#include <linux/slab.h>
#include <linux/pm_runtime.h>
+#include <asm/dma-iommu.h>
+
#include "base.h"
#define to_platform_driver(drv) (container_of((drv), struct platform_driver, \
};
EXPORT_SYMBOL_GPL(platform_bus);
+/**
+ * arch_setup_pdev_archdata - Allow manipulation of archdata before its used
+ * @pdev: platform device
+ *
+ * This is called before platform_device_add() such that any pdev_archdata may
+ * be setup before the platform_notifier is called. So if a user needs to
+ * manipulate any relevant information in the pdev_archdata they can do:
+ *
+ * platform_devic_alloc()
+ * ... manipulate ...
+ * platform_device_add()
+ *
+ * And if they don't care they can just call platform_device_register() and
+ * everything will just work out.
+ */
+void __weak arch_setup_pdev_archdata(struct platform_device *pdev)
+{
+}
+
/**
* platform_get_resource - get a resource for a device
* @dev: platform device
pa->pdev.id = id;
device_initialize(&pa->pdev.dev);
pa->pdev.dev.release = platform_device_release;
+ arch_setup_pdev_archdata(&pa->pdev);
}
return pa ? &pa->pdev : NULL;
int platform_device_add_resources(struct platform_device *pdev,
const struct resource *res, unsigned int num)
{
- struct resource *r;
-
- if (!res)
- return 0;
+ struct resource *r = NULL;
- r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
- if (r) {
- pdev->resource = r;
- pdev->num_resources = num;
- return 0;
+ if (res) {
+ r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
+ if (!r)
+ return -ENOMEM;
}
- return -ENOMEM;
+
+ kfree(pdev->resource);
+ pdev->resource = r;
+ pdev->num_resources = num;
+ return 0;
}
EXPORT_SYMBOL_GPL(platform_device_add_resources);
return -ENOMEM;
}
+ kfree(pdev->dev.platform_data);
pdev->dev.platform_data = d;
return 0;
}
dev_name(&pdev->dev), dev_name(pdev->dev.parent));
ret = device_add(&pdev->dev);
- if (ret == 0)
- return ret;
+ if (ret)
+ goto failed;
+
+#ifdef CONFIG_PLATFORM_ENABLE_IOMMU
+ if (platform_bus_type.map && !pdev->dev.archdata.mapping) {
+ ret = arm_iommu_attach_device(&pdev->dev,
+ platform_bus_type.map);
+ if (ret)
+ goto failed;
+ }
+#endif
+
+ return 0;
failed:
while (--i >= 0) {
int platform_device_register(struct platform_device *pdev)
{
device_initialize(&pdev->dev);
+ arch_setup_pdev_archdata(pdev);
return platform_device_add(pdev);
}
EXPORT_SYMBOL_GPL(platform_device_register);
EXPORT_SYMBOL_GPL(platform_device_unregister);
/**
- * platform_device_register_resndata - add a platform-level device with
+ * platform_device_register_full - add a platform-level device with
* resources and platform-specific data
*
- * @parent: parent device for the device we're adding
- * @name: base name of the device we're adding
- * @id: instance id
- * @res: set of resources that needs to be allocated for the device
- * @num: number of resources
- * @data: platform specific data for this platform device
- * @size: size of platform specific data
+ * @pdevinfo: data used to create device
*
* Returns &struct platform_device pointer on success, or ERR_PTR() on error.
*/
-struct platform_device *__init_or_module platform_device_register_resndata(
- struct device *parent,
- const char *name, int id,
- const struct resource *res, unsigned int num,
- const void *data, size_t size)
+struct platform_device *platform_device_register_full(
+ const struct platform_device_info *pdevinfo)
{
int ret = -ENOMEM;
struct platform_device *pdev;
- pdev = platform_device_alloc(name, id);
+ pdev = platform_device_alloc(pdevinfo->name, pdevinfo->id);
if (!pdev)
- goto err;
-
- pdev->dev.parent = parent;
+ goto err_alloc;
+
+ pdev->dev.parent = pdevinfo->parent;
+
+ if (pdevinfo->dma_mask) {
+ /*
+ * This memory isn't freed when the device is put,
+ * I don't have a nice idea for that though. Conceptually
+ * dma_mask in struct device should not be a pointer.
+ * See http://thread.gmane.org/gmane.linux.kernel.pci/9081
+ */
+ pdev->dev.dma_mask =
+ kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
+ if (!pdev->dev.dma_mask)
+ goto err;
+
+ *pdev->dev.dma_mask = pdevinfo->dma_mask;
+ pdev->dev.coherent_dma_mask = pdevinfo->dma_mask;
+ }
- ret = platform_device_add_resources(pdev, res, num);
+ ret = platform_device_add_resources(pdev,
+ pdevinfo->res, pdevinfo->num_res);
if (ret)
goto err;
- ret = platform_device_add_data(pdev, data, size);
+ ret = platform_device_add_data(pdev,
+ pdevinfo->data, pdevinfo->size_data);
if (ret)
goto err;
ret = platform_device_add(pdev);
if (ret) {
err:
+ kfree(pdev->dev.dma_mask);
+
+err_alloc:
platform_device_put(pdev);
return ERR_PTR(ret);
}
return pdev;
}
-EXPORT_SYMBOL_GPL(platform_device_register_resndata);
+EXPORT_SYMBOL_GPL(platform_device_register_full);
static int platform_drv_probe(struct device *_dev)
{
int rc;
/* Some devices have extra OF data and an OF-style MODALIAS */
- rc = of_device_uevent(dev,env);
+ rc = of_device_uevent_modalias(dev,env);
if (rc != -ENODEV)
return rc;
add_uevent_var(env, "MODALIAS=%s%s", PLATFORM_MODULE_PREFIX,
- (pdev->id_entry) ? pdev->id_entry->name : pdev->name);
+ pdev->name);
return 0;
}
return ret;
}
-static int platform_pm_prepare(struct device *dev)
-{
- struct device_driver *drv = dev->driver;
- int ret = 0;
-
- if (drv && drv->pm && drv->pm->prepare)
- ret = drv->pm->prepare(dev);
-
- return ret;
-}
-
-static void platform_pm_complete(struct device *dev)
-{
- struct device_driver *drv = dev->driver;
-
- if (drv && drv->pm && drv->pm->complete)
- drv->pm->complete(dev);
-}
-
-#else /* !CONFIG_PM_SLEEP */
-
-#define platform_pm_prepare NULL
-#define platform_pm_complete NULL
-
-#endif /* !CONFIG_PM_SLEEP */
+#endif /* CONFIG_PM_SLEEP */
#ifdef CONFIG_SUSPEND
-int __weak platform_pm_suspend(struct device *dev)
+int platform_pm_suspend(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
return ret;
}
-int __weak platform_pm_suspend_noirq(struct device *dev)
-{
- struct device_driver *drv = dev->driver;
- int ret = 0;
-
- if (!drv)
- return 0;
-
- if (drv->pm) {
- if (drv->pm->suspend_noirq)
- ret = drv->pm->suspend_noirq(dev);
- }
-
- return ret;
-}
-
-int __weak platform_pm_resume(struct device *dev)
+int platform_pm_resume(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
return ret;
}
-int __weak platform_pm_resume_noirq(struct device *dev)
-{
- struct device_driver *drv = dev->driver;
- int ret = 0;
-
- if (!drv)
- return 0;
-
- if (drv->pm) {
- if (drv->pm->resume_noirq)
- ret = drv->pm->resume_noirq(dev);
- }
-
- return ret;
-}
-
-#else /* !CONFIG_SUSPEND */
-
-#define platform_pm_suspend NULL
-#define platform_pm_resume NULL
-#define platform_pm_suspend_noirq NULL
-#define platform_pm_resume_noirq NULL
-
-#endif /* !CONFIG_SUSPEND */
+#endif /* CONFIG_SUSPEND */
#ifdef CONFIG_HIBERNATE_CALLBACKS
-static int platform_pm_freeze(struct device *dev)
+int platform_pm_freeze(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
return ret;
}
-static int platform_pm_freeze_noirq(struct device *dev)
-{
- struct device_driver *drv = dev->driver;
- int ret = 0;
-
- if (!drv)
- return 0;
-
- if (drv->pm) {
- if (drv->pm->freeze_noirq)
- ret = drv->pm->freeze_noirq(dev);
- }
-
- return ret;
-}
-
-static int platform_pm_thaw(struct device *dev)
+int platform_pm_thaw(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
return ret;
}
-static int platform_pm_thaw_noirq(struct device *dev)
-{
- struct device_driver *drv = dev->driver;
- int ret = 0;
-
- if (!drv)
- return 0;
-
- if (drv->pm) {
- if (drv->pm->thaw_noirq)
- ret = drv->pm->thaw_noirq(dev);
- }
-
- return ret;
-}
-
-static int platform_pm_poweroff(struct device *dev)
+int platform_pm_poweroff(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
return ret;
}
-static int platform_pm_poweroff_noirq(struct device *dev)
-{
- struct device_driver *drv = dev->driver;
- int ret = 0;
-
- if (!drv)
- return 0;
-
- if (drv->pm) {
- if (drv->pm->poweroff_noirq)
- ret = drv->pm->poweroff_noirq(dev);
- }
-
- return ret;
-}
-
-static int platform_pm_restore(struct device *dev)
+int platform_pm_restore(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
return ret;
}
-static int platform_pm_restore_noirq(struct device *dev)
-{
- struct device_driver *drv = dev->driver;
- int ret = 0;
-
- if (!drv)
- return 0;
-
- if (drv->pm) {
- if (drv->pm->restore_noirq)
- ret = drv->pm->restore_noirq(dev);
- }
-
- return ret;
-}
-
-#else /* !CONFIG_HIBERNATE_CALLBACKS */
-
-#define platform_pm_freeze NULL
-#define platform_pm_thaw NULL
-#define platform_pm_poweroff NULL
-#define platform_pm_restore NULL
-#define platform_pm_freeze_noirq NULL
-#define platform_pm_thaw_noirq NULL
-#define platform_pm_poweroff_noirq NULL
-#define platform_pm_restore_noirq NULL
-
-#endif /* !CONFIG_HIBERNATE_CALLBACKS */
-
-#ifdef CONFIG_PM_RUNTIME
-
-int __weak platform_pm_runtime_suspend(struct device *dev)
-{
- return pm_generic_runtime_suspend(dev);
-};
-
-int __weak platform_pm_runtime_resume(struct device *dev)
-{
- return pm_generic_runtime_resume(dev);
-};
-
-int __weak platform_pm_runtime_idle(struct device *dev)
-{
- return pm_generic_runtime_idle(dev);
-};
-
-#else /* !CONFIG_PM_RUNTIME */
-
-#define platform_pm_runtime_suspend NULL
-#define platform_pm_runtime_resume NULL
-#define platform_pm_runtime_idle NULL
-
-#endif /* !CONFIG_PM_RUNTIME */
+#endif /* CONFIG_HIBERNATE_CALLBACKS */
static const struct dev_pm_ops platform_dev_pm_ops = {
- .prepare = platform_pm_prepare,
- .complete = platform_pm_complete,
- .suspend = platform_pm_suspend,
- .resume = platform_pm_resume,
- .freeze = platform_pm_freeze,
- .thaw = platform_pm_thaw,
- .poweroff = platform_pm_poweroff,
- .restore = platform_pm_restore,
- .suspend_noirq = platform_pm_suspend_noirq,
- .resume_noirq = platform_pm_resume_noirq,
- .freeze_noirq = platform_pm_freeze_noirq,
- .thaw_noirq = platform_pm_thaw_noirq,
- .poweroff_noirq = platform_pm_poweroff_noirq,
- .restore_noirq = platform_pm_restore_noirq,
- .runtime_suspend = platform_pm_runtime_suspend,
- .runtime_resume = platform_pm_runtime_resume,
- .runtime_idle = platform_pm_runtime_idle,
+ .runtime_suspend = pm_generic_runtime_suspend,
+ .runtime_resume = pm_generic_runtime_resume,
+ .runtime_idle = pm_generic_runtime_idle,
+ USE_PLATFORM_PM_SLEEP_OPS
};
struct bus_type platform_bus_type = {
};
EXPORT_SYMBOL_GPL(platform_bus_type);
-/**
- * platform_bus_get_pm_ops() - return pointer to busses dev_pm_ops
- *
- * This function can be used by platform code to get the current
- * set of dev_pm_ops functions used by the platform_bus_type.
- */
-const struct dev_pm_ops * __init platform_bus_get_pm_ops(void)
-{
- return platform_bus_type.pm;
-}
-
-/**
- * platform_bus_set_pm_ops() - update dev_pm_ops for the platform_bus_type
- *
- * @pm: pointer to new dev_pm_ops struct to be used for platform_bus_type
- *
- * Platform code can override the dev_pm_ops methods of
- * platform_bus_type by using this function. It is expected that
- * platform code will first do a platform_bus_get_pm_ops(), then
- * kmemdup it, then customize selected methods and pass a pointer to
- * the new struct dev_pm_ops to this function.
- *
- * Since platform-specific code is customizing methods for *all*
- * devices (not just platform-specific devices) it is expected that
- * any custom overrides of these functions will keep existing behavior
- * and simply extend it. For example, any customization of the
- * runtime PM methods should continue to call the pm_generic_*
- * functions as the default ones do in addition to the
- * platform-specific behavior.
- */
-void __init platform_bus_set_pm_ops(const struct dev_pm_ops *pm)
-{
- platform_bus_type.pm = pm;
-}
-
int __init platform_bus_init(void)
{
int error;
Code Review / linux-2.6.git / blobdiff