diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/mtd/maps/cdb89712.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/mtd/maps/cdb89712.c')
-rw-r--r-- | drivers/mtd/maps/cdb89712.c | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/drivers/mtd/maps/cdb89712.c b/drivers/mtd/maps/cdb89712.c new file mode 100644 index 000000000000..ab15dac2f936 --- /dev/null +++ b/drivers/mtd/maps/cdb89712.c | |||
@@ -0,0 +1,268 @@ | |||
1 | /* | ||
2 | * Flash on Cirrus CDB89712 | ||
3 | * | ||
4 | * $Id: cdb89712.c,v 1.10 2004/11/04 13:24:14 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"); | ||