1 /* 2 * Copyright © 2010 ST Microelectronics 3 * Shiraz Hashim <shiraz.linux.kernel@gmail.com> 4 * 5 * This file is licensed under the terms of the GNU General Public 6 * License version 2. This program is licensed "as is" without any 7 * warranty of any kind, whether express or implied. 8 */ 9 10 #ifndef __MTD_SPEAR_SMI_H 11 #define __MTD_SPEAR_SMI_H 12 13 #include <linux/types.h> 14 #include <linux/mtd/mtd.h> 15 #include <linux/mtd/partitions.h> 16 #include <linux/platform_device.h> 17 #include <linux/of.h> 18 19 /* max possible slots for serial-nor flash chip in the SMI controller */ 20 #define MAX_NUM_FLASH_CHIP 4 21 22 /* macro to define partitions for flash devices */ 23 #define DEFINE_PARTS(n, of, s) \ 24 { \ 25 .name = n, \ 26 .offset = of, \ 27 .size = s, \ 28 } 29 30 /** 31 * struct spear_smi_flash_info - platform structure for passing flash 32 * information 33 * 34 * name: name of the serial nor flash for identification 35 * mem_base: the memory base on which the flash is mapped 36 * size: size of the flash in bytes 37 * partitions: parition details 38 * nr_partitions: number of partitions 39 * fast_mode: whether flash supports fast mode 40 */ 41 42 struct spear_smi_flash_info { 43 char *name; 44 unsigned long mem_base; 45 unsigned long size; 46 struct mtd_partition *partitions; 47 int nr_partitions; 48 u8 fast_mode; 49 }; 50 51 /** 52 * struct spear_smi_plat_data - platform structure for configuring smi 53 * 54 * clk_rate: clk rate at which SMI must operate 55 * num_flashes: number of flashes present on board 56 * board_flash_info: specific details of each flash present on board 57 */ 58 struct spear_smi_plat_data { 59 unsigned long clk_rate; 60 int num_flashes; 61 struct spear_smi_flash_info *board_flash_info; 62 struct device_node *np[MAX_NUM_FLASH_CHIP]; 63 }; 64 65 #endif /* __MTD_SPEAR_SMI_H */ 66