bE/+xZ+kSrbKrVMHnpnlgQd2RcajhTdsFk+SEa8V9Yfp86F2HHPdAYdXvqSxpTx+ap9k077vFdzCaMShS5wdwQdWgCVprRZVd8sxov1u5r/5F/egHBr8jli/mu4nvsuVMRf9MR5KloFpWEShw== Received: from OL1P279CA0038.NORP279.PROD.OUTLOOK.COM (2603:10a6:e10:14::7) by VI1PR10MB1552.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:802:31::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4755.21; Mon, 13 Dec 2021 12:05:14 +0000 Received: from HE1EUR01FT018.eop-EUR01.prod.protection.outlook.com (2603:10a6:e10:14:cafe::7a) by OL1P279CA0038.outlook.office365.com (2603:10a6:e10:14::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4778.17 via Frontend Transport; Mon, 13 Dec 2021 12:05:14 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 194.138.21.73) smtp.mailfrom=siemens.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=siemens.com; Received-SPF: Pass (protection.outlook.com: domain of siemens.com designates 194.138.21.73 as permitted sender) receiver=protection.outlook.com; client-ip=194.138.21.73; helo=hybrid.siemens.com; Received: from hybrid.siemens.com (194.138.21.73) by HE1EUR01FT018.mail.protection.outlook.com (10.152.0.175) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4778.12 via Frontend Transport; Mon, 13 Dec 2021 12:05:14 +0000 Received: from DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) by DEMCHDC9SNA.ad011.siemens.net (194.138.21.73) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 13 Dec 2021 13:05:13 +0100 Received: from md1za8fc.ad001.siemens.net (139.25.69.80) by DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 13 Dec 2021 13:05:13 +0100 From: Henning Schild To: , , , CC: Srikanth Krishnakar , Jan Kiszka , Henning Schild , "Gerd Haeussler" , Guenter Roeck , Wim Van Sebroeck , Mark Gross , Hans de Goede , Pavel Machek , Andy Shevchenko , Enrico Weigelt Subject: [PATCH v5 3/4] watchdog: simatic-ipc-wdt: add new driver for Siemens Industrial PCs Date: Mon, 13 Dec 2021 13:05:01 +0100 Message-ID: <20211213120502.20661-4-henning.schild@siemens.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211213120502.20661-1-henning.schild@siemens.com> References: <20211213120502.20661-1-henning.schild@siemens.com> MIME-Version: 1.0 X-Originating-IP: [139.25.69.80] X-ClientProxiedBy: DEMCHDC89YA.ad011.siemens.net (139.25.226.104) To DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2eb814d9-7688-43d1-dbfb-08d9be30d220 X-MS-TrafficTypeDiagnostic: VI1PR10MB1552:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1417; 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:194.138.21.73; CTRY:DE; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:hybrid.siemens.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(4636009)(46966006)(36840700001)(81166007)(186003)(16526019)(8936002)(4326008)(8676002)(26005)(956004)(44832011)(316002)(5660300002)(82310400004)(82960400001)(47076005)(2616005)(2906002)(70586007)(356005)(336012)(508600001)(70206006)(7416002)(83380400001)(86362001)(1076003)(6666004)(110136005)(54906003)(36756003)(36860700001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Dec 2021 12:05:14.1931 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2eb814d9-7688-43d1-dbfb-08d9be30d220 X-MS-Exchange-CrossTenant-Id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=38ae3bcd-9579-4fd4-adda-b42e1495d55a; Ip=[194.138.21.73]; Helo=[hybrid.siemens.com] X-MS-Exchange-CrossTenant-AuthSource: HE1EUR01FT018.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR10MB1552 Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org This driver adds initial support for several devices from Siemens. It is based on a platform driver introduced in an earlier commit. One of the supported machines does access a GPIO pin to enable the watchdog. Here we poke GPIO memory because pinctrl does not come up. Signed-off-by: Henning Schild Reviewed-by: Guenter Roeck --- drivers/watchdog/Kconfig | 11 ++ drivers/watchdog/Makefile | 1 + drivers/watchdog/simatic-ipc-wdt.c | 228 +++++++++++++++++++++++++++++ 3 files changed, 240 insertions(+) create mode 100644 drivers/watchdog/simatic-ipc-wdt.c diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 9d222ba17ec6..1dc86eb1361a 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -1589,6 +1589,17 @@ config NIC7018_WDT To compile this driver as a module, choose M here: the module will be called nic7018_wdt. +config SIEMENS_SIMATIC_IPC_WDT + tristate "Siemens Simatic IPC Watchdog" + depends on SIEMENS_SIMATIC_IPC + select WATCHDOG_CORE + help + This driver adds support for several watchdogs found in Industrial + PCs from Siemens. + + To compile this driver as a module, choose M here: the module will be + called simatic-ipc-wdt. + # M68K Architecture config M54xx_WATCHDOG diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index 2ee97064145b..31b931846e32 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -143,6 +143,7 @@ obj-$(CONFIG_NI903X_WDT) += ni903x_wdt.o obj-$(CONFIG_NIC7018_WDT) += nic7018_wdt.o obj-$(CONFIG_MLX_WDT) += mlx_wdt.o obj-$(CONFIG_KEEMBAY_WATCHDOG) += keembay_wdt.o +obj-$(CONFIG_SIEMENS_SIMATIC_IPC_WDT) += simatic-ipc-wdt.o # M68K Architecture obj-$(CONFIG_M54xx_WATCHDOG) += m54xx_wdt.o diff --git a/drivers/watchdog/simatic-ipc-wdt.c b/drivers/watchdog/simatic-ipc-wdt.c new file mode 100644 index 000000000000..8bac793c63fb --- /dev/null +++ b/drivers/watchdog/simatic-ipc-wdt.c @@ -0,0 +1,228 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Siemens SIMATIC IPC driver for Watchdogs + * + * Copyright (c) Siemens AG, 2020-2021 + * + * Authors: + * Gerd Haeussler + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define WD_ENABLE_IOADR 0x62 +#define WD_TRIGGER_IOADR 0x66 +#define GPIO_COMMUNITY0_PORT_ID 0xaf +#define PAD_CFG_DW0_GPP_A_23 0x4b8 +#define SAFE_EN_N_427E 0x01 +#define SAFE_EN_N_227E 0x04 +#define WD_ENABLED 0x01 +#define WD_TRIGGERED 0x80 +#define WD_MACROMODE 0x02 + +#define TIMEOUT_MIN 2 +#define TIMEOUT_DEF 64 +#define TIMEOUT_MAX 64 + +#define GP_STATUS_REG_227E 0x404D /* IO PORT for SAFE_EN_N on 227E */ + +static bool nowayout = WATCHDOG_NOWAYOUT; +module_param(nowayout, bool, 0000); +MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" + __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); + +static struct resource gp_status_reg_227e_res = + DEFINE_RES_IO_NAMED(GP_STATUS_REG_227E, SZ_1, KBUILD_MODNAME); + +static struct resource io_resource_enable = + DEFINE_RES_IO_NAMED(WD_ENABLE_IOADR, SZ_1, + KBUILD_MODNAME " WD_ENABLE_IOADR"); + +static struct resource io_resource_trigger = + DEFINE_RES_IO_NAMED(WD_TRIGGER_IOADR, SZ_1, + KBUILD_MODNAME " WD_TRIGGER_IOADR"); + +/* the actual start will be discovered with pci, 0 is a placeholder */ +static struct resource mem_resource = + DEFINE_RES_MEM_NAMED(0, SZ_4, "WD_RESET_BASE_ADR"); + +static u32 wd_timeout_table[] = {2, 4, 6, 8, 16, 32, 48, 64 }; +static void __iomem *wd_reset_base_addr; + +static int wd_start(struct watchdog_device *wdd) +{ + outb(inb(WD_ENABLE_IOADR) | WD_ENABLED, WD_ENABLE_IOADR); + return 0; +} + +static int wd_stop(struct watchdog_device *wdd) +{ + outb(inb(WD_ENABLE_IOADR) & ~WD_ENABLED, WD_ENABLE_IOADR); + return 0; +} + +static int wd_ping(struct watchdog_device *wdd) +{ + inb(WD_TRIGGER_IOADR); + return 0; +} + +static int wd_set_timeout(struct watchdog_device *wdd, unsigned int t) +{ + int timeout_idx = find_closest(t, wd_timeout_table, + ARRAY_SIZE(wd_timeout_table)); + + outb((inb(WD_ENABLE_IOADR) & 0xc7) | timeout_idx << 3, WD_ENABLE_IOADR); + wdd->timeout = wd_timeout_table[timeout_idx]; + return 0; +} + +static const struct watchdog_info wdt_ident = { + .options = WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING | + WDIOF_SETTIMEOUT, + .identity = KBUILD_MODNAME, +}; + +static const struct watchdog_ops wdt_ops = { + .owner = THIS_MODULE, + .start = wd_start, + .stop = wd_stop, + .ping = wd_ping, + .set_timeout = wd_set_timeout, +}; + +static void wd_secondary_enable(u32 wdtmode) +{ + u16 resetbit; + + /* set safe_en_n so we are not just WDIOF_ALARMONLY */ + if (wdtmode == SIMATIC_IPC_DEVICE_227E) { + /* enable SAFE_EN_N on GP_STATUS_REG_227E */ + resetbit = inb(GP_STATUS_REG_227E); + outb(resetbit & ~SAFE_EN_N_227E, GP_STATUS_REG_227E); + } else { + /* enable SAFE_EN_N on PCH D1600 */ + resetbit = ioread16(wd_reset_base_addr); + iowrite16(resetbit & ~SAFE_EN_N_427E, wd_reset_base_addr); + } +} + +static int wd_setup(u32 wdtmode) +{ + unsigned int bootstatus = 0; + int timeout_idx; + + timeout_idx = find_closest(TIMEOUT_DEF, wd_timeout_table, + ARRAY_SIZE(wd_timeout_table)); + + if (inb(WD_ENABLE_IOADR) & WD_TRIGGERED) + bootstatus |= WDIOF_CARDRESET; + + /* reset alarm bit, set macro mode, and set timeout */ + outb(WD_TRIGGERED | WD_MACROMODE | timeout_idx << 3, WD_ENABLE_IOADR); + + wd_secondary_enable(wdtmode); + + return bootstatus; +} + +static struct watchdog_device wdd_data = { + .info = &wdt_ident, + .ops = &wdt_ops, + .min_timeout = TIMEOUT_MIN, + .max_timeout = TIMEOUT_MAX +}; + +static int simatic_ipc_wdt_probe(struct platform_device *pdev) +{ + struct simatic_ipc_platform *plat = pdev->dev.platform_data; + struct device *dev = &pdev->dev; + struct resource *res; + + switch (plat->devmode) { + case SIMATIC_IPC_DEVICE_227E: + if (!devm_request_region(dev, gp_status_reg_227e_res.start, + resource_size(&gp_status_reg_227e_res), + KBUILD_MODNAME)) { + dev_err(dev, + "Unable to register IO resource at %pR\n", + &gp_status_reg_227e_res); + return -EBUSY; + } + fallthrough; + case SIMATIC_IPC_DEVICE_427E: + wdd_data.parent = dev; + break; + default: + return -EINVAL; + } + + if (!devm_request_region(dev, io_resource_enable.start, + resource_size(&io_resource_enable), + io_resource_enable.name)) { + dev_err(dev, + "Unable to register IO resource at %#x\n", + WD_ENABLE_IOADR); + return -EBUSY; + } + + if (!devm_request_region(dev, io_resource_trigger.start, + resource_size(&io_resource_trigger), + io_resource_trigger.name)) { + dev_err(dev, + "Unable to register IO resource at %#x\n", + WD_TRIGGER_IOADR); + return -EBUSY; + } + + if (plat->devmode == SIMATIC_IPC_DEVICE_427E) { + res = &mem_resource; + + /* get GPIO base from PCI */ + res->start = simatic_ipc_get_membase0(PCI_DEVFN(0x1f, 1)); + if (res->start == 0) + return -ENODEV; + + /* do the final address calculation */ + res->start = res->start + (GPIO_COMMUNITY0_PORT_ID << 16) + + PAD_CFG_DW0_GPP_A_23; + res->end += res->start; + + wd_reset_base_addr = devm_ioremap_resource(dev, res); + if (IS_ERR(wd_reset_base_addr)) + return PTR_ERR(wd_reset_base_addr); + } + + wdd_data.bootstatus = wd_setup(plat->devmode); + if (wdd_data.bootstatus) + dev_warn(dev, "last reboot caused by watchdog reset\n"); + + watchdog_set_nowayout(&wdd_data, nowayout); + watchdog_stop_on_reboot(&wdd_data); + return devm_watchdog_register_device(dev, &wdd_data); +} + +static struct platform_driver simatic_ipc_wdt_driver = { + .probe = simatic_ipc_wdt_probe, + .driver = { + .name = KBUILD_MODNAME, + }, +}; + +module_platform_driver(simatic_ipc_wdt_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" KBUILD_MODNAME); +MODULE_AUTHOR("Gerd Haeussler "); From patchwork Mon Dec 13 12:05:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henning Schild X-Patchwork-Id: 523557 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 BDC31C433FE for ; Mon, 13 Dec 2021 12:05:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229618AbhLMMFT (ORCPT ); Mon, 13 Dec 2021 07:05:19 -0500 Received: from mail-eopbgr60077.outbound.protection.outlook.com ([40.107.6.77]:35308 "EHLO EUR04-DB3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231585AbhLMMFQ (ORCPT ); Mon, 13 Dec 2021 07:05:16 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ktEu+kj3OM22b99O2mgZ8WV3rL8Z/olQhF3mxtzSEUQtLlfBYvLNyq5raGx/5PywGCMyWx8JPphae0RUiRsMVkL+tD0hK5ZDxJgm3ef8Qu8NJTCYWLKI/st5g9oKepy/SrrIEue1TWxwdVwa/CY+AnGnHx0t4pLGN3aIWtPvq47BlxpEhKnJrKpfrgRjNc0jiLnn7Sn79D7VnW83C5/+KRBtciBxGDvG6B8kd4GKMO3aJJMVed3aGE/geF8irNskkIdEJcxFb7w5DN0LvcnLTxSGLh4329JEnBJOwYfakXdbmYViUU9blXAqUGis/ACtN1tXjNNmU4J7uQqGrokauA== 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=/MMImjCflvRWW0qQ8q9+2d2EpYqtxf/o51w1lYHVRW0=; b=bTEMiZzFKhVRq7cq+goYaQDBmVSUPWTDGqCt4FBngXsKSDPLj3DfCmHLiczCQEk1ZqXB4s/s/OTypnm8tRWTXjEjXdn+7Vm/aursr4gh67uZ53ouRaH//j1pdj/zvhkz3wEu3UTAIun7uBxJNTUZidM+YaCWwdZ0YdjnPaepbcp3mXptQV7t8wP+OV5X6Cyr+B9ZS+KG7ET6vioinoFUP76yE0mhuE98L2gw6yHjBLCvP8dHHHgGgpHIcO2WEPk9af0nFk6EIxXAApbCpCkEIgTAEs4DbAQvIpFMHvuHiORvtYAuR6Pn53Tcm0v8S8R0MWUHv4bhHTlGmR3h/e5mGg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 194.138.21.72) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=siemens.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=siemens.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=siemens.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=/MMImjCflvRWW0qQ8q9+2d2EpYqtxf/o51w1lYHVRW0=; b=Y++kqUBXQVSPlFpR73RUbWWGfTXAqN//DzuMSpOXtrwQ67GzSf5KVZBcKLDqYmA0KPJOb9eIVVznw9ep625aDrYJnRcK7yYs6fPVCwGzvOh9EFf9uwh73os/u+HntfkCnOK+FGPRfo47QTQ/rQE/p2oRL5yTDl4MRiOBqmudIFVZDrfkCElEoKvj38BfWfLkl7h0A61+Y+9hQ0oddD3c8sbzqdux40R3RE53G5y/tIr/WcvvLLdF1nzNHx46dmwjuaWY7jDKjc/nj4Im4bvAxYTpKz7bjiOcKnoTWi6MDGBUM/3E/W+ZcVrBorNndGWr7e/76ZAKybSO9BuGW4tY1Q== Received: from DB6PR0501CA0046.eurprd05.prod.outlook.com (2603:10a6:4:67::32) by DB9PR10MB5233.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:10:33e::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4778.17; Mon, 13 Dec 2021 12:05:14 +0000 Received: from DB5EUR01FT043.eop-EUR01.prod.protection.outlook.com (2603:10a6:4:67:cafe::44) by DB6PR0501CA0046.outlook.office365.com (2603:10a6:4:67::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4778.11 via Frontend Transport; Mon, 13 Dec 2021 12:05:14 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 194.138.21.72) smtp.mailfrom=siemens.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=siemens.com; Received-SPF: Pass (protection.outlook.com: domain of siemens.com designates 194.138.21.72 as permitted sender) receiver=protection.outlook.com; client-ip=194.138.21.72; helo=hybrid.siemens.com; Received: from hybrid.siemens.com (194.138.21.72) by DB5EUR01FT043.mail.protection.outlook.com (10.152.5.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4778.12 via Frontend Transport; Mon, 13 Dec 2021 12:05:14 +0000 Received: from DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) by DEMCHDC9SMA.ad011.siemens.net (194.138.21.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 13 Dec 2021 13:05:13 +0100 Received: from md1za8fc.ad001.siemens.net (139.25.69.80) by DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 13 Dec 2021 13:05:13 +0100 From: Henning Schild To: , , , CC: Srikanth Krishnakar , Jan Kiszka , Henning Schild , "Gerd Haeussler" , Guenter Roeck , Wim Van Sebroeck , Mark Gross , Hans de Goede , Pavel Machek , Andy Shevchenko , Enrico Weigelt , Michael Haener Subject: [PATCH v5 4/4] platform/x86: pmc_atom: improve critclk_systems matching for Siemens PCs Date: Mon, 13 Dec 2021 13:05:02 +0100 Message-ID: <20211213120502.20661-5-henning.schild@siemens.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211213120502.20661-1-henning.schild@siemens.com> References: <20211213120502.20661-1-henning.schild@siemens.com> MIME-Version: 1.0 X-Originating-IP: [139.25.69.80] X-ClientProxiedBy: DEMCHDC89YA.ad011.siemens.net (139.25.226.104) To DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: e4888c9a-a9be-4f8a-abd6-08d9be30d22c X-MS-TrafficTypeDiagnostic: DB9PR10MB5233:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:159; 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:194.138.21.72; CTRY:DE; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:hybrid.siemens.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(4636009)(46966006)(36840700001)(1076003)(36756003)(26005)(316002)(82960400001)(8676002)(336012)(956004)(186003)(508600001)(8936002)(16526019)(4326008)(54906003)(107886003)(44832011)(6666004)(70586007)(82310400004)(70206006)(110136005)(81166007)(5660300002)(47076005)(2616005)(36860700001)(7416002)(86362001)(2906002)(83380400001)(356005)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Dec 2021 12:05:14.2782 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e4888c9a-a9be-4f8a-abd6-08d9be30d22c X-MS-Exchange-CrossTenant-Id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=38ae3bcd-9579-4fd4-adda-b42e1495d55a; Ip=[194.138.21.72]; Helo=[hybrid.siemens.com] X-MS-Exchange-CrossTenant-AuthSource: DB5EUR01FT043.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR10MB5233 Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Siemens industrial PCs unfortunately can not always be properly identified the way we used to. An earlier commit introduced code that allows proper identification without looking at DMI strings that could differ based on product branding. Switch over to that proper way and revert commits that used to collect the machines based on unstable strings. Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL") Fixes: e8796c6c69d1 ("platform/x86: pmc_atom: Add Siemens CONNECT ...") Fixes: f110d252ae79 ("platform/x86: pmc_atom: Add Siemens SIMATIC ...") Fixes: ad0d315b4d4e ("platform/x86: pmc_atom: Add Siemens SIMATIC ...") Tested-by: Michael Haener Signed-off-by: Henning Schild --- drivers/platform/x86/pmc_atom.c | 54 ++++++++++++++++++++------------- 1 file changed, 33 insertions(+), 21 deletions(-) diff --git a/drivers/platform/x86/pmc_atom.c b/drivers/platform/x86/pmc_atom.c index a9d2a4b98e57..a40fae6edc84 100644 --- a/drivers/platform/x86/pmc_atom.c +++ b/drivers/platform/x86/pmc_atom.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -362,6 +363,30 @@ static void pmc_dbgfs_register(struct pmc_dev *pmc) } #endif /* CONFIG_DEBUG_FS */ +static bool pmc_clk_is_critical = true; + +static int dmi_callback(const struct dmi_system_id *d) +{ + pr_info("%s critclks quirk enabled\n", d->ident); + + return 1; +} + +static int dmi_callback_siemens(const struct dmi_system_id *d) +{ + u32 st_id; + + if (dmi_walk(simatic_ipc_find_dmi_entry_helper, &st_id)) + goto out; + + if (st_id == SIMATIC_IPC_IPC227E || st_id == SIMATIC_IPC_IPC277E) + return dmi_callback(d); + +out: + pmc_clk_is_critical = false; + return 1; +} + /* * Some systems need one or more of their pmc_plt_clks to be * marked as critical. @@ -370,6 +395,7 @@ static const struct dmi_system_id critclk_systems[] = { { /* pmc_plt_clk0 is used for an external HSIC USB HUB */ .ident = "MPL CEC1x", + .callback = dmi_callback, .matches = { DMI_MATCH(DMI_SYS_VENDOR, "MPL AG"), DMI_MATCH(DMI_PRODUCT_NAME, "CEC10 Family"), @@ -378,6 +404,7 @@ static const struct dmi_system_id critclk_systems[] = { { /* pmc_plt_clk0 - 3 are used for the 4 ethernet controllers */ .ident = "Lex 3I380D", + .callback = dmi_callback, .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Lex BayTrail"), DMI_MATCH(DMI_PRODUCT_NAME, "3I380D"), @@ -386,6 +413,7 @@ static const struct dmi_system_id critclk_systems[] = { { /* pmc_plt_clk* - are used for ethernet controllers */ .ident = "Lex 2I385SW", + .callback = dmi_callback, .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Lex BayTrail"), DMI_MATCH(DMI_PRODUCT_NAME, "2I385SW"), @@ -394,30 +422,17 @@ static const struct dmi_system_id critclk_systems[] = { { /* pmc_plt_clk* - are used for ethernet controllers */ .ident = "Beckhoff Baytrail", + .callback = dmi_callback, .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Beckhoff Automation"), DMI_MATCH(DMI_PRODUCT_FAMILY, "CBxx63"), }, }, { - .ident = "SIMATIC IPC227E", + .ident = "SIEMENS AG", + .callback = dmi_callback_siemens, .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"), - DMI_MATCH(DMI_PRODUCT_VERSION, "6ES7647-8B"), - }, - }, - { - .ident = "SIMATIC IPC277E", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"), - DMI_MATCH(DMI_PRODUCT_VERSION, "6AV7882-0"), - }, - }, - { - .ident = "CONNECT X300", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"), - DMI_MATCH(DMI_PRODUCT_VERSION, "A5E45074588"), }, }, @@ -429,7 +444,6 @@ static int pmc_setup_clks(struct pci_dev *pdev, void __iomem *pmc_regmap, { struct platform_device *clkdev; struct pmc_clk_data *clk_data; - const struct dmi_system_id *d = dmi_first_match(critclk_systems); clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL); if (!clk_data) @@ -437,10 +451,8 @@ static int pmc_setup_clks(struct pci_dev *pdev, void __iomem *pmc_regmap, clk_data->base = pmc_regmap; /* offset is added by client */ clk_data->clks = pmc_data->clks; - if (d) { - clk_data->critical = true; - pr_info("%s critclks quirk enabled\n", d->ident); - } + if (dmi_check_system(critclk_systems)) + clk_data->critical = pmc_clk_is_critical; clkdev = platform_device_register_data(&pdev->dev, "clk-pmc-atom", PLATFORM_DEVID_NONE,