{"id":2220801,"url":"http://patchwork.ozlabs.org/api/1.1/covers/2220801/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/cover/20260408053037.1867092-1-a0282524688@gmail.com/","project":{"id":42,"url":"http://patchwork.ozlabs.org/api/1.1/projects/42/?format=json","name":"Linux GPIO development","link_name":"linux-gpio","list_id":"linux-gpio.vger.kernel.org","list_email":"linux-gpio@vger.kernel.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260408053037.1867092-1-a0282524688@gmail.com>","date":"2026-04-08T05:30:35","name":"[v2,0/2] mfd: nct6694: Refactor transport layer and add HIF (eSPI) support","submitter":{"id":89578,"url":"http://patchwork.ozlabs.org/api/1.1/people/89578/?format=json","name":"Ming Yu","email":"a0282524688@gmail.com"},"mbox":"http://patchwork.ozlabs.org/project/linux-gpio/cover/20260408053037.1867092-1-a0282524688@gmail.com/mbox/","series":[{"id":499070,"url":"http://patchwork.ozlabs.org/api/1.1/series/499070/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-gpio/list/?series=499070","date":"2026-04-08T05:30:35","name":"mfd: nct6694: Refactor transport layer and add HIF (eSPI) support","version":2,"mbox":"http://patchwork.ozlabs.org/series/499070/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2220801/comments/","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-gpio@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=V8ZWPWMq;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=linux-gpio+bounces-34860-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"V8ZWPWMq\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=209.85.214.173","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com"],"Received":["from sea.lore.kernel.org (sea.lore.kernel.org\n [IPv6:2600:3c0a:e001:db::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4frBW1682Fz1xtJ\n\tfor ; Wed, 08 Apr 2026 15:31:09 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id 10D40301AF48\n\tfor ; Wed, 8 Apr 2026 05:30:59 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 83F8035A933;\n\tWed, 8 Apr 2026 05:30:57 +0000 (UTC)","from mail-pl1-f173.google.com (mail-pl1-f173.google.com\n [209.85.214.173])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id CDCFC3148A8\n\tfor ; Wed, 8 Apr 2026 05:30:55 +0000 (UTC)","by mail-pl1-f173.google.com with SMTP id\n d9443c01a7336-2b2429f98d0so37812355ad.2\n for ;\n Tue, 07 Apr 2026 22:30:55 -0700 (PDT)","from hcdev-d520mt2.. 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Currently, the\ndriver only supports USB as the host transport interface.\n\nThis series refactors the NCT6694 MFD core to support multiple transport\nbackends and adds a new Host Interface (HIF) transport driver that\ncommunicates over eSPI using Super-I/O shared memory.\n\nChanges since version 1:\n- Reworked the Super-I/O access helpers.\n\nMing Yu (2):\n mfd: nct6694: Switch to devm_mfd_add_devices() and drop IDA\n mfd: Add Host Interface (HIF) support for Nuvoton NCT6694\n\n MAINTAINERS | 1 +\n drivers/gpio/gpio-nct6694.c | 26 +-\n drivers/hwmon/nct6694-hwmon.c | 21 -\n drivers/i2c/busses/i2c-nct6694.c | 26 +-\n drivers/mfd/Kconfig | 47 ++-\n drivers/mfd/Makefile | 3 +-\n drivers/mfd/nct6694-hif.c | 634 ++++++++++++++++++++++++++++\n drivers/mfd/nct6694.c | 180 ++++----\n drivers/net/can/usb/nct6694_canfd.c | 18 +-\n drivers/rtc/rtc-nct6694.c | 7 -\n drivers/watchdog/nct6694_wdt.c | 27 +-\n include/linux/mfd/nct6694.h | 57 ++-\n 12 files changed, 814 insertions(+), 233 deletions(-)\n create mode 100644 drivers/mfd/nct6694-hif.c"}