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
38void sun8i_ui_scaler_enable(struct sun8i_mixer *mixer, int layer, bool enable);
39void 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

source code of linux/drivers/gpu/drm/sun4i/sun8i_ui_scaler.h