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phy: core: add debugfs files

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Add a debugfs root for phy class, and create a debugfs directory under
the root when create phy, then phy drivers can add debugfs files.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20230513092218.21139-1-chunfeng.yun@mediatek.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Chunfeng Yun 2023-05-13 17:22:17 +08:00 committed by Vinod Koul
parent 63c85ad0cd
commit 9169477206
2 changed files with 16 additions and 0 deletions
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14
drivers/phy/phy-core.c
View File

@ -11,6 +11,7 @@
#include <linux/export.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/of.h>
@ -20,6 +21,7 @@
#include <linux/regulator/consumer.h>
static struct class *phy_class;
static struct dentry *phy_debugfs_root;
static DEFINE_MUTEX(phy_provider_mutex);
static LIST_HEAD(phy_provider_list);
static LIST_HEAD(phys);
@ -996,6 +998,8 @@ struct phy *phy_create(struct device *dev, struct device_node *node,
pm_runtime_no_callbacks(&phy->dev);
}
phy->debugfs = debugfs_create_dir(dev_name(&phy->dev), phy_debugfs_root);
return phy;
put_dev:
@ -1226,6 +1230,7 @@ static void phy_release(struct device *dev)
phy = to_phy(dev);
dev_vdbg(dev, "releasing '%s'\n", dev_name(dev));
debugfs_remove_recursive(phy->debugfs);
regulator_put(phy->pwr);
ida_simple_remove(&phy_ida, phy->id);
kfree(phy);
@ -1242,6 +1247,15 @@ static int __init phy_core_init(void)
phy_class->dev_release = phy_release;
phy_debugfs_root = debugfs_create_dir("phy", NULL);
return 0;
}
device_initcall(phy_core_init);
static void __exit phy_core_exit(void)
{
debugfs_remove_recursive(phy_debugfs_root);
class_destroy(phy_class);
}
module_exit(phy_core_exit);

2
include/linux/phy/phy.h
View File

@ -148,6 +148,7 @@ struct phy_attrs {
* @power_count: used to protect when the PHY is used by multiple consumers
* @attrs: used to specify PHY specific attributes
* @pwr: power regulator associated with the phy
* @debugfs: debugfs directory
*/
struct phy {
struct device dev;
@ -158,6 +159,7 @@ struct phy {
int power_count;
struct phy_attrs attrs;
struct regulator *pwr;
struct dentry *debugfs;
};
/**