[PATCH v12 0/3] add the GPMI controller driver for IMX23/IMX28
Koen Beel
koen.beel.barco at gmail.com
Fri Sep 9 15:56:57 EDT 2011
Tested-by: Koen Beel <koen.beel at barco.com>
On Thu, Sep 8, 2011 at 4:47 AM, Huang Shijie <b32955 at freescale.com> 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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