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=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 3A4BFC433E7 for ; Thu, 8 Oct 2020 02:12:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EC327207C3 for ; Thu, 8 Oct 2020 02:12:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728054AbgJHCMw (ORCPT ); Wed, 7 Oct 2020 22:12:52 -0400 Received: from mga02.intel.com ([134.134.136.20]:31771 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727345AbgJHCMu (ORCPT ); Wed, 7 Oct 2020 22:12:50 -0400 IronPort-SDR: CVggJL8xD0YKojGyN7vrQEN9QYDD0aKliuwjKM3PrIVw9OkHbT9Av+8SNftZChGyyELJWnY/9L TgD+ebHqD++Q== X-IronPort-AV: E=McAfee;i="6000,8403,9767"; a="152154696" X-IronPort-AV: E=Sophos;i="5.77,349,1596524400"; d="scan'208";a="152154696" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Oct 2020 19:12:50 -0700 IronPort-SDR: RI3H4YlVez3FTpUwAKN5Ree7BlzDKmNaSBkf7Qfd9k9NTu646p9CpSVkANAieLYhYCwC820XE5 N+MHdsGTdQLA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,349,1596524400"; d="scan'208";a="355211184" Received: from zulkifl3-ilbpg0.png.intel.com ([10.88.229.114]) by orsmga007.jf.intel.com with ESMTP; 07 Oct 2020 19:12:47 -0700 From: muhammad.husaini.zulkifli@intel.com To: adrian.hunter@intel.com, michal.simek@xilinx.com, andriy.shevchenko@intel.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 v4 1/4] firmware: keembay: Add support for Arm Trusted Firmware Service call Date: Thu, 8 Oct 2020 10:09:33 +0800 Message-Id: <20201008020936.19894-2-muhammad.husaini.zulkifli@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201008020936.19894-1-muhammad.husaini.zulkifli@intel.com> References: <20201008020936.19894-1-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 | 47 +++++++++++++++++++ 1 file changed, 47 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..8a62abcdfead --- /dev/null +++ b/include/linux/firmware/intel/keembay_firmware.h @@ -0,0 +1,47 @@ +/* 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 ARM_SMCCC_SIP_KEEMBAY_SET_SD_VOLTAGE \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_SIP, \ + 0xFF26) + +#define KEEMBAY_SET_1V8_VOLT 1 +#define KEEMBAY_SET_3V3_VOLT 0 + +#if IS_ENABLED(CONFIG_HAVE_ARM_SMCCC_DISCOVERY) +static inline int keembay_sd_voltage_selection(int volt) +{ + struct arm_smccc_res res; + + arm_smccc_1_1_invoke(ARM_SMCCC_SIP_KEEMBAY_SET_SD_VOLTAGE, volt, &res); + if ((int)res.a0 < 0) + return -EINVAL; + + return 0; +} +#else +static inline int keembay_sd_voltage_selection(int volt) +{ + return -ENODEV; +} +#endif +#endif /* __FIRMWARE_KEEMBAY_SMC_H__ */ -- 2.17.1