1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Copyright (C) 2016 Marek Vasut <marex@denx.de>
4  *
5  * i.MX23/i.MX28/i.MX6SX MXSFB LCD controller driver.
6  */
7 
8 #ifndef __MXSFB_DRV_H__
9 #define __MXSFB_DRV_H__
10 
11 #include <drm/drm_crtc.h>
12 #include <drm/drm_device.h>
13 #include <drm/drm_encoder.h>
14 #include <drm/drm_plane.h>
15 
16 struct clk;
17 
18 struct mxsfb_devdata {
19 	unsigned int	transfer_count;
20 	unsigned int	cur_buf;
21 	unsigned int	next_buf;
22 	unsigned int	hs_wdth_mask;
23 	unsigned int	hs_wdth_shift;
24 	bool		has_overlay;
25 	bool		has_ctrl2;
26 };
27 
28 struct mxsfb_drm_private {
29 	const struct mxsfb_devdata	*devdata;
30 
31 	void __iomem			*base;	/* registers */
32 	struct clk			*clk;
33 	struct clk			*clk_axi;
34 	struct clk			*clk_disp_axi;
35 
36 	unsigned int			irq;
37 
38 	struct drm_device		*drm;
39 	struct {
40 		struct drm_plane	primary;
41 		struct drm_plane	overlay;
42 	} planes;
43 	struct drm_crtc			crtc;
44 	struct drm_encoder		encoder;
45 	struct drm_connector		*connector;
46 	struct drm_bridge		*bridge;
47 };
48 
49 static inline struct mxsfb_drm_private *
to_mxsfb_drm_private(struct drm_device * drm)50 to_mxsfb_drm_private(struct drm_device *drm)
51 {
52 	return drm->dev_private;
53 }
54 
55 void mxsfb_enable_axi_clk(struct mxsfb_drm_private *mxsfb);
56 void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb);
57 
58 int mxsfb_kms_init(struct mxsfb_drm_private *mxsfb);
59 
60 #endif /* __MXSFB_DRV_H__ */
61