Tested-by: Koen Beel <redacted>

On Thu, Sep 8, 2011 at 4:47 AM, Huang Shijie [off-list ref] wrote:

The patch set is based on Artem's tree:
? ? ? ?http://git.infradead.org/users/dedekind/l2-mtd-2.6.git

The general-purpose media interface(GPMI) controller is a flexible interface
to up to several NAND flashs.

The Bose Ray-Choudhury Hocquenghem(BCH) module is a hardware ECC accelerator.

With the help of BCH, the GPMI controller can choose to do the hardware ECC or
not.

This driver is a _pure_ MTD NAND controller driver now.


The driver depends on another GPMI-NAND device patch set, you can find them at :
? ? ? ?[1] http://marc.info/?l=linux-arm-kernel&m=131416901319573&w=2
? ? ? ?[2] http://marc.info/?l=linux-arm-kernel&m=131416912319668&w=2
? ? ? ?[3] http://marc.info/?l=linux-arm-kernel&m=131416891119504&w=2
? ? ? ?[4] http://marc.info/?l=linux-arm-kernel&m=131416896219539&w=2

Test environment:
? ? ? ?Using imx23 and imx28 boards for test.

? ? ? ?imx23 :
? ? ? ?console=ttyAMA0,115200 mtdparts=gpmi-nfc:20m(boot),-(user)
? ? ? ?Tested by USB boot and NAND boot.

? ? ? ?imx28 :
? ? ? ?#console=ttyAMA0,115200 root=/dev/mmcblk0p3 rw rootwait
? ? ? ?Tested by SD card boot mode.

v11 --> v12:
? ? ? ?[0] remove debug log level mechanism.
? ? ? ?[1] replace BUG/BUG_ON() with pr_err()
? ? ? ?[2] fix compiling warnings
? ? ? ?[3] optimize the calculation of BCH's geometry.

v10 --> v11:
? ? ? ?[0] tiny fixes.
? ? ? ?[1] optimize the calculation of BCH's geometry.
? ? ? ?[2] renames

v9 --> v10:
? ? ? ?[0] fix DMA timeout bug by adding custom routine for reset blocks.
? ? ? ?[1] remove mil{}
? ? ? ?[2] add gpmi_hw_ecclayout.
? ? ? ?[3] add ecc_write_oob() again to prohibit the mtd ioctl : MEMWRITEOOB
? ? ? ?[4] change pr_info to dev_dbg() or pr_err().
? ? ? ?[5] merge the all the dump functions into gpmi_dump_info().
? ? ? ?[6] remove parse_mtd_partitions(), and use mtd_device_parse_register().
? ? ? ?[7] move the the debug control code from gpmi-nand.h to gpmi-nand.c
? ? ? ?[8] renames
? ? ? ?[9] others

v8 --> v9:
? ? ? ?[0] remove the ONFI nand code, it will cause the DMA timeout in the ONFI nand.
? ? ? ?[1] remove sysfs entry.
? ? ? ?[2] remove kernel command parameter.
? ? ? ?[3] report to ecclayout that we will use all the page + OOB.
? ? ? ? ? ? ? ?remove the ->ecc_write_oob().
? ? ? ?[4] add our own block_markbad() hook.
? ? ? ?[5] rename some functions from mil_* to gpmi_*.
? ? ? ?[6] replace the __raw_readl/__raw_writel to readl/writel.
? ? ? ?[7] others

v7 --> v8:
? ? ? ?[0] rename the name from `GPMI-NFC` to `GPMI-NAND`
? ? ? ?[1] remove the `hal` layer, and change it to function library.
? ? ? ?[2] Do not use ~0 to initialize the DMA address.
? ? ? ?[3] fix the issue : several DMA channels share the same IRQ.
? ? ? ?[4] DMA timeout issue. I use the .config created by `make mxs_defconfig`
? ? ? ? ? ?and the bug never occur. It seems some other module has impact to the
? ? ? ? ? ?DMA.
? ? ? ? ? ?Of course, you should enable the UBIFS,MTD_CHAR and GPMI for
? ? ? ? ? ?the .config. You can also disable the SPIN-LOCK/MUTEX debug features.
? ? ? ?[5] add function to print out the GPMI registers.
? ? ? ?[6] others.

v6 --> v7:
? ? ? ?[0] remove the function wrapping the clock.
? ? ? ?[1] use the module_param() for debugging.
? ? ? ?[2] use the new interface of MTD partitions.
? ? ? ? ? ? ? ?replace add_mtd_partitions() with mtd_device_register().
? ? ? ?[3] use pr_info() to print log.
? ? ? ?[4] add `__devinit` for some functions, etc.
? ? ? ?[5] add `gpmi_nfc` to control the GPMI-NFC driver's initialization.
? ? ? ?[6] others.

v5 --> v6:
? ? ? ?[0] split out the IMX23/IMX28 arch code to separate patches.
? ? ? ?[1] fix bug : missing empty item in the end of platform_id array.
? ? ? ?[2] inconsistent identation.
? ? ? ?[3] others

v4 --> v5:
? ? ? ?[0] rename the files.
? ? ? ?[1] fix PM bug
? ? ? ?[2] remove the rom_helper code, and move the necessary initialization code
? ? ? ? ? ? ? ?to the main file.
? ? ? ?[3] change the macros from CPU_IS_* to GPMI_IS_*
? ? ? ?[4] remove the default partition layout init code. revert back the
? ? ? ? ? ? ? ?partition parsing command line code.
? ? ? ?[5] others

v3 --> v4:
? ? ? ?[0] use the nand_ids{} as the nand database, drop my own database.
? ? ? ?[1] remove the patch for DMA enginer, Shawn will submit his own version.
? ? ? ?[2] use the platform_id to distinguish different Archs.
? ? ? ?[3] fix the strange coding style.
? ? ? ?[4] others.

v2 --> v3:
? ? ? ?[0] merge the imx23 and imx28 into one file(including the header file).
? ? ? ?[1] remove the unuse registers in the headers.
? ? ? ?[2] fix DMA bugs
? ? ? ?[3] add bus width field to nand_attr{}
? ? ? ?[4] others

v1 --> v2:
? ? ? ?[0] merge the common files into the gpmi-nfc-main.c
? ? ? ?[1] change the code to get the clock.
? ? ? ?[2] remove the timing in the nand_device_info{}
? ? ? ?[3] fix DMA errors
? ? ? ?[4] add the nand_device_info.[ch] to generic code
? ? ? ?[5] use the chip->onfi_version for the ONFI nand
? ? ? ?[6] useless init
? ? ? ?[7] others

Huang Shijie (3):
?MTD : add the common code for GPMI-NAND controller driver
?MTD : add helper functions library and header files for GPMI NAND
? ?driver
?MTD : add GPMI-NAND driver in the config and Makefile

?drivers/mtd/nand/Kconfig ? ? ? ? ? ? ? | ? 13 +
?drivers/mtd/nand/Makefile ? ? ? ? ? ? ?| ? ?1 +
?drivers/mtd/nand/gpmi-nand/Makefile ? ?| ? ?3 +
?drivers/mtd/nand/gpmi-nand/bch-regs.h ?| ? 84 ++
?drivers/mtd/nand/gpmi-nand/gpmi-lib.c ?| 1057 +++++++++++++++++++++
?drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 1619 ++++++++++++++++++++++++++++++++
?drivers/mtd/nand/gpmi-nand/gpmi-nand.h | ?273 ++++++
?drivers/mtd/nand/gpmi-nand/gpmi-regs.h | ?172 ++++
?8 files changed, 3222 insertions(+), 0 deletions(-)
?create mode 100644 drivers/mtd/nand/gpmi-nand/Makefile
?create mode 100644 drivers/mtd/nand/gpmi-nand/bch-regs.h
?create mode 100644 drivers/mtd/nand/gpmi-nand/gpmi-lib.c
?create mode 100644 drivers/mtd/nand/gpmi-nand/gpmi-nand.c
?create mode 100644 drivers/mtd/nand/gpmi-nand/gpmi-nand.h
?create mode 100644 drivers/mtd/nand/gpmi-nand/gpmi-regs.h



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