linux-kernel - [PATCH 0/4] mtd: nand: OMAP: Add support to use ELM as error correction module

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Message-ID: <1349274589-11389-1-git-send-email-avinashphilip@ti.com>
Date:	Wed, 3 Oct 2012 19:59:45 +0530
From:	"Philip, Avinash" <avinashphilip@...com>
To:	<dwmw2@...radead.org>, <artem.bityutskiy@...ux.intel.com>,
	<tony@...mide.com>
CC:	<afzal@...com>, <linux-mtd@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-doc@...r.kernel.org>, <devicetree-discuss@...ts.ozlabs.org>,
	<ivan.djelic@...rot.com>, "Philip, Avinash" <avinashphilip@...com>
Subject: [PATCH 0/4] mtd: nand: OMAP: Add support to use ELM as error correction module

Adds support to use ELM as BCH 4 & 8 bit error correction module and
adds support for single shot read_page and write_page functions

Platforms containing the ELM module can be used to correct errors
reported by BCH 4, 8 & 16 bit ECC scheme. For now only 4 & 8 bit
support is added.

BCH 4 & 8 bit error detection support is already available in mainline
kernel and works with software error correction.

This series is based on top of [1] &[2]

1. linux-next/master
2. linux-omap-dt/for_3.7/dts_part2

Nand driver tested for BCH 4 & 8 bit error correction per sector.
This being tested by introducing bit errors at multiple sectors inside page.

Philip, Avinash (4):
  mtd: nand: omap2: Update nerrors using ecc.strength
  mtd: devices: elm: Add support for ELM error correction
  ARM: OMAP2: gpmc: Add support for BCH ECC scheme
  mtd: nand: omap2: Add data correction support

 arch/arm/mach-omap2/gpmc.c                   |  120 +++++++-
 arch/arm/plat-omap/include/plat/gpmc.h       |    1 +
 drivers/mtd/devices/Makefile                 |    4 +-
 drivers/mtd/devices/elm.c                    |  446 ++++++++++++++++++++++++++
 drivers/mtd/nand/omap2.c                     |  368 +++++++++++++++++++--
 include/linux/platform_data/elm.h            |   64 ++++
 include/linux/platform_data/mtd-nand-omap2.h |    1 +
 7 files changed, 958 insertions(+), 46 deletions(-)
 create mode 100644 drivers/mtd/devices/elm.c
 create mode 100644 include/linux/platform_data/elm.h

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