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nvmem: meson-efuse: add write support

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Add write support to the meson-gx efuse driver.
Beware, this efuse is one time programmable !

Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jerome Brunet 2018-05-11 12:07:01 +01:00 committed by Greg Kroah-Hartman
parent a29a63bdaf
commit e55077307d
1 changed files with 8 additions and 1 deletions
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9
drivers/nvmem/meson-efuse.c
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@ -28,6 +28,13 @@ static int meson_efuse_read(void *context, unsigned int offset,
bytes, 0, 0, 0);
}
static int meson_efuse_write(void *context, unsigned int offset,
void *val, size_t bytes)
{
return meson_sm_call_write((u8 *)val, bytes, SM_EFUSE_WRITE, offset,
bytes, 0, 0, 0);
}
static const struct of_device_id meson_efuse_match[] = {
{ .compatible = "amlogic,meson-gxbb-efuse", },
{ /* sentinel */ },
@ -52,8 +59,8 @@ static int meson_efuse_probe(struct platform_device *pdev)
econfig->name = dev_name(dev);
econfig->stride = 1;
econfig->word_size = 1;
econfig->read_only = true;
econfig->reg_read = meson_efuse_read;
econfig->reg_write = meson_efuse_write;
econfig->size = size;
nvmem = devm_nvmem_register(&pdev->dev, econfig);