---
drivers/platform/x86/ideapad-laptop.c | 157
+++++++++++++++++++++++++-
1 file changed, 156 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/ideapad-laptop.c
b/drivers/platform/x86/ideapad-laptop.c
index c64dfc56651d..acea4aa8eac3 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -32,6 +32,7 @@
#include <linux/sysfs.h>
#include <linux/types.h>
#include <linux/wmi.h>
+#include <sound/control.h>
#include "ideapad-laptop.h"
#include <acpi/video.h>
@@ -1298,6 +1299,15 @@ static const struct key_entry ideapad_keymap[]
= {
{ KE_END },
};
+/*
+ * Input parameters to mute/unmute audio LED and Mic LED */ struct
+wmi_led_args {
+ u8 ID;
+ u8 SubID;
+ u16 Value;
+};
+
static int ideapad_input_init(struct ideapad_private *priv)
{
struct input_dev *inputdev;
@@ -2023,15 +2033,145 @@ static void ideapad_check_features(struct
ideapad_private *priv)
/*
* WMI driver
*/
+#define IDEAPAD_ACPI_LED_MAX (((SNDRV_CTL_ELEM_ACCESS_MIC_LED -\
+ SNDRV_CTL_ELEM_ACCESS_SPK_LED) >>
SNDRV_CTL_ELEM_ACCESS_LED_SHIFT)
++ 1)
+
enum ideapad_wmi_event_type {
IDEAPAD_WMI_EVENT_ESC,
IDEAPAD_WMI_EVENT_FN_KEYS,
+ IDEAPAD_WMI_EVENT_LUD_KEYS,
};
+#define WMI_LUD_GET_SUPPORT 1
+#define WMI_LUD_SET_FEATURE 2
+
+#define WMI_LUD_GET_MICMUTE_LED_VER 20
+#define WMI_LUD_GET_AUDIOMUTE_LED_VER 26
+
+#define WMI_LUD_SUPPORT_MICMUTE_LED_VER 25
+#define WMI_LUD_SUPPORT_AUDIOMUTE_LED_VER 27
+
struct ideapad_wmi_private {
enum ideapad_wmi_event_type event;
+ struct led_classdev cdev[IDEAPAD_ACPI_LED_MAX];
};
+static struct wmi_device *led_wdev;
+
+enum mute_led_type {
+ MIC_MUTE,
+ AUDIO_MUTE,
+};
+
+static int ideapad_wmi_mute_led_set(enum mute_led_type led_type,
struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+
+{
+ struct wmi_led_args led_arg = {0, 0, 0};
+ struct acpi_buffer input;
+ acpi_status status;
+
+ if (led_type == MIC_MUTE)
+ led_arg.ID = brightness == LED_ON ? 1 : 2;
+ else if (led_type == AUDIO_MUTE)
+ led_arg.ID = brightness == LED_ON ? 4 : 5;
+ else
+ return -EINVAL;
+
+ input.length = sizeof(struct wmi_led_args);
+ input.pointer = &led_arg;
+ status = wmidev_evaluate_method(led_wdev, 0, WMI_LUD_SET_FEATURE,
+&input, NULL);
+
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ return 0;
+}
+
+static int ideapad_wmi_audiomute_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+
+{
+ return ideapad_wmi_mute_led_set(AUDIO_MUTE, led_cdev,
brightness); }
+
+static int ideapad_wmi_micmute_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness) {
+ return ideapad_wmi_mute_led_set(MIC_MUTE, led_cdev, brightness); }
+
+static int ideapad_wmi_leds_init(enum mute_led_type led_type, struct
+device *dev) {
+ struct ideapad_wmi_private *wpriv = dev_get_drvdata(dev);
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer input;
+ union acpi_object *obj;
+ int led_version, err = 0;
+ unsigned int wmiarg;
+ acpi_status status;
+
+ if (led_type == MIC_MUTE)
+ wmiarg = WMI_LUD_GET_MICMUTE_LED_VER;
+ else if (led_type == AUDIO_MUTE)
+ wmiarg = WMI_LUD_GET_AUDIOMUTE_LED_VER;
+ else
+ return -EINVAL;
+
+ input.length = sizeof(wmiarg);
+ input.pointer = &wmiarg;
+ status = wmidev_evaluate_method(led_wdev, 0,
WMI_LUD_GET_SUPPORT, &input, &output);
+ if (ACPI_FAILURE(status)) {
+ kfree(output.pointer);
+ return -EIO;
+ }
+ obj = output.pointer;
+ led_version = obj->integer.value;
+
+ wpriv->cdev[led_type].max_brightness = LED_ON;
+ wpriv->cdev[led_type].dev = dev;
+ wpriv->cdev[led_type].flags = LED_CORE_SUSPENDRESUME;
+
+ if (led_type == MIC_MUTE) {
+ if (led_version != WMI_LUD_SUPPORT_MICMUTE_LED_VER) {
+ dev_info(dev, "This product doesn't support mic
mute LED.\n");
+ return -EIO;
+ }
+ wpriv->cdev[led_type].name = "platform::micmute";
+ wpriv->cdev[led_type].brightness_set_blocking =
&ideapad_wmi_micmute_led_set;
+ wpriv->cdev[led_type].default_trigger = "audio-micmute";
+
+ err = devm_led_classdev_register(dev,
&wpriv->cdev[led_type]);
+ if (err < 0) {
+ dev_err(dev, "Could not register mic mute LED :
%d\n", err);
+ led_classdev_unregister(&wpriv->cdev[led_type]);
+ }
+ } else {
+ if (led_version != WMI_LUD_SUPPORT_AUDIOMUTE_LED_VER) {
+ dev_info(dev, "This product doesn't support
audio mute LED.\n");
+ return -EIO;
+ }
+ wpriv->cdev[led_type].name = "platform::mute";
+ wpriv->cdev[led_type].brightness_set_blocking =
&ideapad_wmi_audiomute_led_set;
+ wpriv->cdev[led_type].default_trigger = "audio-mute";
+
+ err = devm_led_classdev_register(dev,
&wpriv->cdev[led_type]);
+ if (err < 0) {
+ dev_err(dev, "Could not register audio mute
LED: %d\n", err);
+ led_classdev_unregister(&wpriv->cdev[led_type]);
+ }
+ }
+
+ kfree(obj);
+ return err;
+}
+
+static void ideapad_wmi_leds_setup(struct device *dev) {
+ ideapad_wmi_leds_init(MIC_MUTE, dev);
+ ideapad_wmi_leds_init(AUDIO_MUTE, dev); }
+
static int ideapad_wmi_probe(struct wmi_device *wdev, const void
*context)
{
struct ideapad_wmi_private *wpriv;
@@ -2043,6 +2183,12 @@ static int ideapad_wmi_probe(struct wmi_device
*wdev, const void *context)
*wpriv = *(const struct ideapad_wmi_private *)context;
dev_set_drvdata(&wdev->dev, wpriv);
+
+ if (wpriv->event == IDEAPAD_WMI_EVENT_LUD_KEYS) {
+ led_wdev = wdev;
+ ideapad_wmi_leds_setup(&wdev->dev);
+ }
+
return 0;
}
@@ -2088,6 +2234,9 @@ static void ideapad_wmi_notify(struct
wmi_device *wdev, union acpi_object *data)
data->integer.value |
IDEAPAD_WMI_KEY);
break;
+ case IDEAPAD_WMI_EVENT_LUD_KEYS:
+ break;
+
}
}
@@ -2099,10 +2248,16 @@ static const struct ideapad_wmi_private
ideapad_wmi_context_fn_keys = {
.event = IDEAPAD_WMI_EVENT_FN_KEYS
};
+static const struct ideapad_wmi_private ideapad_wmi_context_LUD_keys
= {
+ .event = IDEAPAD_WMI_EVENT_LUD_KEYS
+};
+
static const struct wmi_device_id ideapad_wmi_ids[] = {
{ "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6",
&ideapad_wmi_context_esc }, /* Yoga 3 */
{ "56322276-8493-4CE8-A783-98C991274F5E",
&ideapad_wmi_context_esc }, /* Yoga 700 */
- { "8FC0DE0C-B4E4-43FD-B0F3-8871711C1294",
&ideapad_wmi_context_fn_keys }, /* Legion 5 */
+ { "8FC0DE0C-B4E4-43FD-B0F3-8871711C1294",
&ideapad_wmi_context_fn_keys }, /* FN keys */
+ { "CE6C0974-0407-4F50-88BA-4FC3B6559AD8",
+&ideapad_wmi_context_LUD_keys }, /* Util data */
+
{},
};
MODULE_DEVICE_TABLE(wmi, ideapad_wmi_ids);
