Whether to turn CnQF on/off by default upon driver load would be decided
by a BIOS flag. Add a sysfs node to provide a way to the user whether to
use static slider or CnQF .
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx>
---
drivers/platform/x86/amd/pmf/cnqf.c | 52 +++++++++++++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/drivers/platform/x86/amd/pmf/cnqf.c b/drivers/platform/x86/amd/pmf/cnqf.c
index 8c6756faab25..2b03ae1ad37f 100644
--- a/drivers/platform/x86/amd/pmf/cnqf.c
+++ b/drivers/platform/x86/amd/pmf/cnqf.c
@@ -302,9 +302,59 @@ void amd_pmf_load_defaults_cnqf(struct amd_pmf_dev *dev)
config_store.trans_prio[i] = i;
}
+static ssize_t feat_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct amd_pmf_dev *pdev = dev_get_drvdata(dev);
+ int result, src;
+ bool enabled;
+ u8 mode;
+
+ result = kstrtobool(buf, &enabled);
+ if (result)
+ return result;
+
+ src = amd_pmf_get_power_source();
+ pdev->cnqf_feat = enabled;
+ if (pdev->cnqf_feat) {
+ amd_pmf_handle_cnqf(pdev, SLIDER_OP_SET, src, config_store.current_mode, NULL);
+ } else {
+ pdev->cnqf_running = false;
+ mode = amd_pmf_get_pprof_modes(pdev);
+ amd_pmf_update_slider(pdev, SLIDER_OP_SET, mode, NULL);
+ }
+
+ dev_dbg(pdev->dev, "Received CnQF %s\n", enabled ? "on" : "off");
+ return count;
+}
+
+static ssize_t feat_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct amd_pmf_dev *pdev = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%s\n", pdev->cnqf_feat ? "on" : "off");
+}
+
+static DEVICE_ATTR_RW(feat);
+
+static struct attribute *cnqf_feature_attrs[] = {
+ &dev_attr_feat.attr,
+ NULL
+};
+
+static const struct attribute_group cnqf_feature_attribute_group = {
+ .attrs = cnqf_feature_attrs,
+ .name = "cnqf"
+};
+
void amd_pmf_deinit_cnqf(struct amd_pmf_dev *dev)
{
cancel_delayed_work_sync(&dev->work_buffer);
+ sysfs_remove_group(&dev->dev->kobj, &cnqf_feature_attribute_group);
+ kobject_uevent(&dev->dev->kobj, KOBJ_CHANGE);
}
void amd_pmf_init_cnqf(struct amd_pmf_dev *dev)
@@ -324,4 +374,6 @@ void amd_pmf_init_cnqf(struct amd_pmf_dev *dev)
/* update the thermal for CnQF */
src = amd_pmf_get_power_source();
amd_pmf_handle_cnqf(dev, SLIDER_OP_SET, src, config_store.current_mode, NULL);
+ ret = sysfs_create_group(&dev->dev->kobj, &cnqf_feature_attribute_group);
+ kobject_uevent(&dev->dev->kobj, KOBJ_CHANGE);
}
--
2.25.1
