Commit | Line | Data |
---|---|---|
d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
4020f2d7 AD |
2 | /* |
3 | * tifm_core.c - TI FlashMedia driver | |
4 | * | |
5 | * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> | |
4020f2d7 AD |
6 | */ |
7 | ||
8 | #include <linux/tifm.h> | |
5a0e3ad6 | 9 | #include <linux/slab.h> |
4020f2d7 AD |
10 | #include <linux/init.h> |
11 | #include <linux/idr.h> | |
eb12a679 | 12 | #include <linux/module.h> |
4020f2d7 AD |
13 | |
14 | #define DRIVER_NAME "tifm_core" | |
4552f0cb | 15 | #define DRIVER_VERSION "0.8" |
4020f2d7 | 16 | |
3540af8f | 17 | static struct workqueue_struct *workqueue; |
4020f2d7 AD |
18 | static DEFINE_IDR(tifm_adapter_idr); |
19 | static DEFINE_SPINLOCK(tifm_adapter_lock); | |
20 | ||
e23f2b8a | 21 | static const char *tifm_media_type_name(unsigned char type, unsigned char nt) |
4020f2d7 | 22 | { |
e23f2b8a AD |
23 | const char *card_type_name[3][3] = { |
24 | { "SmartMedia/xD", "MemoryStick", "MMC/SD" }, | |
25 | { "XD", "MS", "SD"}, | |
26 | { "xd", "ms", "sd"} | |
27 | }; | |
28 | ||
29 | if (nt > 2 || type < 1 || type > 3) | |
30 | return NULL; | |
31 | return card_type_name[nt][type - 1]; | |
4020f2d7 AD |
32 | } |
33 | ||
e23f2b8a | 34 | static int tifm_dev_match(struct tifm_dev *sock, struct tifm_device_id *id) |
4020f2d7 | 35 | { |
e23f2b8a | 36 | if (sock->type == id->type) |
4020f2d7 | 37 | return 1; |
e23f2b8a AD |
38 | return 0; |
39 | } | |
40 | ||
41 | static int tifm_bus_match(struct device *dev, struct device_driver *drv) | |
42 | { | |
43 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
44 | struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver, | |
45 | driver); | |
46 | struct tifm_device_id *ids = fm_drv->id_table; | |
47 | ||
48 | if (ids) { | |
49 | while (ids->type) { | |
50 | if (tifm_dev_match(sock, ids)) | |
51 | return 1; | |
52 | ++ids; | |
53 | } | |
54 | } | |
55 | return 0; | |
4020f2d7 AD |
56 | } |
57 | ||
2a81ada3 | 58 | static int tifm_uevent(const struct device *dev, struct kobj_uevent_env *env) |
4020f2d7 | 59 | { |
2a81ada3 | 60 | const struct tifm_dev *sock = container_of_const(dev, struct tifm_dev, dev); |
4020f2d7 | 61 | |
7eff2e7a | 62 | if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1))) |
4020f2d7 AD |
63 | return -ENOMEM; |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
8dc4a61e AD |
68 | static int tifm_device_probe(struct device *dev) |
69 | { | |
70 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
71 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, | |
72 | driver); | |
73 | int rc = -ENODEV; | |
74 | ||
75 | get_device(dev); | |
76 | if (dev->driver && drv->probe) { | |
77 | rc = drv->probe(sock); | |
78 | if (!rc) | |
79 | return 0; | |
80 | } | |
81 | put_device(dev); | |
82 | return rc; | |
83 | } | |
84 | ||
85 | static void tifm_dummy_event(struct tifm_dev *sock) | |
86 | { | |
87 | return; | |
88 | } | |
89 | ||
fc7a6209 | 90 | static void tifm_device_remove(struct device *dev) |
8dc4a61e AD |
91 | { |
92 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
93 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, | |
94 | driver); | |
95 | ||
96 | if (dev->driver && drv->remove) { | |
97 | sock->card_event = tifm_dummy_event; | |
98 | sock->data_event = tifm_dummy_event; | |
99 | drv->remove(sock); | |
100 | sock->dev.driver = NULL; | |
101 | } | |
102 | ||
103 | put_device(dev); | |
8dc4a61e AD |
104 | } |
105 | ||
41d78f74 AD |
106 | #ifdef CONFIG_PM |
107 | ||
108 | static int tifm_device_suspend(struct device *dev, pm_message_t state) | |
109 | { | |
91f8d011 | 110 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
8dc4a61e AD |
111 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, |
112 | driver); | |
41d78f74 | 113 | |
8dc4a61e | 114 | if (dev->driver && drv->suspend) |
91f8d011 | 115 | return drv->suspend(sock, state); |
41d78f74 AD |
116 | return 0; |
117 | } | |
118 | ||
119 | static int tifm_device_resume(struct device *dev) | |
120 | { | |
91f8d011 | 121 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
8dc4a61e AD |
122 | struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, |
123 | driver); | |
41d78f74 | 124 | |
8dc4a61e | 125 | if (dev->driver && drv->resume) |
91f8d011 | 126 | return drv->resume(sock); |
41d78f74 AD |
127 | return 0; |
128 | } | |
129 | ||
130 | #else | |
131 | ||
132 | #define tifm_device_suspend NULL | |
133 | #define tifm_device_resume NULL | |
134 | ||
135 | #endif /* CONFIG_PM */ | |
136 | ||
4e64f223 AD |
137 | static ssize_t type_show(struct device *dev, struct device_attribute *attr, |
138 | char *buf) | |
139 | { | |
140 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); | |
141 | return sprintf(buf, "%x", sock->type); | |
142 | } | |
06cf261b | 143 | static DEVICE_ATTR_RO(type); |
4e64f223 | 144 | |
06cf261b GKH |
145 | static struct attribute *tifm_dev_attrs[] = { |
146 | &dev_attr_type.attr, | |
147 | NULL, | |
4e64f223 | 148 | }; |
06cf261b | 149 | ATTRIBUTE_GROUPS(tifm_dev); |
4e64f223 | 150 | |
bd860309 | 151 | static const struct bus_type tifm_bus_type = { |
91f8d011 | 152 | .name = "tifm", |
06cf261b | 153 | .dev_groups = tifm_dev_groups, |
91f8d011 AD |
154 | .match = tifm_bus_match, |
155 | .uevent = tifm_uevent, | |
156 | .probe = tifm_device_probe, | |
157 | .remove = tifm_device_remove, | |
158 | .suspend = tifm_device_suspend, | |
159 | .resume = tifm_device_resume | |
4020f2d7 AD |
160 | }; |
161 | ||
7dd817d0 | 162 | static void tifm_free(struct device *dev) |
4020f2d7 | 163 | { |
7dd817d0 | 164 | struct tifm_adapter *fm = container_of(dev, struct tifm_adapter, dev); |
4020f2d7 | 165 | |
4020f2d7 AD |
166 | kfree(fm); |
167 | } | |
168 | ||
a7478b3d | 169 | static const struct class tifm_adapter_class = { |
4020f2d7 | 170 | .name = "tifm_adapter", |
7dd817d0 | 171 | .dev_release = tifm_free |
4020f2d7 AD |
172 | }; |
173 | ||
6113ed73 AD |
174 | struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets, |
175 | struct device *dev) | |
4020f2d7 AD |
176 | { |
177 | struct tifm_adapter *fm; | |
178 | ||
aee1bbf6 | 179 | fm = kzalloc(struct_size(fm, sockets, num_sockets), GFP_KERNEL); |
4020f2d7 | 180 | if (fm) { |
7dd817d0 TJ |
181 | fm->dev.class = &tifm_adapter_class; |
182 | fm->dev.parent = dev; | |
183 | device_initialize(&fm->dev); | |
6113ed73 AD |
184 | spin_lock_init(&fm->lock); |
185 | fm->num_sockets = num_sockets; | |
4020f2d7 AD |
186 | } |
187 | return fm; | |
188 | } | |
189 | EXPORT_SYMBOL(tifm_alloc_adapter); | |
190 | ||
3540af8f | 191 | int tifm_add_adapter(struct tifm_adapter *fm) |
4020f2d7 AD |
192 | { |
193 | int rc; | |
194 | ||
57f2667c | 195 | idr_preload(GFP_KERNEL); |
4020f2d7 | 196 | spin_lock(&tifm_adapter_lock); |
57f2667c TH |
197 | rc = idr_alloc(&tifm_adapter_idr, fm, 0, 0, GFP_NOWAIT); |
198 | if (rc >= 0) | |
199 | fm->id = rc; | |
4020f2d7 | 200 | spin_unlock(&tifm_adapter_lock); |
57f2667c TH |
201 | idr_preload_end(); |
202 | if (rc < 0) | |
6113ed73 AD |
203 | return rc; |
204 | ||
0bad16aa | 205 | dev_set_name(&fm->dev, "tifm%u", fm->id); |
7dd817d0 | 206 | rc = device_add(&fm->dev); |
6113ed73 AD |
207 | if (rc) { |
208 | spin_lock(&tifm_adapter_lock); | |
209 | idr_remove(&tifm_adapter_idr, fm->id); | |
210 | spin_unlock(&tifm_adapter_lock); | |
4020f2d7 | 211 | } |
6113ed73 | 212 | |
4020f2d7 AD |
213 | return rc; |
214 | } | |
215 | EXPORT_SYMBOL(tifm_add_adapter); | |
216 | ||
217 | void tifm_remove_adapter(struct tifm_adapter *fm) | |
218 | { | |
6113ed73 AD |
219 | unsigned int cnt; |
220 | ||
3540af8f | 221 | flush_workqueue(workqueue); |
6113ed73 AD |
222 | for (cnt = 0; cnt < fm->num_sockets; ++cnt) { |
223 | if (fm->sockets[cnt]) | |
224 | device_unregister(&fm->sockets[cnt]->dev); | |
225 | } | |
4020f2d7 AD |
226 | |
227 | spin_lock(&tifm_adapter_lock); | |
228 | idr_remove(&tifm_adapter_idr, fm->id); | |
229 | spin_unlock(&tifm_adapter_lock); | |
7dd817d0 | 230 | device_del(&fm->dev); |
4020f2d7 AD |
231 | } |
232 | EXPORT_SYMBOL(tifm_remove_adapter); | |
233 | ||
6113ed73 AD |
234 | void tifm_free_adapter(struct tifm_adapter *fm) |
235 | { | |
7dd817d0 | 236 | put_device(&fm->dev); |
6113ed73 AD |
237 | } |
238 | EXPORT_SYMBOL(tifm_free_adapter); | |
239 | ||
4020f2d7 AD |
240 | void tifm_free_device(struct device *dev) |
241 | { | |
2428a8fe AD |
242 | struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); |
243 | kfree(sock); | |
4020f2d7 AD |
244 | } |
245 | EXPORT_SYMBOL(tifm_free_device); | |
246 | ||
2428a8fe AD |
247 | struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id, |
248 | unsigned char type) | |
4020f2d7 | 249 | { |
2428a8fe AD |
250 | struct tifm_dev *sock = NULL; |
251 | ||
252 | if (!tifm_media_type_name(type, 0)) | |
253 | return sock; | |
4020f2d7 | 254 | |
2428a8fe AD |
255 | sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL); |
256 | if (sock) { | |
257 | spin_lock_init(&sock->lock); | |
258 | sock->type = type; | |
259 | sock->socket_id = id; | |
260 | sock->card_event = tifm_dummy_event; | |
261 | sock->data_event = tifm_dummy_event; | |
8e02f858 | 262 | |
7dd817d0 | 263 | sock->dev.parent = fm->dev.parent; |
2428a8fe | 264 | sock->dev.bus = &tifm_bus_type; |
7dd817d0 | 265 | sock->dev.dma_mask = fm->dev.parent->dma_mask; |
2428a8fe AD |
266 | sock->dev.release = tifm_free_device; |
267 | ||
0bad16aa KS |
268 | dev_set_name(&sock->dev, "tifm_%s%u:%u", |
269 | tifm_media_type_name(type, 2), fm->id, id); | |
2428a8fe AD |
270 | printk(KERN_INFO DRIVER_NAME |
271 | ": %s card detected in socket %u:%u\n", | |
272 | tifm_media_type_name(type, 0), fm->id, id); | |
4020f2d7 | 273 | } |
2428a8fe | 274 | return sock; |
4020f2d7 AD |
275 | } |
276 | EXPORT_SYMBOL(tifm_alloc_device); | |
277 | ||
278 | void tifm_eject(struct tifm_dev *sock) | |
279 | { | |
280 | struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent); | |
281 | fm->eject(fm, sock); | |
282 | } | |
283 | EXPORT_SYMBOL(tifm_eject); | |
284 | ||
baf8532a AD |
285 | int tifm_has_ms_pif(struct tifm_dev *sock) |
286 | { | |
287 | struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent); | |
288 | return fm->has_ms_pif(fm, sock); | |
289 | } | |
290 | EXPORT_SYMBOL(tifm_has_ms_pif); | |
291 | ||
4020f2d7 AD |
292 | int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, |
293 | int direction) | |
294 | { | |
639fd77e CJ |
295 | return dma_map_sg(&to_pci_dev(sock->dev.parent)->dev, sg, nents, |
296 | direction); | |
4020f2d7 AD |
297 | } |
298 | EXPORT_SYMBOL(tifm_map_sg); | |
299 | ||
300 | void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, | |
301 | int direction) | |
302 | { | |
639fd77e | 303 | dma_unmap_sg(&to_pci_dev(sock->dev.parent)->dev, sg, nents, direction); |
4020f2d7 AD |
304 | } |
305 | EXPORT_SYMBOL(tifm_unmap_sg); | |
306 | ||
3540af8f AD |
307 | void tifm_queue_work(struct work_struct *work) |
308 | { | |
309 | queue_work(workqueue, work); | |
310 | } | |
311 | EXPORT_SYMBOL(tifm_queue_work); | |
312 | ||
4020f2d7 AD |
313 | int tifm_register_driver(struct tifm_driver *drv) |
314 | { | |
315 | drv->driver.bus = &tifm_bus_type; | |
4020f2d7 AD |
316 | |
317 | return driver_register(&drv->driver); | |
318 | } | |
319 | EXPORT_SYMBOL(tifm_register_driver); | |
320 | ||
321 | void tifm_unregister_driver(struct tifm_driver *drv) | |
322 | { | |
323 | driver_unregister(&drv->driver); | |
324 | } | |
325 | EXPORT_SYMBOL(tifm_unregister_driver); | |
326 | ||
327 | static int __init tifm_init(void) | |
328 | { | |
3540af8f | 329 | int rc; |
4020f2d7 | 330 | |
58a69cb4 | 331 | workqueue = create_freezable_workqueue("tifm"); |
3540af8f AD |
332 | if (!workqueue) |
333 | return -ENOMEM; | |
334 | ||
335 | rc = bus_register(&tifm_bus_type); | |
336 | ||
337 | if (rc) | |
338 | goto err_out_wq; | |
339 | ||
340 | rc = class_register(&tifm_adapter_class); | |
341 | if (!rc) | |
342 | return 0; | |
343 | ||
344 | bus_unregister(&tifm_bus_type); | |
345 | ||
346 | err_out_wq: | |
347 | destroy_workqueue(workqueue); | |
4020f2d7 AD |
348 | |
349 | return rc; | |
350 | } | |
351 | ||
352 | static void __exit tifm_exit(void) | |
353 | { | |
354 | class_unregister(&tifm_adapter_class); | |
355 | bus_unregister(&tifm_bus_type); | |
3540af8f | 356 | destroy_workqueue(workqueue); |
4020f2d7 AD |
357 | } |
358 | ||
359 | subsys_initcall(tifm_init); | |
360 | module_exit(tifm_exit); | |
361 | ||
362 | MODULE_LICENSE("GPL"); | |
363 | MODULE_AUTHOR("Alex Dubov"); | |
364 | MODULE_DESCRIPTION("TI FlashMedia core driver"); | |
365 | MODULE_LICENSE("GPL"); | |
366 | MODULE_VERSION(DRIVER_VERSION); |