Add a nvmem post process callback to swap the MAC address as required when read via nvmem.
Signed-off-by: Lucas Stach <[email protected]> --- 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
