redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

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>
hifive-unleashed-5.1
Vivek Gautam 2017-01-04 16:18:09 +00:00 committed by Greg Kroah-Hartman
parent e09ee853c9
commit 01d0d2c42a
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/nvmem/qfprom.c
View File

@ -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,