nvmem: core: support passing DT node in cell info

Some hardware may have NVMEM cells described in Device Tree using
individual nodes. Let drivers pass such nodes to the NVMEM subsystem so
they can be later used by NVMEM consumers.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220429162701.2222-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index f58d9bc..1e3c754 100644 (file)
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -467,6 +467,7 @@ static int nvmem_cell_info_to_nvmem_cell_entry_nodup(struct nvmem_device *nvmem,
 
        cell->bit_offset = info->bit_offset;
        cell->nbits = info->nbits;
+       cell->np = info->np;
 
        if (cell->nbits)
                cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset,

diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index c0c0cef..980f9c9 100644 (file)
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -25,6 +25,7 @@ struct nvmem_cell_info {
        unsigned int            bytes;
        unsigned int            bit_offset;
        unsigned int            nbits;
+       struct device_node      *np;
 };
 
 /**