[ARM] cdb89712,clps7500,h720x: avoid namespace clash for FLASH_* constants
[linux-3.10.git] / drivers / mtd / maps / h720x-flash.c
1 /*
2  * Flash memory access on Hynix GMS30C7201/HMS30C7202 based
3  * evaluation boards
4  *
5  * (C) 2002 Jungjun Kim <jungjun.kim@hynix.com>
6  *     2003 Thomas Gleixner <tglx@linutronix.de>
7  */
8
9 #include <linux/module.h>
10 #include <linux/types.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/errno.h>
14 #include <linux/slab.h>
15
16 #include <linux/mtd/mtd.h>
17 #include <linux/mtd/map.h>
18 #include <linux/mtd/partitions.h>
19 #include <mach/hardware.h>
20 #include <asm/io.h>
21
22 static struct mtd_info *mymtd;
23
24 static struct map_info h720x_map = {
25         .name =         "H720X",
26         .bankwidth =    4,
27         .size =         H720X_FLASH_SIZE,
28         .phys =         H720X_FLASH_PHYS,
29 };
30
31 static struct mtd_partition h720x_partitions[] = {
32         {
33                 .name = "ArMon",
34                 .size = 0x00080000,
35                 .offset = 0,
36                 .mask_flags = MTD_WRITEABLE
37         },{
38                 .name = "Env",
39                 .size = 0x00040000,
40                 .offset = 0x00080000,
41                 .mask_flags = MTD_WRITEABLE
42         },{
43                 .name = "Kernel",
44                 .size = 0x00180000,
45                 .offset = 0x000c0000,
46                 .mask_flags = MTD_WRITEABLE
47         },{
48                 .name = "Ramdisk",
49                 .size = 0x00400000,
50                 .offset = 0x00240000,
51                 .mask_flags = MTD_WRITEABLE
52         },{
53                 .name = "jffs2",
54                 .size = MTDPART_SIZ_FULL,
55                 .offset = MTDPART_OFS_APPEND
56         }
57 };
58
59 #define NUM_PARTITIONS ARRAY_SIZE(h720x_partitions)
60
61 static int                   nr_mtd_parts;
62 static struct mtd_partition *mtd_parts;
63 static const char *probes[] = { "cmdlinepart", NULL };
64
65 /*
66  * Initialize FLASH support
67  */
68 int __init h720x_mtd_init(void)
69 {
70
71         char    *part_type = NULL;
72
73         h720x_map.virt = ioremap(h720x_map.phys, h720x_map.size);
74
75         if (!h720x_map.virt) {
76                 printk(KERN_ERR "H720x-MTD: ioremap failed\n");
77                 return -EIO;
78         }
79
80         simple_map_init(&h720x_map);
81
82         // Probe for flash bankwidth 4
83         printk (KERN_INFO "H720x-MTD probing 32bit FLASH\n");
84         mymtd = do_map_probe("cfi_probe", &h720x_map);
85         if (!mymtd) {
86                 printk (KERN_INFO "H720x-MTD probing 16bit FLASH\n");
87             // Probe for bankwidth 2
88             h720x_map.bankwidth = 2;
89             mymtd = do_map_probe("cfi_probe", &h720x_map);
90         }
91
92         if (mymtd) {
93                 mymtd->owner = THIS_MODULE;
94
95 #ifdef CONFIG_MTD_PARTITIONS
96                 nr_mtd_parts = parse_mtd_partitions(mymtd, probes, &mtd_parts, 0);
97                 if (nr_mtd_parts > 0)
98                         part_type = "command line";
99 #endif
100                 if (nr_mtd_parts <= 0) {
101                         mtd_parts = h720x_partitions;
102                         nr_mtd_parts = NUM_PARTITIONS;
103                         part_type = "builtin";
104                 }
105                 printk(KERN_INFO "Using %s partition table\n", part_type);
106                 add_mtd_partitions(mymtd, mtd_parts, nr_mtd_parts);
107                 return 0;
108         }
109
110         iounmap((void *)h720x_map.virt);
111         return -ENXIO;
112 }
113
114 /*
115  * Cleanup
116  */
117 static void __exit h720x_mtd_cleanup(void)
118 {
119
120         if (mymtd) {
121                 del_mtd_partitions(mymtd);
122                 map_destroy(mymtd);
123         }
124
125         /* Free partition info, if commandline partition was used */
126         if (mtd_parts && (mtd_parts != h720x_partitions))
127                 kfree (mtd_parts);
128
129         if (h720x_map.virt) {
130                 iounmap((void *)h720x_map.virt);
131                 h720x_map.virt = 0;
132         }
133 }
134
135
136 module_init(h720x_mtd_init);
137 module_exit(h720x_mtd_cleanup);
138
139 MODULE_LICENSE("GPL");
140 MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
141 MODULE_DESCRIPTION("MTD map driver for Hynix evaluation boards");