nvmem: qfprom: Allow single byte accesses for read/write
The nvmem core driver supports to read and write single byte. So, allow qfprom to support this feature. This change helps in extracting a required value based on bit-offset and number of bits for the required value in the nvmem cell. Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -21,11 +21,11 @@ static int qfprom_reg_read(void *context,
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unsigned int reg, void *_val, size_t bytes)
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unsigned int reg, void *_val, size_t bytes)
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{
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{
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void __iomem *base = context;
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void __iomem *base = context;
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u32 *val = _val;
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u8 *val = _val;
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int i = 0, words = bytes / 4;
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int i = 0, words = bytes;
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while (words--)
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while (words--)
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*val++ = readl(base + reg + (i++ * 4));
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*val++ = readb(base + reg + i++);
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return 0;
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return 0;
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}
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}
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@ -34,11 +34,11 @@ static int qfprom_reg_write(void *context,
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unsigned int reg, void *_val, size_t bytes)
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unsigned int reg, void *_val, size_t bytes)
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{
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{
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void __iomem *base = context;
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void __iomem *base = context;
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u32 *val = _val;
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u8 *val = _val;
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int i = 0, words = bytes / 4;
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int i = 0, words = bytes;
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while (words--)
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while (words--)
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writel(*val++, base + reg + (i++ * 4));
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writeb(*val++, base + reg + i++);
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return 0;
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return 0;
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}
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}
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@ -53,7 +53,7 @@ static int qfprom_remove(struct platform_device *pdev)
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static struct nvmem_config econfig = {
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static struct nvmem_config econfig = {
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.name = "qfprom",
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.name = "qfprom",
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.owner = THIS_MODULE,
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.owner = THIS_MODULE,
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.stride = 4,
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.stride = 1,
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.word_size = 1,
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.word_size = 1,
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.reg_read = qfprom_reg_read,
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.reg_read = qfprom_reg_read,
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.reg_write = qfprom_reg_write,
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.reg_write = qfprom_reg_write,
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