From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 02365C433E0 for ; Sun, 9 Aug 2020 13:59:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C8AF5206B2 for ; Sun, 9 Aug 2020 13:59:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="dwB1HrHV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726070AbgHIN71 (ORCPT ); Sun, 9 Aug 2020 09:59:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726009AbgHIN70 (ORCPT ); Sun, 9 Aug 2020 09:59:26 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83194C061756; Sun, 9 Aug 2020 06:59:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To:Subject:Sender :Reply-To:Content-ID:Content-Description; bh=oWaAVN9sykw0k8emUxb5wR5jVQ2o1BQPhSy1+U7qzfo=; b=dwB1HrHVbcF0ijM9GFl6ucXzXt FbQeUXzkeE1IKxVGEWzwlkKuuy30Yj21HbhKusxteFAb3y3Bzp25Fv+FjPXXWSLcHBhNhjEPxGZIK 5ZcVAQ4jMJXCjNhtslJ4SbtpPgDjYk35EPUF5UjAVeTpkCeiLTuLP5Vlmfg6i47pMVpeBilVwa/y/ cIhOEOXd2r3FPWa0eGHHbWN1Xo0XRwRr5VPOE/IR+tMQm3EyA67Yxd+/Eje5ed4tcBPtqevvDORJQ K9f+fdF/PwbB73uK2y+XsLrUVxNQJ2i6iJ05y4mxLZjF7/letkuCkxqzxXF8p0OCXsldkDLnWGyC2 MjDClEMQ==; Received: from [2601:1c0:6280:3f0:897c:6038:c71d:ecac] by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1k4lr5-0007d5-9Q; Sun, 09 Aug 2020 13:59:19 +0000 Subject: Re: [PATCH v6 2/4] SFH: PCIe driver to add support of AMD sensor fusion To: Sandeep Singh , jikos@kernel.org, benjamin.tissoires@redhat.com, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, srinivas.pandruvada@linux.intel.com, jic23@kernel.org, linux-iio@vger.kernel.org, hdegoede@redhat.com, Nehal-bakulchandra.Shah@amd.com, andy.shevchenko@gmail.com, mail@richard-neumann.de, m.felsch@pengutronix.de Cc: Shyam-sundar.S-k@amd.com References: <20200809102511.2657644-1-Sandeep.Singh@amd.com> <20200809102511.2657644-3-Sandeep.Singh@amd.com> From: Randy Dunlap Message-ID: <3ef30a57-08b4-5908-b13e-c1a52cdc135d@infradead.org> Date: Sun, 9 Aug 2020 06:59:14 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200809102511.2657644-3-Sandeep.Singh@amd.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org On 8/9/20 3:25 AM, Sandeep Singh wrote: > From: Sandeep Singh > > AMD SFH uses HID over PCIe bus.SFH fw is part of MP2 processor > (MP2 which is an ARM® Cortex-M4 core based co-processor to x86) and > it runs on MP2 where in driver resides on X86. This part of module > will communicate with MP2 FW and provide that data into DRAM > > Signed-off-by: Nehal Shah > Signed-off-by: Sandeep Singh > --- > drivers/hid/Kconfig | 2 + > drivers/hid/Makefile | 2 + > drivers/hid/amd-sfh-hid/Kconfig | 21 ++++ > drivers/hid/amd-sfh-hid/Makefile | 15 +++ > drivers/hid/amd-sfh-hid/amd_mp2_pcie.c | 162 +++++++++++++++++++++++++ > drivers/hid/amd-sfh-hid/amd_mp2_pcie.h | 83 +++++++++++++ > 6 files changed, 285 insertions(+) > create mode 100644 drivers/hid/amd-sfh-hid/Kconfig > create mode 100644 drivers/hid/amd-sfh-hid/Makefile > create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.c > create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.h Hi, > diff --git a/drivers/hid/amd-sfh-hid/Kconfig b/drivers/hid/amd-sfh-hid/Kconfig > new file mode 100644 > index 000000000000..e73cf9fe1324 > --- /dev/null > +++ b/drivers/hid/amd-sfh-hid/Kconfig > @@ -0,0 +1,21 @@ > +# SPDX-License-Identifier: GPL-2.0-or-later > +menu "AMD SFH HID support" > + depends on X86_64 || COMPILE_TEST > + depends on PCI > + > +config AMD_SFH_HID > + tristate "AMD Sensor Fusion Hub" > + select HID How about depends on HID We try hard not to select/enable entire subsystems just because one driver wants it. Also, HID depends on INPUT, so it's not safe to select HID unless INPUT is already enabled. > + help > + If you say yes to this option, support will be included for the AMD > + Sensor Fusion Hub. > + This driver will enable sensors functionality to user through HID > + framework. Basically this driver will get data from MP2 FW s/FW/firmware/ or is it "framework" ? > + and provide that data to HID framework. > + MP2 which is an ARM® Cortex-M4 core based co-processor to x86. > + > + This driver can also be built as modules. If so, the modules will built as a module. If so, the module will > + be called amd-sfhtp-hid. > + Say Y or M here if you want to support AMD SFH. If unsure, say N. > + > +endmenu thanks. -- ~Randy