LinuxKPI: Implement backlight_enable and backlight_disable functions
For now, disable backlight if brightness level is set to 0. In the future we may implement separate knob in backlight(8). Required by drm-kmod v5.6 Reviewed by: hselasky, manu MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D32165
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@ -79,10 +79,10 @@ void linux_backlight_device_unregister(struct backlight_device *bd);
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linux_backlight_device_register(name, dev, data, ops, props)
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#define backlight_device_unregister(bd) linux_backlight_device_unregister(bd)
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static inline void
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static inline int
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backlight_update_status(struct backlight_device *bd)
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{
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bd->ops->update_status(bd);
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return (bd->ops->update_status(bd));
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}
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static inline void
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@ -91,4 +91,22 @@ backlight_force_update(struct backlight_device *bd, int reason)
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bd->props.brightness = bd->ops->get_brightness(bd);
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}
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static inline int
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backlight_enable(struct backlight_device *bd)
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{
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if (bd == NULL)
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return (0);
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bd->props.power = 0/* FB_BLANK_UNBLANK */;
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return (backlight_update_status(bd));
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}
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static inline int
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backlight_disable(struct backlight_device *bd)
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{
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if (bd == NULL)
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return (0);
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bd->props.power = 4/* FB_BLANK_POWERDOWN */;
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return (backlight_update_status(bd));
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}
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#endif /* _LINUX_BACKLIGHT_H_ */
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@ -1215,6 +1215,8 @@ linux_backlight_update_status(device_t dev, struct backlight_props *props)
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pdev->dev.bd->props.brightness = pdev->dev.bd->props.max_brightness *
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props->brightness / 100;
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pdev->dev.bd->props.power = props->brightness == 0 ?
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4/* FB_BLANK_POWERDOWN */ : 0/* FB_BLANK_UNBLANK */;
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return (pdev->dev.bd->ops->update_status(pdev->dev.bd));
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}
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