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mfd: core: Add support for software nodes

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The old device property API is going to be removed and
replaced with the newer software node API. This prepares MFD
subsystem for the transition.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Heikki Krogerus 2021-03-01 16:42:19 +02:00 committed by Lee Jones
parent 586478bfc9
commit 42e5998291
2 changed files with 13 additions and 0 deletions
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9
drivers/mfd/mfd-core.c
View file

@ -244,6 +244,12 @@ static int mfd_add_device(struct device *parent, int id,
goto fail_of_entry;
}
if (cell->swnode) {
ret = device_add_software_node(&pdev->dev, cell->swnode);
if (ret)
goto fail_of_entry;
}
for (r = 0; r < cell->num_resources; r++) {
res[r].name = cell->resources[r].name;
res[r].flags = cell->resources[r].flags;
@ -304,6 +310,7 @@ static int mfd_add_device(struct device *parent, int id,
list_del(&of_entry->list);
kfree(of_entry);
}
device_remove_software_node(&pdev->dev);
fail_alias:
regulator_bulk_unregister_supply_alias(&pdev->dev,
cell->parent_supplies,
@ -372,6 +379,8 @@ static int mfd_remove_devices_fn(struct device *dev, void *data)
regulator_bulk_unregister_supply_alias(dev, cell->parent_supplies,
cell->num_parent_supplies);
device_remove_software_node(&pdev->dev);
platform_device_unregister(pdev);
return 0;
}

4
include/linux/mfd/core.h
View file

@ -50,6 +50,7 @@
#define MFD_DEP_LEVEL_HIGH 1
struct irq_domain;
struct software_node;
struct property_entry;
/* Matches ACPI PNP id, either _HID or _CID, or ACPI _ADR */
@ -78,6 +79,9 @@ struct mfd_cell {
void *platform_data;
size_t pdata_size;
/* Software node for the device. */
const struct software_node *swnode;
/* device properties passed to the sub devices drivers */
const struct property_entry *properties;