From patchwork Thu Jan 20 13:43:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Binding X-Patchwork-Id: 534056 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BE36C433FE for ; Thu, 20 Jan 2022 13:44:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243447AbiATNo1 (ORCPT ); Thu, 20 Jan 2022 08:44:27 -0500 Received: from mx0b-001ae601.pphosted.com ([67.231.152.168]:62326 "EHLO mx0b-001ae601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241971AbiATNoZ (ORCPT ); Thu, 20 Jan 2022 08:44:25 -0500 Received: from pps.filterd (m0077474.ppops.net [127.0.0.1]) by mx0b-001ae601.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 20K4mpgj024668; Thu, 20 Jan 2022 07:43:41 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=PODMain02222019; bh=DzR07ZdJHZPEr4WdjQIs/Aa6Ap341lhnel2ikN6KcYQ=; b=PeG5I/+V3g+zlBmOJ0W83BCDaWNbXXtPEiiMk6bY4ne1y6SEHKxnVpaztVD72WjcbWNI q32g3B/M522unWRjePKIUew2/H1jn/hdKmfhVfbBhqH0OU81/iIvy5DJ9DplWzGuuPCN PRGLXz2m6YBNcspCIywcDrYLLKRJPdd1yT081ibi4t/0cp9+PGbLtTPg7wveglpkzszE jto/yj5NDAq/kXbI16Z54cvg9XO1JZepHOgTLoVwPkIUmP+5/F71yzZHSZAh085RGxcm H9VgEYl9zp164Z9iYQ3juPDQEXbvbpYzk6EKt1QXyDtHrN+sNTVtNLS4y4KOhUS45pEs RQ== Received: from ediex02.ad.cirrus.com ([84.19.233.68]) by mx0b-001ae601.pphosted.com (PPS) with ESMTPS id 3dpk9mh838-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Thu, 20 Jan 2022 07:43:41 -0600 Received: from EDIEX01.ad.cirrus.com (198.61.84.80) by EDIEX02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.18; Thu, 20 Jan 2022 13:43:40 +0000 Received: from ediswmail.ad.cirrus.com (198.61.86.93) by EDIEX01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server id 15.1.2375.18 via Frontend Transport; Thu, 20 Jan 2022 13:43:40 +0000 Received: from LONN2DGDQ73.ad.cirrus.com (unknown [198.90.238.138]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id CEB9CB13; Thu, 20 Jan 2022 13:43:39 +0000 (UTC) From: Stefan Binding To: Mark Brown , "Rafael J . Wysocki" , Len Brown , Hans de Goede , Mark Gross , Jaroslav Kysela , Takashi Iwai CC: , , , , , , Stefan Binding Subject: [PATCH v4 0/9] Support Spi in i2c-multi-instantiate driver Date: Thu, 20 Jan 2022 13:43:17 +0000 Message-ID: <20220120134326.5295-1-sbinding@opensource.cirrus.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: 12Kqa8o7-oMcgl1qB3jB62GN_b8lxr3R X-Proofpoint-GUID: 12Kqa8o7-oMcgl1qB3jB62GN_b8lxr3R X-Proofpoint-Spam-Reason: safe Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Add support for SPI bus in the i2c-multi-instantiate driver as upcoming laptops will need to multi instantiate SPI devices from a single device node, which has multiple SpiSerialBus entries at the ACPI table. With the new SPI support, i2c-multi-instantiate becomes bus-multi-instantiate and is moved to the ACPI folder. The intention is to support the SPI bus by re-using the current I2C multi instantiate, instead of creating a new SPI multi instantiate, to make it possible for peripherals that can be controlled by I2C or SPI to have the same HID at the ACPI table. The new driver (Bus multi instantiate, bmi) checks for the hard-coded bus type and returns -ENODEV in case of zero devices found for that bus. In the case of automatic bus detection, the driver will give preference to I2C. The expectation is for a device node in the ACPI table to have multiple I2cSerialBus only or multiple SpiSerialBus only, not a mix of both; and for the case where there are both entries in one device node, only the I2C ones would be probed. This new bus multi instantiate will be used in CS35L41 HDA new driver. Changes since V2: - Moved bus-multi-instantiate back into platform/x86 Lucas Tanure (4): platform/x86: i2c-multi-instantiate: Rename it for a generic bus driver name platform/x86: bus-multi-instantiate: Reorganize I2C functions ALSA: hda/realtek: Add support for HP Laptops ACPI / scan: Create platform device for CS35L41 Stefan Binding (5): spi: Make spi_alloc_device and spi_add_device public again spi: Create helper API to lookup ACPI info for spi device spi: Support selection of the index of the ACPI Spi Resource before alloc spi: Add API to count spi acpi resources platform/x86: bus-multi-instantiate: Add SPI support MAINTAINERS | 4 +- drivers/acpi/scan.c | 16 +- drivers/platform/x86/Kconfig | 14 +- drivers/platform/x86/Makefile | 2 +- drivers/platform/x86/bus-multi-instantiate.c | 369 +++++++++++++++++++ drivers/platform/x86/i2c-multi-instantiate.c | 174 --------- drivers/spi/spi.c | 142 ++++++- include/linux/spi/spi.h | 32 ++ sound/pci/hda/patch_realtek.c | 43 ++- 9 files changed, 588 insertions(+), 208 deletions(-) create mode 100644 drivers/platform/x86/bus-multi-instantiate.c delete mode 100644 drivers/platform/x86/i2c-multi-instantiate.c