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ACPI: platform_profile: Add choices attribute for class interface

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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>
This commit is contained in:
Mario Limonciello
2024-12-05 21:19:08 -06:00
committed by Ilpo Järvinen
parent 97cab71d71
commit 52a67be8ee
1 changed files with 41 additions and 0 deletions
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41
drivers/acpi/platform_profile.c
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@@ -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);