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From f7ff4d0624e23015698b408b3e0721ad0241a3ed Mon Sep 17 00:00:00 2001
From: "Luke D. Jones" <luke@ljones.dev>
Date: Sun, 4 Jun 2023 20:21:10 +1200
Subject: [PATCH 11/11] platform/x86: asus-wmi: support setting mini-LED mode
Support changing the mini-LED mode on some of the newer ASUS laptops.
Signed-off-by: Luke D. Jones <luke@ljones.dev>
---
.../ABI/testing/sysfs-platform-asus-wmi | 9 ++++
drivers/platform/x86/asus-wmi.c | 53 +++++++++++++++++++
include/linux/platform_data/x86/asus-wmi.h | 1 +
3 files changed, 63 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi
index 878daf7c2036..5624bdef49cb 100644
--- a/Documentation/ABI/testing/sysfs-platform-asus-wmi
+++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
@@ -117,3 +117,12 @@ Description:
Show if the egpu (XG Mobile) is correctly connected:
* 0 - False,
* 1 - True
+
+What: /sys/devices/platform/<platform>/mini_led_mode
+Date: Jun 2023
+KernelVersion: 6.5
+Contact: "Luke Jones" <luke@ljones.dev>
+Description:
+ Change the mini-LED mode:
+ * 0 - Single-zone,
+ * 1 - Multi-zone
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 26155bdc48da..e86366353008 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -267,6 +267,7 @@ struct asus_wmi {
bool battery_rsoc_available;
bool panel_overdrive_available;
+ bool mini_led_mode_available;
struct hotplug_slot hotplug_slot;
struct mutex hotplug_lock;
@@ -1765,6 +1766,54 @@ static ssize_t panel_od_store(struct device *dev,
}
static DEVICE_ATTR_RW(panel_od);
+/* Mini-LED mode **************************************************************/
+static ssize_t mini_led_mode_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_MINI_LED_MODE);
+ if (result < 0)
+ return result;
+
+ return sysfs_emit(buf, "%d\n", result);
+}
+
+static ssize_t mini_led_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int result, err;
+ u32 mode;
+
+ struct asus_wmi *asus = dev_get_drvdata(dev);
+
+ result = kstrtou32(buf, 10, &mode);
+ if (result)
+ return result;
+
+ if (mode > 1)
+ return -EINVAL;
+
+ err = asus_wmi_set_devstate(ASUS_WMI_DEVID_MINI_LED_MODE, mode, &result);
+
+ if (err) {
+ pr_warn("Failed to set mini-LED: %d\n", err);
+ return err;
+ }
+
+ if (result > 1) {
+ pr_warn("Failed to set mini-LED mode (result): 0x%x\n", result);
+ return -EIO;
+ }
+
+ sysfs_notify(&asus->platform_device->dev.kobj, NULL, "mini_led_mode");
+
+ return count;
+}
+static DEVICE_ATTR_RW(mini_led_mode);
+
/* Quirks *********************************************************************/
static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
@@ -3787,6 +3836,7 @@ static struct attribute *platform_attributes[] = {
&dev_attr_fan_boost_mode.attr,
&dev_attr_throttle_thermal_policy.attr,
&dev_attr_panel_od.attr,
+ &dev_attr_mini_led_mode.attr,
NULL
};
@@ -3824,6 +3874,8 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
ok = asus->throttle_thermal_policy_available;
else if (attr == &dev_attr_panel_od.attr)
ok = asus->panel_overdrive_available;
+ else if (attr == &dev_attr_mini_led_mode.attr)
+ ok = asus->mini_led_mode_available;
if (devid != -1)
ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
@@ -4086,6 +4138,7 @@ static int asus_wmi_add(struct platform_device *pdev)
asus->kbd_rgb_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_MODE);
asus->kbd_rgb_state_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_STATE);
asus->panel_overdrive_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PANEL_OD);
+ asus->mini_led_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_MINI_LED_MODE);
err = fan_boost_mode_check_present(asus);
if (err)
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
index bfc284fe4d68..193efdca4545 100644
--- a/include/linux/platform_data/x86/asus-wmi.h
+++ b/include/linux/platform_data/x86/asus-wmi.h
@@ -70,6 +70,7 @@
#define ASUS_WMI_DEVID_CAMERA 0x00060013
#define ASUS_WMI_DEVID_LID_FLIP 0x00060062
#define ASUS_WMI_DEVID_LID_FLIP_ROG 0x00060077
+#define ASUS_WMI_DEVID_MINI_LED_MODE 0x0005001E
/* Storage */
#define ASUS_WMI_DEVID_CARDREADER 0x00080013
--
2.40.1
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