]> git.sur5r.net Git - u-boot/commit
mtd: nand: add a shorthand to generate nand_ecc_caps structure
authorMasahiro Yamada <yamada.masahiro@socionext.com>
Tue, 21 Nov 2017 17:38:30 +0000 (02:38 +0900)
committerMasahiro Yamada <yamada.masahiro@socionext.com>
Tue, 28 Nov 2017 15:28:59 +0000 (00:28 +0900)
commita01549ba404a33636755473ea614d7e59bd525de
tree28cc65b3c62d7efafd31c9b100ceac72a31da25b
parent470c29d1c28d23bdd86456bc431b8f26f8727903
mtd: nand: add a shorthand to generate nand_ecc_caps structure

struct nand_ecc_caps was designed as flexible as possible to support
multiple stepsizes (like sunxi_nand.c).

So, we need to write multiple arrays even for the simplest case.
I guess many controllers support a single stepsize, so here is a
shorthand macro for the case.

It allows to describe like ...

NAND_ECC_CAPS_SINGLE(denali_pci_ecc_caps, denali_calc_ecc_bytes, 512, 8, 15);

... instead of

static const int denali_pci_ecc_strengths[] = {8, 15};
static const struct nand_ecc_step_info denali_pci_ecc_stepinfo = {
        .stepsize = 512,
        .strengths = denali_pci_ecc_strengths,
        .nstrengths = ARRAY_SIZE(denali_pci_ecc_strengths),
};
static const struct nand_ecc_caps denali_pci_ecc_caps = {
        .stepinfos = &denali_pci_ecc_stepinfo,
        .nstepinfos = 1,
        .calc_ecc_bytes = denali_calc_ecc_bytes,
};

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: a03c60178c181767ecfb26fb311a88742d228118]
include/linux/mtd/nand.h