From patchwork Fri Jan 21 17:24:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Binding X-Patchwork-Id: 12720014 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 B050AC433FE for ; Fri, 21 Jan 2022 17:25:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240642AbiAURZC (ORCPT ); Fri, 21 Jan 2022 12:25:02 -0500 Received: from mx0b-001ae601.pphosted.com ([67.231.152.168]:28936 "EHLO mx0b-001ae601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235853AbiAURZB (ORCPT ); Fri, 21 Jan 2022 12:25:01 -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 20LH9Hb3013159; Fri, 21 Jan 2022 11:24:48 -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=fdUwz2fE9/QnfJvce4ApsdtnpQfQkVgz1hq5AF0+SjU=; b=B5VlcrdMdMnk8NnB1oGnvhNUY8thT0ZHWhzqkHQunX7NyQuJcAtBq8n8dCbgQSYKT5SM OslAjFIQCDqEbwQYQ92p15vSdJCpQW3OyzT4AB+VcTrbNo1CeDlindcIxz/Bsw1y3jWt 62uTq9+gyhPJLWscj0cgTj7hsjozFXA8okB2UdDnYoN5VF/hdpsz46mB5G2Ugg1B3dJW /3f1L08AeTQBSdS72TmWxhdUKijFH/ALpCIlH5sujkzffXMQjNjwQ6MSMYKuHWqptE4s AdbAgUR4IK5LsrkO+qC+yqBKjmUerS1J9aRDPb9tTnXv4tCl/atB3KPOYA4QOdhUv9WY fA== Received: from ediex01.ad.cirrus.com ([84.19.233.68]) by mx0b-001ae601.pphosted.com (PPS) with ESMTPS id 3dqhynrw8c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 21 Jan 2022 11:24:48 -0600 Received: from EDIEX01.ad.cirrus.com (198.61.84.80) by EDIEX01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.18; Fri, 21 Jan 2022 17:24:46 +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; Fri, 21 Jan 2022 17:24:46 +0000 Received: from LONN2DGDQ73.ad.cirrus.com (unknown [198.90.238.138]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 2132CB0E; Fri, 21 Jan 2022 17:24:40 +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 v6 0/9] Support Spi in i2c-multi-instantiate driver Date: Fri, 21 Jan 2022 17:24:22 +0000 Message-ID: <20220121172431.6876-1-sbinding@opensource.cirrus.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: t8MGG8qELi458L786NZmVmfIVRSJege4 X-Proofpoint-GUID: t8MGG8qELi458L786NZmVmfIVRSJege4 X-Proofpoint-Spam-Reason: safe Precedence: bulk List-ID: X-Mailing-List: linux-acpi@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 (serial multi instantiate, smi) 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 serial multi instantiate will be used in CS35L41 HDA new driver. Changes since V5: - comment, commit message and Kconfig description fixes - minor fixes in serial-multi-instantiate - use lowercase for SSIDs in patch_realtek.c Lucas Tanure (4): platform/x86: i2c-multi-instantiate: Rename it for a generic serial driver name platform/x86: serial-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: serial-multi-instantiate: Add SPI support MAINTAINERS | 4 +- drivers/acpi/scan.c | 16 +- drivers/platform/x86/Kconfig | 12 +- drivers/platform/x86/Makefile | 2 +- drivers/platform/x86/i2c-multi-instantiate.c | 174 --------- .../platform/x86/serial-multi-instantiate.c | 349 ++++++++++++++++++ drivers/spi/spi.c | 137 ++++++- include/linux/spi/spi.h | 20 + sound/pci/hda/patch_realtek.c | 43 ++- 9 files changed, 551 insertions(+), 206 deletions(-) delete mode 100644 drivers/platform/x86/i2c-multi-instantiate.c create mode 100644 drivers/platform/x86/serial-multi-instantiate.c Reviewed-by: Hans de Goede