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 */