text: /* SPDX-License-Identifier: GPL-2.0 */
  /*
   * Copyright (C) STMicroelectronics SA 2014
   * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
   *          Fabien Dessenne <fabien.dessenne@st.com>
   *          for STMicroelectronics.
   */
  
  #ifndef _STI_MIXER_H_
  #define _STI_MIXER_H_
  
  #include <drm/drm_crtc.h>
  
  #include <drm/drm_debugfs.h>
  #include <drm/drm_file.h>
  
  #include "sti_plane.h"
  
  struct device;
  
  #define to_sti_mixer(x) container_of(x, struct sti_mixer, drm_crtc)
  
  enum sti_mixer_status {
  	STI_MIXER_READY,
  	STI_MIXER_DISABLING,
  	STI_MIXER_DISABLED,
  };
  
  /**
   * STI Mixer subdevice structure
   *
   * @dev: driver device
   * @regs: mixer registers
   * @id: id of the mixer
   * @drm_crtc: crtc object link to the mixer
   * @status: to know the status of the mixer
   */
  struct sti_mixer {
  	struct device *dev;
  	void __iomem *regs;
  	int id;
  	struct drm_crtc drm_crtc;
  	enum sti_mixer_status status;
  };
  
  const char *sti_mixer_to_str(struct sti_mixer *mixer);
  
  struct sti_mixer *sti_mixer_create(struct device *dev,
  				   struct drm_device *drm_dev,
  				   int id,
  				   void __iomem *baseaddr);
  
  int sti_mixer_set_plane_status(struct sti_mixer *mixer,
  			       struct sti_plane *plane, bool status);
  int sti_mixer_set_plane_depth(struct sti_mixer *mixer, struct sti_plane *plane);
  int sti_mixer_active_video_area(struct sti_mixer *mixer,
  				struct drm_display_mode *mode);
  
  void sti_mixer_set_background_status(struct sti_mixer *mixer, bool enable);
  
  void sti_mixer_debugfs_init(struct sti_mixer *mixer, struct drm_minor *minor);
  
  /* depth in Cross-bar control = z order */
  #define GAM_MIXER_NB_DEPTH_LEVEL 6
  
  #define STI_MIXER_MAIN 0
  #define STI_MIXER_AUX  1
  
  #endif
  