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x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200527_013423_377822_9C1A2012 X-CRM114-Status: GOOD ( 16.69 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Vignesh Raghavendra , Tudor Ambarus , Richard Weinberger , Rob Herring , linux-mtd@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Boris Brezillon wrote on Wed, 27 May 2020 00:59:28 +0200: > On Tue, 26 May 2020 21:56:21 +0200 > Miquel Raynal wrote: > > > Now that the misleading mix between ECC engine type and OOB placement > > has been addressed, add a new enumeration to properly define ECC types > > (also called provider or mode). > > > > Signed-off-by: Miquel Raynal > > Reviewed-by: Boris Brezillon > > --- > > drivers/mtd/nand/raw/nand_base.c | 7 +++++++ > > include/linux/mtd/rawnand.h | 16 ++++++++++++++++ > > 2 files changed, 23 insertions(+) > > > > diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c > > index 515cd4681660..5c6ab5b93270 100644 > > --- a/drivers/mtd/nand/raw/nand_base.c > > +++ b/drivers/mtd/nand/raw/nand_base.c > > @@ -5018,6 +5018,13 @@ static const char * const nand_ecc_modes[] = { > > [NAND_ECC_ON_DIE] = "on-die", > > }; > > > > +static const char * const nand_ecc_engine_providers[] = { > > This table is not used here, are you sure it should be introduced now? > > > + [NAND_ECC_ENGINE_NONE] = "none", > > + [NAND_ECC_ENGINE_SOFT] = "soft", > > + [NAND_ECC_ENGINE_CONTROLLER] = "hw", > > ^ "on-controller" ? This would break DT backward compatibility, I am afraid I cannot do that. Honnestly, I find "hw" good enough because "on-controller" is also too restrictive. What about an external (non-pipelined) engine like the one I am about to introduce? > > > + [NAND_ECC_ENGINE_ON_DIE] = "on-die", > > +}; > > + > > static const char * const nand_ecc_placement[] = { > > [NAND_ECC_PLACEMENT_INTERLEAVED] = "interleaved", > > }; > > diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h > > index dc909fb977c7..a2078c5f3d21 100644 > > --- a/include/linux/mtd/rawnand.h > > +++ b/include/linux/mtd/rawnand.h > > @@ -92,6 +92,22 @@ enum nand_ecc_mode { > > NAND_ECC_ON_DIE, > > }; > > > > +/** > > + * enum nand_ecc_engine_type - NAND ECC engine type/provider > > + * @NAND_ECC_ENGINE_INVALID: Invalid value > > + * @NAND_ECC_ENGINE_NONE: No ECC correction > > + * @NAND_ECC_ENGINE_SOFT: Software ECC correction > > + * @NAND_ECC_ENGINE_CONTROLLER: Hardware controller ECC correction > > + * @NAND_ECC_ENGINE_ON_DIE: On chip hardware ECC correction > > + */ > > +enum nand_ecc_engine_type { > > + NAND_ECC_ENGINE_INVALID, > > + NAND_ECC_ENGINE_NONE, > > + NAND_ECC_ENGINE_SOFT, > > + NAND_ECC_ENGINE_CONTROLLER, > > + NAND_ECC_ENGINE_ON_DIE, > > +}; > > + > > /** > > * enum nand_ecc_placement - NAND ECC placement > > * @NAND_ECC_PLACEMENT_FREE: The driver can decide where to put ECC bytes. > ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/