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

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Message-ID: <20200826062148.27293-1-chih-en.hsu@mediatek.com>
Date:   Wed, 26 Aug 2020 14:21:50 +0800
From:   Chih-En Hsu <chih-en.hsu@...iatek.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <srv_heupstream@...iatek.com>,
        <Andrew-CT.Chen@...iatek.com>, <Michael.Mei@...iatek.com>,
        Chih-En Hsu <chih-en.hsu@...iatek.com>
Subject: [PATCH v2] nvmem: mtk-efuse: Remove EFUSE register write support

This patch is to remove function "mtk_reg_write" since
Mediatek EFUSE hardware only supports read functionality
for NVMEM consumers.

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;
-- 
2.18.0