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

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Message-ID: <CAGOxZ50RKYAEw=HwYMH=Jm7cagUV12C-fwhauJhJqx6HscAmFA@mail.gmail.com>
Date:   Thu, 19 Dec 2019 23:30:30 +0530
From:   Alim Akhtar <alim.akhtar@...il.com>
To:     Stanley Chu <stanley.chu@...iatek.com>
Cc:     linux-scsi@...r.kernel.org,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Avri Altman <avri.altman@....com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Pedro Sousa <pedrom.sousa@...opsys.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        f.fainelli@...il.com, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        open list <linux-kernel@...r.kernel.org>,
        "Bean Huo (beanhuo)" <beanhuo@...ron.com>,
        Kuohong Wang <kuohong.wang@...iatek.com>,
        peter.wang@...iatek.com, chun-hung.wu@...iatek.com,
        andy.teng@...iatek.com, leon.chen@...iatek.com
Subject: Re: [PATCH v2 1/2 RESEND] soc: mediatek: add header for SiP service interface

Hi

On Mon, Dec 16, 2019 at 9:19 AM Stanley Chu <stanley.chu@...iatek.com> wrote:
>
> 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)
> +
How about moving UFS specific stuff to MTK UFS driver and include this
header in driver file?
Rest looks fine.
> +#endif
> --
> 2.18.0



-- 
Regards,
Alim