Hi Paul, Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote on Mon, 04 Mar 2019 19:30:04 +0100: > On Mon, Mar 4, 2019 at 11:35 AM, Miquel Raynal <miquel.raynal@xxxxxxxxxxx> wrote: > > Hi Paul, > > > > Paul Cercueil <paul@xxxxxxxxxxxxxxx <mailto:paul@xxxxxxxxxxxxxxx>> > wrote on Sat, 9 Feb 2019 16:23:04 > > -0300: > > > >> The boot ROM of the JZ4725B SoC expects a specific OOB layout on the > >> NAND, so we use it unconditionally in the ingenic-nand driver. > >> >> Also add the jz4725b-bch driver to support the JZ4725B-specific BCH > >> hardware. > >> >> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx >> <mailto:paul@xxxxxxxxxxxxxxx>> > >> --- > >> >> Changes: > >> >> v2: Instead of forcing the OOB layout, leave it to the board code or > >> devicetree to decide if the jz4725b-specific layout should be >> used > >> or not. > >> >> v3: - Revert the change in v2, as the previous behaviour was >> correct. > >> - Also add support for the hardware BCH of the JZ4725B in this > >> patch. > >> >> v4: - Add MODULE_* macros > >> - Add tweaks suggested by upstream feedback > >> >> drivers/mtd/nand/raw/ingenic/Kconfig | 10 + > >> drivers/mtd/nand/raw/ingenic/Makefile | 1 + > >> drivers/mtd/nand/raw/ingenic/ingenic_nand.c | 48 ++++- > >> drivers/mtd/nand/raw/ingenic/jz4725b_bch.c | 292 >> ++++++++++++++++++++++++++++ > >> 4 files changed, 350 insertions(+), 1 deletion(-) > >> create mode 100644 drivers/mtd/nand/raw/ingenic/jz4725b_bch.c > >> > > > [...] > > > >> +static int jz4725b_calculate(struct ingenic_ecc *bch, > >> + struct ingenic_ecc_params *params, > >> + const u8 *buf, u8 *ecc_code) > >> +{ > >> + int ret; > >> + > >> + mutex_lock(&bch->lock); > >> + ret = jz4725b_bch_init(bch, params, true); > > > > I really don't like this bch_init name. A BCH initialization is what > is > > supposed to be done only once (probably at boot time), can you find a > > better name or a better organization of the correct/calculate path? > > jz4725b_bch_setup() maybe? Unless I am not understanding what this does, I don't get why you would need to do this setup everytime you want to use the ECC engine. Are you sure this is needed?
