From patchwork Mon Jun 24 11:15:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 807104 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DB5B0139D03 for ; Mon, 24 Jun 2024 11:15:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719227740; cv=none; b=d0tJbMVCVs+ZLU+4mpY06YO6ovbah7yyDqj66w/I4k8CM/Ymhcy1VXxCzMvrj6YXgiFq0/3shAQcgMoAoWuI8A65+2LYjUJWlhvxCk2wRT+l7Fq0seyv76PLnK1+Jlj+/nCtuCRJWouLNkJ2anhpmSs+6uTDLYZZx155BdKz05Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719227740; c=relaxed/simple; bh=21Pa2zMWJacHndGXe8+4giEuxwZm9MI0kin+EhGxIM8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=RjYQ8v0t3KAAHgJxMZj1jxVDYlVzqlg8yWVWBxnYP6BRg0I6chEAwKkeV98IjZrj0xkzLT2UAV9xkJIVzqd51PWlOU/xF9eN2U4R5raLizGCFtOtF8BiC+nxN+mMoKr7A6tVmouKYT0mRJYAqo83wPKx2ApYFt/Nz9S8mbQroBE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=ZGm0FBbF; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZGm0FBbF" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1719227737; 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=52wqmJQd85KJSZYiqketgY1U0psrYJNYCEUthb3vf8I=; b=ZGm0FBbFSB1/09Oxfk0EsJdwMG/H0EmlYuJZRTz+wVHKD5eXw9ixlbUTLQZHndGvkwwTJP k59p4T8nxv9t5LCgiuwd2tKhh0rwdn2ZP8fPUHCWbfcQmvWdprRCdhhr3WppPwTCMkW6Ss bn2oWPkQkgtAGEg0MKUaoprK8GcHaME= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-62-sGGa4muLMiOy0XDqmGt10w-1; Mon, 24 Jun 2024 07:15:34 -0400 X-MC-Unique: sGGa4muLMiOy0XDqmGt10w-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id DC8C2195609F; Mon, 24 Jun 2024 11:15:29 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.193.82]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 4B7C519560AB; Mon, 24 Jun 2024 11:15:21 +0000 (UTC) From: Hans de Goede To: =?utf-8?q?Pali_Roh=C3=A1r?= , =?utf-8?q?Ilpo_J=C3=A4rvi?= =?utf-8?q?nen?= , Andy Shevchenko , Paul Menzel , Wolfram Sang Cc: Hans de Goede , eric.piel@tremplin-utc.net, Marius Hoch , Dell.Client.Kernel@dell.com, Kai Heng Feng , platform-driver-x86@vger.kernel.org, Jean Delvare , Andi Shyti , linux-i2c@vger.kernel.org Subject: [PATCH v4 0/6] i2c-i801 / dell-lis3lv02d: Move instantiation of lis3lv02d i2c_client from i2c-i801 to dell-lis3lv02d Date: Mon, 24 Jun 2024 13:15:12 +0200 Message-ID: <20240624111519.15652-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Hi All, Here is v4 of my patch series to move the manual instantation of lis3lv02d i2c_client-s for SMO88xx ACPI device from the generic i2c-i801.c code to a SMO88xx specific dell-lis3lv02d driver. Moving the i2c_client instantiation there has the following advantages: 1. This moves the SMO88xx ACPI device quirk handling away from the generic i2c-i801 module which is loaded on all Intel x86 machines to a module which will only be loaded when there is an ACPI SMO88xx device. 2. This removes the duplication of the SMO88xx ACPI Hardware ID (HID) table between the i2c-i801 and dell-smo8800 drivers. 3. This allows extending the quirk handling by adding new code and related module parameters to the dell-lis3lv02d driver, without needing to modify the i2c-i801 code. This series also extends the i2c_client instantiation with support for probing for the i2c-address of the lis3lv02d chip on devices which are not yet listed in the DMI table with i2c-addresses for known models. This probing is only done when requested through a module parameter. The probing support adds quite a bit of code which shows why it is good to move the handling out of the generic i2c-i801 code. Changes in v4: - Move the i2c_client instantiation to a new dell-lis3lv02d driver instead of adding it to the dell-smo8800 driver - Address a couple of other minor review comments Changes in v3: - Use an i2c bus notifier so that the i2c_client will still be instantiated if the i801 i2c_adapter shows up later or is re-probed (removed + added again). This addresses the main concern / review-comments made during review of v2. - Add 2 prep patches to the i2c-core / the i2c-i801 driver to allow bus-notifier use / to avoid the need to duplicate the PCI-ids of IDF i2c-i801 adapters. - Switch to standard dmi_system_id matching to check both sys-vendor + product-name DMI fields - Drop the patch to alternatively use the st_accel IIO driver instead of drivers/misc/lis3lv02d/lis3lv02d.c Changes in v2: - Drop "[PATCH 1/6] platform/x86: dell-smo8800: Only load on Dell laptops" - Use a pci_device_id table to check for IDF (non main) i2c-i801 SMBusses - Add a comment documenting the IDF PCI device ids - Keep using drivers/misc/lis3lv02d/lis3lv02d.c by default - Rename the module-parameter to use_iio_driver which can be set to use the IIO st_accel driver instead - Add a new patch adding the accelerometer address for the 2 models I have tested this on to dell_lis3lv02d_devices[] Since this touches files under both drivers/i2c and drivers/platform/x86 some subsystem coordination is necessary. I think it would be best to just merge the entire series through the i2c subsystem since this touches some core i2c files. As pdx86 subsys co-maintainer I'm fine with doing so. Regards, Hans Hans de Goede (6): i2c: core: Setup i2c_adapter runtime-pm before calling device_add() i2c: i801: Use a different adapter-name for IDF adapters platform/x86: dell-smo8800: Move SMO88xx acpi_device_ids to dell-smo8800-ids.h platform/x86: dell-smo8800: Move instantiation of lis3lv02d i2c_client from i2c-i801 to dell-lis3lv02d platform/x86: dell-smo8800: Add a couple more models to lis3lv02d_devices[] platform/x86: dell-smo8800: Add support for probing for the accelerometer i2c address drivers/i2c/busses/i2c-i801.c | 133 +------- drivers/i2c/i2c-core-base.c | 18 +- drivers/platform/x86/dell/Makefile | 1 + drivers/platform/x86/dell/dell-lis3lv02d.c | 331 +++++++++++++++++++ drivers/platform/x86/dell/dell-smo8800-ids.h | 26 ++ drivers/platform/x86/dell/dell-smo8800.c | 16 +- 6 files changed, 379 insertions(+), 146 deletions(-) create mode 100644 drivers/platform/x86/dell/dell-lis3lv02d.c create mode 100644 drivers/platform/x86/dell/dell-smo8800-ids.h