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