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| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2021-12-09 18:42:34 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-21 10:26:50 +0100 |
| commit | 98e2c4efae214fb7086cac9117616eb6ea11475d (patch) | |
| tree | 7bb49edb847d3ce7d60aaa0727f9b51e75678026 /drivers/nvmem | |
| parent | dt-bindings: nvmem: mediatek: add support for mt8195 (diff) | |
| download | linux-98e2c4efae214fb7086cac9117616eb6ea11475d.tar.xz linux-98e2c4efae214fb7086cac9117616eb6ea11475d.zip | |
nvmem: mtk-efuse: support minimum one byte access stride and granularity
In order to support nvmem bits property, should support minimum 1 byte
read stride and minimum 1 byte read granularity at the same time.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20211209174235.14049-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem')
| -rw-r--r-- | drivers/nvmem/mtk-efuse.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c index 6a537d959f14..e9a375dd84af 100644 --- a/drivers/nvmem/mtk-efuse.c +++ b/drivers/nvmem/mtk-efuse.c @@ -19,11 +19,12 @@ static int mtk_reg_read(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; + void __iomem *addr = priv->base + reg; + u8 *val = _val; + int i; - while (words--) - *val++ = readl(priv->base + reg + (i++ * 4)); + for (i = 0; i < bytes; i++, val++) + *val = readb(addr + i); return 0; } @@ -45,8 +46,8 @@ static int mtk_efuse_probe(struct platform_device *pdev) if (IS_ERR(priv->base)) return PTR_ERR(priv->base); - econfig.stride = 4; - econfig.word_size = 4; + econfig.stride = 1; + econfig.word_size = 1; econfig.reg_read = mtk_reg_read; econfig.size = resource_size(res); econfig.priv = priv; |