tree 1a7443be42230c2719956bcfb79fe4db43444cf5
parent d37b4f37ea40243ad3a126a152920339189afb52
author Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com> 1660899668 +0800
committer Tom Rini <trini@konsulko.com> 1663085320 -0400

spi-mem: Add dirmap API from Linux

This adds the dirmap API originally introduced in
Linux commit aa167f3fed0c
("spi: spi-mem: Add a new API to support direct mapping").
This also includes several follow-up patches and fixes.

Changes from Linux include:
* Added Kconfig option
* Changed struct device to struct udevice
* Changed struct spi_mem to struct spi_slave

This patch is obtained from the following patch
https://patchwork.ozlabs.org/project/uboot/patch/20210205043924.149504-3-seanga2@gmail.com/
The corresponding Linux kernel SHA1 is aa167f3fed0c.

Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>