linux-kernel - Re: [PATCH 01/21] dt-binding: memory: mediatek: Add a common larb-port header file

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Date:   Sun, 12 Jul 2020 20:06:17 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Yong Wu <yong.wu@...iatek.com>, Joerg Roedel <joro@...tes.org>,
        Rob Herring <robh+dt@...nel.org>,
        Robin Murphy <robin.murphy@....com>
Cc:     Will Deacon <will@...nel.org>, Evan Green <evgreen@...omium.org>,
        Tomasz Figa <tfiga@...gle.com>,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, youlin.pei@...iatek.com,
        Nicolas Boichat <drinkcat@...omium.org>, anan.sun@...iatek.com,
        cui.zhang@...iatek.com, chao.hao@...iatek.com,
        ming-fan.chen@...iatek.com
Subject: Re: [PATCH 01/21] dt-binding: memory: mediatek: Add a common
 larb-port header file



On 11/07/2020 08:48, Yong Wu wrote:
> Put all the macros about smi larb/port togethers, this is a preparing
> patch for extending LARB_NR and adding new dom-id support.
> 
> Signed-off-by: Yong Wu <yong.wu@...iatek.com>
> ---
>   include/dt-bindings/memory/mt2712-larb-port.h  |  2 +-
>   include/dt-bindings/memory/mt6779-larb-port.h  |  2 +-
>   include/dt-bindings/memory/mt8173-larb-port.h  |  2 +-
>   include/dt-bindings/memory/mt8183-larb-port.h  |  2 +-
>   include/dt-bindings/memory/mtk-smi-larb-port.h | 15 +++++++++++++++
>   5 files changed, 19 insertions(+), 4 deletions(-)
>   create mode 100644 include/dt-bindings/memory/mtk-smi-larb-port.h
> 
> diff --git a/include/dt-bindings/memory/mt2712-larb-port.h b/include/dt-bindings/memory/mt2712-larb-port.h
> index 6f9aa7349cef..b6b2c6bf4459 100644
> --- a/include/dt-bindings/memory/mt2712-larb-port.h
> +++ b/include/dt-bindings/memory/mt2712-larb-port.h
> @@ -6,7 +6,7 @@
>   #ifndef __DTS_IOMMU_PORT_MT2712_H
>   #define __DTS_IOMMU_PORT_MT2712_H
>   
> -#define MTK_M4U_ID(larb, port)		(((larb) << 5) | (port))
> +#include <dt-bindings/memory/mtk-smi-larb-port.h>
>   
>   #define M4U_LARB0_ID			0
>   #define M4U_LARB1_ID			1
> diff --git a/include/dt-bindings/memory/mt6779-larb-port.h b/include/dt-bindings/memory/mt6779-larb-port.h
> index 2ad0899fbf2f..60f57f54393e 100644
> --- a/include/dt-bindings/memory/mt6779-larb-port.h
> +++ b/include/dt-bindings/memory/mt6779-larb-port.h
> @@ -7,7 +7,7 @@
>   #ifndef _DTS_IOMMU_PORT_MT6779_H_
>   #define _DTS_IOMMU_PORT_MT6779_H_
>   
> -#define MTK_M4U_ID(larb, port)		 (((larb) << 5) | (port))
> +#include <dt-bindings/memory/mtk-smi-larb-port.h>
>   
>   #define M4U_LARB0_ID			 0
>   #define M4U_LARB1_ID			 1
> diff --git a/include/dt-bindings/memory/mt8173-larb-port.h b/include/dt-bindings/memory/mt8173-larb-port.h
> index 9f31ccfeca21..d8c99c946053 100644
> --- a/include/dt-bindings/memory/mt8173-larb-port.h
> +++ b/include/dt-bindings/memory/mt8173-larb-port.h
> @@ -6,7 +6,7 @@
>   #ifndef __DTS_IOMMU_PORT_MT8173_H
>   #define __DTS_IOMMU_PORT_MT8173_H
>   
> -#define MTK_M4U_ID(larb, port)		(((larb) << 5) | (port))
> +#include <dt-bindings/memory/mtk-smi-larb-port.h>
>   
>   #define M4U_LARB0_ID			0
>   #define M4U_LARB1_ID			1
> diff --git a/include/dt-bindings/memory/mt8183-larb-port.h b/include/dt-bindings/memory/mt8183-larb-port.h
> index 2c579f305162..275c095a6fd6 100644
> --- a/include/dt-bindings/memory/mt8183-larb-port.h
> +++ b/include/dt-bindings/memory/mt8183-larb-port.h
> @@ -6,7 +6,7 @@
>   #ifndef __DTS_IOMMU_PORT_MT8183_H
>   #define __DTS_IOMMU_PORT_MT8183_H
>   
> -#define MTK_M4U_ID(larb, port)		(((larb) << 5) | (port))
> +#include <dt-bindings/memory/mtk-smi-larb-port.h>
>   
>   #define M4U_LARB0_ID			0
>   #define M4U_LARB1_ID			1
> diff --git a/include/dt-bindings/memory/mtk-smi-larb-port.h b/include/dt-bindings/memory/mtk-smi-larb-port.h
> new file mode 100644
> index 000000000000..2ec7fe5ce4e9
> --- /dev/null
> +++ b/include/dt-bindings/memory/mtk-smi-larb-port.h
> @@ -0,0 +1,15 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (c) 2020 MediaTek Inc.
> + * Author: Yong Wu <yong.wu@...iatek.com>
> + */
> +#ifndef __DTS_MTK_IOMMU_PORT_H_
> +#define __DTS_MTK_IOMMU_PORT_H_
> +
> +#define MTK_LARB_NR_MAX			16

include/soc/mediatek/smi.h has the very same define.
Should smi.h include this file?

Regards,
Matthias

> +
> +#define MTK_M4U_ID(larb, port)		(((larb) << 5) | (port))
> +#define MTK_M4U_TO_LARB(id)		(((id) >> 5) & 0xf)
> +#define MTK_M4U_TO_PORT(id)		((id) & 0x1f)
> +
> +#endif
>