From patchwork Wed Jun 29 07:54:40 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [V4,1/3] ARM: mxs: add GPMI-NFC support for imx23/imx28 From: Huang Shijie X-Patchwork-Id: 102524 Message-Id: <1309334082-9501-2-git-send-email-b32955@freescale.com> To: Cc: w.sang@pengutronix.de, thierry.nolf.barco@gmail.com, Huang Shijie , linux-mtd@lists.infradead.org, u.kleine-koenig@pengutronix.de, linux-arm-kernel@lists.infradead.org, LW@KARO-electronics.de Date: Wed, 29 Jun 2011 15:54:40 +0800 add GPMI-NFC support for imx23 and imx28. Signed-off-by: Huang Shijie --- 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 1d3985f..a5b753a 100644 --- a/arch/arm/mach-mxs/Kconfig +++ b/arch/arm/mach-mxs/Kconfig @@ -32,6 +32,7 @@ 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_MXS_MMC select MXS_HAVE_PLATFORM_MXSFB help @@ -46,6 +47,7 @@ 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_MXS_MMC select MXS_HAVE_PLATFORM_MXSFB select MXS_OCOTP 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