platform/x86: ideapad-laptop: add FnLock LED class device
Some Ideapad/Yoga Laptops have an FnLock LED in the Esc key. Expose Fnlock as an LED class device for easier OSD support. Signed-off-by: Gergo Koteles <soyer@irl.hu> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/2db08c948568a8d5352780864956c3271b4e42ce.1712063200.git.soyer@irl.hu Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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@ -152,6 +152,11 @@ struct ideapad_private {
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struct led_classdev led;
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unsigned int last_brightness;
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} kbd_bl;
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struct {
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bool initialized;
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struct led_classdev led;
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unsigned int last_brightness;
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} fn_lock;
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};
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static bool no_bt_rfkill;
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@ -531,6 +536,19 @@ static int ideapad_fn_lock_set(struct ideapad_private *priv, bool state)
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state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
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}
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static void ideapad_fn_lock_led_notify(struct ideapad_private *priv, int brightness)
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{
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if (!priv->fn_lock.initialized)
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return;
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if (brightness == priv->fn_lock.last_brightness)
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return;
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priv->fn_lock.last_brightness = brightness;
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led_classdev_notify_brightness_hw_changed(&priv->fn_lock.led, brightness);
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}
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static ssize_t fn_lock_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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@ -561,6 +579,8 @@ static ssize_t fn_lock_store(struct device *dev,
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if (err)
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return err;
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ideapad_fn_lock_led_notify(priv, state);
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return count;
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}
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@ -1479,6 +1499,65 @@ static void ideapad_kbd_bl_exit(struct ideapad_private *priv)
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led_classdev_unregister(&priv->kbd_bl.led);
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}
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/*
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* FnLock LED
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*/
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static enum led_brightness ideapad_fn_lock_led_cdev_get(struct led_classdev *led_cdev)
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{
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struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, fn_lock.led);
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return ideapad_fn_lock_get(priv);
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}
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static int ideapad_fn_lock_led_cdev_set(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, fn_lock.led);
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return ideapad_fn_lock_set(priv, brightness);
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}
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static int ideapad_fn_lock_led_init(struct ideapad_private *priv)
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{
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int brightness, err;
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if (!priv->features.fn_lock)
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return -ENODEV;
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if (WARN_ON(priv->fn_lock.initialized))
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return -EEXIST;
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priv->fn_lock.led.max_brightness = 1;
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brightness = ideapad_fn_lock_get(priv);
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if (brightness < 0)
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return brightness;
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priv->fn_lock.last_brightness = brightness;
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priv->fn_lock.led.name = "platform::" LED_FUNCTION_FNLOCK;
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priv->fn_lock.led.brightness_get = ideapad_fn_lock_led_cdev_get;
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priv->fn_lock.led.brightness_set_blocking = ideapad_fn_lock_led_cdev_set;
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priv->fn_lock.led.flags = LED_BRIGHT_HW_CHANGED;
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err = led_classdev_register(&priv->platform_device->dev, &priv->fn_lock.led);
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if (err)
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return err;
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priv->fn_lock.initialized = true;
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return 0;
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}
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static void ideapad_fn_lock_led_exit(struct ideapad_private *priv)
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{
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if (!priv->fn_lock.initialized)
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return;
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priv->fn_lock.initialized = false;
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led_classdev_unregister(&priv->fn_lock.led);
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}
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/*
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* module init/exit
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*/
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@ -1741,8 +1820,10 @@ static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data)
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if (priv->features.set_fn_lock_led) {
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int brightness = ideapad_fn_lock_get(priv);
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if (brightness >= 0)
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if (brightness >= 0) {
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ideapad_fn_lock_set(priv, brightness);
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ideapad_fn_lock_led_notify(priv, brightness);
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}
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}
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if (data->type != ACPI_TYPE_INTEGER) {
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@ -1754,6 +1835,10 @@ static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data)
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dev_dbg(&wdev->dev, "WMI fn-key event: 0x%llx\n",
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data->integer.value);
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/* 0x02 FnLock, 0x03 Esc */
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if (data->integer.value == 0x02 || data->integer.value == 0x03)
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ideapad_fn_lock_led_notify(priv, data->integer.value == 0x02);
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ideapad_input_report(priv,
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data->integer.value | IDEAPAD_WMI_KEY);
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@ -1847,6 +1932,14 @@ static int ideapad_acpi_add(struct platform_device *pdev)
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dev_info(&pdev->dev, "Keyboard backlight control not available\n");
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}
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err = ideapad_fn_lock_led_init(priv);
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if (err) {
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if (err != -ENODEV)
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dev_warn(&pdev->dev, "Could not set up FnLock LED: %d\n", err);
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else
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dev_info(&pdev->dev, "FnLock control not available\n");
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}
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/*
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* On some models without a hw-switch (the yoga 2 13 at least)
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* VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
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@ -1903,6 +1996,7 @@ backlight_failed:
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for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
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ideapad_unregister_rfkill(priv, i);
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ideapad_fn_lock_led_exit(priv);
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ideapad_kbd_bl_exit(priv);
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ideapad_input_exit(priv);
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@ -1930,6 +2024,7 @@ static void ideapad_acpi_remove(struct platform_device *pdev)
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for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
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ideapad_unregister_rfkill(priv, i);
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ideapad_fn_lock_led_exit(priv);
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ideapad_kbd_bl_exit(priv);
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ideapad_input_exit(priv);
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ideapad_debugfs_exit(priv);
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