From patchwork Fri May 21 17:14:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 12273409 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=-11.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 8995DC47076 for ; Fri, 21 May 2021 17:14:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B8E86109F for ; Fri, 21 May 2021 17:14:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238070AbhEURPu (ORCPT ); Fri, 21 May 2021 13:15:50 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:28073 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229999AbhEURPu (ORCPT ); Fri, 21 May 2021 13:15:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1621617267; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=pCgaqDw5Xoc3eJxJfY7O89kRCc0yBN0WDqkGQNlmEqk=; b=VPiKs51mBaYWBXXp/nlLBBOO/bh9IVmAkF+SNwF6F27gjnEysEo/i2wN/Bl6jCJapCXHLa PH53pj7fhapW1602f+QogzqaKgrFHR5OtySwxs8DLTNML4T+lH9PyMeKIoOGi2olInDvBj gj4sBBALBODM373ixb0bHjV9Icxps0o= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-143-oof1jAQOO12a2qpiSgeZyw-1; Fri, 21 May 2021 13:14:23 -0400 X-MC-Unique: oof1jAQOO12a2qpiSgeZyw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5D3F9104FB62; Fri, 21 May 2021 17:14:21 +0000 (UTC) Received: from x1.localdomain (ovpn-114-187.ams2.redhat.com [10.36.114.187]) by smtp.corp.redhat.com (Postfix) with ESMTP id 057B810013D6; Fri, 21 May 2021 17:14:18 +0000 (UTC) From: Hans de Goede To: Jonathan Cameron , Liam Girdwood , Mark Brown Cc: Hans de Goede , Lars-Peter Clausen , Jeremy Cline , linux-iio@vger.kernel.org, Charles Keepax , patches@opensource.cirrus.com, alsa-devel@alsa-project.org Subject: [PATCH 0/8] iio: accel: bmc150: Add support for yoga's with dual accelerometers with an ACPI HID of DUAL250E Date: Fri, 21 May 2021 19:14:10 +0200 Message-Id: <20210521171418.393871-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Hi All, Some 360 degree hinges (yoga) style 2-in-1 devices use 2 bmc150 accels to allow the OS to determine the angle between the display and the base of the device, so that the OS can determine if the 2-in-1 is in laptop or in tablet-mode. We already support this setup on devices using a single ACPI node with a HID of "BOSC0200" to describe both accelerometers. This patch set extends this support to also support the same setup but then using a HID of "DUAL250E". While testing this I found some crashes on rmmod, patches 1-2 fix those patches, patch 3 does some refactoring and patch 4 adds support for the "DUAL250E" HID. Unfortunately we need some more special handling though, which the rest of the patches are for. On Windows both accelerometers are read (polled) by a special service and this service calls a DSM (Device Specific Method), which in turn translates the angles to one of laptop/tablet/tent/stand mode and then notifies the EC about the new mode and the EC then enables or disables the builtin keyboard and touchpad based in the mode. When the 2-in-1 is powered-on or resumed folded in tablet mode the EC senses this independent of the DSM by using a HALL effect sensor which senses that the keyboard has been folded away behind the display. At power-on or resume the EC disables the keyboard based on this and the only way to get the keyboard to work after this is to call the DSM to re-enable it (similar to how we also need to call a special DSM in the kxcjk-1013.c accel driver to re-enable the keyboard). Patches 5-7 deal with the DSM mess and patch 8 adds labels to the 2 accelerometers specifying which one is which. Regards, Hans Hans de Goede (8): iio: accel: bmc150: Fix dereferencing the wrong pointer in bmc150_get/set_second_device iio: accel: bmc150: Don't make the remove function of the second accelerometer unregister itself iio: accel: bmc150: Move check for second ACPI device into a separate function iio: accel: bmc150: Add support for dual-accelerometers with a DUAL250E HID iio: accel: bmc150: Move struct bmc150_accel_data definition to bmc150-accel.h iio: accel: bmc150: Remove bmc150_set/get_second_device() accessor functions iio: accel: bmc150: Add support for DUAL250E ACPI DSM for setting the hinge angle iio: accel: bmc150: Set label based on accel-location for ACPI DUAL250E fwnodes drivers/iio/accel/bmc150-accel-core.c | 87 ++---------- drivers/iio/accel/bmc150-accel-i2c.c | 192 +++++++++++++++++++++----- drivers/iio/accel/bmc150-accel.h | 66 ++++++++- 3 files changed, 239 insertions(+), 106 deletions(-) Reviewed-by: Andy Shevchenko