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 | 57 +++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/drivers/platform/x86/amd/pmf/cnqf.c b/drivers/platform/x86/amd/pmf/cnqf.c index aebcef778a0b..8d0c1eff1659 100644 --- a/drivers/platform/x86/amd/pmf/cnqf.c +++ b/drivers/platform/x86/amd/pmf/cnqf.c @@ -294,9 +294,64 @@ 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 mode = amd_pmf_get_pprof_modes(pdev); + int result, src; + bool input; + + result = kstrtobool(buf, &input); + if (result) + return result; + + src = amd_pmf_get_power_source(); + pdev->cnqf_enabled = input; + + if (mode < 0) + return mode; + + if (pdev->cnqf_enabled) { + amd_pmf_set_cnqf(pdev, src, config_store.current_mode, NULL); + } else { + if (is_apmf_func_supported(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) { + amd_pmf_init_sps(pdev); + amd_pmf_update_slider(pdev, SLIDER_OP_SET, mode, NULL); + } + } + + dev_dbg(pdev->dev, "Received CnQF %s\n", input ? "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_enabled ? "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) @@ -316,4 +371,6 @@ void amd_pmf_init_cnqf(struct amd_pmf_dev *dev) /* update the thermal for CnQF */ src = amd_pmf_get_power_source(); amd_pmf_set_cnqf(dev, 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