From patchwork Wed Jul 3 11:05:06 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: 809563 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 E8FD26E5ED for ; Wed, 3 Jul 2024 11:05:32 +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=1720004734; cv=none; b=p879siHvhN9gcToQSCuLPbIX2/hcUYTruIFYviFtK3wjLmPzaOyLOFS5xJwUgWn9B/5EWJvFrv8nBH3VcUxmOnmFlxtAFuOki1DylTA1REHkuDCB9LE+NWIO3Piim7OXJ5+lfLf0Q7Ezpu2RuLuxX95/DN6C3gWOrJrIqoO4n6E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720004734; c=relaxed/simple; bh=zeyqNqsiNS1QXxwodcCIh2SYARaX25BQv9Mtyexm1Cg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=j3tnCLM0EGKh5VKJUsulmTMmYTpinn/33s008YeXtNgovmS41u9OW2BdyingaSsdOaHfpGsa1aQcgIQr6HtAhm188OarapOv47PqDLto/Vo9WLXW7KcngQ5+WEW4o2t62jwyHPSHzVJ8HJDhM5ARhM6LuvcUkKvXi2SeD9KxJwA= 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=Clp7dwxr; 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="Clp7dwxr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1720004731; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=7X2f/7GAgJdqiX0ftRW2nU1oJGX9qS2gOTWFHY62kYQ=; b=Clp7dwxr0LsMpwY4giuKWhIH9vm1VFkxxZ7ZhuAP2uh0H32IO3HuhrEzc4V5Ku8E4fkLPs VbyTXgcX8ZSUGwrQovhS7lDPEwwtIk1wWRP1CxoP44oSsfH6tuE6oaAQEairWGpHJzzywH a5Vdgn/NRW62hEK/Lmf7taeR2EVN6Og= 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-134-MAMeP5yLM7iF7OFDub5mrA-1; Wed, 03 Jul 2024 07:05:28 -0400 X-MC-Unique: MAMeP5yLM7iF7OFDub5mrA-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (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 380FF1954B0C; Wed, 3 Jul 2024 11:05:24 +0000 (UTC) Received: from localhost.localdomain (unknown [10.39.192.199]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id ABBFE1955BC0; Wed, 3 Jul 2024 11:05:18 +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 v5 0/6] i2c-i801 / dell-lis3lv02d: Move instantiation of lis3lv02d i2c_client from i2c-i801 to dell-lis3lv02d Date: Wed, 3 Jul 2024 13:05:06 +0200 Message-ID: <20240703110512.21401-1-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 10.30.177.15 Hi All, Here is v5 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 v5: - Make match_acpi_device_ids() and match_acpi_device_ids[] __init[const] - Add "Depends on I2C" to Kconfig (to fix kernel-test-robot reported issues) - Add "this may be dangerous warning" to MODULE_PARM_DESC(probe_i2c_addr) 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/Kconfig | 1 + drivers/platform/x86/dell/Makefile | 1 + drivers/platform/x86/dell/dell-lis3lv02d.c | 335 +++++++++++++++++++ drivers/platform/x86/dell/dell-smo8800-ids.h | 26 ++ drivers/platform/x86/dell/dell-smo8800.c | 16 +- 7 files changed, 384 insertions(+), 146 deletions(-) create mode 100644 drivers/platform/x86/dell/dell-lis3lv02d.c create mode 100644 drivers/platform/x86/dell/dell-smo8800-ids.h