Remove obsolete #include <linux/config.h>
[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  * $Id: h720x-flash.c,v 1.12 2005/11/07 11:14:27 gleixner Exp $
6  *
7  * (C) 2002 Jungjun Kim <jungjun.kim@hynix.com>
8  *     2003 Thomas Gleixner <tglx@linutronix.de>
9  */
10
11 #include <linux/module.h>
12 #include <linux/types.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/errno.h>
16 #include <linux/slab.h>
17
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/map.h>
20 #include <linux/mtd/partitions.h>
21 #include <asm/hardware.h>
22 #include <asm/io.h>
23
24 static struct mtd_info *mymtd;
25
26 static struct map_info h720x_map = {
27         .name =         "H720X",
28         .bankwidth =    4,
29         .size =         FLASH_SIZE,
30         .phys =         FLASH_PHYS,
31 };
32
33 static struct mtd_partition h720x_partitions[] = {
34         {
35                 .name = "ArMon",
36                 .size = 0x00080000,
37                 .offset = 0,
38                 .mask_flags = MTD_WRITEABLE
39         },{
40                 .name = "Env",
41                 .size = 0x00040000,
42                 .offset = 0x00080000,
43                 .mask_flags = MTD_WRITEABLE
44         },{
45                 .name = "Kernel",
46                 .size = 0x00180000,
47                 .offset = 0x000c0000,
48                 .mask_flags = MTD_WRITEABLE
49         },{
50                 .name = "Ramdisk",
51                 .size = 0x00400000,
52                 .offset = 0x00240000,
53                 .mask_flags = MTD_WRITEABLE
54         },{
55                 .name = "jffs2",
56                 .size = MTDPART_SIZ_FULL,
57                 .offset = MTDPART_OFS_APPEND
58         }
59 };
60
61 #define NUM_PARTITIONS ARRAY_SIZE(h720x_partitions)
62
63 static int                   nr_mtd_parts;
64 static struct mtd_partition *mtd_parts;
65 static const char *probes[] = { "cmdlinepart", NULL };
66
67 /*
68  * Initialize FLASH support
69  */
70 int __init h720x_mtd_init(void)
71 {
72
73         char    *part_type = NULL;
74
75         h720x_map.virt = ioremap(FLASH_PHYS, FLASH_SIZE);
76
77         if (!h720x_map.virt) {
78                 printk(KERN_ERR "H720x-MTD: ioremap failed\n");
79                 return -EIO;
80         }
81
82         simple_map_init(&h720x_map);
83
84         // Probe for flash bankwidth 4
85         printk (KERN_INFO "H720x-MTD probing 32bit FLASH\n");
86         mymtd = do_map_probe("cfi_probe", &h720x_map);
87         if (!mymtd) {
88                 printk (KERN_INFO "H720x-MTD probing 16bit FLASH\n");
89             // Probe for bankwidth 2
90             h720x_map.bankwidth = 2;
91             mymtd = do_map_probe("cfi_probe", &h720x_map);
92         }
93
94         if (mymtd) {
95                 mymtd->owner = THIS_MODULE;
96
97 #ifdef CONFIG_MTD_PARTITIONS
98                 nr_mtd_parts = parse_mtd_partitions(mymtd, probes, &mtd_parts, 0);
99                 if (nr_mtd_parts > 0)
100                         part_type = "command line";
101 #endif
102                 if (nr_mtd_parts <= 0) {
103                         mtd_parts = h720x_partitions;
104                         nr_mtd_parts = NUM_PARTITIONS;
105                         part_type = "builtin";
106                 }
107                 printk(KERN_INFO "Using %s partition table\n", part_type);
108                 add_mtd_partitions(mymtd, mtd_parts, nr_mtd_parts);
109                 return 0;
110         }
111
112         iounmap((void *)h720x_map.virt);
113         return -ENXIO;
114 }
115
116 /*
117  * Cleanup
118  */
119 static void __exit h720x_mtd_cleanup(void)
120 {
121
122         if (mymtd) {
123                 del_mtd_partitions(mymtd);
124                 map_destroy(mymtd);
125         }
126
127         /* Free partition info, if commandline partition was used */
128         if (mtd_parts && (mtd_parts != h720x_partitions))
129                 kfree (mtd_parts);
130
131         if (h720x_map.virt) {
132                 iounmap((void *)h720x_map.virt);
133                 h720x_map.virt = 0;
134         }
135 }
136
137
138 module_init(h720x_mtd_init);
139 module_exit(h720x_mtd_cleanup);
140
141 MODULE_LICENSE("GPL");
142 MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
143 MODULE_DESCRIPTION("MTD map driver for Hynix evaluation boards");