Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart
[linux-2.6] / drivers / mtd / maps / cdb89712.c
1 /*
2  * Flash on Cirrus CDB89712
3  *
4  * $Id: cdb89712.c,v 1.11 2005/11/07 11:14:26 gleixner Exp $
5  */
6
7 #include <linux/module.h>
8 #include <linux/types.h>
9 #include <linux/kernel.h>
10 #include <linux/ioport.h>
11 #include <linux/init.h>
12 #include <asm/io.h>
13 #include <asm/arch/hardware.h>
14 #include <linux/mtd/mtd.h>
15 #include <linux/mtd/map.h>
16 #include <linux/mtd/partitions.h>
17
18
19
20
21 static struct mtd_info *flash_mtd;
22
23 struct map_info cdb89712_flash_map = {
24         .name = "flash",
25         .size = FLASH_SIZE,
26         .bankwidth = FLASH_WIDTH,
27         .phys = FLASH_START,
28 };
29
30 struct resource cdb89712_flash_resource = {
31         .name =   "Flash",
32         .start =  FLASH_START,
33         .end =    FLASH_START + FLASH_SIZE - 1,
34         .flags =  IORESOURCE_IO | IORESOURCE_BUSY,
35 };
36
37 static int __init init_cdb89712_flash (void)
38 {
39         int err;
40
41         if (request_resource (&ioport_resource, &cdb89712_flash_resource)) {
42                 printk(KERN_NOTICE "Failed to reserve Cdb89712 FLASH space\n");
43                 err = -EBUSY;
44                 goto out;
45         }
46
47         cdb89712_flash_map.virt = ioremap(FLASH_START, FLASH_SIZE);
48         if (!cdb89712_flash_map.virt) {
49                 printk(KERN_NOTICE "Failed to ioremap Cdb89712 FLASH space\n");
50                 err = -EIO;
51                 goto out_resource;
52         }
53         simple_map_init(&cdb89712_flash_map);
54         flash_mtd = do_map_probe("cfi_probe", &cdb89712_flash_map);
55         if (!flash_mtd) {
56                 flash_mtd = do_map_probe("map_rom", &cdb89712_flash_map);
57                 if (flash_mtd)
58                         flash_mtd->erasesize = 0x10000;
59         }
60         if (!flash_mtd) {
61                 printk("FLASH probe failed\n");
62                 err = -ENXIO;
63                 goto out_ioremap;
64         }
65
66         flash_mtd->owner = THIS_MODULE;
67
68         if (add_mtd_device(flash_mtd)) {
69                 printk("FLASH device addition failed\n");
70                 err = -ENOMEM;
71                 goto out_probe;
72         }
73
74         return 0;
75
76 out_probe:
77         map_destroy(flash_mtd);
78         flash_mtd = 0;
79 out_ioremap:
80         iounmap((void *)cdb89712_flash_map.virt);
81 out_resource:
82         release_resource (&cdb89712_flash_resource);
83 out:
84         return err;
85 }
86
87
88
89
90
91 static struct mtd_info *sram_mtd;
92
93 struct map_info cdb89712_sram_map = {
94         .name = "SRAM",
95         .size = SRAM_SIZE,
96         .bankwidth = SRAM_WIDTH,
97         .phys = SRAM_START,
98 };
99
100 struct resource cdb89712_sram_resource = {
101         .name =   "SRAM",
102         .start =  SRAM_START,
103         .end =    SRAM_START + SRAM_SIZE - 1,
104         .flags =  IORESOURCE_IO | IORESOURCE_BUSY,
105 };
106
107 static int __init init_cdb89712_sram (void)
108 {
109         int err;
110
111         if (request_resource (&ioport_resource, &cdb89712_sram_resource)) {
112                 printk(KERN_NOTICE "Failed to reserve Cdb89712 SRAM space\n");
113                 err = -EBUSY;
114                 goto out;
115         }
116
117         cdb89712_sram_map.virt = ioremap(SRAM_START, SRAM_SIZE);
118         if (!cdb89712_sram_map.virt) {
119                 printk(KERN_NOTICE "Failed to ioremap Cdb89712 SRAM space\n");
120                 err = -EIO;
121                 goto out_resource;
122         }
123         simple_map_init(&cdb89712_sram_map);
124         sram_mtd = do_map_probe("map_ram", &cdb89712_sram_map);
125         if (!sram_mtd) {
126                 printk("SRAM probe failed\n");
127                 err = -ENXIO;
128                 goto out_ioremap;
129         }
130
131         sram_mtd->owner = THIS_MODULE;
132         sram_mtd->erasesize = 16;
133
134         if (add_mtd_device(sram_mtd)) {
135                 printk("SRAM device addition failed\n");
136                 err = -ENOMEM;
137                 goto out_probe;
138         }
139
140         return 0;
141
142 out_probe:
143         map_destroy(sram_mtd);
144         sram_mtd = 0;
145 out_ioremap:
146         iounmap((void *)cdb89712_sram_map.virt);
147 out_resource:
148         release_resource (&cdb89712_sram_resource);
149 out:
150         return err;
151 }
152
153
154
155
156
157
158
159 static struct mtd_info *bootrom_mtd;
160
161 struct map_info cdb89712_bootrom_map = {
162         .name = "BootROM",
163         .size = BOOTROM_SIZE,
164         .bankwidth = BOOTROM_WIDTH,
165         .phys = BOOTROM_START,
166 };
167
168 struct resource cdb89712_bootrom_resource = {
169         .name =   "BootROM",
170         .start =  BOOTROM_START,
171         .end =    BOOTROM_START + BOOTROM_SIZE - 1,
172         .flags =  IORESOURCE_IO | IORESOURCE_BUSY,
173 };
174
175 static int __init init_cdb89712_bootrom (void)
176 {
177         int err;
178
179         if (request_resource (&ioport_resource, &cdb89712_bootrom_resource)) {
180                 printk(KERN_NOTICE "Failed to reserve Cdb89712 BOOTROM space\n");
181                 err = -EBUSY;
182                 goto out;
183         }
184
185         cdb89712_bootrom_map.virt = ioremap(BOOTROM_START, BOOTROM_SIZE);
186         if (!cdb89712_bootrom_map.virt) {
187                 printk(KERN_NOTICE "Failed to ioremap Cdb89712 BootROM space\n");
188                 err = -EIO;
189                 goto out_resource;
190         }
191         simple_map_init(&cdb89712_bootrom_map);
192         bootrom_mtd = do_map_probe("map_rom", &cdb89712_bootrom_map);
193         if (!bootrom_mtd) {
194                 printk("BootROM probe failed\n");
195                 err = -ENXIO;
196                 goto out_ioremap;
197         }
198
199         bootrom_mtd->owner = THIS_MODULE;
200         bootrom_mtd->erasesize = 0x10000;
201
202         if (add_mtd_device(bootrom_mtd)) {
203                 printk("BootROM device addition failed\n");
204                 err = -ENOMEM;
205                 goto out_probe;
206         }
207
208         return 0;
209
210 out_probe:
211         map_destroy(bootrom_mtd);
212         bootrom_mtd = 0;
213 out_ioremap:
214         iounmap((void *)cdb89712_bootrom_map.virt);
215 out_resource:
216         release_resource (&cdb89712_bootrom_resource);
217 out:
218         return err;
219 }
220
221
222
223
224
225 static int __init init_cdb89712_maps(void)
226 {
227
228         printk(KERN_INFO "Cirrus CDB89712 MTD mappings:\n  Flash 0x%x at 0x%x\n  SRAM 0x%x at 0x%x\n  BootROM 0x%x at 0x%x\n",
229                FLASH_SIZE, FLASH_START, SRAM_SIZE, SRAM_START, BOOTROM_SIZE, BOOTROM_START);
230
231         init_cdb89712_flash();
232         init_cdb89712_sram();
233         init_cdb89712_bootrom();
234
235         return 0;
236 }
237
238
239 static void __exit cleanup_cdb89712_maps(void)
240 {
241         if (sram_mtd) {
242                 del_mtd_device(sram_mtd);
243                 map_destroy(sram_mtd);
244                 iounmap((void *)cdb89712_sram_map.virt);
245                 release_resource (&cdb89712_sram_resource);
246         }
247
248         if (flash_mtd) {
249                 del_mtd_device(flash_mtd);
250                 map_destroy(flash_mtd);
251                 iounmap((void *)cdb89712_flash_map.virt);
252                 release_resource (&cdb89712_flash_resource);
253         }
254
255         if (bootrom_mtd) {
256                 del_mtd_device(bootrom_mtd);
257                 map_destroy(bootrom_mtd);
258                 iounmap((void *)cdb89712_bootrom_map.virt);
259                 release_resource (&cdb89712_bootrom_resource);
260         }
261 }
262
263 module_init(init_cdb89712_maps);
264 module_exit(cleanup_cdb89712_maps);
265
266 MODULE_AUTHOR("Ray L");
267 MODULE_DESCRIPTION("ARM CDB89712 map driver");
268 MODULE_LICENSE("GPL");