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mfd: core: propagate device properties to sub devices drivers

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In the similar way like we do for the platform data we propagate the device
properties. For example, in case of Intel LPSS drivers we may provide a
specific property to tell the actual device driver an additional information
such as platform name.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Andy Shevchenko 2015-11-30 17:11:40 +02:00 committed by Rafael J. Wysocki
parent 55f89a8a45
commit 4d215cabc7
2 changed files with 12 additions and 0 deletions
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7
drivers/mfd/mfd-core.c
View File

@ -14,6 +14,7 @@
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
#include <linux/property.h>
#include <linux/mfd/core.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
@ -192,6 +193,12 @@ static int mfd_add_device(struct device *parent, int id,
goto fail_alias;
}
if (cell->pset) {
ret = platform_device_add_properties(pdev, cell->pset);
if (ret)
goto fail_alias;
}
ret = mfd_platform_add_cell(pdev, cell, usage_count);
if (ret)
goto fail_alias;

5
include/linux/mfd/core.h
View File

@ -17,6 +17,7 @@
#include <linux/platform_device.h>
struct irq_domain;
struct property_set;
/* Matches ACPI PNP id, either _HID or _CID, or ACPI _ADR */
struct mfd_cell_acpi_match {
@ -44,6 +45,10 @@ struct mfd_cell {
/* platform data passed to the sub devices drivers */
void *platform_data;
size_t pdata_size;
/* device properties passed to the sub devices drivers */
const struct property_set *pset;
/*
* Device Tree compatible string
* See: Documentation/devicetree/usage-model.txt Chapter 2.2 for details