From: Mario Limonciello <mario.limonciello@amd.com>
Date: Fri, 6 Dec 2024 03:19:08 +0000 (-0600)
Subject: ACPI: platform_profile: Add choices attribute for class interface
X-Git-Tag: v6.14-rc1~117^2~77^2~10
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=52a67be8ee274b14984df1a9f7ae157e11bc08ab;p=thirdparty%2Flinux.git

ACPI: platform_profile: Add choices attribute for class interface

The `choices` file will show all possible choices that a given platform
profile handler can support.

Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20241206031918.1537-13-mario.limonciello@amd.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index 49a8bd6e97ece..885f41bca6c25 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -25,6 +25,28 @@ static_assert(ARRAY_SIZE(profile_names) == PLATFORM_PROFILE_LAST);
 
 static DEFINE_IDA(platform_profile_ida);
 
+/**
+ * _commmon_choices_show - Show the available profile choices
+ * @choices: The available profile choices
+ * @buf: The buffer to write to
+ *
+ * Return: The number of bytes written
+ */
+static ssize_t _commmon_choices_show(unsigned long *choices, char *buf)
+{
+	int i, len = 0;
+
+	for_each_set_bit(i, choices, PLATFORM_PROFILE_LAST) {
+		if (len == 0)
+			len += sysfs_emit_at(buf, len, "%s", profile_names[i]);
+		else
+			len += sysfs_emit_at(buf, len, " %s", profile_names[i]);
+	}
+	len += sysfs_emit_at(buf, len, "\n");
+
+	return len;
+}
+
 /**
  * name_show - Show the name of the profile handler
  * @dev: The device
@@ -41,8 +63,27 @@ static ssize_t name_show(struct device *dev, struct device_attribute *attr, char
 }
 static DEVICE_ATTR_RO(name);
 
+/**
+ * choices_show - Show the available profile choices
+ * @dev: The device
+ * @attr: The attribute
+ * @buf: The buffer to write to
+ *
+ * Return: The number of bytes written
+ */
+static ssize_t choices_show(struct device *dev,
+			    struct device_attribute *attr,
+			    char *buf)
+{
+	struct platform_profile_handler *handler = dev_get_drvdata(dev);
+
+	return _commmon_choices_show(handler->choices, buf);
+}
+static DEVICE_ATTR_RO(choices);
+
 static struct attribute *profile_attrs[] = {
 	&dev_attr_name.attr,
+	&dev_attr_choices.attr,
 	NULL
 };
 ATTRIBUTE_GROUPS(profile);