From mboxrd@z Thu Jan  1 00:00:00 1970
From: b32955@freescale.com (Huang Shijie)
Date: Tue, 26 Nov 2013 14:32:51 +0800
Subject: [PATCH 0/4] mtd: spi-nor: add a new framework for SPI NOR
Message-ID: <1385447575-23773-1-git-send-email-b32955@freescale.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

1.) Why add a new framework for SPI NOR?
  The SPI-NOR controller such as Freescale's Quadspi controller is working
  in a different way from the SPI bus. It should knows the NOR commands to
  find the right LUT sequence. Unfortunately, the current code can not meet
  this requirement.

2.) How does this patch set do?
   This patch set adds a new spi-nor layer.
   Before this patch, the layer is like:

                   MTD
         ------------------------
                  m25p80
         ------------------------
	       spi bus driver
         ------------------------
	        SPI NOR chip

   After this patch, the layer is like:
                   MTD
         ------------------------
                  spi-nor
         ------------------------
                  m25p80
         ------------------------
	       spi bus driver
         ------------------------
	       SPI NOR chip

  With the spi-nor controller driver(Freescale Quadspi), it looks like:
                   MTD
         ------------------------
                  spi-nor
         ------------------------
                fsl-quadspi
         ------------------------
	       SPI NOR chip

3.) more details
   This patch set adds a new data structrue spi_nor{}, clones most the common
  code to spi-nor.c. Make the m25p80.c use the new APIs.

4.) TODO list:
   3.1) add the new spi_nor_device{} for the spi-nor controller's device.
   3.2) add the Freescale Quadspi driver.

	       
Huang Shijie (4):
  mtd: spi-nor: move the SPI NOR commands to a new header file
  mtd: spi-nor: add a new data structrue spi_nor{}
  mtd: spi-nor: add the framework for SPI NOR
  mtd: m25p80: use the new spi-nor APIs

 drivers/mtd/Kconfig           |    2 +
 drivers/mtd/Makefile          |    1 +
 drivers/mtd/devices/Kconfig   |    2 +-
 drivers/mtd/devices/m25p80.c  | 1249 +++--------------------------------------
 drivers/mtd/spi-nor/Kconfig   |    6 +
 drivers/mtd/spi-nor/Makefile  |    1 +
 drivers/mtd/spi-nor/spi-nor.c | 1057 ++++++++++++++++++++++++++++++++++
 include/linux/mtd/spi-nor.h   |  101 ++++
 8 files changed, 1239 insertions(+), 1180 deletions(-)
 create mode 100644 drivers/mtd/spi-nor/Kconfig
 create mode 100644 drivers/mtd/spi-nor/Makefile
 create mode 100644 drivers/mtd/spi-nor/spi-nor.c
 create mode 100644 include/linux/mtd/spi-nor.h

-- 
1.7.2.rc3