From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946651AbbHHBEf (ORCPT ); Fri, 7 Aug 2015 21:04:35 -0400 Received: from mail-pa0-f53.google.com ([209.85.220.53]:33644 "EHLO mail-pa0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946604AbbHHBEa (ORCPT ); Fri, 7 Aug 2015 21:04:30 -0400 From: Duc Dang To: Greg KH , Loc Ho Cc: USB list , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mathias.nyman@intel.com, Mark Langsdorf , patches , Feng Kan , Duc Dang Subject: [PATCH v4 2/2] usb: Add support for ACPI identification to xhci-platform Date: Fri, 7 Aug 2015 18:03:36 -0700 Message-Id: <5e302acb5b03c9bf61ecfb9b5b37e8b3b520bed9.1438994178.git.dhdang@apm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <07fb19170aa7c027f44af634aac7e7918daac7cd.1438994178.git.dhdang@apm.com> References: <07fb19170aa7c027f44af634aac7e7918daac7cd.1438994178.git.dhdang@apm.com> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Provide the methods to let ACPI identify the need to use xhci-platform. Change the Kconfig files so the xhci-plat.o file is selectable during kernel config. This has been tested on an ARM64 machine with platform XHCI, an x86_64 machine with XHCI, and an x86_64 machine without XHCI. There were no regressions or error messages on the machines without platform XHCI. [dhdang: regenerate the patch over 4.2-rc5] Signed-off-by: Mark Langsdorf Signed-off-by: Duc Dang --- Changes from v3: Regenerate the patch over 4.2-rc5 No code change Changes from v2 Replaced tristate with a boolean as the driver doesn't compile as a module Correct --help-- to ---help--- Changes from v1 Renamed from "add support for APM X-Gene to xhci-platform" Removed changes to arm64/Kconfig Made CONFIG_USB_XHCI_PLATFORM a user selectable config option drivers/usb/host/Kconfig | 7 ++++++- drivers/usb/host/xhci-plat.c | 11 +++++++++++ 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 8afc3c1..96231ee 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -32,7 +32,12 @@ config USB_XHCI_PCI default y config USB_XHCI_PLATFORM - tristate + tristate "xHCI platform driver support" + ---help--- + Say 'Y' to enable the support for the xHCI host controller + as a platform device. Many ARM SoCs provide USB this way. + + If unsure, say 'Y'. config USB_XHCI_MVEBU tristate "xHCI support for Marvell Armada 375/38x" diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 5d03f8b..14b40d2 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "xhci.h" #include "xhci-mvebu.h" @@ -262,6 +263,15 @@ static const struct of_device_id usb_xhci_of_match[] = { MODULE_DEVICE_TABLE(of, usb_xhci_of_match); #endif +#ifdef CONFIG_ACPI +static const struct acpi_device_id usb_xhci_acpi_match[] = { + /* APM X-Gene USB Controller */ + { "PNP0D10", }, + { } +}; +MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match); +#endif + static struct platform_driver usb_xhci_driver = { .probe = xhci_plat_probe, .remove = xhci_plat_remove, @@ -269,6 +279,7 @@ static struct platform_driver usb_xhci_driver = { .name = "xhci-hcd", .pm = DEV_PM_OPS, .of_match_table = of_match_ptr(usb_xhci_of_match), + .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match), }, }; MODULE_ALIAS("platform:xhci-hcd"); -- 1.9.1