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>

1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c
index b5305f08b184..2bdb6c389328 100644
--- a/drivers/nvmem/qfprom.c
+++ b/drivers/nvmem/qfprom.c
@@ -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,