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, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 AFBF5C41604 for ; Tue, 6 Oct 2020 15:59:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7129C2075A for ; Tue, 6 Oct 2020 15:59:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726330AbgJFP7Q (ORCPT ); Tue, 6 Oct 2020 11:59:16 -0400 Received: from mga06.intel.com ([134.134.136.31]:56023 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725970AbgJFP7K (ORCPT ); Tue, 6 Oct 2020 11:59:10 -0400 IronPort-SDR: YhFx+BBZl6//WSY8lk5UF16QClVXQ6Stl9G3TxHKr2He1roFWqccSTzIV72DYJOkutWVZmLOkn Ge4+HtJ5Pclg== X-IronPort-AV: E=McAfee;i="6000,8403,9765"; a="226148699" X-IronPort-AV: E=Sophos;i="5.77,343,1596524400"; d="scan'208";a="226148699" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Oct 2020 08:59:05 -0700 IronPort-SDR: n3gTXKqyzGGj5EgagxFxtQdWpnG31/gymGCTdpqWXpw4J1yWrTGgPHLYJBa6l2D7XRL4mQgpHQ 5VLIiSoxiwvw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,343,1596524400"; d="scan'208";a="343826712" Received: from zulkifl3-ilbpg0.png.intel.com ([10.88.229.114]) by orsmga008.jf.intel.com with ESMTP; 06 Oct 2020 08:59:02 -0700 From: muhammad.husaini.zulkifli@intel.com To: adrian.hunter@intel.com, michal.simek@xilinx.com, sudeep.holla@arm.com, ulf.hansson@linaro.org, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: lakshmi.bai.raja.subramanian@intel.com, wan.ahmad.zainie.wan.mohamad@intel.com, muhammad.husaini.zulkifli@intel.com, arnd@arndb.de Subject: [PATCH v3 2/2] firmware: Keem Bay: Add support for Arm Trusted Firmware Service call Date: Tue, 6 Oct 2020 23:55:49 +0800 Message-Id: <20201006155549.3595-3-muhammad.husaini.zulkifli@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201006155549.3595-1-muhammad.husaini.zulkifli@intel.com> References: <20201006155549.3595-1-muhammad.husaini.zulkifli@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Muhammad Husaini Zulkifli Add header file to handle API function for device driver to communicate with Arm Trusted Firmware. Signed-off-by: Muhammad Husaini Zulkifli --- .../linux/firmware/intel/keembay_firmware.h | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 include/linux/firmware/intel/keembay_firmware.h diff --git a/include/linux/firmware/intel/keembay_firmware.h b/include/linux/firmware/intel/keembay_firmware.h new file mode 100644 index 000000000000..9adb8c87b788 --- /dev/null +++ b/include/linux/firmware/intel/keembay_firmware.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Intel Keembay SOC Firmware API Layer + * + * Copyright (C) 2020-2021, Intel Corporation + * + * Muhammad Husaini Zulkifli + */ + +#ifndef __FIRMWARE_KEEMBAY_SMC_H__ +#define __FIRMWARE_KEEMBAY_SMC_H__ + +#include + +/** + * This file defines API function that can be called by device driver in order to + * communicate with Arm Trusted Firmware. + */ + +/* Setting for Keem Bay IO Pad Line Voltage Selection */ +#define KEEMBAY_SET_SD_VOLTAGE_FUNC_ID 0x8200ff26 +#define KEEMBAY_SET_1V8_VOLT 0x01 +#define KEEMBAY_SET_3V3_VOLT 0x00 + +#if IS_ENABLED(CONFIG_HAVE_ARM_SMCCC_DISCOVERY) +static int do_fw_invoke(u64 func_id, u64 arg0, u64 arg1) +{ + struct arm_smccc_res res; + + arm_smccc_1_1_invoke(func_id, arg0, arg1, &res); + + return res.a0; +} + +int keembay_sd_voltage_selection(int volt) +{ + return do_fw_invoke(KEEMBAY_SET_SD_VOLTAGE_FUNC_ID, volt, 0); +} +#else +static inline int keembay_sd_voltage_selection(int volt) +{ + return -ENODEV; +} +#endif + +#endif /* __FIRMWARE_KEEMBAY_SMC_H__ */ -- 2.17.1