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1/* SPDX-License-Identifier: MIT */2/*3 * Copyright © 2021 Intel Corporation4 */5 6#ifndef __INTEL_BACKLIGHT_H__7#define __INTEL_BACKLIGHT_H__8 9#include <linux/types.h>10 11struct drm_connector_state;12struct intel_atomic_state;13struct intel_connector;14struct intel_crtc_state;15struct intel_encoder;16struct intel_panel;17enum pipe;18 19void intel_backlight_init_funcs(struct intel_panel *panel);20int intel_backlight_setup(struct intel_connector *connector, enum pipe pipe);21void intel_backlight_destroy(struct intel_panel *panel);22 23void intel_backlight_enable(const struct intel_crtc_state *crtc_state,24 const struct drm_connector_state *conn_state);25void intel_backlight_update(struct intel_atomic_state *state,26 struct intel_encoder *encoder,27 const struct intel_crtc_state *crtc_state,28 const struct drm_connector_state *conn_state);29void intel_backlight_disable(const struct drm_connector_state *old_conn_state);30 31void intel_backlight_set_acpi(const struct drm_connector_state *conn_state,32 u32 level, u32 max);33void intel_backlight_set_pwm_level(const struct drm_connector_state *conn_state,34 u32 level);35u32 intel_backlight_invert_pwm_level(struct intel_connector *connector, u32 level);36u32 intel_backlight_level_to_pwm(struct intel_connector *connector, u32 level);37u32 intel_backlight_level_from_pwm(struct intel_connector *connector, u32 val);38 39#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)40int intel_backlight_device_register(struct intel_connector *connector);41void intel_backlight_device_unregister(struct intel_connector *connector);42#else /* CONFIG_BACKLIGHT_CLASS_DEVICE */43static inline int intel_backlight_device_register(struct intel_connector *connector)44{45 return 0;46}47static inline void intel_backlight_device_unregister(struct intel_connector *connector)48{49}50#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */51 52#endif /* __INTEL_BACKLIGHT_H__ */53