1 /* 2 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License along 15 * with this program; if not, write to the Free Software Foundation, Inc., 16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 17 */ 18 19 #ifndef __MACH_MXS_GPMI_NAND_H__ 20 #define __MACH_MXS_GPMI_NAND_H__ 21 22 /* The size of the resources is fixed. */ 23 #define GPMI_NAND_RES_SIZE 6 24 25 /* Resource names for the GPMI NAND driver. */ 26 #define GPMI_NAND_GPMI_REGS_ADDR_RES_NAME "GPMI NAND GPMI Registers" 27 #define GPMI_NAND_GPMI_INTERRUPT_RES_NAME "GPMI NAND GPMI Interrupt" 28 #define GPMI_NAND_BCH_REGS_ADDR_RES_NAME "GPMI NAND BCH Registers" 29 #define GPMI_NAND_BCH_INTERRUPT_RES_NAME "GPMI NAND BCH Interrupt" 30 #define GPMI_NAND_DMA_CHANNELS_RES_NAME "GPMI NAND DMA Channels" 31 #define GPMI_NAND_DMA_INTERRUPT_RES_NAME "GPMI NAND DMA Interrupt" 32 33 /** 34 * struct gpmi_nand_platform_data - GPMI NAND driver platform data. 35 * 36 * This structure communicates platform-specific information to the GPMI NAND 37 * driver that can't be expressed as resources. 38 * 39 * @platform_init: A pointer to a function the driver will call to 40 * initialize the platform (e.g., set up the pin mux). 41 * @min_prop_delay_in_ns: Minimum propagation delay of GPMI signals to and 42 * from the NAND Flash device, in nanoseconds. 43 * @max_prop_delay_in_ns: Maximum propagation delay of GPMI signals to and 44 * from the NAND Flash device, in nanoseconds. 45 * @max_chip_count: The maximum number of chips for which the driver 46 * should configure the hardware. This value most 47 * likely reflects the number of pins that are 48 * connected to a NAND Flash device. If this is 49 * greater than the SoC hardware can support, the 50 * driver will print a message and fail to initialize. 51 * @partitions: An optional pointer to an array of partition 52 * descriptions. 53 * @partition_count: The number of elements in the partitions array. 54 */ 55 struct gpmi_nand_platform_data { 56 /* SoC hardware information. */ 57 int (*platform_init)(void); 58 59 /* NAND Flash information. */ 60 unsigned int min_prop_delay_in_ns; 61 unsigned int max_prop_delay_in_ns; 62 unsigned int max_chip_count; 63 64 /* Medium information. */ 65 struct mtd_partition *partitions; 66 unsigned partition_count; 67 }; 68 #endif 69