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platform/x86: lenovo-wmi-camera: Use SW_CAMERA_LENS_COVER instead of KEY_CAMERA_ACESS

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Use SW_CAMERA_LENS_COVER instead of KEY_CAMERA_ACESS_ENABLE and
KEY_CAMERA_ACESS_DISABLE. When the camera toggle switch was hit,
the lenovo-wmi-camera driver would report an event code.

Signed-off-by: Ai Chao <aichao@kylinos.cn>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20250115022825.101986-1-aichao@kylinos.cn
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Ai Chao 2025-01-15 10:28:24 +08:00 committed by Ilpo Järvinen
parent 549fcf58cf
commit d98bf6a6ed
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
1 changed files with 44 additions and 25 deletions
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69
drivers/platform/x86/lenovo-wmi-camera.c
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@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/wmi.h>
#include <linux/cleanup.h>
#define WMI_LENOVO_CAMERABUTTON_EVENT_GUID "50C76F1F-D8E4-D895-0A3D-62F4EA400013"
@ -26,10 +27,38 @@ enum {
SW_CAMERA_ON = 1,
};
static int camera_shutter_input_setup(struct wmi_device *wdev, u8 camera_mode)
{
struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
int err;
priv->idev = input_allocate_device();
if (!priv->idev)
return -ENOMEM;
priv->idev->name = "Lenovo WMI Camera Button";
priv->idev->phys = "wmi/input0";
priv->idev->id.bustype = BUS_HOST;
priv->idev->dev.parent = &wdev->dev;
input_set_capability(priv->idev, EV_SW, SW_CAMERA_LENS_COVER);
input_report_switch(priv->idev, SW_CAMERA_LENS_COVER,
camera_mode == SW_CAMERA_ON ? 0 : 1);
input_sync(priv->idev);
err = input_register_device(priv->idev);
if (err) {
input_free_device(priv->idev);
priv->idev = NULL;
}
return err;
}
static void lenovo_wmi_notify(struct wmi_device *wdev, union acpi_object *obj)
{
struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
unsigned int keycode;
u8 camera_mode;
if (obj->type != ACPI_TYPE_BUFFER) {
@ -53,22 +82,24 @@ static void lenovo_wmi_notify(struct wmi_device *wdev, union acpi_object *obj)
return;
}
mutex_lock(&priv->notify_lock);
guard(mutex)(&priv->notify_lock);
keycode = camera_mode == SW_CAMERA_ON ?
KEY_CAMERA_ACCESS_ENABLE : KEY_CAMERA_ACCESS_DISABLE;
input_report_key(priv->idev, keycode, 1);
input_sync(priv->idev);
input_report_key(priv->idev, keycode, 0);
input_sync(priv->idev);
if (!priv->idev) {
if (camera_shutter_input_setup(wdev, camera_mode))
dev_warn(&wdev->dev, "Failed to register input device\n");
return;
}
mutex_unlock(&priv->notify_lock);
if (camera_mode == SW_CAMERA_ON)
input_report_switch(priv->idev, SW_CAMERA_LENS_COVER, 0);
else
input_report_switch(priv->idev, SW_CAMERA_LENS_COVER, 1);
input_sync(priv->idev);
}
static int lenovo_wmi_probe(struct wmi_device *wdev, const void *context)
{
struct lenovo_wmi_priv *priv;
int ret;
priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@ -76,21 +107,6 @@ static int lenovo_wmi_probe(struct wmi_device *wdev, const void *context)
dev_set_drvdata(&wdev->dev, priv);
priv->idev = devm_input_allocate_device(&wdev->dev);
if (!priv->idev)
return -ENOMEM;
priv->idev->name = "Lenovo WMI Camera Button";
priv->idev->phys = "wmi/input0";
priv->idev->id.bustype = BUS_HOST;
priv->idev->dev.parent = &wdev->dev;
input_set_capability(priv->idev, EV_KEY, KEY_CAMERA_ACCESS_ENABLE);
input_set_capability(priv->idev, EV_KEY, KEY_CAMERA_ACCESS_DISABLE);
ret = input_register_device(priv->idev);
if (ret)
return ret;
mutex_init(&priv->notify_lock);
return 0;
@ -100,6 +116,9 @@ static void lenovo_wmi_remove(struct wmi_device *wdev)
{
struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
if (priv->idev)
input_unregister_device(priv->idev);
mutex_destroy(&priv->notify_lock);
}