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PM / devfreq: event: Find the instance of devfreq-event device by using phandle

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This patch use the phandle to find the instance of devfreq-event device in
Device Tree when calling the devfreq_event_get_edev_by_phandle() because there
is two type devfreq-event devices as following:

First case, exynos-ppmu.c driver provides the maximum four event of each PPMU.
So, when getting the instance of devfreq-event device, using the unique name of
struct devfreq_event_desc.

Second case, exynos-nocp.c driver provide the only one event of each NoC Probe
device. So, when getting the instance of devfreq-event device, using the
phandle of each NoC probe device.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Chanwoo Choi 2016-04-14 14:37:12 +09:00 committed by MyungJoo Ham
parent 0179a91387
commit 19cf91d0f9
1 changed files with 5 additions and 0 deletions
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5
drivers/devfreq/devfreq-event.c
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@ -234,6 +234,11 @@ struct devfreq_event_dev *devfreq_event_get_edev_by_phandle(struct device *dev,
return ERR_PTR(-ENODEV);
mutex_lock(&devfreq_event_list_lock);
list_for_each_entry(edev, &devfreq_event_list, node) {
if (edev->dev.parent && edev->dev.parent->of_node == node)
goto out;
}
list_for_each_entry(edev, &devfreq_event_list, node) {
if (!strcmp(edev->desc->name, node->name))
goto out;