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nvmem: rockchip-efuse: 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>
hifive-unleashed-5.1
Srinivas Kandagatla 2016-04-24 20:28:11 +01:00 committed by Greg Kroah-Hartman
parent 9c7b16eb35
commit cc907553ff
1 changed files with 9 additions and 40 deletions
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49
drivers/nvmem/rockchip-efuse.c
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@ -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))