linux-kernel - Re: [PATCH v2] nvmem: mtk-efuse: Remove EFUSE register write support

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Message-ID: <1598427273.27965.0.camel@mtksdaap41>
Date:   Wed, 26 Aug 2020 15:34:33 +0800
From:   CK Hu <ck.hu@...iatek.com>
To:     Chih-En Hsu <chih-en.hsu@...iatek.com>
CC:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <Andrew-CT.Chen@...iatek.com>, <srv_heupstream@...iatek.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>, <Michael.Mei@...iatek.com>
Subject: Re: [PATCH v2] nvmem: mtk-efuse: Remove EFUSE register write support

Hi, Chih-En:

On Wed, 2020-08-26 at 14:21 +0800, Chih-En Hsu wrote:
> This patch is to remove function "mtk_reg_write" since
> Mediatek EFUSE hardware only supports read functionality
> for NVMEM consumers.
> 

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> Fixes: 4c7e4fe37766 ("nvmem: mediatek: Add Mediatek EFUSE driver")
> Signed-off-by: Chih-En Hsu <chih-en.hsu@...iatek.com>
> ---
>  drivers/nvmem/mtk-efuse.c | 14 --------------
>  1 file changed, 14 deletions(-)
> 
> diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c
> index 856d9c3fc38e..6a537d959f14 100644
> --- a/drivers/nvmem/mtk-efuse.c
> +++ b/drivers/nvmem/mtk-efuse.c
> @@ -28,19 +28,6 @@ static int mtk_reg_read(void *context,
>  	return 0;
>  }
>  
> -static int mtk_reg_write(void *context,
> -			 unsigned int reg, void *_val, size_t bytes)
> -{
> -	struct mtk_efuse_priv *priv = context;
> -	u32 *val = _val;
> -	int i = 0, words = bytes / 4;
> -
> -	while (words--)
> -		writel(*val++, priv->base + reg + (i++ * 4));
> -
> -	return 0;
> -}
> -
>  static int mtk_efuse_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
> @@ -61,7 +48,6 @@ static int mtk_efuse_probe(struct platform_device *pdev)
>  	econfig.stride = 4;
>  	econfig.word_size = 4;
>  	econfig.reg_read = mtk_reg_read;
> -	econfig.reg_write = mtk_reg_write;
>  	econfig.size = resource_size(res);
>  	econfig.priv = priv;
>  	econfig.dev = dev;