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nvmem: core: provide own priv pointer in post process callback 

It doesn't make any more sense to have a opaque pointer set up by the
nvmem device. Usually, the layout isn't associated with a particular
nvmem device. Instead, let the caller who set the post process callback
provide the priv pointer.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230404172148.82422-21-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Walle 2023-04-04 18:21:28 +01:00 committed by Greg Kroah-Hartman
parent 011e40a166
commit 8a134fd9f9
2 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/nvmem/core.c
View File

@ -54,6 +54,7 @@ struct nvmem_cell_entry {
int bit_offset;
int nbits;
nvmem_cell_post_process_t read_post_process;
void *priv;
struct device_node *np;
struct nvmem_device *nvmem;
struct list_head node;
@ -471,6 +472,7 @@ static int nvmem_cell_info_to_nvmem_cell_entry_nodup(struct nvmem_device *nvmem,
cell->bytes = info->bytes;
cell->name = info->name;
cell->read_post_process = info->read_post_process;
cell->priv = info->priv;
cell->bit_offset = info->bit_offset;
cell->nbits = info->nbits;
@ -1568,7 +1570,7 @@ static int __nvmem_cell_read(struct nvmem_device *nvmem,
nvmem_shift_read_buffer_in_place(cell, buf);
if (cell->read_post_process) {
rc = cell->read_post_process(nvmem->priv, id, index,
rc = cell->read_post_process(cell->priv, id, index,
cell->offset, buf, cell->bytes);
if (rc)
return rc;

5
include/linux/nvmem-provider.h
View File

@ -20,7 +20,8 @@ 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, int index,
unsigned int offset, void *buf, size_t bytes);
unsigned int offset, void *buf,
size_t bytes);
enum nvmem_type {
NVMEM_TYPE_UNKNOWN = 0,
@ -56,6 +57,7 @@ struct nvmem_keepout {
* @np: Optional device_node pointer.
* @read_post_process: Callback for optional post processing of cell data
* on reads.
* @priv: Opaque data passed to the read_post_process hook.
*/
struct nvmem_cell_info {
const char *name;
@ -65,6 +67,7 @@ struct nvmem_cell_info {
unsigned int nbits;
struct device_node *np;
nvmem_cell_post_process_t read_post_process;
void *priv;
};
/**