From patchwork Mon Feb 22 13:07:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Scally X-Patchwork-Id: 385942 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D04BC433E6 for ; Mon, 22 Feb 2021 13:10:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CA0FF64E84 for ; Mon, 22 Feb 2021 13:10:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231836AbhBVNKS (ORCPT ); Mon, 22 Feb 2021 08:10:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41436 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230370AbhBVNIb (ORCPT ); Mon, 22 Feb 2021 08:08:31 -0500 Received: from mail-wr1-x436.google.com (mail-wr1-x436.google.com [IPv6:2a00:1450:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AD1E4C061574; Mon, 22 Feb 2021 05:07:50 -0800 (PST) Received: by mail-wr1-x436.google.com with SMTP id n8so18966316wrm.10; Mon, 22 Feb 2021 05:07:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=stoI6eMvRjtFHS9Ho0CArAefJgOQJyQUHAhNv0n6e4E=; b=Gf0Viy3DbSfkz1pJqcezIWfnDzVD4oqxxMCiR/sjGI8+EXHYz8JEJYcZQy0Vf4RrLa s+lJdvZNDqwColLKAPfYPUHjIkaMyEi4GkVBSVQJkrON+zOgsvwtZhCkm/xKuEXPg3N3 iUI20+CQGkwf9VpK3F2QxfmbGCNJcDBqb29nDRGdcZXqHseOMCCHu8SA5BKaile1JzvG HpXpuWyk9qmQSw9ihyizw6vawle+zhieP3ObpKq7TzmJ4STiDmsUbuno0hc6/HeHwYpM rsa+y/TrgSln63LhkFa13g/+K+s2M/U5j9vUmr1ITd4El5MiVJxm0suPZw8Bv5hLaDcQ Z8jw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=stoI6eMvRjtFHS9Ho0CArAefJgOQJyQUHAhNv0n6e4E=; b=CW7EytFexEyt/FwEvF6Ho6rAf/f40OoJxl71kjx03/Xor+ndAL6qDe3UyUi6lsiMQ8 sr/zSKaJXQnBUkQMayq0HUmFsH4RkUqgC40GR8/poHX9k7kqxI4myzyFZluS2gSF5B9H 7ha0y2STJ3esEsDG/66nVEcPwCUhHnPhUu4sKo1WDqGyeMxC4DWf6C/Fn2gBIx2RLiqQ 8sml7S2XNWVwdONDuouDa3Ig/jh333vxqScxQvdc7VmpedCBDZ/sCIvmezJwaCOPdqTG jzDVQWf77htFbFen/N4lv3G3lK1PvLFZlL/A2GD8/zUH1pgHROxM/02lPKcMa0bQE/wi kxuA== X-Gm-Message-State: AOAM532AHiLTDqFj2p8gTmuLqxNcBeFEdNm5FvFDSV1UPGs/Kg5AZzDG RezY1Gvb27FJKQiIGytRfyI= X-Google-Smtp-Source: ABdhPJySRppn9M08YPD6sZO7+VPk6b7fWJ9jG7po/pvuPyLHctU4YqYih2P2Bk1oWchInca3Ohs/Zg== X-Received: by 2002:adf:fdd0:: with SMTP id i16mr21304628wrs.215.1613999269481; Mon, 22 Feb 2021 05:07:49 -0800 (PST) Received: from valhalla.home ([2.31.224.123]) by smtp.gmail.com with ESMTPSA id t198sm26575828wmt.7.2021.02.22.05.07.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Feb 2021 05:07:49 -0800 (PST) From: Daniel Scally To: tfiga@chromium.org, sakari.ailus@linux.intel.com, rajmohan.mani@intel.com, rjw@rjwysocki.net, lenb@kernel.org, mika.westerberg@linux.intel.com, linus.walleij@linaro.org, bgolaszewski@baylibre.com, wsa@kernel.org, lee.jones@linaro.org Cc: andy.shevchenko@linux.intel.com, kieran.bingham+renesas@ideasonboard.com, laurent.pinchart@ideasonboard.com, hdegoede@redhat.com, mgross@linux.intel.com, luzmaximilian@gmail.com, robert.moore@intel.com, erik.kaneda@intel.com, me@fabwu.ch, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org, platform-driver-x86@vger.kernel.org, devel@acpica.org Subject: [PATCH v3 0/6] Introduce intel_skl_int3472 module Date: Mon, 22 Feb 2021 13:07:29 +0000 Message-Id: <20210222130735.1313443-1-djrscally@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org v1 for this series was originally 14-18 of this series: https://lore.kernel.org/linux-media/20201130133129.1024662-1-djrscally@gmail.com/T/#m91934e12e3d033da2e768e952ea3b4a125ee3e67 v2 was here: https://lore.kernel.org/platform-driver-x86/20210118003428.568892-1-djrscally@gmail.com/ Series level changelog: - Dropped the patch moving acpi_lpss_dep() to utils since it's not used in acpi_dev_get_dependent_dev() anymore. - Replaced it with a patch extending acpi_walk_dep_device_list() to be able to apply a given callback against each device in acpi_dep_list - Dropped the patch creating acpi_i2c_dev_name() and simply open coded that functionality. This has been tested on a number of devices, but currently **not** on a device designed for ChromeOS, which we ideally need to do to ensure no regression caused by replacing the tps68470 MFD driver. Sakari / Tomasz, is there any way you could help with that? Unfortunately, I don't have a device to test it on myself. Original cover letter: At the moment in the kernel the ACPI _HID INT3472 is taken by the tps68470 MFD driver, but that driver can only handle some of the cases of that _HID that we see. There are at least these three possibilities: 1. INT3472 devices that provide GPIOs through the usual framework and run power and clocks through an operation region; this is the situation that the current module handles and is seen on ChromeOS devices 2. INT3472 devices that provide GPIOs, plus clocks and regulators that are meant to be driven through the usual frameworks, usually seen on devices designed to run Windows 3. INT3472 devices that don't actually represent a physical tps68470, but are being used as a convenient way of grouping a bunch of system GPIO lines that are intended to enable power and clocks for sensors which are called out as dependent on them. Also seen on devices designed to run Windows. This series introduces a new module which registers: 1. An i2c driver that determines which scenario (#1 or #2) applies to the machine and registers platform devices to be bound to GPIO, OpRegion, clock and regulator drivers as appropriate. 2. A platform driver that binds to the dummy INT3472 devices described in #3 The platform driver for the dummy device registers the GPIO lines that enable the clocks and regulators to the sensors via those frameworks so that sensor drivers can consume them in the usual fashion. The existing GPIO and OpRegion tps68470 drivers will work with the i2c driver that's registered. Clock and regulator drivers are available but have not so far been tested, so aren't part of this series. The existing mfd/tps68470.c driver being thus superseded, it is removed. Thanks Dan Daniel Scally (6): ACPI: scan: Extend acpi_walk_dep_device_list() ACPI: scan: Add function to fetch dependent of acpi device i2c: core: Add a format macro for I2C device names gpiolib: acpi: Export acpi_get_gpiod() platform/x86: Add intel_skl_int3472 driver mfd: tps68470: Remove tps68470 MFD driver MAINTAINERS | 5 + drivers/acpi/ec.c | 2 +- drivers/acpi/pmic/Kconfig | 2 +- drivers/acpi/pmic/intel_pmic_chtdc_ti.c | 2 +- drivers/acpi/scan.c | 92 ++- drivers/gpio/Kconfig | 2 +- drivers/gpio/gpiolib-acpi.c | 38 +- drivers/i2c/i2c-core-acpi.c | 2 +- drivers/i2c/i2c-core-base.c | 4 +- drivers/mfd/Kconfig | 18 - drivers/mfd/Makefile | 1 - drivers/mfd/tps68470.c | 97 --- drivers/platform/surface/surface3_power.c | 2 +- drivers/platform/x86/Kconfig | 2 + drivers/platform/x86/Makefile | 1 + drivers/platform/x86/intel-int3472/Kconfig | 31 + drivers/platform/x86/intel-int3472/Makefile | 4 + .../intel-int3472/intel_skl_int3472_common.c | 106 ++++ .../intel-int3472/intel_skl_int3472_common.h | 110 ++++ .../intel_skl_int3472_discrete.c | 592 ++++++++++++++++++ .../intel_skl_int3472_tps68470.c | 113 ++++ include/acpi/acpi_bus.h | 8 + include/linux/acpi.h | 4 +- include/linux/gpio/consumer.h | 7 + include/linux/i2c.h | 3 + 25 files changed, 1100 insertions(+), 148 deletions(-) delete mode 100644 drivers/mfd/tps68470.c create mode 100644 drivers/platform/x86/intel-int3472/Kconfig create mode 100644 drivers/platform/x86/intel-int3472/Makefile create mode 100644 drivers/platform/x86/intel-int3472/intel_skl_int3472_common.c create mode 100644 drivers/platform/x86/intel-int3472/intel_skl_int3472_common.h create mode 100644 drivers/platform/x86/intel-int3472/intel_skl_int3472_discrete.c create mode 100644 drivers/platform/x86/intel-int3472/intel_skl_int3472_tps68470.c Reviewed-by: Andy Shevchenko Acked-by: Wolfram Sang # for changing I2C core Reviewed-by: Andy Shevchenko