diff options
Diffstat (limited to '0008-v4-platform-x86-asus-wmi-add-support-for-MCU-powersave.patch')
| -rw-r--r-- | 0008-v4-platform-x86-asus-wmi-add-support-for-MCU-powersave.patch | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/0008-v4-platform-x86-asus-wmi-add-support-for-MCU-powersave.patch b/0008-v4-platform-x86-asus-wmi-add-support-for-MCU-powersave.patch new file mode 100644 index 000000000000..7e94b8b6cd60 --- /dev/null +++ b/0008-v4-platform-x86-asus-wmi-add-support-for-MCU-powersave.patch @@ -0,0 +1,115 @@ +From: "Luke D. Jones" <luke@ljones.dev> +To: hdegoede@redhat.com +Cc: corentin.chary@gmail.com, ilpo.jarvinen@linux.intel.com, + platform-driver-x86@vger.kernel.org, + linux-kernel@vger.kernel.org, "Luke D. Jones" <luke@ljones.dev> +Subject: [PATCH v4 8/9] platform/x86: asus-wmi: Add support for MCU powersave +Date: Thu, 4 Apr 2024 13:16:51 +1300 [thread overview] +Message-ID: <20240404001652.86207-9-luke@ljones.dev> (raw) +In-Reply-To: <20240404001652.86207-1-luke@ljones.dev> + +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> +--- + .../ABI/testing/sysfs-platform-asus-wmi | 9 ++++ + drivers/platform/x86/asus-wmi.c | 50 +++++++++++++++++++ + 2 files changed, 59 insertions(+) + +diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi +index 72933527d2e4..28144371a0f1 100644 +--- a/Documentation/ABI/testing/sysfs-platform-asus-wmi ++++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi +@@ -203,3 +203,12 @@ Description: + Set if the BIOS POST sound is played on boot. + * 0 - False, + * 1 - True ++ ++What: /sys/devices/platform/<platform>/mcu_powersave ++Date: Apr 2024 ++KernelVersion: 6.10 ++Contact: "Luke Jones" <luke@ljones.dev> ++Description: ++ Set if the MCU can go in to low-power mode on system sleep ++ * 0 - False, ++ * 1 - True +diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c +index ab98f91e573c..d06d9e0c498c 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) +-- +2.44.0 |