Lines Matching refs:bridge
8 #include <linux/fpga/fpga-bridge.h>
23 * fpga_bridge_enable - Enable transactions on the bridge
25 * @bridge: FPGA bridge
29 int fpga_bridge_enable(struct fpga_bridge *bridge)
31 dev_dbg(&bridge->dev, "enable\n");
33 if (bridge->br_ops && bridge->br_ops->enable_set)
34 return bridge->br_ops->enable_set(bridge, 1);
41 * fpga_bridge_disable - Disable transactions on the bridge
43 * @bridge: FPGA bridge
47 int fpga_bridge_disable(struct fpga_bridge *bridge)
49 dev_dbg(&bridge->dev, "disable\n");
51 if (bridge->br_ops && bridge->br_ops->enable_set)
52 return bridge->br_ops->enable_set(bridge, 0);
61 struct fpga_bridge *bridge;
64 bridge = to_fpga_bridge(dev);
66 bridge->info = info;
68 if (!mutex_trylock(&bridge->mutex)) {
76 dev_dbg(&bridge->dev, "get\n");
78 return bridge;
81 mutex_unlock(&bridge->mutex);
88 * of_fpga_bridge_get - get an exclusive reference to a fpga bridge
90 * @np: node pointer of a FPGA bridge
94 * Return -EBUSY if someone already has a reference to the bridge.
116 * fpga_bridge_get - get an exclusive reference to a fpga bridge
117 * @dev: parent device that fpga bridge was registered with
120 * Given a device, get an exclusive reference to a fpga bridge.
122 * Return: fpga bridge struct or IS_ERR() condition containing error code.
139 * fpga_bridge_put - release a reference to a bridge
141 * @bridge: FPGA bridge
143 void fpga_bridge_put(struct fpga_bridge *bridge)
145 dev_dbg(&bridge->dev, "put\n");
147 bridge->info = NULL;
148 module_put(bridge->dev.parent->driver->owner);
149 mutex_unlock(&bridge->mutex);
150 put_device(&bridge->dev);
158 * Enable each bridge in the list. If list is empty, do nothing.
160 * Return 0 for success or empty bridge list; return error code otherwise.
164 struct fpga_bridge *bridge;
167 list_for_each_entry(bridge, bridge_list, node) {
168 ret = fpga_bridge_enable(bridge);
182 * Disable each bridge in the list. If list is empty, do nothing.
184 * Return 0 for success or empty bridge list; return error code otherwise.
188 struct fpga_bridge *bridge;
191 list_for_each_entry(bridge, bridge_list, node) {
192 ret = fpga_bridge_disable(bridge);
206 * For each bridge in the list, put the bridge and remove it from the list.
211 struct fpga_bridge *bridge, *next;
214 list_for_each_entry_safe(bridge, next, bridge_list, node) {
215 fpga_bridge_put(bridge);
218 list_del(&bridge->node);
225 * of_fpga_bridge_get_to_list - get a bridge, add it to a list
227 * @np: node pointer of a FPGA bridge
231 * Get an exclusive reference to the bridge and and it to the list.
239 struct fpga_bridge *bridge;
242 bridge = of_fpga_bridge_get(np, info);
243 if (IS_ERR(bridge))
244 return PTR_ERR(bridge);
247 list_add(&bridge->node, bridge_list);
255 * fpga_bridge_get_to_list - given device, get a bridge, add it to a list
257 * @dev: FPGA bridge device
261 * Get an exclusive reference to the bridge and and it to the list.
269 struct fpga_bridge *bridge;
272 bridge = fpga_bridge_get(dev, info);
273 if (IS_ERR(bridge))
274 return PTR_ERR(bridge);
277 list_add(&bridge->node, bridge_list);
287 struct fpga_bridge *bridge = to_fpga_bridge(dev);
289 return sprintf(buf, "%s\n", bridge->name);
295 struct fpga_bridge *bridge = to_fpga_bridge(dev);
298 if (bridge->br_ops && bridge->br_ops->enable_show)
299 enable = bridge->br_ops->enable_show(bridge);
316 * @dev: FPGA bridge device from pdev
317 * @name: FPGA bridge name
318 * @br_ops: pointer to structure of fpga bridge ops
319 * @priv: FPGA bridge private data
321 * The caller of this function is responsible for freeing the bridge with
330 struct fpga_bridge *bridge;
338 bridge = kzalloc(sizeof(*bridge), GFP_KERNEL);
339 if (!bridge)
346 mutex_init(&bridge->mutex);
347 INIT_LIST_HEAD(&bridge->node);
349 bridge->name = name;
350 bridge->br_ops = br_ops;
351 bridge->priv = priv;
353 device_initialize(&bridge->dev);
354 bridge->dev.groups = br_ops->groups;
355 bridge->dev.class = fpga_bridge_class;
356 bridge->dev.parent = dev;
357 bridge->dev.of_node = dev->of_node;
358 bridge->dev.id = id;
360 ret = dev_set_name(&bridge->dev, "br%d", id);
364 return bridge;
369 kfree(bridge);
376 * fpga_bridge_free - free a fpga bridge created by fpga_bridge_create()
377 * @bridge: FPGA bridge struct
379 void fpga_bridge_free(struct fpga_bridge *bridge)
381 ida_simple_remove(&fpga_bridge_ida, bridge->dev.id);
382 kfree(bridge);
388 struct fpga_bridge *bridge = *(struct fpga_bridge **)res;
390 fpga_bridge_free(bridge);
395 * @dev: FPGA bridge device from pdev
396 * @name: FPGA bridge name
397 * @br_ops: pointer to structure of fpga bridge ops
398 * @priv: FPGA bridge private data
400 * This function is intended for use in a FPGA bridge driver's probe function.
401 * After the bridge driver creates the struct with devm_fpga_bridge_create(), it
402 * should register the bridge with fpga_bridge_register(). The bridge driver's
403 * remove function should call fpga_bridge_unregister(). The bridge struct
414 struct fpga_bridge **ptr, *bridge;
420 bridge = fpga_bridge_create(dev, name, br_ops, priv);
421 if (!bridge) {
424 *ptr = bridge;
428 return bridge;
433 * fpga_bridge_register - register a FPGA bridge
435 * @bridge: FPGA bridge struct
439 int fpga_bridge_register(struct fpga_bridge *bridge)
441 struct device *dev = &bridge->dev;
450 dev_info(dev->parent, "fpga bridge [%s] registered\n", bridge->name);
457 * fpga_bridge_unregister - unregister a FPGA bridge
459 * @bridge: FPGA bridge struct
461 * This function is intended for use in a FPGA bridge driver's remove function.
463 void fpga_bridge_unregister(struct fpga_bridge *bridge)
466 * If the low level driver provides a method for putting bridge into
469 if (bridge->br_ops && bridge->br_ops->fpga_bridge_remove)
470 bridge->br_ops->fpga_bridge_remove(bridge);
472 device_unregister(&bridge->dev);