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| author | Luke D. Jones <luke@ljones.dev> | 2024-04-04 02:16:51 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2024-04-08 18:30:27 +0200 |
| commit | a94e8a56f9e1258d2f4ce613976207d0c02eb181 (patch) | |
| tree | 0a88911542a95aca4ef6452d929aeff9b38a8e4b /drivers/platform/x86/asus-wmi.c | |
| parent | platform/x86: asus-wmi: ROG Ally increase wait time, allow MCU powersave (diff) | |
| download | linux-a94e8a56f9e1258d2f4ce613976207d0c02eb181.tar.xz linux-a94e8a56f9e1258d2f4ce613976207d0c02eb181.zip | |
platform/x86: asus-wmi: Add support for MCU powersave
Add support for an MCU powersave WMI call. This is intended to set the
MCU in to a low-power mode when sleeping. This mode can cut sleep power
use by around half.
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Luke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20240404001652.86207-9-luke@ljones.dev
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/asus-wmi.c')
| -rw-r--r-- | drivers/platform/x86/asus-wmi.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index f1aff0d449a0..e9e572474677 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -1303,6 +1303,53 @@ static ssize_t nv_temp_target_show(struct device *dev, } static DEVICE_ATTR_RW(nv_temp_target); +/* Ally MCU Powersave ********************************************************/ +static ssize_t mcu_powersave_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct asus_wmi *asus = dev_get_drvdata(dev); + int result; + + result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_MCU_POWERSAVE); + if (result < 0) + return result; + + return sysfs_emit(buf, "%d\n", result); +} + +static ssize_t mcu_powersave_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int result, err; + u32 enable; + + struct asus_wmi *asus = dev_get_drvdata(dev); + + result = kstrtou32(buf, 10, &enable); + if (result) + return result; + + if (enable > 1) + return -EINVAL; + + err = asus_wmi_set_devstate(ASUS_WMI_DEVID_MCU_POWERSAVE, enable, &result); + if (err) { + pr_warn("Failed to set MCU powersave: %d\n", err); + return err; + } + + if (result > 1) { + pr_warn("Failed to set MCU powersave (result): 0x%x\n", result); + return -EIO; + } + + sysfs_notify(&asus->platform_device->dev.kobj, NULL, "mcu_powersave"); + + return count; +} +static DEVICE_ATTR_RW(mcu_powersave); + /* Battery ********************************************************************/ /* The battery maximum charging percentage */ @@ -4317,6 +4364,7 @@ static struct attribute *platform_attributes[] = { &dev_attr_ppt_platform_sppt.attr, &dev_attr_nv_dynamic_boost.attr, &dev_attr_nv_temp_target.attr, + &dev_attr_mcu_powersave.attr, &dev_attr_boot_sound.attr, &dev_attr_panel_od.attr, &dev_attr_mini_led_mode.attr, @@ -4370,6 +4418,8 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj, devid = ASUS_WMI_DEVID_NV_DYN_BOOST; else if (attr == &dev_attr_nv_temp_target.attr) devid = ASUS_WMI_DEVID_NV_THERM_TARGET; + else if (attr == &dev_attr_mcu_powersave.attr) + devid = ASUS_WMI_DEVID_MCU_POWERSAVE; else if (attr == &dev_attr_boot_sound.attr) devid = ASUS_WMI_DEVID_BOOT_SOUND; else if (attr == &dev_attr_panel_od.attr) |