From patchwork Fri Jan 21 14:32:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Binding X-Patchwork-Id: 534247 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 B3544C433FE for ; Fri, 21 Jan 2022 14:33:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1381177AbiAUOdY (ORCPT ); Fri, 21 Jan 2022 09:33:24 -0500 Received: from mx0a-001ae601.pphosted.com ([67.231.149.25]:5174 "EHLO mx0b-001ae601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1381159AbiAUOdV (ORCPT ); Fri, 21 Jan 2022 09:33:21 -0500 Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 20LDS7PF017315; Fri, 21 Jan 2022 08:32:57 -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=8hcY3hq134C9MEdnIhZfFx5d+Fsp8aYUr67yHiyM5wc=; b=eCGBuWYyTjc5aI1YDO0ML08Qllo6J1xD5spZvz0bkAiCFJ82Bu09zmnwnHtLL3XZ0mgQ 1uxO6oDh+yHLGV1XmxbDXjWrICowocwPVoVlQwImjHdAtUoinNq5qZQ0CvmtKXzsVbSN o3Kf/bXk7azK6RoqtFOnh3+VZF7FbgaLBr2QIcjm34BBWdc5zZf/KxI1nxBRtUE4FXHC Oa6Etun0GoCK9gv8gP9CUZpEcoh14KwhIxn0Y937c98NEw7CFGt/g4pOboWPDcjl2aMZ Q+Gm14YlinBimQ/OEtqKlnK06jWHpT4Pf0mwz4/Y0sTpHDqOOi/wSaVDxQu0ie9EEHdE Tw== Received: from ediex02.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 3dqhyq0up1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Fri, 21 Jan 2022 08:32:57 -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; Fri, 21 Jan 2022 14:32:55 +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 14:32:55 +0000 Received: from LONN2DGDQ73.ad.cirrus.com (unknown [198.90.238.138]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 0E1A7B0E; Fri, 21 Jan 2022 14:32:55 +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 v5 0/9] Support Spi in i2c-multi-instantiate driver Date: Fri, 21 Jan 2022 14:32:45 +0000 Message-ID: <20220121143254.6432-1-sbinding@opensource.cirrus.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Proofpoint-GUID: 1cpfQeCaNrkUXtnFnLZoLBN1q9VoT5xe X-Proofpoint-ORIG-GUID: 1cpfQeCaNrkUXtnFnLZoLBN1q9VoT5xe 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 (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 V4: - renamed bus-multi-instantiate to serial-multi-instantiate - various minor fixes in serial-multi-instantiate - fix returns in serial-multi-instantiate - removed unnecessary stubs in spi.h - re-order 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 | 14 +- drivers/platform/x86/Makefile | 2 +- drivers/platform/x86/i2c-multi-instantiate.c | 174 --------- .../platform/x86/serial-multi-instantiate.c | 346 ++++++++++++++++++ drivers/spi/spi.c | 137 ++++++- include/linux/spi/spi.h | 20 + sound/pci/hda/patch_realtek.c | 43 ++- 9 files changed, 549 insertions(+), 207 deletions(-) delete mode 100644 drivers/platform/x86/i2c-multi-instantiate.c create mode 100644 drivers/platform/x86/serial-multi-instantiate.c