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52 lines
1.6 KiB
Diff
52 lines
1.6 KiB
Diff
From 44ae4ed142265a6d50a9d3e6f4c395f97b6849ab Mon Sep 17 00:00:00 2001
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From: Zhanyong Wang <zhanyong.wang@mediatek.com>
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Date: Sat, 6 Nov 2021 20:06:30 +0800
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Subject: [PATCH 2/5] nvmem: mtk-efuse: support minimum one byte access stride
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and granularity
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In order to support nvmem bits property, should support minimum 1 byte
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read stride and minimum 1 byte read granularity at the same time.
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Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
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Signed-off-by: Zhanyong Wang <zhanyong.wang@mediatek.com>
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Change-Id: Iafe1ebf195d58a3e9e3518913f795d14a01dfd3b
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---
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drivers/nvmem/mtk-efuse.c | 13 +++++++------
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1 file changed, 7 insertions(+), 6 deletions(-)
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diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c
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index 856d9c3fc38e..2e728fed0b49 100644
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--- a/drivers/nvmem/mtk-efuse.c
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+++ b/drivers/nvmem/mtk-efuse.c
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@@ -19,11 +19,12 @@ static int mtk_reg_read(void *context,
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unsigned int reg, void *_val, size_t bytes)
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{
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struct mtk_efuse_priv *priv = context;
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- u32 *val = _val;
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- int i = 0, words = bytes / 4;
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+ void __iomem *addr = priv->base + reg;
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+ u8 *val = _val;
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+ int i;
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- while (words--)
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- *val++ = readl(priv->base + reg + (i++ * 4));
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+ for (i = 0; i < bytes; i++, val++)
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+ *val = readb(addr + i);
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return 0;
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}
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@@ -58,8 +59,8 @@ static int mtk_efuse_probe(struct platform_device *pdev)
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if (IS_ERR(priv->base))
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return PTR_ERR(priv->base);
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- econfig.stride = 4;
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- econfig.word_size = 4;
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+ econfig.stride = 1;
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+ econfig.word_size = 1;
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econfig.reg_read = mtk_reg_read;
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econfig.reg_write = mtk_reg_write;
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econfig.size = resource_size(res);
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--
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2.18.0
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