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mtd: spi-nor: use spi-mem dirmap API

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Make use of the spi-mem direct mapping API to let advanced controllers
optimize read/write operations when they support direct mapping.

Based on the original patch by Boris Brezillon
<boris.brezillon@bootlin.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
This commit is contained in:
Sergei Shtylyov
2020-02-19 00:24:10 +03:00
committed by Tudor Ambarus
parent b7ad6be2ee
commit df5c21002c
2 changed files with 90 additions and 10 deletions
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6
include/linux/mtd/spi-nor.h
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@@ -580,6 +580,7 @@ struct flash_info;
* The structure includes legacy flash parameters and
* settings that can be overwritten by the spi_nor_fixups
* hooks, or dynamically when parsing the SFDP tables.
* @dirmap: pointers to struct spi_mem_dirmap_desc for reads/writes.
* @priv: the private data
*/
struct spi_nor {
@@ -606,6 +607,11 @@ struct spi_nor {
struct spi_nor_flash_parameter params;
struct {
struct spi_mem_dirmap_desc *rdesc;
struct spi_mem_dirmap_desc *wdesc;
} dirmap;
void *priv;
};