2 * tifm_core.c - TI FlashMedia driver
4 * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
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.
12 #include <linux/tifm.h>
13 #include <linux/init.h>
14 #include <linux/idr.h>
16 #define DRIVER_NAME "tifm_core"
17 #define DRIVER_VERSION "0.8"
19 static DEFINE_IDR(tifm_adapter_idr);
20 static DEFINE_SPINLOCK(tifm_adapter_lock);
22 static tifm_media_id *tifm_device_match(tifm_media_id *ids,
26 if (dev->media_id == *ids)
33 static int tifm_match(struct device *dev, struct device_driver *drv)
35 struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
36 struct tifm_driver *fm_drv;
38 fm_drv = container_of(drv, struct tifm_driver, driver);
39 if (!fm_drv->id_table)
41 if (tifm_device_match(fm_drv->id_table, fm_dev))
46 static int tifm_uevent(struct device *dev, char **envp, int num_envp,
47 char *buffer, int buffer_size)
49 struct tifm_dev *fm_dev;
52 const char *card_type_name[] = {"INV", "SM", "MS", "SD"};
54 if (!dev || !(fm_dev = container_of(dev, struct tifm_dev, dev)))
56 if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
57 "TIFM_CARD_TYPE=%s", card_type_name[fm_dev->media_id]))
63 static int tifm_device_probe(struct device *dev)
65 struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
66 struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
71 if (dev->driver && drv->probe) {
72 rc = drv->probe(sock);
80 static void tifm_dummy_event(struct tifm_dev *sock)
85 static int tifm_device_remove(struct device *dev)
87 struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
88 struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
91 if (dev->driver && drv->remove) {
92 sock->card_event = tifm_dummy_event;
93 sock->data_event = tifm_dummy_event;
95 sock->dev.driver = NULL;
104 static int tifm_device_suspend(struct device *dev, pm_message_t state)
106 struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
107 struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
110 if (dev->driver && drv->suspend)
111 return drv->suspend(fm_dev, state);
115 static int tifm_device_resume(struct device *dev)
117 struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
118 struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
121 if (dev->driver && drv->resume)
122 return drv->resume(fm_dev);
128 #define tifm_device_suspend NULL
129 #define tifm_device_resume NULL
131 #endif /* CONFIG_PM */
133 static struct bus_type tifm_bus_type = {
136 .uevent = tifm_uevent,
137 .probe = tifm_device_probe,
138 .remove = tifm_device_remove,
139 .suspend = tifm_device_suspend,
140 .resume = tifm_device_resume
143 static void tifm_free(struct class_device *cdev)
145 struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev);
151 static struct class tifm_adapter_class = {
152 .name = "tifm_adapter",
156 struct tifm_adapter *tifm_alloc_adapter(void)
158 struct tifm_adapter *fm;
160 fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL);
162 fm->cdev.class = &tifm_adapter_class;
163 spin_lock_init(&fm->lock);
164 class_device_initialize(&fm->cdev);
168 EXPORT_SYMBOL(tifm_alloc_adapter);
170 void tifm_free_adapter(struct tifm_adapter *fm)
172 class_device_put(&fm->cdev);
174 EXPORT_SYMBOL(tifm_free_adapter);
176 int tifm_add_adapter(struct tifm_adapter *fm,
177 int (*mediathreadfn)(void *data))
181 if (!idr_pre_get(&tifm_adapter_idr, GFP_KERNEL))
184 spin_lock(&tifm_adapter_lock);
185 rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
186 spin_unlock(&tifm_adapter_lock);
188 snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
189 fm->media_switcher = kthread_create(mediathreadfn,
190 fm, "tifm/%u", fm->id);
192 if (!IS_ERR(fm->media_switcher))
193 return class_device_add(&fm->cdev);
195 spin_lock(&tifm_adapter_lock);
196 idr_remove(&tifm_adapter_idr, fm->id);
197 spin_unlock(&tifm_adapter_lock);
202 EXPORT_SYMBOL(tifm_add_adapter);
204 void tifm_remove_adapter(struct tifm_adapter *fm)
206 class_device_del(&fm->cdev);
208 spin_lock(&tifm_adapter_lock);
209 idr_remove(&tifm_adapter_idr, fm->id);
210 spin_unlock(&tifm_adapter_lock);
212 EXPORT_SYMBOL(tifm_remove_adapter);
214 void tifm_free_device(struct device *dev)
216 struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
219 EXPORT_SYMBOL(tifm_free_device);
221 struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm)
223 struct tifm_dev *dev = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
226 spin_lock_init(&dev->lock);
228 dev->dev.parent = fm->dev;
229 dev->dev.bus = &tifm_bus_type;
230 dev->dev.release = tifm_free_device;
231 dev->card_event = tifm_dummy_event;
232 dev->data_event = tifm_dummy_event;
236 EXPORT_SYMBOL(tifm_alloc_device);
238 void tifm_eject(struct tifm_dev *sock)
240 struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent);
243 EXPORT_SYMBOL(tifm_eject);
245 int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
248 return pci_map_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
250 EXPORT_SYMBOL(tifm_map_sg);
252 void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
255 pci_unmap_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
257 EXPORT_SYMBOL(tifm_unmap_sg);
259 int tifm_register_driver(struct tifm_driver *drv)
261 drv->driver.bus = &tifm_bus_type;
263 return driver_register(&drv->driver);
265 EXPORT_SYMBOL(tifm_register_driver);
267 void tifm_unregister_driver(struct tifm_driver *drv)
269 driver_unregister(&drv->driver);
271 EXPORT_SYMBOL(tifm_unregister_driver);
273 static int __init tifm_init(void)
275 int rc = bus_register(&tifm_bus_type);
278 rc = class_register(&tifm_adapter_class);
280 bus_unregister(&tifm_bus_type);
286 static void __exit tifm_exit(void)
288 class_unregister(&tifm_adapter_class);
289 bus_unregister(&tifm_bus_type);
292 subsys_initcall(tifm_init);
293 module_exit(tifm_exit);
295 MODULE_LICENSE("GPL");
296 MODULE_AUTHOR("Alex Dubov");
297 MODULE_DESCRIPTION("TI FlashMedia core driver");
298 MODULE_LICENSE("GPL");
299 MODULE_VERSION(DRIVER_VERSION);