From 8702188ce5479729c81863680fb8ac7fffbd6b6a Mon Sep 17 00:00:00 2001 From: Pratyush Yadav Date: Sat, 26 Jun 2021 00:47:13 +0530 Subject: mtd: spi-nor-core: Introduce flash-specific fixup hooks Sometimes the information in a flash's SFDP tables is wrong. Sometimes some information just can't be expressed in the SFDP table. So, introduce the fixup hooks to allow tailoring settings for a specific flash. Three hooks are added: default_init, post_sfdp, and post_bfpt. These allow tweaking the flash settings at different point in the probe sequence. Since the hooks reside in nor->info, set that value just before the call to spi_nor_init_params(). The hooks and at what points they are executed mimics Linux's spi-nor framework. One major difference is that Linux puts the struct spi_nor_fixups in nor->info. This is not possible in U-Boot because the spi-nor-ids list is shared between spi-nor-core.c and spi-nor-tiny.c. Since spi-nor-tiny shouldn't have those fixup hooks populated, add a separate function that lets flashes populate their fixup hooks. Signed-off-by: Pratyush Yadav Reviewed-by: Jagan Teki --- include/linux/mtd/spi-nor.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index 47a2eced696..b2e9e0895b8 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -416,6 +416,7 @@ struct spi_flash { * @write_proto: the SPI protocol for write operations * @reg_proto the SPI protocol for read_reg/write_reg/erase operations * @cmd_buf: used by the write_reg + * @fixups: flash-specific fixup hooks. * @prepare: [OPTIONAL] do some preparations for the * read/write/erase/lock/unlock operations * @unprepare: [OPTIONAL] do some post work after the @@ -457,6 +458,7 @@ struct spi_nor { bool sst_write_second; u32 flags; u8 cmd_buf[SPI_NOR_MAX_CMD_SIZE]; + struct spi_nor_fixups *fixups; int (*setup)(struct spi_nor *nor, const struct flash_info *info, const struct spi_nor_flash_parameter *params, -- cgit v1.2.3