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Date: Mon, 8 Aug 2022 15:04:17 +1200
From: "Luke D. Jones" <luke@...nes.dev>
To: hdegoede@...hat.com
Cc: markgross@...nel.org, platform-driver-x86@...r.kernel.org,
linux-kernel@...r.kernel.org, "Luke D. Jones" <luke@...nes.dev>
Subject: [PATCH v2 3/6] asus-wmi: Implement TUF laptop keyboard power states
Adds support for setting various power states of TUF keyboards.
These states are combinations of:
- boot, set if a boot animation is shown on keyboard
- awake, set if the keyboard LEDs are visible while laptop is on
- sleep, set if an animation is displayed while the laptop is suspended
- keyboard (unknown effect)
Adds two sysfs attributes to asus-nb-wmi:
- keyboard_rgb_state
- keyboard_rgb_state_index
Signed-off-by: Luke D. Jones <luke@...nes.dev>
---
drivers/platform/x86/asus-wmi.c | 74 ++++++++++++++++++++++
include/linux/platform_data/x86/asus-wmi.h | 2 +
2 files changed, 76 insertions(+)
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 4c2bdd9dac30..9b2c54726955 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -246,6 +246,7 @@ struct asus_wmi {
bool dgpu_disable_available;
bool dgpu_disable;
+ bool keyboard_rgb_state_available;
bool keyboard_rgb_mode_available;
struct keyboard_rgb_led keyboard_rgb_mode;
@@ -820,6 +821,68 @@ static ssize_t keyboard_rgb_mode_index_show(struct device *device,
static DEVICE_ATTR_RO(keyboard_rgb_mode_index);
+/* TUF Laptop Keyboard RGB States *********************************************/
+static int keyboard_rgb_state_check_present(struct asus_wmi *asus)
+{
+ u32 result;
+ int err;
+
+ asus->keyboard_rgb_state_available = false;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_TUF_RGB_STATE, &result);
+ if (err) {
+ if (err == -ENODEV)
+ return 0;
+ return err;
+ }
+
+ if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
+ asus->keyboard_rgb_state_available = true;
+
+ return 0;
+}
+
+static ssize_t keyboard_rgb_state_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ u8 flags, save, boot, awake, sleep, keyboard;
+ int err;
+ u32 ret;
+
+ flags = 0;
+ if (sscanf(buf, "%hhd %hhd %hhd %hhd %hhd", &save, &boot, &awake, &sleep, &keyboard) != 5)
+ return -EINVAL;
+
+ save = save == 0 ? 0x0100 : 0x0000;
+ if (boot)
+ flags |= 0x02;
+ if (awake)
+ flags |= 0x08;
+ if (sleep)
+ flags |= 0x20;
+ if (keyboard)
+ flags |= 0x80;
+
+ err = asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS,
+ ASUS_WMI_DEVID_TUF_RGB_STATE, 0xBD | save | (flags << 16), 0, &ret);
+ if (err)
+ return err;
+
+ return count;
+}
+
+static DEVICE_ATTR_WO(keyboard_rgb_state);
+
+static ssize_t keyboard_rgb_state_index_show(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%s\n", "save boot awake sleep keyboard");
+}
+
+static DEVICE_ATTR_RO(keyboard_rgb_state_index);
+
/* Battery ********************************************************************/
/* The battery maximum charging percentage */
@@ -3412,6 +3475,8 @@ static struct attribute *platform_attributes[] = {
&dev_attr_dgpu_disable.attr,
&dev_attr_keyboard_rgb_mode.attr,
&dev_attr_keyboard_rgb_mode_index.attr,
+ &dev_attr_keyboard_rgb_state.attr,
+ &dev_attr_keyboard_rgb_state_index.attr,
&dev_attr_lid_resume.attr,
&dev_attr_als_enable.attr,
&dev_attr_fan_boost_mode.attr,
@@ -3446,6 +3511,10 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
ok = asus->keyboard_rgb_mode_available;
else if (attr == &dev_attr_keyboard_rgb_mode_index.attr)
ok = asus->keyboard_rgb_mode_available;
+ else if (attr == &dev_attr_keyboard_rgb_state.attr)
+ ok = asus->keyboard_rgb_state_available;
+ else if (attr == &dev_attr_keyboard_rgb_state_index.attr)
+ ok = asus->keyboard_rgb_state_available;
else if (attr == &dev_attr_fan_boost_mode.attr)
ok = asus->fan_boost_mode_available;
else if (attr == &dev_attr_throttle_thermal_policy.attr)
@@ -3719,6 +3788,10 @@ static int asus_wmi_add(struct platform_device *pdev)
if (err)
goto fail_keyboard_rgb_mode;
+ err = keyboard_rgb_state_check_present(asus);
+ if (err)
+ goto fail_keyboard_rgb_state;
+
err = fan_boost_mode_check_present(asus);
if (err)
goto fail_fan_boost_mode;
@@ -3834,6 +3907,7 @@ static int asus_wmi_add(struct platform_device *pdev)
fail_egpu_enable:
fail_dgpu_disable:
fail_keyboard_rgb_mode:
+fail_keyboard_rgb_state:
fail_platform:
fail_panel_od:
kfree(asus);
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
index d63c9945a17d..b5c966798ef8 100644
--- a/include/linux/platform_data/x86/asus-wmi.h
+++ b/include/linux/platform_data/x86/asus-wmi.h
@@ -100,6 +100,8 @@
/* TUF laptop RGB control */
#define ASUS_WMI_DEVID_TUF_RGB_MODE 0x00100056
+/* TUF laptop RGB state control */
+#define ASUS_WMI_DEVID_TUF_RGB_STATE 0x00100057
/* DSTS masks */
#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
--
2.37.1
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