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Commit 01d0d2c4 authored by Vivek Gautam's avatar Vivek Gautam Committed by Greg Kroah-Hartman
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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: default avatarVivek Gautam <vivek.gautam@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e09ee853

drivers/nvmem/qfprom.c

+7 −7
Original line number Diff line number Diff line
@@ -21,11 +21,11 @@ static int qfprom_reg_read(void *context, 
			unsigned int reg, void *_val, size_t bytes)

{

	void __iomem *base = context;

	u32 *val = _val;

	int i = 0, words = bytes / 4;

	u8 *val = _val;

	int i = 0, words = bytes;



	while (words--)

		*val++ = readl(base + reg + (i++ * 4));

		*val++ = readb(base + reg + i++);



	return 0;

}
@@ -34,11 +34,11 @@ static int qfprom_reg_write(void *context, 
			 unsigned int reg, void *_val, size_t bytes)

{

	void __iomem *base = context;

	u32 *val = _val;

	int i = 0, words = bytes / 4;

	u8 *val = _val;

	int i = 0, words = bytes;



	while (words--)

		writel(*val++, base + reg + (i++ * 4));

		writeb(*val++, base + reg + i++);



	return 0;

}
@@ -53,7 +53,7 @@ static int qfprom_remove(struct platform_device *pdev) 
static struct nvmem_config econfig = {

	.name = "qfprom",

	.owner = THIS_MODULE,

	.stride = 4,

	.stride = 1,

	.word_size = 1,

	.reg_read = qfprom_reg_read,

	.reg_write = qfprom_reg_write,