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0b7e7c7578
Deleted the old drivers. Broke the driver into separate files, for readability and to isolate hardware dependencies. Fixed bad block problems in the boot area for the i.MX23. At this writing, UBI can't handle MTDs larger than 2GiB. If the general use partition is larger than 2GiB, the driver will create sub-partitions, none of which are larger than 2GiB. Updated the default configs for the i.MX23 and i.MX28. Other, miscellaneous changes. Signed-off-by: Patrick Turley <patrick.turley@freescale.com>
124 lines
6.1 KiB
C
124 lines
6.1 KiB
C
/*
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* Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __INCLUDE_LINUX_DEVICE_H
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#define __INCLUDE_LINUX_DEVICE_H
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/* The name that links together the GPMI NFC driver data structures. */
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#define GPMI_NFC_DRIVER_NAME "gpmi-nfc"
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/* Resource names for the GPMI NFC driver. */
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#define GPMI_NFC_GPMI_REGS_ADDR_RES_NAME "GPMI NFC GPMI Registers"
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#define GPMI_NFC_GPMI_INTERRUPT_RES_NAME "GPMI NFC GPMI Interrupt"
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#define GPMI_NFC_BCH_REGS_ADDR_RES_NAME "GPMI NFC BCH Registers"
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#define GPMI_NFC_BCH_INTERRUPT_RES_NAME "GPMI NFC BCH Interrupt"
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#define GPMI_NFC_DMA_CHANNELS_RES_NAME "GPMI NFC DMA Channels"
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#define GPMI_NFC_DMA_INTERRUPT_RES_NAME "GPMI NFC DMA Interrupt"
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/**
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* struct gpmi_nfc_platform_data - GPMI NFC driver platform data.
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*
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* This structure communicates platform-specific information to the GPMI NFC
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* driver that can't be expressed as resources.
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*
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* @nfc_version: The version of the NFC hardware. This single number
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* represents a collection of NFC behaviors and
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* attributes the driver must comprehend. See the
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* driver code for details about what each version
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* means.
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* @boot_rom_version: The version of the Boot ROM. This single number
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* represents a collection of Boot ROM behaviors and
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* attributes the driver must comprehend. See the
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* driver code for details about what each version
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* means.
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* @clock_name: The name of the clock that drives the NFC.
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* @platform_init: A pointer to a function the driver will call to
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* initialize the platform (e.g., set up the pin mux).
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* The max_chip_count parameter is the maximum number
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* of chips the driver is to support. If the platform
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* can't be configured to support this number, the
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* function should print a message and return a
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* non-zero value . The driver will only view this as
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* an indication of failure and will choose its own
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* error code to return.
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* @platform_exit: A pointer to a function the driver will call to
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* exit the platform (e.g., free pins). The
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* max_chip_count parameter is same value passed to
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* the platform init function.
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* @min_prop_delay_in_ns: Minimum propagation delay of GPMI signals to and
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* from the NAND Flash device, in nanoseconds.
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* @max_prop_delay_in_ns: Maximum propagation delay of GPMI signals to and
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* from the NAND Flash device, in nanoseconds.
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* @max_chip_count: The maximum number of chips for which the driver
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* should configure the hardware. This value most
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* likely reflects the number of pins that are
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* connected to a NAND Flash device. If this is
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* greater than the SoC hardware can support, the
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* driver will print a message and fail to initialize.
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* @boot_area_size_in_bytes: The amount of space reserved for each boot area.
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* Note that some Boot ROMs call for multiple boot
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* areas. If this value is zero, the driver will not
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* construct special partitions for boot areas.
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* @partition_source_types: An array of strings that name sources of
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* partitioning information (e.g., the boot loader,
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* kernel command line, etc.). The function
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* parse_mtd_partitions() recognizes these names and
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* applies the appropriate "plugins" to discover
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* partitioning information. If any is found, it will
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* be applied to the "general use" MTD (it will NOT
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* override the boot area protection mechanism).
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* @partitions: An optional pointer to an array of partition
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* descriptions. If the driver finds no other
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* partitioning information, it will apply these
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* partitions to the "general use" MTD (they do NOT
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* override the boot area protection mechanism).
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* @partition_count: The number of elements in the partitions array.
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*/
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struct gpmi_nfc_platform_data {
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/* Version information. */
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unsigned int nfc_version;
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unsigned int boot_rom_version;
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/* SoC hardware information. */
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char *clock_name;
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int (*platform_init)(unsigned int max_chip_count);
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void (*platform_exit)(unsigned int max_chip_count);
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/* NAND Flash information. */
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unsigned int min_prop_delay_in_ns;
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unsigned int max_prop_delay_in_ns;
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unsigned int max_chip_count;
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/* Medium information. */
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uint32_t boot_area_size_in_bytes;
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const char **partition_source_types;
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struct mtd_partition *partitions;
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unsigned partition_count;
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};
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#endif
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