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