1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) STMicroelectronics SA 2014
4  * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
5  *          Fabien Dessenne <fabien.dessenne@st.com>
6  *          for STMicroelectronics.
7  */
8 
9 #ifndef _STI_MIXER_H_
10 #define _STI_MIXER_H_
11 
12 #include <drm/drm_crtc.h>
13 
14 #include <drm/drm_debugfs.h>
15 #include <drm/drm_file.h>
16 
17 #include "sti_plane.h"
18 
19 struct device;
20 
21 #define to_sti_mixer(x) container_of(x, struct sti_mixer, drm_crtc)
22 
23 enum sti_mixer_status {
24 	STI_MIXER_READY,
25 	STI_MIXER_DISABLING,
26 	STI_MIXER_DISABLED,
27 };
28 
29 /**
30  * STI Mixer subdevice structure
31  *
32  * @dev: driver device
33  * @regs: mixer registers
34  * @id: id of the mixer
35  * @drm_crtc: crtc object link to the mixer
36  * @status: to know the status of the mixer
37  */
38 struct sti_mixer {
39 	struct device *dev;
40 	void __iomem *regs;
41 	int id;
42 	struct drm_crtc drm_crtc;
43 	enum sti_mixer_status status;
44 };
45 
46 const char *sti_mixer_to_str(struct sti_mixer *mixer);
47 
48 struct sti_mixer *sti_mixer_create(struct device *dev,
49 				   struct drm_device *drm_dev,
50 				   int id,
51 				   void __iomem *baseaddr);
52 
53 int sti_mixer_set_plane_status(struct sti_mixer *mixer,
54 			       struct sti_plane *plane, bool status);
55 int sti_mixer_set_plane_depth(struct sti_mixer *mixer, struct sti_plane *plane);
56 int sti_mixer_active_video_area(struct sti_mixer *mixer,
57 				struct drm_display_mode *mode);
58 
59 void sti_mixer_set_background_status(struct sti_mixer *mixer, bool enable);
60 
61 void sti_mixer_debugfs_init(struct sti_mixer *mixer, struct drm_minor *minor);
62 
63 /* depth in Cross-bar control = z order */
64 #define GAM_MIXER_NB_DEPTH_LEVEL 6
65 
66 #define STI_MIXER_MAIN 0
67 #define STI_MIXER_AUX  1
68 
69 #endif
70