diff options
author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2016-04-24 20:28:13 +0100 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-01 14:01:13 -0700 |
commit | 33e5e29cbbde92615fc80be5a0e4d41346478f19 (patch) | |
tree | cfe74ba90a975eb73fe5422bb03b1ff910d7968a /drivers/nvmem/imx-ocotp.c | |
parent | cc907553ff55dda59c67e09706d3b734d67d0242 (diff) | |
download | linux-33e5e29cbbde92615fc80be5a0e4d41346478f19.tar.bz2 |
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.c | 55 |
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); |