diff mbox series

[v5,10/20] ACPI: platform_profile: Add name attribute to class interface

Message ID 20241107060254.17615-11-mario.limonciello@amd.com
State Superseded
Headers show
Series Add support for binding ACPI platform profile to multiple drivers | expand

Commit Message

Mario Limonciello Nov. 7, 2024, 6:02 a.m. UTC 
The name attribute shows the name of the associated platform profile
handler.

Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
v5:
 * Drop newline
 * Add mutex for sysfs access
---
 drivers/acpi/platform_profile.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
diff mbox series

Patch

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index 9caf070f77f6a..f605c2bd35c68 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -25,8 +25,35 @@  static_assert(ARRAY_SIZE(profile_names) == PLATFORM_PROFILE_LAST);
 
 static DEFINE_IDA(platform_profile_ida);
 
+/**
+ * name_show - Show the name of the profile handler
+ * @dev: The device
+ * @attr: The attribute
+ * @buf: The buffer to write to
+ * Return: The number of bytes written
+ */
+static ssize_t name_show(struct device *dev,
+			 struct device_attribute *attr,
+			 char *buf)
+{
+	scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) {
+		struct platform_profile_handler *handler = dev_get_drvdata(dev);
+
+		return sysfs_emit(buf, "%s\n", handler->name);
+	}
+	return -ERESTARTSYS;
+}
+
+static DEVICE_ATTR_RO(name);
+static struct attribute *profile_attrs[] = {
+	&dev_attr_name.attr,
+	NULL
+};
+ATTRIBUTE_GROUPS(profile);
+
 static const struct class platform_profile_class = {
 	.name = "platform-profile",
+	.dev_groups = profile_groups,
 };
 
 static ssize_t platform_profile_choices_show(struct device *dev,