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_COMPOSITOR_H_
10 #define _STI_COMPOSITOR_H_
11 
12 #include <linux/clk.h>
13 #include <linux/kernel.h>
14 
15 #include "sti_mixer.h"
16 #include "sti_plane.h"
17 
18 #define WAIT_NEXT_VSYNC_MS      50 /*ms*/
19 
20 #define STI_MAX_MIXER 2
21 #define STI_MAX_VID   1
22 
23 enum sti_compositor_subdev_type {
24 	STI_MIXER_MAIN_SUBDEV,
25 	STI_MIXER_AUX_SUBDEV,
26 	STI_GPD_SUBDEV,
27 	STI_VID_SUBDEV,
28 	STI_CURSOR_SUBDEV,
29 };
30 
31 struct sti_compositor_subdev_descriptor {
32 	enum sti_compositor_subdev_type type;
33 	int id;
34 	unsigned int offset;
35 };
36 
37 /**
38  * STI Compositor data structure
39  *
40  * @nb_subdev: number of subdevices supported by the compositor
41  * @subdev_desc: subdev list description
42  */
43 #define MAX_SUBDEV 9
44 struct sti_compositor_data {
45 	unsigned int nb_subdev;
46 	struct sti_compositor_subdev_descriptor subdev_desc[MAX_SUBDEV];
47 };
48 
49 /**
50  * STI Compositor structure
51  *
52  * @dev: driver device
53  * @regs: registers (main)
54  * @data: device data
55  * @clk_compo_main: clock for main compo
56  * @clk_compo_aux: clock for aux compo
57  * @clk_pix_main: pixel clock for main path
58  * @clk_pix_aux: pixel clock for aux path
59  * @rst_main: reset control of the main path
60  * @rst_aux: reset control of the aux path
61  * @mixer: array of mixers
62  * @vid: array of vids
63  * @vtg: array of vtgs
64  * @vtg_vblank_nb: array of callbacks for VTG VSYNC notification
65  */
66 struct sti_compositor {
67 	struct device *dev;
68 	void __iomem *regs;
69 	struct sti_compositor_data data;
70 	struct clk *clk_compo_main;
71 	struct clk *clk_compo_aux;
72 	struct clk *clk_pix_main;
73 	struct clk *clk_pix_aux;
74 	struct reset_control *rst_main;
75 	struct reset_control *rst_aux;
76 	struct sti_mixer *mixer[STI_MAX_MIXER];
77 	struct sti_vid *vid[STI_MAX_VID];
78 	struct sti_vtg *vtg[STI_MAX_MIXER];
79 	struct notifier_block vtg_vblank_nb[STI_MAX_MIXER];
80 };
81 
82 int sti_compositor_debugfs_init(struct sti_compositor *compo,
83 				struct drm_minor *minor);
84 
85 #endif
86