struct nvmem_cell {
struct nvmem_cell_entry *entry;
const char *id;
+ int index;
};
static DEFINE_MUTEX(nvmem_mutex);
}
EXPORT_SYMBOL_GPL(devm_nvmem_device_get);
-static struct nvmem_cell *nvmem_create_cell(struct nvmem_cell_entry *entry, const char *id)
+static struct nvmem_cell *nvmem_create_cell(struct nvmem_cell_entry *entry,
+ const char *id, int index)
{
struct nvmem_cell *cell;
const char *name = NULL;
cell->id = name;
cell->entry = entry;
+ cell->index = index;
return cell;
}
__nvmem_device_put(nvmem);
cell = ERR_PTR(-ENOENT);
} else {
- cell = nvmem_create_cell(cell_entry, con_id);
+ cell = nvmem_create_cell(cell_entry, con_id, 0);
if (IS_ERR(cell))
__nvmem_device_put(nvmem);
}
struct nvmem_device *nvmem;
struct nvmem_cell_entry *cell_entry;
struct nvmem_cell *cell;
+ struct of_phandle_args cell_spec;
int index = 0;
+ int cell_index = 0;
+ int ret;
/* if cell name exists, find index to the name */
if (id)
index = of_property_match_string(np, "nvmem-cell-names", id);
- cell_np = of_parse_phandle(np, "nvmem-cells", index);
- if (!cell_np)
- return ERR_PTR(-ENOENT);
+ ret = of_parse_phandle_with_optional_args(np, "nvmem-cells",
+ "#nvmem-cell-cells",
+ index, &cell_spec);
+ if (ret)
+ return ERR_PTR(ret);
+
+ if (cell_spec.args_count > 1)
+ return ERR_PTR(-EINVAL);
+
+ cell_np = cell_spec.np;
+ if (cell_spec.args_count)
+ cell_index = cell_spec.args[0];
nvmem_np = of_get_parent(cell_np);
if (!nvmem_np) {
return ERR_PTR(-ENOENT);
}
- cell = nvmem_create_cell(cell_entry, id);
+ cell = nvmem_create_cell(cell_entry, id, cell_index);
if (IS_ERR(cell))
__nvmem_device_put(nvmem);
}
static int __nvmem_cell_read(struct nvmem_device *nvmem,
- struct nvmem_cell_entry *cell,
- void *buf, size_t *len, const char *id)
+ struct nvmem_cell_entry *cell,
+ void *buf, size_t *len, const char *id, int index)
{
int rc;
nvmem_shift_read_buffer_in_place(cell, buf);
if (nvmem->cell_post_process) {
- rc = nvmem->cell_post_process(nvmem->priv, id,
+ rc = nvmem->cell_post_process(nvmem->priv, id, index,
cell->offset, buf, cell->bytes);
if (rc)
return rc;
if (!buf)
return ERR_PTR(-ENOMEM);
- rc = __nvmem_cell_read(nvmem, cell->entry, buf, len, cell->id);
+ rc = __nvmem_cell_read(nvmem, cell->entry, buf, len, cell->id, cell->index);
if (rc) {
kfree(buf);
return ERR_PTR(rc);
if (rc)
return rc;
- rc = __nvmem_cell_read(nvmem, &cell, buf, &len, NULL);
+ rc = __nvmem_cell_read(nvmem, &cell, buf, &len, NULL, 0);
if (rc)
return rc;
typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
void *val, size_t bytes);
/* used for vendor specific post processing of cell data */
-typedef int (*nvmem_cell_post_process_t)(void *priv, const char *id, unsigned int offset,
- void *buf, size_t bytes);
+typedef int (*nvmem_cell_post_process_t)(void *priv, const char *id, int index,
+ unsigned int offset, void *buf, size_t bytes);
enum nvmem_type {
NVMEM_TYPE_UNKNOWN = 0,