Commit de12c969 authored by Michael Walle's avatar Michael Walle Committed by Greg Kroah-Hartman
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nvmem: core: allow to modify a cell before adding it 



Provide a way to modify a cell before it will get added. This is useful
to attach a custom post processing hook via a layout.

Signed-off-by: default avatarMichael Walle <michael@walle.cc>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230404172148.82422-18-srinivas.kandagatla@linaro.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 345ec382

drivers/nvmem/core.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -695,6 +695,7 @@ static int nvmem_validate_keepouts(struct nvmem_device *nvmem) 




static int nvmem_add_cells_from_of(struct nvmem_device *nvmem)

static int nvmem_add_cells_from_of(struct nvmem_device *nvmem)

{

{

	struct nvmem_layout *layout = nvmem->layout;

	struct device *dev = &nvmem->dev;

	struct device *dev = &nvmem->dev;

	struct device_node *child;

	struct device_node *child;

	const __be32 *addr;

	const __be32 *addr;
@@ -724,6 +725,9 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem) 




		info.np = of_node_get(child);

		info.np = of_node_get(child);





		if (layout && layout->fixup_cell_info)

			layout->fixup_cell_info(nvmem, layout, &info);



		ret = nvmem_add_one_cell(nvmem, &info);

		ret = nvmem_add_one_cell(nvmem, &info);

		kfree(info.name);

		kfree(info.name);

		if (ret) {

		if (ret) {

include/linux/nvmem-provider.h

+5 −0
Original line number Original line Diff line number Diff line
@@ -155,6 +155,8 @@ struct nvmem_cell_table { 
 * @add_cells:		Will be called if a nvmem device is found which

 * @add_cells:		Will be called if a nvmem device is found which

 *			has this layout. The function will add layout

 *			has this layout. The function will add layout

 *			specific cells with nvmem_add_one_cell().

 *			specific cells with nvmem_add_one_cell().

 * @fixup_cell_info:	Will be called before a cell is added. Can be

 *			used to modify the nvmem_cell_info.

 * @owner:		Pointer to struct module.

 * @owner:		Pointer to struct module.

 * @node:		List node.

 * @node:		List node.

 *

 *
@@ -168,6 +170,9 @@ struct nvmem_layout { 
	const struct of_device_id *of_match_table;

	const struct of_device_id *of_match_table;

	int (*add_cells)(struct device *dev, struct nvmem_device *nvmem,

	int (*add_cells)(struct device *dev, struct nvmem_device *nvmem,

			 struct nvmem_layout *layout);

			 struct nvmem_layout *layout);

	void (*fixup_cell_info)(struct nvmem_device *nvmem,

				struct nvmem_layout *layout,

				struct nvmem_cell_info *cell);





	/* private */

	/* private */

	struct module *owner;

	struct module *owner;