From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751614AbcGMLy4 (ORCPT ); Wed, 13 Jul 2016 07:54:56 -0400 Received: from mga02.intel.com ([134.134.136.20]:1597 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751223AbcGMLyr (ORCPT ); Wed, 13 Jul 2016 07:54:47 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,357,1464678000"; d="scan'208";a="1005949670" From: Crestez Dan Leonard To: linux-acpi@vger.kernel.org, "Rafael J. Wysocki" , Jarkko Nikula , Mika Westerberg Cc: Crestez Dan Leonard , Len Brown , linux-i2c@vger.kernel.org, Wolfram Sang , linux-spi@vger.kernel.org, Mark Brown , linux-kernel@vger.kernel.org, Octavian Purdila Subject: [PATCH v2 0/3] Init device ids from ACPI of_compatible Date: Wed, 13 Jul 2016 14:53:39 +0300 Message-Id: X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When using devicetree stuff like i2c_client.name or spi_device.modalias is initialized to the first DT compatible id with the vendor prefix stripped. Since some drivers rely on this in order to differentiate between hardware variants try to replicate it when using ACPI with DT ids. This also makes it so that the i2c_device_id parameter passed to probe is non-NULL when matching with ACPI and DT ids. These patches are on top of linux-pm/linux-next. I delayed v2 until ACPI overlays got in in order to avoid conflicts. I tested using ACPI overlays but there is no actual dependency. This series just extends the PRP0001 feature to be more useful for I2C/SPI. The patches only touches the ACPI-specific parts of the i2c and spi core. Here is an example .dsl for an SPI accelerometer connected to minnowboard max: Device (ACCL) { Name (_ADR, Zero) Name (_HID, "PRP0001") Name (_CID, "PRP0001") Name (_UID, One) Method (_CRS, 0, Serialized) { Name (RBUF, ResourceTemplate () { SPISerialBus(1, PolarityLow, FourWireMode, 16, ControllerInitiated, 1000000, ClockPolarityLow, ClockPhaseFirst, "\\_SB.SPI1",) GpioInt (Edge, ActiveHigh, Exclusive, PullDown, 0x0000, "\\_SB.GPO2", 0x00, ResourceConsumer, , ) { // Pin list 1 } }) Return (RBUF) } Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"compatible", "st,lis3dh"}, } }) } Link to v1: https://www.spinics.net/lists/linux-acpi/msg66469.html Changes: * Rebase on after acpi overlays got it. * Change acpi_of_modalias outlen param to size_t * Use {} after else Crestez Dan Leonard (3): acpi: Export acpi_of_modalias equiv of of_modalias_node acpi i2c: Initialize info.type from of_compatible acpi spi: Initialize modalias from of_compatible drivers/acpi/bus.c | 36 ++++++++++++++++++++++++++++++++++++ drivers/i2c/i2c-core.c | 8 +++++++- drivers/spi/spi.c | 11 ++++++++++- include/acpi/acpi_bus.h | 1 + 4 files changed, 54 insertions(+), 2 deletions(-) -- 2.7.4