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Subject[PATCH 6/8] nvmem: meson-efuse: add write support
Date
From: Jerome Brunet <jbrunet@baylibre.com>

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>
---
drivers/nvmem/meson-efuse.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/nvmem/meson-efuse.c b/drivers/nvmem/meson-efuse.c
index 4623249dfd87..d769840d1e18 100644
--- a/drivers/nvmem/meson-efuse.c
+++ b/drivers/nvmem/meson-efuse.c
@@ -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);
--
2.16.2
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