@@ -23,7 +23,6 @@
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/platform_device.h>
-#include <linux/regmap.h>
#define EFUSE_A_SHIFT 6
#define EFUSE_A_MASK 0x3ff
@@ -41,17 +40,9 @@ struct rockchip_efuse_chip {
struct clk *clk;
};
-static int rockchip_efuse_write(void *context, const void *data, size_t count)
+static int rockchip_efuse_read(void *context, unsigned int offset,
+ void *val, size_t bytes)
{
- /* Nothing TBD, Read-Only */
- return 0;
-}
-
-static int rockchip_efuse_read(void *context,
- const void *reg, size_t reg_size,
- void *val, size_t val_size)
-{
- unsigned int offset = *(u32 *)reg;
struct rockchip_efuse_chip *efuse = context;
u8 *buf = val;
int ret;
@@ -64,12 +55,12 @@ static int rockchip_efuse_read(void *context,
writel(EFUSE_LOAD | EFUSE_PGENB, efuse->base + REG_EFUSE_CTRL);
udelay(1);
- while (val_size) {
+ while (bytes--) {
writel(readl(efuse->base + REG_EFUSE_CTRL) &
(~(EFUSE_A_MASK << EFUSE_A_SHIFT)),
efuse->base + REG_EFUSE_CTRL);
writel(readl(efuse->base + REG_EFUSE_CTRL) |
- ((offset & EFUSE_A_MASK) << EFUSE_A_SHIFT),
+ ((offset++ & EFUSE_A_MASK) << EFUSE_A_SHIFT),
efuse->base + REG_EFUSE_CTRL);
udelay(1);
writel(readl(efuse->base + REG_EFUSE_CTRL) |
@@ -79,9 +70,6 @@ static int rockchip_efuse_read(void *context,
writel(readl(efuse->base + REG_EFUSE_CTRL) &
(~EFUSE_STROBE), efuse->base + REG_EFUSE_CTRL);
udelay(1);
-
- val_size -= 1;
- offset += 1;
}
/* Switch to standby mode */
@@ -92,22 +80,11 @@ static int rockchip_efuse_read(void *context,
return 0;
}
-static struct regmap_bus rockchip_efuse_bus = {
- .read = rockchip_efuse_read,
- .write = rockchip_efuse_write,
- .reg_format_endian_default = REGMAP_ENDIAN_NATIVE,
- .val_format_endian_default = REGMAP_ENDIAN_NATIVE,
-};
-
-static struct regmap_config rockchip_efuse_regmap_config = {
- .reg_bits = 32,
- .reg_stride = 1,
- .val_bits = 8,
-};
-
static struct nvmem_config econfig = {
.name = "rockchip-efuse",
.owner = THIS_MODULE,
+ .stride = 1,
+ .word_size = 1,
.read_only = true,
};
@@ -121,7 +98,6 @@ static int rockchip_efuse_probe(struct platform_device *pdev)
{
struct resource *res;
struct nvmem_device *nvmem;
- struct regmap *regmap;
struct rockchip_efuse_chip *efuse;
efuse = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_efuse_chip),
@@ -139,16 +115,9 @@ static int rockchip_efuse_probe(struct platform_device *pdev)
return PTR_ERR(efuse->clk);
efuse->dev = &pdev->dev;
-
- rockchip_efuse_regmap_config.max_register = resource_size(res) - 1;
-
- regmap = devm_regmap_init(efuse->dev, &rockchip_efuse_bus,
- efuse, &rockchip_efuse_regmap_config);
- if (IS_ERR(regmap)) {
- dev_err(efuse->dev, "regmap init failed\n");
- return PTR_ERR(regmap);
- }
-
+ econfig.size = resource_size(res);
+ econfig.reg_read = rockchip_efuse_read;
+ econfig.priv = efuse;
econfig.dev = efuse->dev;
nvmem = nvmem_register(&econfig);
if (IS_ERR(nvmem))
This patch moves to nvmem support in the driver to use callback instead of regmap. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> --- drivers/nvmem/rockchip-efuse.c | 49 ++++++++---------------------------------- 1 file changed, 9 insertions(+), 40 deletions(-) -- 2.5.0