linux-kernel - [PATCH v2 1/2 RESEND] soc: mediatek: add header for SiP service interface

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Date:   Mon, 16 Dec 2019 11:48:56 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     <linux-scsi@...r.kernel.org>, <martin.petersen@...cle.com>,
        <avri.altman@....com>, <alim.akhtar@...sung.com>,
        <pedrom.sousa@...opsys.com>, <jejb@...ux.ibm.com>,
        <matthias.bgg@...il.com>, <f.fainelli@...il.com>
CC:     <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <beanhuo@...ron.com>,
        <kuohong.wang@...iatek.com>, <peter.wang@...iatek.com>,
        <chun-hung.wu@...iatek.com>, <andy.teng@...iatek.com>,
        <leon.chen@...iatek.com>, Stanley Chu <stanley.chu@...iatek.com>
Subject: [PATCH v2 1/2 RESEND] soc: mediatek: add header for SiP service interface

Add a header for the SiP service interface in order to access
the UFSHCI controller for secure command handling in MediaTek Chipsets.

Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
---
 include/linux/soc/mediatek/mtk_sip_svc.h | 29 ++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 include/linux/soc/mediatek/mtk_sip_svc.h

diff --git a/include/linux/soc/mediatek/mtk_sip_svc.h b/include/linux/soc/mediatek/mtk_sip_svc.h
new file mode 100644
index 000000000000..97311959d7d7
--- /dev/null
+++ b/include/linux/soc/mediatek/mtk_sip_svc.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 MediaTek Inc.
+ */
+#ifndef __MTK_SIP_SVC_H
+#define __MTK_SIP_SVC_H
+
+/* Error Code */
+#define SIP_SVC_E_SUCCESS               0
+#define SIP_SVC_E_NOT_SUPPORTED         -1
+#define SIP_SVC_E_INVALID_PARAMS        -2
+#define SIP_SVC_E_INVALID_RANGE         -3
+#define SIP_SVC_E_PERMISSION_DENIED     -4
+
+#ifdef CONFIG_ARM64
+#define MTK_SIP_SMC_CONVENTION          ARM_SMCCC_SMC_64
+#else
+#define MTK_SIP_SMC_CONVENTION          ARM_SMCCC_SMC_32
+#endif
+
+#define MTK_SIP_SMC_CMD(fn_id) \
+	ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, MTK_SIP_SMC_CONVENTION, \
+			   ARM_SMCCC_OWNER_SIP, fn_id)
+
+/* UFS related SMC call */
+#define MTK_SIP_UFS_CONTROL \
+	MTK_SIP_SMC_CMD(0x276)
+
+#endif
-- 
2.18.0