2 * drivers/mfd/mfd-core.c
5 * Copyright (c) 2006 Ian Molton
6 * Copyright (c) 2007,2008 Dmitry Baryshkov
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
14 #include <linux/kernel.h>
15 #include <linux/platform_device.h>
16 #include <linux/acpi.h>
17 #include <linux/mfd/core.h>
18 #include <linux/pm_runtime.h>
19 #include <linux/slab.h>
21 static int mfd_add_device(struct device *parent, int id,
22 const struct mfd_cell *cell,
23 struct resource *mem_base,
27 struct platform_device *pdev;
31 pdev = platform_device_alloc(cell->name, id + cell->id);
35 res = kzalloc(sizeof(*res) * cell->num_resources, GFP_KERNEL);
39 pdev->dev.parent = parent;
40 platform_set_drvdata(pdev, cell->driver_data);
42 if (cell->data_size) {
43 ret = platform_device_add_data(pdev,
44 cell->platform_data, cell->data_size);
49 for (r = 0; r < cell->num_resources; r++) {
50 res[r].name = cell->resources[r].name;
51 res[r].flags = cell->resources[r].flags;
53 /* Find out base to use */
54 if ((cell->resources[r].flags & IORESOURCE_MEM) && mem_base) {
55 res[r].parent = mem_base;
56 res[r].start = mem_base->start +
57 cell->resources[r].start;
58 res[r].end = mem_base->start +
59 cell->resources[r].end;
60 } else if (cell->resources[r].flags & IORESOURCE_IRQ) {
61 res[r].start = irq_base +
62 cell->resources[r].start;
63 res[r].end = irq_base +
64 cell->resources[r].end;
66 res[r].parent = cell->resources[r].parent;
67 res[r].start = cell->resources[r].start;
68 res[r].end = cell->resources[r].end;
71 if (!cell->ignore_resource_conflicts) {
72 ret = acpi_check_resource_conflict(res);
78 ret = platform_device_add_resources(pdev, res, cell->num_resources);
82 ret = platform_device_add(pdev);
86 if (cell->pm_runtime_no_callbacks)
87 pm_runtime_no_callbacks(&pdev->dev);
93 /* platform_device_del(pdev); */
97 platform_device_put(pdev);
102 int mfd_add_devices(struct device *parent, int id,
103 const struct mfd_cell *cells, int n_devs,
104 struct resource *mem_base,
110 for (i = 0; i < n_devs; i++) {
111 ret = mfd_add_device(parent, id, cells + i, mem_base, irq_base);
117 mfd_remove_devices(parent);
121 EXPORT_SYMBOL(mfd_add_devices);
123 static int mfd_remove_devices_fn(struct device *dev, void *unused)
125 platform_device_unregister(to_platform_device(dev));
129 void mfd_remove_devices(struct device *parent)
131 device_for_each_child(parent, NULL, mfd_remove_devices_fn);
133 EXPORT_SYMBOL(mfd_remove_devices);
135 MODULE_LICENSE("GPL");
136 MODULE_AUTHOR("Ian Molton, Dmitry Baryshkov");