Add support for toggling the BIOS POST sound on some ASUS laptops.
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Signed-off-by: Luke D. Jones <luke@xxxxxxxxxx>
---
.../ABI/testing/sysfs-platform-asus-wmi | 9 ++++
drivers/platform/x86/asus-wmi.c | 51 +++++++++++++++++++
include/linux/platform_data/x86/asus-wmi.h | 3 ++
3 files changed, 63 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi
index ef1ac1a20a71..72933527d2e4 100644
--- a/Documentation/ABI/testing/sysfs-platform-asus-wmi
+++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
@@ -194,3 +194,12 @@ Contact: "Luke Jones" <luke@xxxxxxxxxx>
Description:
Set the target temperature limit of the Nvidia dGPU:
* min=75, max=87
+
+What: /sys/devices/platform/<platform>/boot_sound
+Date: Apr 2024
+KernelVersion: 6.10
+Contact: "Luke Jones" <luke@xxxxxxxxxx>
+Description:
+ Set if the BIOS POST sound is played on boot.
+ * 0 - False,
+ * 1 - True
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 6896d056d227..6c353b8e8da9 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -2115,6 +2115,54 @@ static ssize_t panel_od_store(struct device *dev,
}
static DEVICE_ATTR_RW(panel_od);
+/* Bootup sound ***************************************************************/
+
+static ssize_t boot_sound_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_BOOT_SOUND);
+ if (result < 0)
+ return result;
+
+ return sysfs_emit(buf, "%d\n", result);
+}
+
+static ssize_t boot_sound_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int result, err;
+ u32 snd;
+
+ struct asus_wmi *asus = dev_get_drvdata(dev);
+
+ result = kstrtou32(buf, 10, &snd);
+ if (result)
+ return result;
+
+ if (snd > 1)
+ return -EINVAL;
+
+ err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BOOT_SOUND, snd, &result);
+ if (err) {
+ pr_warn("Failed to set boot sound: %d\n", err);
+ return err;
+ }
+
+ if (result > 1) {
+ pr_warn("Failed to set panel boot sound (result): 0x%x\n", result);
+ return -EIO;
+ }
+
+ sysfs_notify(&asus->platform_device->dev.kobj, NULL, "boot_sound");
+
+ return count;
+}
+static DEVICE_ATTR_RW(boot_sound);
+
/* Mini-LED mode **************************************************************/
static ssize_t mini_led_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -4207,6 +4255,7 @@ 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_boot_sound.attr,
&dev_attr_panel_od.attr,
&dev_attr_mini_led_mode.attr,
&dev_attr_available_mini_led_mode.attr,
@@ -4259,6 +4308,8 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
ok = asus->nv_dyn_boost_available;
else if (attr == &dev_attr_nv_temp_target.attr)
ok = asus->nv_temp_tgt_available;
+ else if (attr == &dev_attr_boot_sound.attr)
+ devid = ASUS_WMI_DEVID_BOOT_SOUND;
else if (attr == &dev_attr_panel_od.attr)
ok = asus->panel_overdrive_available;
else if (attr == &dev_attr_mini_led_mode.attr)
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
index 3e9a01467c67..3eb5cd6773ad 100644
--- a/include/linux/platform_data/x86/asus-wmi.h
+++ b/include/linux/platform_data/x86/asus-wmi.h
@@ -137,6 +137,9 @@
/* TUF laptop RGB power/state */
#define ASUS_WMI_DEVID_TUF_RGB_STATE 0x00100057
+/* Bootup sound control */
+#define ASUS_WMI_DEVID_BOOT_SOUND 0x00130022
+
/* DSTS masks */
#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
--
2.44.0
