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- From 98e2c4efae214fb7086cac9117616eb6ea11475d Mon Sep 17 00:00:00 2001
- From: Chunfeng Yun <[email protected]>
- Date: Thu, 9 Dec 2021 17:42:34 +0000
- Subject: [PATCH] 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 <[email protected]>
- Signed-off-by: Srinivas Kandagatla <[email protected]>
- Link: https://lore.kernel.org/r/[email protected]
- Signed-off-by: Greg Kroah-Hartman <[email protected]>
- ---
- drivers/nvmem/mtk-efuse.c | 13 +++++++------
- 1 file changed, 7 insertions(+), 6 deletions(-)
- --- 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 platfo
- 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;
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