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misc: uclass: Introduce misc_init_by_ofnode 

Introduce misc_init_by_ofnode to probe a misc device
using its ofnode.

Signed-off-by: Keerthy <j-keerthy@ti.com>
This commit is contained in:
Keerthy 2021-06-23 20:40:48 +05:30 committed by Praneeth Bajjuri
parent 2ae138d289
commit 9d9fd0a3b1
2 changed files with 34 additions and 0 deletions
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25
drivers/misc/misc-uclass.c
View File

@ -5,6 +5,8 @@
#include <common.h>
#include <dm.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#include <errno.h>
#include <misc.h>
@ -65,6 +67,29 @@ int misc_set_enabled(struct udevice *dev, bool val)
return ops->set_enabled(dev, val);
}
int misc_init_by_ofnode(ofnode node)
{
struct udevice *dev = NULL;
struct uclass *uc;
int ret;
ret = uclass_get(UCLASS_MISC, &uc);
if (ret)
return ret;
uclass_foreach_dev(dev, uc) {
if (ofnode_equal(node, dev_ofnode(dev))) {
ret = device_probe(dev);
if (ret)
debug("%s: Failed to initialize - %d\n",
dev->name, ret);
return ret;
}
}
return -ENODEV;
}
UCLASS_DRIVER(misc) = {
.id = UCLASS_MISC,
.name = "misc",

9
include/misc.h
View File

@ -76,6 +76,15 @@ int misc_call(struct udevice *dev, int msgid, void *tx_msg, int tx_size,
*/
int misc_set_enabled(struct udevice *dev, bool val);
/**
* misc_init_by_ofnode() - Probe a misc device by using ofnode.
* @node: ofnode of the misc device.
*
* A misc device is probed using ofnode.
*
* Return: -ve on error, 0 on success
*/
int misc_init_by_ofnode(ofnode node);
/*
* struct misc_ops - Driver model Misc operations
*