diff options
| -rw-r--r-- | drivers/nvmem/mxs-ocotp.c | 83 |
1 files changed, 22 insertions, 61 deletions
diff --git a/drivers/nvmem/mxs-ocotp.c b/drivers/nvmem/mxs-ocotp.c index 2bb3c57..d26dd03 100644 --- a/drivers/nvmem/mxs-ocotp.c +++ b/drivers/nvmem/mxs-ocotp.c @@ -25,7 +25,6 @@ #include <linux/nvmem-provider.h> #include <linux/of_device.h> #include <linux/platform_device.h> -#include <linux/regmap.h> #include <linux/slab.h> #include <linux/stmp_device.h> @@ -66,11 +65,10 @@ static int mxs_ocotp_wait(struct mxs_ocotp *otp) return 0; } -static int mxs_ocotp_read(void *context, const void *reg, size_t reg_size, - void *val, size_t val_size) +static int mxs_ocotp_read(void *context, unsigned int offset, + void *val, size_t bytes) { struct mxs_ocotp *otp = context; - unsigned int offset = *(u32 *)reg; u32 *buf = val; int ret; @@ -94,17 +92,16 @@ static int mxs_ocotp_read(void *context, const void *reg, size_t reg_size, if (ret) goto close_banks; - while (val_size >= reg_size) { + while (bytes) { if ((offset < OCOTP_DATA_OFFSET) || (offset % 16)) { /* fill up non-data register */ - *buf = 0; + *buf++ = 0; } else { - *buf = readl(otp->base + offset); + *buf++ = readl(otp->base + offset); } - buf++; - val_size -= reg_size; - offset += reg_size; + bytes -= 4; + offset += 4; } close_banks: @@ -117,57 +114,29 @@ disable_clk: return ret; } -static int mxs_ocotp_write(void *context, const void *data, size_t count) -{ - /* We don't want to support writing */ - return 0; -} - -static bool mxs_ocotp_writeable_reg(struct device *dev, unsigned int reg) -{ - return false; -} - static struct nvmem_config ocotp_config = { .name = "mxs-ocotp", + .stride = 16, + .word_size = 4, .owner = THIS_MODULE, + .reg_read = mxs_ocotp_read, }; -static const struct regmap_range imx23_ranges[] = { - regmap_reg_range(OCOTP_DATA_OFFSET, 0x210), -}; - -static const struct regmap_access_table imx23_access = { - .yes_ranges = imx23_ranges, - .n_yes_ranges = ARRAY_SIZE(imx23_ranges), -}; - -static const struct regmap_range imx28_ranges[] = { - regmap_reg_range(OCOTP_DATA_OFFSET, 0x290), -}; - -static const struct regmap_access_table imx28_access = { - .yes_ranges = imx28_ranges, - .n_yes_ranges = ARRAY_SIZE(imx28_ranges), +struct mxs_data { + int size; }; -static struct regmap_bus mxs_ocotp_bus = { - .read = mxs_ocotp_read, - .write = mxs_ocotp_write, /* make regmap_init() happy */ - .reg_format_endian_default = REGMAP_ENDIAN_NATIVE, - .val_format_endian_default = REGMAP_ENDIAN_NATIVE, +static const struct mxs_data imx23_data = { + .size = 0x220, }; -static struct regmap_config mxs_ocotp_config = { - .reg_bits = 32, - .val_bits = 32, - .reg_stride = 16, - .writeable_reg = mxs_ocotp_writeable_reg, +static const struct mxs_data imx28_data = { + .size = 0x2a0, }; static const struct of_device_id mxs_ocotp_match[] = { - { .compatible = "fsl,imx23-ocotp", .data = &imx23_access }, - { .compatible = "fsl,imx28-ocotp", .data = &imx28_access }, + { .compatible = "fsl,imx23-ocotp", .data = &imx23_data }, + { .compatible = "fsl,imx28-ocotp", .data = &imx28_data }, { /* sentinel */}, }; MODULE_DEVICE_TABLE(of, mxs_ocotp_match); @@ -175,11 +144,10 @@ MODULE_DEVICE_TABLE(of, mxs_ocotp_match); static int mxs_ocotp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + const struct mxs_data *data; struct mxs_ocotp *otp; struct resource *res; const struct of_device_id *match; - struct regmap *regmap; - const struct regmap_access_table *access; int ret; match = of_match_device(dev->driver->of_match_table, dev); @@ -205,17 +173,10 @@ static int mxs_ocotp_probe(struct platform_device *pdev) return ret; } - access = match->data; - mxs_ocotp_config.rd_table = access; - mxs_ocotp_config.max_register = access->yes_ranges[0].range_max; - - regmap = devm_regmap_init(dev, &mxs_ocotp_bus, otp, &mxs_ocotp_config); - if (IS_ERR(regmap)) { - dev_err(dev, "regmap init failed\n"); - ret = PTR_ERR(regmap); - goto err_clk; - } + data = match->data; + ocotp_config.size = data->size; + ocotp_config.priv = otp; ocotp_config.dev = dev; otp->nvmem = nvmem_register(&ocotp_config); if (IS_ERR(otp->nvmem)) { |