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authorSrinivas Kandagatla <srinivas.kandagatla@linaro.org>2016-04-24 22:28:13 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-05-02 00:01:13 +0300
commit33e5e29cbbde92615fc80be5a0e4d41346478f19 (patch)
treecfe74ba90a975eb73fe5422bb03b1ff910d7968a /drivers/nvmem/imx-ocotp.c
parentcc907553ff55dda59c67e09706d3b734d67d0242 (diff)
downloadlinux-33e5e29cbbde92615fc80be5a0e4d41346478f19.tar.xz
nvmem: imx-ocotp: remove nvmem regmap dependency
This patch moves to nvmem support in the driver to use callback instead of regmap. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem/imx-ocotp.c')
-rw-r--r--drivers/nvmem/imx-ocotp.c55
1 files changed, 11 insertions, 44 deletions
diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c
index d7796eb5421f..75e66ef5b0ec 100644
--- a/drivers/nvmem/imx-ocotp.c
+++ b/drivers/nvmem/imx-ocotp.c
@@ -22,7 +22,6 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
-#include <linux/regmap.h>
#include <linux/slab.h>
struct ocotp_priv {
@@ -31,59 +30,34 @@ struct ocotp_priv {
unsigned int nregs;
};
-static int imx_ocotp_read(void *context, const void *reg, size_t reg_size,
- void *val, size_t val_size)
+static int imx_ocotp_read(void *context, unsigned int offset,
+ void *val, size_t bytes)
{
struct ocotp_priv *priv = context;
- unsigned int offset = *(u32 *)reg;
unsigned int count;
+ u32 *buf = val;
int i;
u32 index;
index = offset >> 2;
- count = val_size >> 2;
+ count = bytes >> 2;
if (count > (priv->nregs - index))
count = priv->nregs - index;
- for (i = index; i < (index + count); i++) {
- *(u32 *)val = readl(priv->base + 0x400 + i * 0x10);
- val += 4;
- }
+ for (i = index; i < (index + count); i++)
+ *buf++ = readl(priv->base + 0x400 + i * 0x10);
return 0;
}
-static int imx_ocotp_write(void *context, const void *data, size_t count)
-{
- /* Not implemented */
- return 0;
-}
-
-static struct regmap_bus imx_ocotp_bus = {
- .read = imx_ocotp_read,
- .write = imx_ocotp_write,
- .reg_format_endian_default = REGMAP_ENDIAN_NATIVE,
- .val_format_endian_default = REGMAP_ENDIAN_NATIVE,
-};
-
-static bool imx_ocotp_writeable_reg(struct device *dev, unsigned int reg)
-{
- return false;
-}
-
-static struct regmap_config imx_ocotp_regmap_config = {
- .reg_bits = 32,
- .val_bits = 32,
- .reg_stride = 4,
- .writeable_reg = imx_ocotp_writeable_reg,
- .name = "imx-ocotp",
-};
-
static struct nvmem_config imx_ocotp_nvmem_config = {
.name = "imx-ocotp",
.read_only = true,
+ .word_size = 4,
+ .stride = 4,
.owner = THIS_MODULE,
+ .reg_read = imx_ocotp_read,
};
static const struct of_device_id imx_ocotp_dt_ids[] = {
@@ -99,7 +73,6 @@ static int imx_ocotp_probe(struct platform_device *pdev)
const struct of_device_id *of_id;
struct device *dev = &pdev->dev;
struct resource *res;
- struct regmap *regmap;
struct ocotp_priv *priv;
struct nvmem_device *nvmem;
@@ -114,15 +87,9 @@ static int imx_ocotp_probe(struct platform_device *pdev)
of_id = of_match_device(imx_ocotp_dt_ids, dev);
priv->nregs = (unsigned int)of_id->data;
- imx_ocotp_regmap_config.max_register = 4 * priv->nregs - 4;
-
- regmap = devm_regmap_init(dev, &imx_ocotp_bus, priv,
- &imx_ocotp_regmap_config);
- if (IS_ERR(regmap)) {
- dev_err(dev, "regmap init failed\n");
- return PTR_ERR(regmap);
- }
+ imx_ocotp_nvmem_config.size = 4 * priv->nregs;
imx_ocotp_nvmem_config.dev = dev;
+ imx_ocotp_nvmem_config.priv = priv;
nvmem = nvmem_register(&imx_ocotp_nvmem_config);
if (IS_ERR(nvmem))
return PTR_ERR(nvmem);