platform/x86: lenovo-yogabook: Abstract kbd backlight setting

Abstract kbd backlight setting.

This is a preparation patch for making lenovo-yogabook-wmi also work
on the Android version of the Yoga Book 1 which does not have a WMI
interface to deal with toggling the keyboard half between
touch-keyboard and wacom-digitizer mode.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230430165807.472798-13-hdegoede@redhat.com

diff --git a/drivers/platform/x86/lenovo-yogabook-wmi.c b/drivers/platform/x86/lenovo-yogabook-wmi.c
index e9274ba..7954559 100644 (file)
--- a/drivers/platform/x86/lenovo-yogabook-wmi.c
+++ b/drivers/platform/x86/lenovo-yogabook-wmi.c
@@ -31,6 +31,7 @@ struct yogabook_wmi {
        struct device *dig_dev;
        struct led_classdev *pen_led;
        struct gpio_desc *backside_hall_gpio;
+       int (*set_kbd_backlight)(struct yogabook_wmi *data, uint8_t level);
        int backside_hall_irq;
        struct work_struct work;
        struct led_classdev kbd_bl_led;
@@ -97,7 +98,7 @@ static void yogabook_wmi_work(struct work_struct *work)
                 * Must be done before releasing the keyboard touchscreen driver,
                 * so that the keyboard touchscreen dev is still in D0.
                 */
-               yogabook_wmi_set_kbd_backlight(data, 0);
+               data->set_kbd_backlight(data, 0);
                device_release_driver(data->kbd_dev);
                clear_bit(YB_KBD_IS_ON, &data->flags);
        }
@@ -113,7 +114,7 @@ static void yogabook_wmi_work(struct work_struct *work)
                if (r)
                        dev_warn(data->dev, "Reprobe of keyboard touchscreen failed: %d\n", r);
 
-               yogabook_wmi_set_kbd_backlight(data, data->brightness);
+               data->set_kbd_backlight(data, data->brightness);
                set_bit(YB_KBD_IS_ON, &data->flags);
        }
 
@@ -182,7 +183,7 @@ static int kbd_brightness_set(struct led_classdev *cdev,
        if (!test_bit(YB_KBD_IS_ON, &data->flags))
                return 0;
 
-       return yogabook_wmi_set_kbd_backlight(data, data->brightness);
+       return data->set_kbd_backlight(data, data->brightness);
 }
 
 static struct gpiod_lookup_table yogabook_wmi_gpios = {
@@ -232,7 +233,7 @@ static int yogabook_probe(struct device *dev, struct yogabook_wmi *data,
        data->backside_hall_irq = r;
 
        /* Set default brightness before enabling the IRQ */
-       yogabook_wmi_set_kbd_backlight(data, YB_KBD_BL_DEFAULT);
+       data->set_kbd_backlight(data, YB_KBD_BL_DEFAULT);
 
        r = request_irq(data->backside_hall_irq, yogabook_backside_hall_irq,
                        IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
@@ -294,6 +295,8 @@ static int yogabook_wmi_probe(struct wmi_device *wdev, const void *context)
                goto error_put_devs;
        }
 
+       data->set_kbd_backlight = yogabook_wmi_set_kbd_backlight;
+
        r = yogabook_probe(dev, data, "ybwmi::kbd_backlight");
        if (r)
                goto error_put_devs;
@@ -352,7 +355,7 @@ static int yogabook_resume(struct device *dev)
        struct yogabook_wmi *data = dev_get_drvdata(dev);
 
        if (test_bit(YB_KBD_IS_ON, &data->flags))
-               yogabook_wmi_set_kbd_backlight(data, data->brightness);
+               data->set_kbd_backlight(data, data->brightness);
 
        clear_bit(YB_SUSPENDED, &data->flags);