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nvmem: mtk-efuse: support minimum one byte access stride and granularity

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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>
This commit is contained in:
Chunfeng Yun 2021-12-09 17:42:34 +00:00 committed by Greg Kroah-Hartman
parent 9d87b0ac80
commit 98e2c4efae
1 changed files with 7 additions and 6 deletions
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13
drivers/nvmem/mtk-efuse.c
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@ -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;