Commit | Line | Data |
---|---|---|
4020f2d7 AD |
1 | /* |
2 | * tifm_core.c - TI FlashMedia driver | |
3 | * | |
4 | * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/tifm.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/idr.h> | |
15 | ||
16 | #define DRIVER_NAME "tifm_core" | |
4552f0cb | 17 | #define DRIVER_VERSION "0.8" |
4020f2d7 | 18 | |
3540af8f | 19 | static struct workqueue_struct *workqueue; |
4020f2d7 AD |
20 | static DEFINE_IDR(tifm_adapter_idr); |
21 | static DEFINE_SPINLOCK(tifm_adapter_lock); | |
22 | ||
e23f2b8a | 23 | static const char *tifm_media_type_name(unsigned char type, unsigned char nt) |
4020f2d7 | 24 | { |
e23f2b8a AD |
25 | const char *card_type_name[3][3] = { |
26 | { "SmartMedia/xD", "MemoryStick", "MMC/SD" }, | |
27 | { "XD", "MS", "SD"}, | |
28 | { "xd", "ms", "sd"} | |
29 | }; | |
30 | ||
31 | if (nt > 2 || type < 1 || type > 3) | |
32 | return NULL; | |
33 | return card_type_name[nt][type - 1]; | |
4020f2d7 AD |
34 | } |
35 | ||
e23f2b8a | 36 | static int tifm_dev_match(struct tifm_dev *sock, struct tifm_device_id *id) |
4020f2d7 | 37 | { |
e23f2b8a | 38 | if (sock->type == id->type) |
4020f2d7 | 39 | return 1; |
e23f2b8a AD |
40 | return 0; |
41 | } | |
42 | ||
43 | static int tifm_bus_match(struct device *dev, struct device_driver *drv) | |
44 | { | |
45 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
46 | struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver, | |
47 | driver); | |
48 | struct tifm_device_id *ids = fm_drv->id_table; | |
49 | ||
50 | if (ids) { | |
51 | while (ids->type) { | |
52 | if (tifm_dev_match(sock, ids)) | |
53 | return 1; | |
54 | ++ids; | |
55 | } | |
56 | } | |
57 | return 0; | |
4020f2d7 AD |
58 | } |
59 | ||
7eff2e7a | 60 | static int tifm_uevent(struct device *dev, struct kobj_uevent_env *env) |
4020f2d7 | 61 | { |
e23f2b8a | 62 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
4020f2d7 | 63 | |
7eff2e7a | 64 | if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1))) |
4020f2d7 AD |
65 | return -ENOMEM; |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
8dc4a61e AD |
70 | static int tifm_device_probe(struct device *dev) |
71 | { | |
72 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
73 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, | |
74 | driver); | |
75 | int rc = -ENODEV; | |
76 | ||
77 | get_device(dev); | |
78 | if (dev->driver && drv->probe) { | |
79 | rc = drv->probe(sock); | |
80 | if (!rc) | |
81 | return 0; | |
82 | } | |
83 | put_device(dev); | |
84 | return rc; | |
85 | } | |
86 | ||
87 | static void tifm_dummy_event(struct tifm_dev *sock) | |
88 | { | |
89 | return; | |
90 | } | |
91 | ||
92 | static int tifm_device_remove(struct device *dev) | |
93 | { | |
94 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
95 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, | |
96 | driver); | |
97 | ||
98 | if (dev->driver && drv->remove) { | |
99 | sock->card_event = tifm_dummy_event; | |
100 | sock->data_event = tifm_dummy_event; | |
101 | drv->remove(sock); | |
102 | sock->dev.driver = NULL; | |
103 | } | |
104 | ||
105 | put_device(dev); | |
106 | return 0; | |
107 | } | |
108 | ||
41d78f74 AD |
109 | #ifdef CONFIG_PM |
110 | ||
111 | static int tifm_device_suspend(struct device *dev, pm_message_t state) | |
112 | { | |
91f8d011 | 113 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
8dc4a61e AD |
114 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, |
115 | driver); | |
41d78f74 | 116 | |
8dc4a61e | 117 | if (dev->driver && drv->suspend) |
91f8d011 | 118 | return drv->suspend(sock, state); |
41d78f74 AD |
119 | return 0; |
120 | } | |
121 | ||
122 | static int tifm_device_resume(struct device *dev) | |
123 | { | |
91f8d011 | 124 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
8dc4a61e AD |
125 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, |
126 | driver); | |
41d78f74 | 127 | |
8dc4a61e | 128 | if (dev->driver && drv->resume) |
91f8d011 | 129 | return drv->resume(sock); |
41d78f74 AD |
130 | return 0; |
131 | } | |
132 | ||
133 | #else | |
134 | ||
135 | #define tifm_device_suspend NULL | |
136 | #define tifm_device_resume NULL | |
137 | ||
138 | #endif /* CONFIG_PM */ | |
139 | ||
4e64f223 AD |
140 | static ssize_t type_show(struct device *dev, struct device_attribute *attr, |
141 | char *buf) | |
142 | { | |
143 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
144 | return sprintf(buf, "%x", sock->type); | |
145 | } | |
146 | ||
147 | static struct device_attribute tifm_dev_attrs[] = { | |
148 | __ATTR(type, S_IRUGO, type_show, NULL), | |
149 | __ATTR_NULL | |
150 | }; | |
151 | ||
4020f2d7 | 152 | static struct bus_type tifm_bus_type = { |
91f8d011 AD |
153 | .name = "tifm", |
154 | .dev_attrs = tifm_dev_attrs, | |
155 | .match = tifm_bus_match, | |
156 | .uevent = tifm_uevent, | |
157 | .probe = tifm_device_probe, | |
158 | .remove = tifm_device_remove, | |
159 | .suspend = tifm_device_suspend, | |
160 | .resume = tifm_device_resume | |
4020f2d7 AD |
161 | }; |
162 | ||
7dd817d0 | 163 | static void tifm_free(struct device *dev) |
4020f2d7 | 164 | { |
7dd817d0 | 165 | struct tifm_adapter *fm = container_of(dev, struct tifm_adapter, dev); |
4020f2d7 | 166 | |
4020f2d7 AD |
167 | kfree(fm); |
168 | } | |
169 | ||
170 | static struct class tifm_adapter_class = { | |
171 | .name = "tifm_adapter", | |
7dd817d0 | 172 | .dev_release = tifm_free |
4020f2d7 AD |
173 | }; |
174 | ||
6113ed73 AD |
175 | struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets, |
176 | struct device *dev) | |
4020f2d7 AD |
177 | { |
178 | struct tifm_adapter *fm; | |
179 | ||
6113ed73 AD |
180 | fm = kzalloc(sizeof(struct tifm_adapter) |
181 | + sizeof(struct tifm_dev*) * num_sockets, GFP_KERNEL); | |
4020f2d7 | 182 | if (fm) { |
7dd817d0 TJ |
183 | fm->dev.class = &tifm_adapter_class; |
184 | fm->dev.parent = dev; | |
185 | device_initialize(&fm->dev); | |
6113ed73 AD |
186 | spin_lock_init(&fm->lock); |
187 | fm->num_sockets = num_sockets; | |
4020f2d7 AD |
188 | } |
189 | return fm; | |
190 | } | |
191 | EXPORT_SYMBOL(tifm_alloc_adapter); | |
192 | ||
3540af8f | 193 | int tifm_add_adapter(struct tifm_adapter *fm) |
4020f2d7 AD |
194 | { |
195 | int rc; | |
196 | ||
197 | if (!idr_pre_get(&tifm_adapter_idr, GFP_KERNEL)) | |
198 | return -ENOMEM; | |
199 | ||
200 | spin_lock(&tifm_adapter_lock); | |
201 | rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id); | |
202 | spin_unlock(&tifm_adapter_lock); | |
6113ed73 AD |
203 | if (rc) |
204 | return rc; | |
205 | ||
7dd817d0 TJ |
206 | snprintf(fm->dev.bus_id, BUS_ID_SIZE, "tifm%u", fm->id); |
207 | rc = device_add(&fm->dev); | |
6113ed73 AD |
208 | if (rc) { |
209 | spin_lock(&tifm_adapter_lock); | |
210 | idr_remove(&tifm_adapter_idr, fm->id); | |
211 | spin_unlock(&tifm_adapter_lock); | |
4020f2d7 | 212 | } |
6113ed73 | 213 | |
4020f2d7 AD |
214 | return rc; |
215 | } | |
216 | EXPORT_SYMBOL(tifm_add_adapter); | |
217 | ||
218 | void tifm_remove_adapter(struct tifm_adapter *fm) | |
219 | { | |
6113ed73 AD |
220 | unsigned int cnt; |
221 | ||
3540af8f | 222 | flush_workqueue(workqueue); |
6113ed73 AD |
223 | for (cnt = 0; cnt < fm->num_sockets; ++cnt) { |
224 | if (fm->sockets[cnt]) | |
225 | device_unregister(&fm->sockets[cnt]->dev); | |
226 | } | |
4020f2d7 AD |
227 | |
228 | spin_lock(&tifm_adapter_lock); | |
229 | idr_remove(&tifm_adapter_idr, fm->id); | |
230 | spin_unlock(&tifm_adapter_lock); | |
7dd817d0 | 231 | device_del(&fm->dev); |
4020f2d7 AD |
232 | } |
233 | EXPORT_SYMBOL(tifm_remove_adapter); | |
234 | ||
6113ed73 AD |
235 | void tifm_free_adapter(struct tifm_adapter *fm) |
236 | { | |
7dd817d0 | 237 | put_device(&fm->dev); |
6113ed73 AD |
238 | } |
239 | EXPORT_SYMBOL(tifm_free_adapter); | |
240 | ||
4020f2d7 AD |
241 | void tifm_free_device(struct device *dev) |
242 | { | |
2428a8fe AD |
243 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
244 | kfree(sock); | |
4020f2d7 AD |
245 | } |
246 | EXPORT_SYMBOL(tifm_free_device); | |
247 | ||
2428a8fe AD |
248 | struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id, |
249 | unsigned char type) | |
4020f2d7 | 250 | { |
2428a8fe AD |
251 | struct tifm_dev *sock = NULL; |
252 | ||
253 | if (!tifm_media_type_name(type, 0)) | |
254 | return sock; | |
4020f2d7 | 255 | |
2428a8fe AD |
256 | sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL); |
257 | if (sock) { | |
258 | spin_lock_init(&sock->lock); | |
259 | sock->type = type; | |
260 | sock->socket_id = id; | |
261 | sock->card_event = tifm_dummy_event; | |
262 | sock->data_event = tifm_dummy_event; | |
8e02f858 | 263 | |
7dd817d0 | 264 | sock->dev.parent = fm->dev.parent; |
2428a8fe | 265 | sock->dev.bus = &tifm_bus_type; |
7dd817d0 | 266 | sock->dev.dma_mask = fm->dev.parent->dma_mask; |
2428a8fe AD |
267 | sock->dev.release = tifm_free_device; |
268 | ||
269 | snprintf(sock->dev.bus_id, BUS_ID_SIZE, | |
270 | "tifm_%s%u:%u", tifm_media_type_name(type, 2), | |
271 | fm->id, id); | |
272 | printk(KERN_INFO DRIVER_NAME | |
273 | ": %s card detected in socket %u:%u\n", | |
274 | tifm_media_type_name(type, 0), fm->id, id); | |
4020f2d7 | 275 | } |
2428a8fe | 276 | return sock; |
4020f2d7 AD |
277 | } |
278 | EXPORT_SYMBOL(tifm_alloc_device); | |
279 | ||
280 | void tifm_eject(struct tifm_dev *sock) | |
281 | { | |
282 | struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent); | |
283 | fm->eject(fm, sock); | |
284 | } | |
285 | EXPORT_SYMBOL(tifm_eject); | |
286 | ||
287 | int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, | |
288 | int direction) | |
289 | { | |
290 | return pci_map_sg(to_pci_dev(sock->dev.parent), sg, nents, direction); | |
291 | } | |
292 | EXPORT_SYMBOL(tifm_map_sg); | |
293 | ||
294 | void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, | |
295 | int direction) | |
296 | { | |
297 | pci_unmap_sg(to_pci_dev(sock->dev.parent), sg, nents, direction); | |
298 | } | |
299 | EXPORT_SYMBOL(tifm_unmap_sg); | |
300 | ||
3540af8f AD |
301 | void tifm_queue_work(struct work_struct *work) |
302 | { | |
303 | queue_work(workqueue, work); | |
304 | } | |
305 | EXPORT_SYMBOL(tifm_queue_work); | |
306 | ||
4020f2d7 AD |
307 | int tifm_register_driver(struct tifm_driver *drv) |
308 | { | |
309 | drv->driver.bus = &tifm_bus_type; | |
4020f2d7 AD |
310 | |
311 | return driver_register(&drv->driver); | |
312 | } | |
313 | EXPORT_SYMBOL(tifm_register_driver); | |
314 | ||
315 | void tifm_unregister_driver(struct tifm_driver *drv) | |
316 | { | |
317 | driver_unregister(&drv->driver); | |
318 | } | |
319 | EXPORT_SYMBOL(tifm_unregister_driver); | |
320 | ||
321 | static int __init tifm_init(void) | |
322 | { | |
3540af8f | 323 | int rc; |
4020f2d7 | 324 | |
3540af8f AD |
325 | workqueue = create_freezeable_workqueue("tifm"); |
326 | if (!workqueue) | |
327 | return -ENOMEM; | |
328 | ||
329 | rc = bus_register(&tifm_bus_type); | |
330 | ||
331 | if (rc) | |
332 | goto err_out_wq; | |
333 | ||
334 | rc = class_register(&tifm_adapter_class); | |
335 | if (!rc) | |
336 | return 0; | |
337 | ||
338 | bus_unregister(&tifm_bus_type); | |
339 | ||
340 | err_out_wq: | |
341 | destroy_workqueue(workqueue); | |
4020f2d7 AD |
342 | |
343 | return rc; | |
344 | } | |
345 | ||
346 | static void __exit tifm_exit(void) | |
347 | { | |
348 | class_unregister(&tifm_adapter_class); | |
349 | bus_unregister(&tifm_bus_type); | |
3540af8f | 350 | destroy_workqueue(workqueue); |
4020f2d7 AD |
351 | } |
352 | ||
353 | subsys_initcall(tifm_init); | |
354 | module_exit(tifm_exit); | |
355 | ||
356 | MODULE_LICENSE("GPL"); | |
357 | MODULE_AUTHOR("Alex Dubov"); | |
358 | MODULE_DESCRIPTION("TI FlashMedia core driver"); | |
359 | MODULE_LICENSE("GPL"); | |
360 | MODULE_VERSION(DRIVER_VERSION); |