1 // SPDX-License-Identifier: GPL-2.0
3 #include <linux/device.h>
19 void devm_ioremap_release(struct device *dev, void *res)  in devm_ioremap_release()
24 static int devm_ioremap_match(struct device *dev, void *res, void *match_data)  in devm_ioremap_match()
29 static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset,  in __devm_ioremap()
33 	void __iomem **ptr, *addr = NULL;  in __devm_ioremap()  local
42 		addr = ioremap(offset, size);  in __devm_ioremap()
45 		addr = ioremap_uc(offset, size);  in __devm_ioremap()
48 		addr = ioremap_wc(offset, size);  in __devm_ioremap()
51 		addr = ioremap_np(offset, size);  in __devm_ioremap()
55 	if (addr) {  in __devm_ioremap()
56 		*ptr = addr;  in __devm_ioremap()
61 	return addr;  in __devm_ioremap()
65  * devm_ioremap - Managed ioremap()
66  * @dev: Generic device to remap IO address for
72 void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,  in devm_ioremap()
80  * devm_ioremap_uc - Managed ioremap_uc()
81  * @dev: Generic device to remap IO address for
87 void __iomem *devm_ioremap_uc(struct device *dev, resource_size_t offset,  in devm_ioremap_uc()
95  * devm_ioremap_wc - Managed ioremap_wc()
96  * @dev: Generic device to remap IO address for
102 void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset,  in devm_ioremap_wc()
110  * devm_iounmap - Managed iounmap()
111  * @dev: Generic device to unmap for
112  * @addr: Address to unmap
114  * Managed iounmap().  @addr must have been mapped using devm_ioremap*().
116 void devm_iounmap(struct device *dev, void __iomem *addr)  in devm_iounmap()  argument
119 			       (__force void *)addr));  in devm_iounmap()
124 __devm_ioremap_resource(struct device *dev, const struct resource *res,  in __devm_ioremap_resource()
135 		ret = dev_err_probe(dev, -EINVAL, "invalid resource %pR\n", res);  in __devm_ioremap_resource()
139 	if (type == DEVM_IOREMAP && res->flags & IORESOURCE_MEM_NONPOSTED)  in __devm_ioremap_resource()
144 	if (res->name)  in __devm_ioremap_resource()
146 					     dev_name(dev), res->name);  in __devm_ioremap_resource()
150 		ret = dev_err_probe(dev, -ENOMEM, "can't generate pretty name for resource %pR\n", res);  in __devm_ioremap_resource()
154 	if (!devm_request_mem_region(dev, res->start, size, pretty_name)) {  in __devm_ioremap_resource()
155 		ret = dev_err_probe(dev, -EBUSY, "can't request region for resource %pR\n", res);  in __devm_ioremap_resource()
159 	dest_ptr = __devm_ioremap(dev, res->start, size, type);  in __devm_ioremap_resource()
161 		devm_release_mem_region(dev, res->start, size);  in __devm_ioremap_resource()
162 		ret = dev_err_probe(dev, -ENOMEM, "ioremap failed for resource %pR\n", res);  in __devm_ioremap_resource()
170  * devm_ioremap_resource() - check, request region, and ioremap resource
171  * @dev: generic device to handle the resource for
181  *	base = devm_ioremap_resource(&pdev->dev, res);
188 void __iomem *devm_ioremap_resource(struct device *dev,  in devm_ioremap_resource()
196  * devm_ioremap_resource_wc() - write-combined variant of
198  * @dev: generic device to handle the resource for
204 void __iomem *devm_ioremap_resource_wc(struct device *dev,  in devm_ioremap_resource_wc()
211  * devm_of_iomap - Requests a resource and maps the memory mapped IO
212  *		   for a given device_node managed by a given device
216  * on driver detach of the device.
218  * This is to be used when a device requests/maps resources described
219  * by other device tree nodes (children or otherwise).
221  * @dev:	The device "managing" the resource
222  * @node:       The device-tree node where the resource resides
228  *	base = devm_of_iomap(&pdev->dev, node, 0, NULL);
232  * Please Note: This is not a one-to-one replacement for of_iomap() because the
235  * but the devm_of_iomap() function will return -EBUSY.
240 void __iomem *devm_of_iomap(struct device *dev, struct device_node *node, int index,  in devm_of_iomap()
246 		return IOMEM_ERR_PTR(-EINVAL);  in devm_of_iomap()
257 static void devm_ioport_map_release(struct device *dev, void *res)  in devm_ioport_map_release()
262 static int devm_ioport_map_match(struct device *dev, void *res,  in devm_ioport_map_match()
269  * devm_ioport_map - Managed ioport_map()
270  * @dev: Generic device to map ioport for
279 void __iomem *devm_ioport_map(struct device *dev, unsigned long port,  in devm_ioport_map()
282 	void __iomem **ptr, *addr;  in devm_ioport_map()  local
289 	addr = ioport_map(port, nr);  in devm_ioport_map()
290 	if (addr) {  in devm_ioport_map()
291 		*ptr = addr;  in devm_ioport_map()
296 	return addr;  in devm_ioport_map()
301  * devm_ioport_unmap - Managed ioport_unmap()
302  * @dev: Generic device to unmap for
303  * @addr: Address to unmap
305  * Managed ioport_unmap().  @addr must have been mapped using
308 void devm_ioport_unmap(struct device *dev, void __iomem *addr)  in devm_ioport_unmap()  argument
311 			       devm_ioport_map_match, (__force void *)addr));  in devm_ioport_unmap()
316 static void devm_arch_phys_ac_add_release(struct device *dev, void *res)  in devm_arch_phys_ac_add_release()
322  * devm_arch_phys_wc_add - Managed arch_phys_wc_add()
323  * @dev: Managed device
330 int devm_arch_phys_wc_add(struct device *dev, unsigned long base, unsigned long size)  in devm_arch_phys_wc_add()
338 		return -ENOMEM;  in devm_arch_phys_wc_add()
358 static void devm_arch_io_free_memtype_wc_release(struct device *dev, void *res)  in devm_arch_io_free_memtype_wc_release()
362 	arch_io_free_memtype_wc(this->start, this->size);  in devm_arch_io_free_memtype_wc_release()
366  * devm_arch_io_reserve_memtype_wc - Managed arch_io_reserve_memtype_wc()
367  * @dev: Managed device
375 int devm_arch_io_reserve_memtype_wc(struct device *dev, resource_size_t start,  in devm_arch_io_reserve_memtype_wc()
384 		return -ENOMEM;  in devm_arch_io_reserve_memtype_wc()
392 	dr->start = start;  in devm_arch_io_reserve_memtype_wc()
393 	dr->size = size;  in devm_arch_io_reserve_memtype_wc()