Add a nvmem post process callback to swap the MAC address as required
when read via nvmem.
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
drivers/nvmem/ocotp.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/nvmem/ocotp.c b/drivers/nvmem/ocotp.c
index 78c9f9726db0..b478ece30680 100644
--- a/drivers/nvmem/ocotp.c
+++ b/drivers/nvmem/ocotp.c
@@ -641,6 +641,21 @@ static struct regmap_bus imx_ocotp_regmap_bus = {
.reg_read = imx_ocotp_reg_read,
};
+static int imx_ocotp_cell_pp(void *context, const char *id, unsigned int offset,
+ void *data, size_t bytes)
+{
+ /* Deal with some post processing of nvmem cell data */
+ if (id && !strcmp(id, "mac-address")) {
+ u8 *buf = data;
+ int i;
+
+ for (i = 0; i < bytes/2; i++)
+ swap(buf[i], buf[bytes - i - 1]);
+ }
+
+ return 0;
+}
+
static int imx_ocotp_init_dt(struct ocotp_priv *priv)
{
char mac[MAC_BYTES];
@@ -731,7 +746,8 @@ static int imx_ocotp_probe(struct device *dev)
if (IS_ERR(priv->map))
return PTR_ERR(priv->map);
- nvmem = nvmem_regmap_register(priv->map, "imx-ocotp");
+ nvmem = nvmem_regmap_register_with_pp(priv->map, "imx-ocotp",
+ imx_ocotp_cell_pp);
if (IS_ERR(nvmem))
return PTR_ERR(nvmem);
--
2.39.1
