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[209.132.180.67]) by mx.google.com with ESMTP id z22si8691771plo.202.2019.02.03.08.22.38; Sun, 03 Feb 2019 08:22:54 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@crapouillou.net header.s=mail header.b=ks4iRHfQ; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=crapouillou.net Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727761AbfBCO4t (ORCPT + 99 others); Sun, 3 Feb 2019 09:56:49 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:46512 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726584AbfBCO4t (ORCPT ); Sun, 3 Feb 2019 09:56:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1549205806; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wNKZuuIMT/F4ZlDDRuayhE2fRI2B3Oamtag4L65TEag=; b=ks4iRHfQpngU7+iiY2hvJg/sReAsYlMQTk8IKA0my9ORE2TxIu+EJbQgjlq/+MyBaWa2gF /ldSYQRDIaOIQiOe190oSxFKbyV+rpity7EHL/FV1QZkM5kE6TS17Wi1bkNRFZTqRoyXzT Negla4dyGxtq7k0pjtSwOu6wuzoeDDM= Date: Sun, 03 Feb 2019 11:56:32 -0300 From: Paul Cercueil Subject: Re: [PATCH v2 9/9] mtd: rawnand: jz4780-bch: Add support for the JZ4740 To: Boris Brezillon Cc: David Woodhouse , Brian Norris , Marek Vasut , Richard Weinberger , Rob Herring , Mark Rutland , Miquel Raynal , Harvey Hunt , Mathieu Malaterre , linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Message-Id: <1549205792.1588.0@crapouillou.net> In-Reply-To: <20190203151604.23061e2a@bbrezillon> References: <20190202231926.2444-1-paul@crapouillou.net> <20190202231926.2444-10-paul@crapouillou.net> <20190203083505.4dc52278@bbrezillon> <1549202293.1950.2@crapouillou.net> <20190203151604.23061e2a@bbrezillon> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le dim. 3 f=E9vr. 2019 =E0 11:16, Boris Brezillon =20 a =E9crit : > On Sun, 03 Feb 2019 10:58:13 -0300 > Paul Cercueil wrote: >=20 >> Le dim. 3 f=E9vr. 2019 =E0 4:35, Boris Brezillon=20 >> >> a =E9crit : >> > On Sat, 2 Feb 2019 20:19:26 -0300 >> > Paul Cercueil wrote: >> > >> >> Add the backend code for the jz4780-bch driver to support the=20 >> JZ4740 >> >> SoC from Ingenic. >> >> >> >> Signed-off-by: Paul Cercueil >> >> --- >> >> >> >> Changes: >> >> >> >> v2: New patch >> >> >> >> drivers/mtd/nand/raw/ingenic/Makefile | 2 +- >> >> drivers/mtd/nand/raw/ingenic/jz4740_bch.c | 173 >> >> ++++++++++++++++++ >> >> .../mtd/nand/raw/ingenic/jz4780_bch_common.c | 1 + >> >> .../nand/raw/ingenic/jz4780_bch_internal.h | 1 + >> >> 4 files changed, 176 insertions(+), 1 deletion(-) >> >> create mode 100644 drivers/mtd/nand/raw/ingenic/jz4740_bch.c >> >> >> >> diff --git a/drivers/mtd/nand/raw/ingenic/Makefile >> >> b/drivers/mtd/nand/raw/ingenic/Makefile >> >> index f38b467490cf..d16c96113a93 100644 >> >> --- a/drivers/mtd/nand/raw/ingenic/Makefile >> >> +++ b/drivers/mtd/nand/raw/ingenic/Makefile >> >> @@ -1,3 +1,3 @@ >> >> obj-$(CONFIG_MTD_NAND_JZ4740) +=3D jz4740_nand.o >> >> obj-$(CONFIG_MTD_NAND_JZ4780) +=3D jz4780_nand.o=20 >> jz4780_bch_common.o >> >> \ >> >> - jz4780_bch.o jz4725b_bch.o >> >> + jz4780_bch.o jz4725b_bch.o jz4740_bch.o >> > >> > I still don't see the point of the jz4780_bch_common/jz47xxx_bch >> > separation. You seem to always embed all objects anyway, so you=20 >> can >> > just put the code for both engines in the same source file and=20 >> decide >> > which one to use based on the compat (which you already do=20 >> anyway). >>=20 >> Each SoC has a different set of registers for the BCH hardware. I=20 >> can >> try to >> cram everything into one file, but it won't be that much cleaner. >=20 > Then maybe they deserve separate drivers/modules. >=20 > BTW, didn't you say that one IP uses Reed-Salomon instead of BCH. I'd > suggest prefixing structs and functions with jz47xx_ecc instead of > jz47xx_bch and naming the common part jz47xx_ecc.c to reflect that. Would it be a good idea to make a generic ECC API that the jz47xx_nand driver could use? Then the three jz47xx BCH codepaths could be separate drivers that register with the generic ECC core. =