[PATCH V3 1/3] ARM: mxs: add GPMI support for imx23/imx28

[Huang Shijie]

hi:
Does some one have any comments about these three patches?

Thanks
Huang Shijie

> add gpmi support for imx23 and imx28.
>
> Signed-off-by: Huang Shijie <b32955 at freescale.com>
> ---
>  arch/arm/mach-mxs/Kconfig                 |    2 +
>  arch/arm/mach-mxs/include/mach/gpmi-nfc.h |   71 +++++++++++++++++++++++++++++
>  2 files changed, 73 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/mach-mxs/include/mach/gpmi-nfc.h
>
> diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
> index 4f6f174..8132f1a 100644
> --- a/arch/arm/mach-mxs/Kconfig
> +++ b/arch/arm/mach-mxs/Kconfig
> @@ -22,6 +22,7 @@ config MACH_MX23EVK
>  	select SOC_IMX23
>  	select MXS_HAVE_AMBA_DUART
>  	select MXS_HAVE_PLATFORM_AUART
> +	select MXS_HAVE_PLATFORM_GPMI_NFC
>  	select MXS_HAVE_PLATFORM_MXSFB
>  	default y
>  	help
> @@ -35,6 +36,7 @@ config MACH_MX28EVK
>  	select MXS_HAVE_PLATFORM_AUART
>  	select MXS_HAVE_PLATFORM_FEC
>  	select MXS_HAVE_PLATFORM_FLEXCAN
> +	select MXS_HAVE_PLATFORM_GPMI_NFC
>  	select MXS_HAVE_PLATFORM_MXSFB
>  	select MXS_OCOTP
>  	default y
> diff --git a/arch/arm/mach-mxs/include/mach/gpmi-nfc.h b/arch/arm/mach-mxs/include/mach/gpmi-nfc.h
> new file mode 100644
> index 0000000..25fc605
> --- /dev/null
> +++ b/arch/arm/mach-mxs/include/mach/gpmi-nfc.h
> @@ -0,0 +1,71 @@
> +/*
> + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +
> +#ifndef __INCLUDE_GPMI_NFC_H
> +#define __INCLUDE_GPMI_NFC_H
> +
> +/* The size of the resource is fixed. */
> +#define RES_SIZE	6
> +
> +/* Resource names for the GPMI NFC driver. */
> +#define GPMI_NFC_GPMI_REGS_ADDR_RES_NAME  "GPMI NFC GPMI Registers"
> +#define GPMI_NFC_GPMI_INTERRUPT_RES_NAME  "GPMI NFC GPMI Interrupt"
> +#define GPMI_NFC_BCH_REGS_ADDR_RES_NAME   "GPMI NFC BCH Registers"
> +#define GPMI_NFC_BCH_INTERRUPT_RES_NAME   "GPMI NFC BCH Interrupt"
> +#define GPMI_NFC_DMA_CHANNELS_RES_NAME    "GPMI NFC DMA Channels"
> +#define GPMI_NFC_DMA_INTERRUPT_RES_NAME   "GPMI NFC DMA Interrupt"
> +
> +/**
> + * struct gpmi_nfc_platform_data - GPMI NFC driver platform data.
> + *
> + * This structure communicates platform-specific information to the GPMI NFC
> + * driver that can't be expressed as resources.
> + *
> + * @platform_init:           A pointer to a function the driver will call to
> + *                           initialize the platform (e.g., set up the pin mux).
> + * @platform_exit:           A pointer to a function the driver will call to
> + *                           exit the platform (e.g., free pins).
> + * @min_prop_delay_in_ns:    Minimum propagation delay of GPMI signals to and
> + *                           from the NAND Flash device, in nanoseconds.
> + * @max_prop_delay_in_ns:    Maximum propagation delay of GPMI signals to and
> + *                           from the NAND Flash device, in nanoseconds.
> + * @max_chip_count:          The maximum number of chips for which the driver
> + *                           should configure the hardware. This value most
> + *                           likely reflects the number of pins that are
> + *                           connected to a NAND Flash device. If this is
> + *                           greater than the SoC hardware can support, the
> + *                           driver will print a message and fail to initialize.
> + * @partitions:              An optional pointer to an array of partition
> + *                           descriptions.
> + * @partition_count:         The number of elements in the partitions array.
> + */
> +struct gpmi_nfc_platform_data {
> +	/* SoC hardware information. */
> +	int		(*platform_init)(void);
> +	void		(*platform_exit)(void);
> +
> +	/* NAND Flash information. */
> +	unsigned int	min_prop_delay_in_ns;
> +	unsigned int	max_prop_delay_in_ns;
> +	unsigned int	max_chip_count;
> +
> +	/* Medium information. */
> +	struct mtd_partition *partitions;
> +	unsigned	partition_count;
> +};
> +#endif