drivers/gpu/drm/i915/display/intel_backlight.h

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2021 Intel Corporation
   4  */
   5
   6 #ifndef __INTEL_BACKLIGHT_H__
   7 #define __INTEL_BACKLIGHT_H__
   8
   9 #include <linux/types.h>
  10
  11 struct drm_connector_state;
  12 struct intel_atomic_state;
  13 struct intel_connector;
  14 struct intel_crtc_state;
  15 struct intel_encoder;
  16 struct intel_panel;
  17 enum pipe;
  18
  19 void intel_backlight_init_funcs(struct intel_panel *panel);
  20 int intel_backlight_setup(struct intel_connector *connector, enum pipe pipe);
  21 void intel_backlight_destroy(struct intel_panel *panel);
  22
  23 void intel_backlight_enable(const struct intel_crtc_state *crtc_state,
  24                             const struct drm_connector_state *conn_state);
  25 void 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);
  29 void intel_backlight_disable(const struct drm_connector_state *old_conn_state);
  30
  31 void intel_backlight_set_acpi(const struct drm_connector_state *conn_state,
  32                               u32 level, u32 max);
  33 void intel_backlight_set_pwm_level(const struct drm_connector_state *conn_state,
  34                                    u32 level);
  35 u32 intel_backlight_invert_pwm_level(struct intel_connector *connector, u32 level);
  36 u32 intel_backlight_level_to_pwm(struct intel_connector *connector, u32 level);
  37 u32 intel_backlight_level_from_pwm(struct intel_connector *connector, u32 val);
  38
  39 #if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
  40 int intel_backlight_device_register(struct intel_connector *connector);
  41 void intel_backlight_device_unregister(struct intel_connector *connector);
  42 #else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
  43 static inline int intel_backlight_device_register(struct intel_connector *connector)
  44 {
  45         return 0;
  46 }
  47 static inline void intel_backlight_device_unregister(struct intel_connector *connector)
  48 {
  49 }
  50 #endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
  51
  52 #endif /* __INTEL_BACKLIGHT_H__ */