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Message-Id: <20220809025054.1626339-4-luke@ljones.dev>
Date: Tue, 9 Aug 2022 14:50:51 +1200
From: "Luke D. Jones" <luke@...nes.dev>
To: hdegoede@...hat.com
Cc: andy.shevchenko@...il.com, pobrn@...tonmail.com, pavel@....cz,
platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
"Luke D. Jones" <luke@...nes.dev>
Subject: [PATCH v3 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>
---
.../ABI/testing/sysfs-platform-asus-wmi | 18 ++++-
drivers/platform/x86/asus-wmi.c | 72 +++++++++++++++++++
include/linux/platform_data/x86/asus-wmi.h | 2 +
3 files changed, 91 insertions(+), 1 deletion(-)
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi
index a9128fa5cc65..3e3f2dcf9bfa 100644
--- a/Documentation/ABI/testing/sysfs-platform-asus-wmi
+++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
@@ -86,4 +86,20 @@ Description:
until the keyboard_rgb_save attribute is set (write-only):
* 0 - slow
* 1 - medium
- * 2 - fast
\ No newline at end of file
+ * 2 - fast
+
+What: /sys/devices/platform/<platform>/keyboard_rgb_state
+Date: Aug 2022
+KernelVersion: 6.1
+Contact: "Luke Jones" <luke@...nes.dev>
+Description:
+ Set some RGB keyboard power states (write-only).
+
+ The accepted input is "boot awake sleep keyboard", where "n n n n n"
+ options are:
+ * save - 0 or 1, if 0 then settings are not retained on boot
+ * boot - 0 or 1, controls if a boot animation is shown
+ * awake - 0 or 1, controls if the keyboard LED are on during awake
+ * sleep - 0 or 1, controls if a suspended animation is shown.
+ This is only active if the AC is connected.
+ * keyboard - 0 or 1, unknown what effect this really has
\ No newline at end of file
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index fa0cc2895a66..719223804c0e 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_led;
@@ -845,6 +846,66 @@ static ssize_t keyboard_rgb_speed_store(struct device *device,
}
static DEVICE_ATTR_WO(keyboard_rgb_speed);
+/* 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 */
@@ -3438,6 +3499,8 @@ static struct attribute *platform_attributes[] = {
&dev_attr_keyboard_rgb_save.attr,
&dev_attr_keyboard_rgb_mode.attr,
&dev_attr_keyboard_rgb_speed.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,
@@ -3474,6 +3537,10 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
ok = asus->keyboard_rgb_mode_available;
else if (attr == &dev_attr_keyboard_rgb_speed.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)
@@ -3747,6 +3814,10 @@ 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;
@@ -3862,6 +3933,7 @@ 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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