linux-kernel - Re: [PATCH v1 1/1] soc: mediatek: add SMC fid table for SIP interface

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Date:   Sun, 10 Nov 2019 21:18:38 +0100
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Eason Yen <eason.yen@...iatek.com>
Cc:     linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        devicetree@...r.kernel.org, wsd_upstream@...iatek.com
Subject: Re: [PATCH v1 1/1] soc: mediatek: add SMC fid table for SIP interface



On 28/10/2019 08:29, Eason Yen wrote:
> 1. Add a header file to provide SIP interface to ATF
> 2. Add AUDIO SMC fid
> 
> Change-Id: I218e9f571cea079268a5414725a81e9b35702e33

Please delete Change-Id entry.
Apart from that, I don't really get the reason for this patch. Which driver is
supposed to use this header file?

Please provide more background information.

Regards,
Matthias

> Signed-off-by: Eason Yen <eason.yen@...iatek.com>
> ---
>  include/linux/soc/mediatek/mtk_sip_svc.h |   28 ++++++++++++++++++++++++++++
>  1 file changed, 28 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 0000000..00ee0f4
> --- /dev/null
> +++ b/include/linux/soc/mediatek/mtk_sip_svc.h
> @@ -0,0 +1,28 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2019 MediaTek Inc.
> + */
> +
> +#ifndef __MTK_SIP_SVC_H__
> +#define __MTK_SIP_SVC_H__
> +
> +#include <linux/kernel.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_DENY       -4
> +
> +#ifdef CONFIG_ARM64
> +#define MTK_SIP_SMC_AARCH_BIT			0x40000000
> +#else
> +#define MTK_SIP_SMC_AARCH_BIT			0x00000000
> +#endif
> +
> +/* AUDIO related SMC call */
> +#define MTK_SIP_AUDIO_CONTROL \
> +	(0x82000517 | MTK_SIP_SMC_AARCH_BIT)
> +#endif
> +/* __MTK_SIP_SVC_H__ */
>