xref: /linux/drivers/gpu/drm/sun4i/sun8i_ui_scaler.h (revision 597473720f4dc69749542bfcfed4a927a43d935e)
1 /*
2  * Copyright (C) 2017 Jernej Skrabec <jernej.skrabec@siol.net>
3  *
4  * This file is licensed under the terms of the GNU General Public
5  * License version 2.  This program is licensed "as is" without any
6  * warranty of any kind, whether express or implied.
7  */
8 
9 #ifndef _SUN8I_UI_SCALER_H_
10 #define _SUN8I_UI_SCALER_H_
11 
12 #include "sun8i_mixer.h"
13 
14 #define DE2_UI_SCALER_UNIT_SIZE 0x10000
15 #define DE3_UI_SCALER_UNIT_SIZE 0x08000
16 
17 /* this two macros assumes 16 fractional bits which is standard in DRM */
18 #define SUN8I_UI_SCALER_SCALE_MIN		1
19 #define SUN8I_UI_SCALER_SCALE_MAX		((1UL << 20) - 1)
20 
21 #define SUN8I_UI_SCALER_SCALE_FRAC		20
22 #define SUN8I_UI_SCALER_PHASE_FRAC		20
23 #define SUN8I_UI_SCALER_COEFF_COUNT		16
24 #define SUN8I_UI_SCALER_SIZE(w, h)		(((h) - 1) << 16 | ((w) - 1))
25 
26 #define SUN8I_SCALER_GSU_CTRL(base)		((base) + 0x0)
27 #define SUN8I_SCALER_GSU_OUTSIZE(base)		((base) + 0x40)
28 #define SUN8I_SCALER_GSU_INSIZE(base)		((base) + 0x80)
29 #define SUN8I_SCALER_GSU_HSTEP(base)		((base) + 0x88)
30 #define SUN8I_SCALER_GSU_VSTEP(base)		((base) + 0x8c)
31 #define SUN8I_SCALER_GSU_HPHASE(base)		((base) + 0x90)
32 #define SUN8I_SCALER_GSU_VPHASE(base)		((base) + 0x98)
33 #define SUN8I_SCALER_GSU_HCOEFF(base, index)	((base) + 0x200 + 0x4 * (index))
34 
35 #define SUN8I_SCALER_GSU_CTRL_EN		BIT(0)
36 #define SUN8I_SCALER_GSU_CTRL_COEFF_RDY		BIT(4)
37 
38 void sun8i_ui_scaler_enable(struct sun8i_mixer *mixer, int layer, bool enable);
39 void sun8i_ui_scaler_setup(struct sun8i_mixer *mixer, int layer,
40 			   u32 src_w, u32 src_h, u32 dst_w, u32 dst_h,
41 			   u32 hscale, u32 vscale, u32 hphase, u32 vphase);
42 
43 #endif
44